The mission of Speechify is to make sure that reading is never a barrier to learning.

Over 50 million people use Speechify’s text-to-speech products to turn whatever they’re reading – PDFs, books, Google Docs, news articles, websites – into audio, so they can read faster, read more, and remember more. Speechify’s text-to-speech reading products include its iOS app, Android App, Mac App, Chrome Extension, and Web App. Google recently named Speechify the Chrome Extension of the Year and Apple named Speechify its App of the Day.

Today, nearly 200 people around the globe work on Speechify in a 100% distributed setting – Speechify has no office. These include frontend and backend engineers, AI research scientists, and others from Amazon, Microsoft, and Google, leading PhD programs like Stanford, high growth startups like Stripe, Vercel, Bolt, and many founders of their own companies.

Overview

With the growth of our iOS app, being the #18 productivity app in the App Store category and also our recent recognition as Apple's 2025 Design Award for inclusivity, we find the need for a Senior iOS Engineer to help us support the new user base as well as work on new and exciting projects to push our missing forward.   

This is a key role and ideal for someone who thinks strategically, enjoys fast-paced environments, passionate about making product decisions, and has experience building great user experiences that delight users.

We are a flat organization that allows anyone to become a leader by showing excellent technical skills and delivering results consistently and fast. Work ethic, solid communication skills, and obsession with winning are paramount. 

Our interview process involves several technical interviews and we aim to complete them within 1 week. 

What You’ll Do

• Opportunity to lead key engineering and product decisions
• Actively shipping production code for the Speechify iOS app
• Work within a dedicated product team
• Participate in product discussions to shape the product roadmap
• Maintain and enhance the existing complex app architecture

An Ideal Candidate Should Have

• Experience. You've worked on products that scaled to a large user base
• Track record. You have worked on various products from inception to decent traction. You have been responsible for engineering the product
• Customer obsession. We expect every team member whose responsibilities directly impact customers to be constantly obsessed about providing the best possible experience
• Product thinking. You make thoughtful decisions about the evolution of your product and support internal teams and designers into taking the right direction
• Speed. You work quickly to generate ideas and know how to decide which things can ship now and what things need time
• Focus. We’re a high-growth startup with a busy, remote team. You know how and when to engage or be heads down
• Technical skills. Swift, SwiftUI

Technical Requirements:

• Swift Programming Language
• SwiftUI experience
• Experience in Multithreading Programming
• Working with CI/CD infrastructure
• Experience with Fastlane
• SOLID principles, the ability to write every single class according to SOLID
• Experience with Git and understanding of different Git strategies

What We offer:

• A fast-growing environment where you can help shape the company and product
• An entrepreneurial crew that supports risk, intuition, and hustle
• The opportunity to make a big impact in a transformative industry
• A competitive salary, a collegiate atmosphere, and a commitment to building a great asynchronous culture
• Work on a product that millions of people use and where daily feedback includes users sharing that they cried when they first found the product because it was so impactful on their lives
• Support people with learning differences like Dyslexia, ADD, Low Vision, Concussions, Autism, and Second Language Learners, and give reading superpowers to professionals all over the world
• Work in one of the fastest growing sectors of tech: Intersection of Artificial Intelligence and Audio

Think you’re a good fit for this job? 

Tell us more about yourself and why you're interested in the role when you apply.
And don’t forget to include links to your portfolio and LinkedIn.

Not looking but know someone who would make a great fit? 

Refer them! 

Speechify is committed to a diverse and inclusive workplace.

Speechify does not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status.

• Strong experience building mobile applications (iOS or Android) in production environments
• Experience with backend services and APIs
• Familiarity with AI-assisted development tools (Claude, ChatGPT, Gemini, etc.)
• Solid understanding of mobile platform internals (permissions, messaging systems, sandboxing, etc.)
• Experience designing scalable architectures and making system-level decisions
• Comfortable working with cloud infrastructure and distributed systems
• Ability to operate with high autonomy and navigate ambiguous requirements
• Strong communication skills and experience working with senior stakeholders

• Experience working on early-stage initiatives
• Experience with consumer-facing products
• Exposure to security-related domains (authentication, fraud detection, phishing, etc.)
• Experience working in fast-paced innovation or experimentation teams

Behind the user-friendly iOS and Android apps and webpage that work across the world is the engineering team.  We are in charge of creating, developing, improving, and maintaining all Fever services so that more people can have an amazing experience.

About the role

What are we looking for:

We are looking for a Senior Backend Engineer to join the backend team with outstanding software development talent proven by great work results/experience. Somebody that cares about code quality and not just get things done, but get things done right.

If you're smart, have great energy, can't think about a system without a CI/CD pipeline and you want to thrive in a fast paced environment, we are in sync.

What would you do at Fever?

About you

Must have skills:

• Strong knowledge on good practices, testing and design patterns
• You are proficient in business English
• You know how to deliver code from development to production
• Experience with RESTful APIs (implementation and consumption)
• Knowledge of relational databases and SQL

We use these technologies, so it would be a plus if you have experience in:

• Django/Flask
• PostgreSQL
• Redis
• Experience with event streaming platforms such as Kafka or RabbitMQ
• Experience working on agile methodology 
• Event communication between services
• Handling services with more than 1000 request/second.
• AWS, Docker and Kubernetes

Benefits & Perks

• "Relación de dependencia" contract.
• Osde 410 as medical insurance
• 40% discount on all Fever events and experiences
• Home office friendly anywhere in Argentina
• English Lessons
• WellHub Membership
• Opportunity to have a real impact in a high-growth global category leader
• Responsibility from day one and professional and personal growth
• Great work environment with a young, international team of talented people to work with!
• Attractive compensation package consisting of base salary and the potential to earn a significant bonus for top performance (including Base, Variable, and Stock Options).

Required:

• 3+ in Windows desktop application development using Windows App SDK, WinUI (or similar), C#, XAML — and ideally additional experience with native Windows code (C++, Win32/WinRT/COM).
• Deep understanding of Windows application architecture, including interop between managed code (.NET) and native code.
• Proven track record of designing, building, and shipping production-quality desktop applications, with an emphasis on reliability, performance, scalability, and maintainability.
• Strong experience with accessibility APIs on Windows (e.g. Microsoft UI Automation or similar), and a dedication to building accessible and inclusive software.
• Excellent software engineering fundamentals: OOP, design patterns, data structures, algorithms, memory management, multi-threading or asynchronous programming (where relevant).
• Experience leading technical design, mentoring other engineers, conducting code reviews, and making architecture-level decisions.
• Strong communication skills; ability to articulate tradeoffs, collaborate with cross-functional teams, and drive consensus.
• A user-centric mindset: focus on building polished, intuitive, and accessible experiences for end users.

Preferred / Bonus:

• Experience with writing automated tests for UI — unit tests, integration tests, UI automation tests; familiarity with relevant testing frameworks.
• Experience with performance optimization for desktop apps (memory usage, startup time, rendering performance, high-DPI support, responsiveness under load).
• Experience with localization/globalization, right-to-left UI support, internationalization, accessibility for multiple regions.
• Familiarity with telemetry, analytics, crash reporting, logging, and error monitoring in desktop applications.
• Previous experience in shaping CI/CD workflows, release pipelines, and deployment strategies for desktop applications.
• Demonstrated ability to take ownership of feature areas or modules and drive them long-term, including maintenance, refactoring, and technical debt management.

What we offer

• A high-impact role: you will define architecture, shape the future of our Windows product, and directly influence what millions of users see and experience.
• A collaborative, flat-structure engineering culture — you are not just a coder, but a builder and a decision-maker.
• Opportunities to lead — mentor others, steer technical direction, and grow into broader technical leadership (e.g. Tech Lead, Architect).
• Flexibility, autonomy, and responsibility: you define how to solve problems, own features end-to-end, and contribute to long-term product vision.
• A purpose-driven mission: building software that’s reliable, accessible, and user-centered — making a real difference for people.                  

Think you’re a good fit for this job? 

Tell us more about yourself and why you're interested in the role when you apply.
And don’t forget to include links to your portfolio and LinkedIn.

Not looking but know someone who would make a great fit? 
Refer them! 

Speechify is committed to a diverse and inclusive workplace. 
Speechify does not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status.

The mission of Speechify is to make sure that reading is never a barrier to learning.

Over 50 million people use Speechify’s text-to-speech products to turn whatever they’re reading – PDFs, books, Google Docs, news articles, websites – into audio, so they can read faster, read more, and remember more. Speechify’s text-to-speech reading products include its iOS app, Android App, Mac App, Chrome Extension, and Web App. Google recently named Speechify the Chrome Extension of the Year and Apple named Speechify its App of the Day.

Today, nearly 200 people around the globe work on Speechify in a 100% distributed setting – Speechify has no office. These include frontend and backend engineers, AI research scientists, and others from Amazon, Microsoft, and Google, leading PhD programs like Stanford, high growth startups like Stripe, Vercel, Bolt, and many founders of their own companies.

This is a key role and ideal for someone who thinks strategically, enjoys fast-paced environments, passionate about making product decisions, and has experience building great user experiences that delight users.

We are a flat organization that allows anyone to become a leader by showing excellent technical skills and delivering results consistently and fast. Work ethic, solid communication skills, and obsession with winning are paramount. 

Our interview process involves several technical interviews and we aim to complete them within 1 week. 

What You’ll Do

• Actively ship production code to the web products
• Work closely with your dedicated product team
• Participate in product discussions to shape the product roadmap
• Have the opportunity to work on new and exciting features that will impact millions of lives

An Ideal Candidate Should Have

• Experience. You've built and ship products that have scaled to thousands or millions of users
• Customer obsession. You are passionate about the field and have the desire to build high quality product that serves customer needs
• Speed. You work quickly to generate ideas and know how to decide which things can ship now and what things need time
• Focus. We’re a high-growth startup with a busy, remote team. You know how and when to engage or be heads down
• Collaboration. You know how to inspire, play, and negotiate with opinionated designers, marketers, and PMs
• Tech Stack: Vanilla JS, ReactJS, Redux, Firebase, Typescript

What We Offer

• A fast-growing environment where you can help shape the culture
• An entrepreneurial crew that supports risk, intuition, and hustle
• A hands-off approach so you can focus and do your best work
• The opportunity to make an impact in a transformative industry
• A competitive salary, a collegiate atmosphere, and a commitment to building a great asynchronous culture

Think you’re a good fit for this job? 

Tell us more about yourself and why you're interested in the role when you apply.
And don’t forget to include links to your portfolio and LinkedIn.

Not looking but know someone who would make a great fit? 

Refer them! 

Speechify is committed to a diverse and inclusive workplace. 

Speechify does not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status.

The mission of Speechify is to make sure that reading is never a barrier to learning.

Over 50 million people use Speechify’s text-to-speech products to turn whatever they’re reading – PDFs, books, Google Docs, news articles, websites – into audio, so they can read faster, read more, and remember more. Speechify’s text-to-speech reading products include its iOS app, Android App, Mac App, Chrome Extension, and Web App. Google recently named Speechify the Chrome Extension of the Year and Apple named Speechify its 2025 Design Award winner for Inclusivity.  

Today, nearly 200 people around the globe work on Speechify in a 100% distributed setting – Speechify has no office. These include frontend and backend engineers, AI research scientists, and others from Amazon, Microsoft, and Google, leading PhD programs like Stanford, high growth startups like Stripe, Vercel, Bolt, and many founders of their own companies.

Overview

The responsibilities of our Platform team include building and maintaining all backend services, including, but not limited to, payments, analytics, subscriptions, new products, text to speech, and external APIs.

This is a key role and ideal for someone who thinks strategically, enjoys fast-paced environments, is passionate about making product decisions, and has experience building great user experiences that delight users.

We are a flat organization that allows anyone to become a leader by showing excellent technical skills and delivering results consistently and fast. Work ethic, solid communication skills, and obsession with winning are paramount. 

Our interview process involves several technical interviews and we aim to complete them within 1 week. 

What You’ll Do

• Design, develop, and maintain robust APIs including public TTS API, internal APIs like Payment, Subscription, Auth and Consumption Tracking, ensuring they meet business and scalability requirements
• Oversee the full backend API landscape, enhancing and optimizing for performance and maintainability
• Collaborate on B2B solutions, focusing on customization and integration needs for enterprise clients
• Work closely with cross-functional teams to align backend architecture with overall product strategy and user experience

An Ideal Candidate Should Have

• Proven experience in backend development: TS/Node (required)
• Direct experience with GCP and knowledge of AWS, Azure, or other cloud providers
• Efficiency in ideation and implementation, prioritizing tasks based on urgency and impact
• Preferred: Experience with Docker and containerized deployments
• Preferred: Proficiency in deploying high availability applications on Kubernetes

What We Offer

• A dynamic environment where your contributions shape the company and its products
• A team that values innovation, intuition, and drive
• Autonomy, fostering focus and creativity
• The opportunity to have a significant impact in a revolutionary industry
• Competitive compensation, a welcoming atmosphere, and a commitment to an exceptional asynchronous work culture
• The privilege of working on a product that changes lives, particularly for those with learning differences like dyslexia, ADD, and more
• An active role at the intersection of artificial intelligence and audio – a rapidly evolving tech domain

Think you’re a good fit for this job? 

Tell us more about yourself and why you're interested in the role when you apply.
And don’t forget to include links to your portfolio and LinkedIn.

Not looking but know someone who would make a great fit? 

Refer them! 

Speechify is committed to a diverse and inclusive workplace. 

Speechify does not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status.

About Sezzle:

With a mission to financially empower the next generation, Sezzle is revolutionizing the shopping experience beyond payments, blending cutting-edge tech with seamless, interest-free installment plans that make shopping smarter and more accessible. We’re not just transforming payments; we’re redefining how people discover, interact with, and purchase the things they love while driving real impact on merchant sales through increased conversions and higher order values. As we continue to shape the future of fintech and retail, we’re building an innovative, dynamic team passionate about creating more than just a transaction but a truly unique shopping journey. If you’re excited about pushing boundaries in tech and delivering a game-changing experience for consumers and merchants alike, come join us at Sezzle and help create the future of shopping!

About the Role: 

We are seeking a talented and motivated Senior Mobile Engineer who is best in class with a high IQ plus a high EQ. This role presents an exciting opportunity to thrive in a dynamic, fast-paced environment within a rapidly growing team, with abundant prospects for career advancement.

Compensation

The compensation range for the role is as follows:

• 4,600 - 7,500 USD Monthly

Interview Process

We believe transparency is important at Sezzle. Regularly providing feedback while setting expectations is part of our culture starting with the interview process. Advancement through each step is not guaranteed.

• Application submitted (you are here)
• Wonderlic test (30-40 min)
• Interview with recruiters (30 min)
• Coding assessment (~1.5 hours)
• Interview with engineers (1 hour)
• Interview with engineering leadership (30-45 min)
• Offer!

What You'll Do: 

• Help own and build out new features within our cross-platform TypeScript React Native app, and Golang backend APIs.
• Manage our releases, using tools like cohorting, feature flags, and app-store infrastructure to ensure a safe rollout to our millions of active users.
• Maintain a strong working relationship with product, design, and the business to ensure stakeholder needs are being evaluated and met.
• Work with the team to continuously build clean, scalable, robust, and testable code.
• Develop a deep working knowledge of your application, data domain, and KPIs.

What We Look For: 

• 6+ years experience solving technical problems as part of a team.
• Experience developing and delivering a mobile application to Apple and Google’s mobile app stores.
• Strong familiarity with modern Frontend Development, Javascript or Typescript, and building applications with React Native, or similar cross-platform framework.
• Understanding of relational databases like MySQL.
• Bachelor's degree in computer science

Preferred Knowledge and Skills:

• Knowledgeable in writing automated tests for applications (unit, integration, end-to-end), and implementing them in a CI environment.
• Ability to solve problems with backend-focused languages like Go, Python, Java or similar.
• Familiarity with typical microservice architecture composed of HTTP APIs.
• Experience working with native code on iOS, Android.

About You: 

• • You have relentlessly high standards - many people may think your standards are unreasonably high. You are continually raising the bar and driving those around you to deliver great results. You make sure that defects do not get sent down the line and that problems are fixed so they stay fixed.
  • You’re not bound by convention - your success—and much of the fun—lies in developing new ways to do things
  • You need action - speed matters in business. Many decisions and actions are reversible and do not need extensive study. We value calculated risk-taking.
  • You earn trust - you listen attentively, speak candidly, and treat others respectfully.
  • You have backbone; disagree, then commit - you can respectfully challenge decisions when you disagree, even when doing so is uncomfortable or exhausting. You have conviction and are tenacious. You do not compromise for the sake of social cohesion. Once a decision is determined, you commit wholly.

Sezzle’s Technology Stack:

• Languages: Golang, Typescript, Python
• Frontend: Typescript - React and React Native
• Backend: Golang
• Database: MySQL, Postgres, Elasticsearch
• DevOps & Cloud: AWS, Kubernetes
• Version Control: Git
• CI/CD: Gitlab
• Testing: Developer-driven, focus on automated unit, integration, and end-to-end tests
• Sezzle is focused on using open source, and we build what we can before buying!

What Makes Working at Sezzle Awesome? 

At Sezzle, we are more than just brilliant engineers, passionate data enthusiasts, out-of-the-box thinkers, and determined innovators; we are skilled musicians, yogis, cyclists, chefs, golfers, dog-lovers, and rock-climbers. We believe in surrounding ourselves with not only the best and the brightest individuals, but those that are unique and purpose-driven in all that they do. Our culture is not defined by a certain set of perks designed to give the illusion of the traditional startup culture, but rather, it is the visible example living in every employee that we hire. 

#Li-remote #Full-time

The salary range for this role is 3,500 - $6,000 per month (Gross in USD)

About Sezzle:

With a mission to financially empower the next generation, Sezzle is revolutionizing the shopping experience beyond payments, blending cutting-edge tech with seamless, interest-free installment plans that make shopping smarter and more accessible. We’re not just transforming payments; we’re redefining how people discover, interact with, and purchase the things they love while driving real impact on merchant sales through increased conversions and higher order values. As we continue to shape the future of fintech and retail, we’re building an innovative, dynamic team passionate about creating more than just a transaction but a truly unique shopping journey. If you’re excited about pushing boundaries in tech and delivering a game-changing experience for consumers and merchants alike, come join us at Sezzle and help create the future of shopping!

About the Role: 

We are seeking a talented and motivated Mobile Engineer who is best in class with a high IQ plus a high EQ. This role presents an exciting opportunity to thrive in a dynamic, fast-paced environment within a rapidly growing team, with abundant prospects for career advancement.

Compensation

The compensation range for the role is as follows:

• 3,500 - $6,000 per month (Gross in USD)

Interview Process

We believe transparency is important at Sezzle. Regularly providing feedback while setting expectations is part of our culture starting with the interview process. Advancement through each step is not guaranteed.

• Application submitted (you are here)
• Wonderlic test (30-40 min)
• Coding assessment (~1.5 hours)
• Interview with recruiters (30 min)
• Interview with engineers (1 hour)
• Interview with engineering leadership (30-45 min)
• Offer!

What You'll Do:

• Help own and build out new features within our cross-platform TypeScript React Native app, and Golang backend APIs.
• Manage our releases, using tools like cohorting, feature flags, and app-store infrastructure to ensure a safe rollout to our millions of active users.
• Maintain a strong working relationship with product, design, and the business to ensure stakeholder needs are being evaluated and met.
• Work with the team to continuously build clean, scalable, robust, and testable code.
• Develop a deep working knowledge of your application, data domain, and KPIs.

What We Look For:

• 3+ years of professional mobile development experience, with at least 2+ years in React Native or similar technology such as Flutter.
• Experience working with native code on iOS (Swift/ObjC) and Native Android (Kotlin/Java).
• Experience developing and delivering a mobile application to Apple and Google’s mobile app stores.
• Deep understanding of React Native architecture, hooks, context, navigation patterns, and performance optimization.
• Strong familiarity with unit testing, integration testing, and E2E testing (Jest, React Native Testing Library, Detox, Appium, etc.).
• Ability to lead features end-to-end — from requirements, design, implementation, deployment, monitoring, and improvement.
• Experience mentoring junior or mid-level engineers.
• Capable of performing high-quality code reviews with focus on maintainability, clarity, and best practices.
• Drives technical decisions, proposes improvements, and elevates code quality across the team.
• Works well with product managers, designers, backend teams, and QA.
• Bachelor's degree in computer science
• Knowledge of mobile CI/CD pipelines (Fastlane, Bitrise, GitHub Actions, etc.).

Preferred Knowledge and Skills:

• Knowledgeable in writing automated tests for applications (unit, integration, end-to-end), and implementing them in a CI environment.
• Ability to solve problems with backend-focused languages like Go, Python, Java or similar.
• Familiarity with typical microservice architecture composed of HTTP APIs.
• Experience working with native code on iOS, Android.

About You: 

• You have relentlessly high standards - many people may think your standards are unreasonably high. You are continually raising the bar and driving those around you to deliver great results. You make sure that defects do not get sent down the line and that problems are fixed so they stay fixed.
• You’re not bound by convention - your success—and much of the fun—lies in developing new ways to do things
• You need action - speed matters in business. Many decisions and actions are reversible and do not need extensive study. We value calculated risk-taking.
• You earn trust - you listen attentively, speak candidly, and treat others respectfully.
• You have backbone; disagree, then commit - you can respectfully challenge decisions when you disagree, even when doing so is uncomfortable or exhausting. You have conviction and are tenacious. You do not compromise for the sake of social cohesion. Once a decision is determined, you commit wholly.

Sezzle’s Technology Stack:

• Languages: Golang, Typescript, Python
• Frontend: Typescript - React and React Native
• Backend: Golang
• Database: MySQL, Postgres, Elasticsearch
• DevOps & Cloud: AWS, Kubernetes
• Version Control: Git
• CI/CD: Gitlab
• Testing: Developer-driven, focus on automated unit, integration, and end-to-end tests
• Sezzle is focused on using open source, and we build what we can before buying!

What Makes Working at Sezzle Awesome? 

At Sezzle, we are more than just brilliant engineers, passionate data enthusiasts, out-of-the-box thinkers, and determined innovators; we are skilled musicians, yogis, cyclists, chefs, golfers, dog-lovers, and rock-climbers. We believe in surrounding ourselves with not only the best and the brightest individuals, but those that are unique and purpose-driven in all that they do. Our culture is not defined by a certain set of perks designed to give the illusion of the traditional startup culture, but rather, it is the visible example living in every employee that we hire. 

#Li-remote #Full-time

The salary range for this role is $2,800 - $6,000 per month (Gross in USD) 

About Sezzle:

With a mission to financially empower the next generation, Sezzle is revolutionizing the shopping experience beyond payments, blending cutting-edge tech with seamless, interest-free installment plans that make shopping smarter and more accessible. We’re not just transforming payments; we’re redefining how people discover, interact with, and purchase the things they love while driving real impact on merchant sales through increased conversions and higher order values. As we continue to shape the future of fintech and retail, we’re building an innovative, dynamic team passionate about creating more than just a transaction but a truly unique shopping journey. If you’re excited about pushing boundaries in tech and delivering a game-changing experience for consumers and merchants alike, come join us at Sezzle and help create the future of shopping!

Compensation:

For this mid-level development role, with 3-7 years of experience, the compensation range is $2,800 - $6,000 USD per month. This range is designed to reflect the skills, experience, and value brought to the team, ensuring competitive and fair pay within the industry.

Interview Process

We believe transparency is important at Sezzle. Regularly providing feedback while setting expectations is part of our culture starting with the interview process. Advancement through each step is not guaranteed.

• Application submitted (you are here)
• Wonderlic test (30-40 min)
• Coding assessment (~1.5 hours)
• Interview with recruiters (30 min)
• Interview with engineers (1 hour)
• Interview with engineering leadership (30-45 min)
• Offer!

About the Role: 

We are seeking a talented and motivated Software Engineer II who is best in class with a high IQ plus a high EQ. This role presents an exciting opportunity to thrive in a dynamic, fast-paced environment within a rapidly growing team, with abundant prospects for career advancement. This role sits within our Marketing & Mobile Engineering organization. You will work across our marketing technology stack and mobile surfaces, building systems that power lifecycle messaging, attribution, content delivery, and in-app experiences for millions of users. The work directly influences Sezzle’s core growth metrics — subscriber acquisition, engagement, and retention. You will work closely with other engineers across multiple teams to provide high-quality, scalable, and innovative products. Your day-to-day responsibilities will include partnering with other engineers to design, develop, and deliver new features. As your skills grow so will the size and scope of the projects which you’ll be involved in. Sezzle has a strong culture for promotion with defined paths through Engineering that matches all levels. You’ll be working as part of a full-stack Engineering team which has varied disciplines.

What You'll Do: 

• Build and maintain features across our marketing technology platform and mobile applications, actively learning new areas of the product
• Develop and extend integrations with marketing and analytics platforms (e.g., lifecycle automation tools, attribution systems, content management platforms) 
• Contribute to backend services, APIs, and data pipelines that power campaign targeting, user segmentation, and messaging delivery 
• Collaborate with Marketing, Product, and Analytics stakeholders to translate business requirements into engineering solutions
• Be an active participant in design and architecture discussions, sharing your ideas while building the next generation of features for the Sezzle platform
• Hands-on with our codebase and a contributor to code reviews
• Mentor other engineers who are starting along their career path 
• Work with the team to continuously build and deploy scalable solutions
• Assist in planning, estimations, and completion for projects brought up by team stakeholders 
• Leverage AI-assisted development tools to accelerate delivery and improve code quality

What We Look For: 

• Experience solving technical problems as part of a team
• Bachelor's in computer science (required)
• Familiarity with modern Frontend Development, with React experience preferred
• Ability to solve problems with backend-focused languages like Go or similar compiled statically typed language
• Intermediate understanding of relational databases like MySQL

Preferred Knowledge and Skills:

The following are valued but not required, we encourage candidates to apply even if they don’t check every box.

We’re looking for strong engineers who are eager to learn and grow into these areas:

• Marketing technology platforms: Experience or exposure to tools such as Braze, AppsFlyer, Contentful, or comparable lifecycle messaging, mobile attribution, and headless CMS platforms
• Mobile development: Familiarity with React Native, native iOS/Android development, or mobile SDK integration
• AI tooling & agentic coding: Hands-on experience using AI-assisted development tools (e.g., Claude Code, GitHub Copilot, Cursor, or similar) to accelerate engineering workflows, and openness to incorporating agentic coding patterns into daily work
• Knowledgeable in writing automated tests for applications (unit, integration, endto-end)
• Familiar with the basic principles and design of RESTful APIs 
• Basic knowledge of a Microservice Architecture
• Close familiarity with software engineering tools, software development methodology, and release processes
• Experience working with event-driven architectures, message queues, or workflow orchestration tools
• Comfort working across the full stack — from backend services and data pipelines to frontend UI and mobile surfaces

About You: 

• You have relentlessly high standards - many people may think your standards are unreasonably high. You are continually raising the bar and driving those around you to deliver great results. You make sure that defects do not get sent down the line and that problems are fixed so they stay fixed.
• You’re not bound by convention - your success—and much of the fun—lies in developing new ways to do things
• You need action - speed matters in business. Many decisions and actions are reversible and do not need extensive study. We value calculated risk-taking.
• You earn trust - you listen attentively, speak candidly, and treat others respectfully.
• You have backbone; disagree, then commit - you can respectfully challenge decisions when you disagree, even when doing so is uncomfortable or exhausting. You have conviction and are tenacious. You do not compromise for the sake of social cohesion. Once a decision is determined, you commit wholly.
• You deliver results - you focus on the key inputs and deliver them with the right quality and in a timely fashion. Despite setbacks, you rise to the occasion and never settle.

Sezzle’s Technology Stack:

• Languages: Golang, Typescript, Python
• Frontend: Typescript - React and React Native
• Backend: Golang
• Database: MySQL, Postgres, Elasticsearch
• DevOps & Cloud: AWS, Kubernetes
• Version Control: Git
• CI/CD: Gitlab
• Marketing & Analytics: Braze, AppsFlyer, Contentful, Redshift, Redash
• Testing: Developer-driven, focus on automated unit, integration, and end-to-end tests
• Sezzle is focused on using open source, and we build what we can before buying!

What Makes Working at Sezzle Awesome? 

At Sezzle, we are more than just brilliant engineers, passionate data enthusiasts, out-of-the-box thinkers, and determined innovators; we are skilled musicians, yogis, cyclists, chefs, golfers, dog-lovers, and rock-climbers. We believe in surrounding ourselves with not only the best and the brightest individuals, but those that are unique and purpose-driven in all that they do. Our culture is not defined by a certain set of perks designed to give the illusion of the traditional startup culture, but rather, it is the visible example living in every employee that we hire. 

#Li-remote 

#Full-time

The salary range for this role is $2,200 - $6,000 per month (Gross in USD)

About Sezzle:

With a mission to financially empower the next generation, Sezzle is revolutionizing the shopping experience beyond payments, blending cutting-edge tech with seamless, interest-free installment plans that make shopping smarter and more accessible. We’re not just transforming payments; we’re redefining how people discover, interact with, and purchase the things they love while driving real impact on merchant sales through increased conversions and higher order values. As we continue to shape the future of fintech and retail, we’re building an innovative, dynamic team passionate about creating more than just a transaction but a truly unique shopping journey. If you’re excited about pushing boundaries in tech and delivering a game-changing experience for consumers and merchants alike, come join us at Sezzle and help create the future of shopping!

About the Role: 

We are seeking a talented and motivated Mobile Engineer who is best in class with a high IQ plus a high EQ. This role presents an exciting opportunity to thrive in a dynamic, fast-paced environment within a rapidly growing team, with abundant prospects for career advancement.

Compensation

The compensation range for the role is as follows:

• Mid: $3,500 - $6,000 USD per month
• Junior: $2,200 - $3,500 USD per month

Key Role Responsibilities: 

• Help own and build out new features within our cross-platform TypeScript React Native app, and Golang backend APIs.
• Manage our releases, using tools like cohorting, feature flags, and app-store infrastructure to ensure a safe rollout to our millions of active users.
• Maintain a strong working relationship with product, design, and the business to ensure stakeholder needs are being evaluated and met.
• Work with the team to continuously build clean, scalable, robust, and testable code.
• Develop a deep working knowledge of your application, data domain, and KPIs.

What We Look For:

• 3+ years of professional mobile development experience, with at least 6+ months in React Native or Similar technology such as Flutter.
• Experience developing and delivering a mobile application to Apple and Google’s mobile app stores.
• Strong familiarity with modern Frontend Development, Javascript or Typescript, and building applications with React Native, or similar cross-platform framework.
• Deep understanding of React Native architecture, hooks, context, navigation patterns, and performance optimization.
• Understanding of relational databases like MySQL.
• Strong familiarity with unit testing, integration testing, and E2E testing (Jest, React Native Testing Library, Detox, Appium, etc.).
• Ability to lead features end-to-end — from requirements, design, implementation, deployment, monitoring, and improvement.
• Capable of performing high-quality code reviews with focus on maintainability, clarity, and best practices.
• Drives technical decisions, proposes improvements, and elevates code quality across the team.
• Works well with product managers, designers, backend teams, and QA.
• Bachelor's degree in computer science

Preferred Knowledge and Skills:

• Ability to solve problems with backend-focused languages like Go, Python, Java or similar.
• Familiarity with typical microservice architecture composed of HTTP APIs.
• Experience working with native code on iOS, Android.
• Knowledge of mobile CI/CD pipelines (Fastlane, Bitrise, GitHub Actions, etc.).

About You: 

• • You have relentlessly high standards - many people may think your standards are unreasonably high. You are continually raising the bar and driving those around you to deliver great results. You make sure that defects do not get sent down the line and that problems are fixed so they stay fixed.
  • You’re not bound by convention - your success—and much of the fun—lies in developing new ways to do things
  • You need action - speed matters in business. Many decisions and actions are reversible and do not need extensive study. We value calculated risk-taking.
  • You earn trust - you listen attentively, speak candidly, and treat others respectfully.
  • You have backbone; disagree, then commit - you can respectfully challenge decisions when you disagree, even when doing so is uncomfortable or exhausting. You have conviction and are tenacious. You do not compromise for the sake of social cohesion. Once a decision is determined, you commit wholly.

Sezzle’s Technology Stack:

• Languages: Golang, Typescript, Python
• Frontend: Typescript - React and React Native
• Backend: Golang
• Database: MySQL, Postgres, Elasticsearch
• DevOps & Cloud: AWS, Kubernetes
• Version Control: Git
• CI/CD: Gitlab
• Testing: Developer-driven, focus on automated unit, integration, and end-to-end tests
• Sezzle is focused on using open source, and we build what we can before buying!

What Makes Working at Sezzle Awesome? 

At Sezzle, we are more than just brilliant engineers, passionate data enthusiasts, out-of-the-box thinkers, and determined innovators; we are skilled musicians, yogis, cyclists, chefs, golfers, dog-lovers, and rock-climbers. We believe in surrounding ourselves with not only the best and the brightest individuals, but those that are unique and purpose-driven in all that they do. Our culture is not defined by a certain set of perks designed to give the illusion of the traditional startup culture, but rather, it is the visible example living in every employee that we hire. 

#Li-remote #Full-time

The mission of Speechify is to make sure that reading is never a barrier to learning.

Over 50 million people use Speechify’s text-to-speech products to turn whatever they’re reading – PDFs, books, Google Docs, news articles, websites – into audio, so they can read faster, read more, and remember more. Speechify’s text-to-speech reading products include its iOS app, Android App, Mac App, Chrome Extension, and Web App. Google recently named Speechify the Chrome Extension of the Year and Apple named Speechify its App of the Day.

Today, nearly 200 people around the globe work on Speechify in a 100% distributed setting – Speechify has no office. These include frontend and backend engineers, AI research scientists, and others from Amazon, Microsoft, and Google, leading PhD programs like Stanford, high growth startups like Stripe, Vercel, Bolt, and many founders of their own companies.

Overview

With the growth of our iOS app, being the #18 productivity app in the App Store category and also our recent recognition as Apple's 2025 Design Award for inclusivity, we find the need for a Senior iOS Engineer to help us support the new user base as well as work on new and exciting projects to push our missing forward.   

This is a key role and ideal for someone who thinks strategically, enjoys fast-paced environments, passionate about making product decisions, and has experience building great user experiences that delight users.

We are a flat organization that allows anyone to become a leader by showing excellent technical skills and delivering results consistently and fast. Work ethic, solid communication skills, and obsession with winning are paramount. 

Our interview process involves several technical interviews and we aim to complete them within 1 week. 

What You’ll Do

• Opportunity to lead key engineering and product decisions
• Actively shipping production code for the Speechify iOS app
• Work within a dedicated product team
• Participate in product discussions to shape the product roadmap
• Maintain and enhance the existing complex app architecture

An Ideal Candidate Should Have

• Experience. You've worked on products that scaled to a large user base
• Track record. You have worked on various products from inception to decent traction. You have been responsible for engineering the product
• Customer obsession. We expect every team member whose responsibilities directly impact customers to be constantly obsessed about providing the best possible experience
• Product thinking. You make thoughtful decisions about the evolution of your product and support internal teams and designers into taking the right direction
• Speed. You work quickly to generate ideas and know how to decide which things can ship now and what things need time
• Focus. We’re a high-growth startup with a busy, remote team. You know how and when to engage or be heads down
• Technical skills. Swift, SwiftUI

Technical Requirements:

• Swift Programming Language
• SwiftUI experience
• Experience in Multithreading Programming
• Working with CI/CD infrastructure
• Experience with Fastlane
• SOLID principles, the ability to write every single class according to SOLID
• Experience with Git and understanding of different Git strategies

What We offer:

• A fast-growing environment where you can help shape the company and product
• An entrepreneurial crew that supports risk, intuition, and hustle
• The opportunity to make a big impact in a transformative industry
• A competitive salary, a collegiate atmosphere, and a commitment to building a great asynchronous culture
• Work on a product that millions of people use and where daily feedback includes users sharing that they cried when they first found the product because it was so impactful on their lives
• Support people with learning differences like Dyslexia, ADD, Low Vision, Concussions, Autism, and Second Language Learners, and give reading superpowers to professionals all over the world
• Work in one of the fastest growing sectors of tech: Intersection of Artificial Intelligence and Audio

Think you’re a good fit for this job? 

Tell us more about yourself and why you're interested in the role when you apply.
And don’t forget to include links to your portfolio and LinkedIn.

Not looking but know someone who would make a great fit? 

Refer them! 

Speechify is committed to a diverse and inclusive workplace.

Speechify does not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status.

The mission of Speechify is to make sure that reading is never a barrier to learning.

Over 50 million people use Speechify’s text-to-speech products to turn whatever they’re reading – PDFs, books, Google Docs, news articles, websites – into audio, so they can read faster, read more, and remember more. Speechify’s text-to-speech reading products include its iOS app, Android App, Mac App, Chrome Extension, and Web App. Google recently named Speechify the Chrome Extension of the Year and Apple named Speechify its Design award winner for inclusivity for 2025.

Today, nearly 200 people around the globe work on Speechify in a 100% distributed setting – Speechify has no office. These include frontend and backend engineers, AI research scientists, and others from Amazon, Microsoft, and Google, leading PhD programs like Stanford, high growth startups like Stripe, Vercel, Bolt, and many founders of their own companies.

Overview

With the growth of our Android app, being the most used text-to-speech app in the Play Store, we find the need for a Senior Android Engineer to help us support the new user base as well as work on new and exciting projects to push us forward.   

This is a key role and ideal for someone who thinks strategically, enjoys fast-paced environments, passionate about making product decisions, and has experience building great user experiences that delight users.

We are a flat organization that allows anyone to become a leader by showing excellent technical skills and delivering results consistently and fast. Work ethic, solid communication skills, and obsession with winning are paramount. 

Our interview process involves several technical interviews and we aim to complete them within 1 week. 

What You’ll Do

• Owning major features and working closely with our design team - take ownership of features inside the app and become responsible of delivering high quality features
• Shape the future of our Android team
• Own, maintain and improve reliability metrics for key features
• Participate in discussions across different teams - Product, Design, Engineering
• Review pull requests, and support other teammates
• Handle critical issues or cope with unexpected challenges 
• Take ownership of feature releases and provide nightly builds for the QA team

An Ideal Candidate Should Have

• 5+ years of software engineering experience
• Familiarity with Android components
• Experience building or contributing to at least one Android app
• Product design intuition and user empathy
• Drive to push the boundaries of Android UI/UX
• Understanding of the importance of tests and how to approach writing tests
• Self-drive to improve the app and codebase above and beyond what's outlined in the spec
• Rock solid experience with Kotlin, Kotlin Coroutines, Kotlin Flow, Dagger 2, MVVM, Clean Architecture, Background Services, Music Player Service, Android Animations, Jetpack Navigation, JUnit tests
• Excellent communication skills
• User oriented problem solving approach
• Driven with continuous feedback from leaders

Bonus:

• Experience building, maintaining, or otherwise contributing to open source projects in Android
• Experience with iOS, Web or NodeJS

Technologies we use:

• Kotlin
• Kotlin Coroutines
• Kotlin Flow
• Jetpack Navigation
• Dagger 2
• Room
• Custom Views, Canvas & Paint
• Jetpack Compose
• JUnit

What We offer:

• A fast-growing environment where you can help shape the company and product.
• An entrepreneurial-minded team that supports risk, intuition, and hustle.
• A hands-off management approach so you can focus and do your best work.
• An opportunity to make a big impact in a transformative industry.
• Competitive salaries, a friendly and laid-back atmosphere, and a commitment to building a great asynchronous culture.
• Opportunity to work on a life-changing product that millions of people use.
• Build products that directly impact and support people with learning differences like dyslexia, ADD, low vision, concussions, autism, and more.
• Work in one of the fastest growing sectors of tech, the intersection of artificial intelligence and audio.

Think you’re a good fit for this job? 

Tell us more about yourself and why you're interested in the role when you apply.
And don’t forget to include links to your portfolio and LinkedIn.

Not looking but know someone who would make a great fit? 

Refer them! 

Speechify is committed to a diverse and inclusive workplace. 

Speechify does not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status.

The mission of Speechify is to make sure that reading is never a barrier to learning.

Over 50 million people use Speechify’s text-to-speech products to turn whatever they’re reading – PDFs, books, Google Docs, news articles, websites – into audio, so they can read faster, read more, and remember more. Speechify’s text-to-speech reading products include its iOS app, Android App, Mac App, Chrome Extension, and Web App. Google recently named Speechify the Chrome Extension of the Year and Apple named Speechify its 2025 Design Award winner for Inclusivity.  

Today, nearly 200 people around the globe work on Speechify in a 100% distributed setting – Speechify has no office. These include frontend and backend engineers, AI research scientists, and others from Amazon, Microsoft, and Google, leading PhD programs like Stanford, high growth startups like Stripe, Vercel, Bolt, and many founders of their own companies.

Overview

The responsibilities of our Platform team include building and maintaining all backend services, including, but not limited to, payments, analytics, subscriptions, new products, text to speech, and external APIs.

This is a key role and ideal for someone who thinks strategically, enjoys fast-paced environments, is passionate about making product decisions, and has experience building great user experiences that delight users.

We are a flat organization that allows anyone to become a leader by showing excellent technical skills and delivering results consistently and fast. Work ethic, solid communication skills, and obsession with winning are paramount. 

Our interview process involves several technical interviews and we aim to complete them within 1 week. 

What You’ll Do

• Design, develop, and maintain robust APIs including public TTS API, internal APIs like Payment, Subscription, Auth and Consumption Tracking, ensuring they meet business and scalability requirements
• Oversee the full backend API landscape, enhancing and optimizing for performance and maintainability
• Collaborate on B2B solutions, focusing on customization and integration needs for enterprise clients
• Work closely with cross-functional teams to align backend architecture with overall product strategy and user experience

An Ideal Candidate Should Have

• Proven experience in backend development: TS/Node (required)
• Direct experience with GCP and knowledge of AWS, Azure, or other cloud providers
• Efficiency in ideation and implementation, prioritizing tasks based on urgency and impact
• Preferred: Experience with Docker and containerized deployments
• Preferred: Proficiency in deploying high availability applications on Kubernetes

What We Offer

• A dynamic environment where your contributions shape the company and its products
• A team that values innovation, intuition, and drive
• Autonomy, fostering focus and creativity
• The opportunity to have a significant impact in a revolutionary industry
• Competitive compensation, a welcoming atmosphere, and a commitment to an exceptional asynchronous work culture
• The privilege of working on a product that changes lives, particularly for those with learning differences like dyslexia, ADD, and more
• An active role at the intersection of artificial intelligence and audio – a rapidly evolving tech domain

Think you’re a good fit for this job? 

Tell us more about yourself and why you're interested in the role when you apply.
And don’t forget to include links to your portfolio and LinkedIn.

Not looking but know someone who would make a great fit? 

Refer them! 

Speechify is committed to a diverse and inclusive workplace. 

Speechify does not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status.

Are you a Kotlin expert eager to shape the future of AI? Large-scale language models are evolving from chatbots into powerful developer assistants capable of reasoning about complex software systems. With high-quality engineering data, tomorrow’s AI can support developers in solving real-world problems faster and more accurately. That training data begins with you—your coding expertise will help power the next generation of AI.

We’re looking for Kotlin specialists who can take real-world engineering scenarios—such as bug reports or feature requests in a Git repository—and produce clean, efficient, and idiomatic solutions using the Kotlin programming language. You’ll create high-quality code patches that reflect modern Android development practices and ensure technical correctness, maintainability, and clarity.

You should have hands-on experience with modern Android and Kotlin development, including Jetpack Compose, Kotlin Coroutines, and Jetpack libraries such as Room, WorkManager, Datastore, ViewModel, and Hilt. Familiarity with build.gradle configuration, dependency management, and networking libraries such as OkHttp, Retrofit, and Coil is also important. Experience with Android multimedia tools (CameraX, ExoPlayer, Media3) is a plus.

On a typical day, you’ll evaluate AI-generated code, correct errors, implement optimized Kotlin solutions, and document best practices that demonstrate modern Android design patterns and coding conventions.

A strong background in Android software development is required, with demonstrable experience building and maintaining production-level Kotlin applications. Clear, structured communication and the ability to explain technical decisions are essential.

We offer a pay range of $35+ per hour, with the exact rate determined after evaluating your experience, expertise, and geographic location. Final offer amounts may vary from the pay range listed above. As a contractor, you’ll supply a secure computer and high-speed internet; company-sponsored benefits such as health insurance and PTO do not apply.

Job title: Master - Kotlin Coding Specialist – AI Trainer
Employment type: Contract
Workplace type: Remote
Seniority level: Mid - Senior Level

Want to help us, help others? We’re hiring! 

GoFundMe is a global community of over 150 million people who come together every day with the common purpose of helping one another. Our mission is to help people help each other through our best in class technology. In 2022, GoFundMe joined together with Classy, a leading nonprofit fundraising software company that enables nonprofits to connect supporters with the causes they care about. Together, we have empowered people and organizations to raise more than $30 billion since 2010. Our vision is to become the most helpful place in the world.

Join us! The GoFundMe team is looking for our next Android Engineer to join the Mobile team, which supports the GoFundMe platform cross-functionally.

This is a hybrid position. Candidates considered for this role will be located in Buenos Aires, Argentina.

The Job…

• Collaborate with product managers to define clear requirements, deliverables, and milestones.
• Drive architectural, product and technology decisions
• Implement new features from scratch
• Translate designs and wireframes into high-quality code
• Analyze and optimize UI and back-end application code for efficiency and performance

You… 

• 5+ years of android development experience + BA/BS degree in Computer Science or equivalent
• High proficiency in Kotlin and deep understanding of the Android platform
• Knowledge of object-oriented software development
• Understands and utilizes Android UI design principles, patterns, and best practices
• Experience with Multi-Threading and memory management specific to mobile devices
• Experience with caching mechanisms
• Experience writing unit tests and testable code
• Familiarity with API and backend tech stack.
• Excellent problem solving, critical thinking and communication skills

Why you’ll love it here

• Make an Impact: Be part of a mission-driven organization making a positive difference in millions of lives every year.
• Innovative Environment: Work with a diverse, passionate, and talented team in a fast-paced, forward-thinking atmosphere.
• Collaborative Team: Join a fun and collaborative team that works hard and celebrates success together.
• Competitive Benefits: Enjoy competitive pay and comprehensive healthcare benefits.
• Holistic Support: Enjoy financial assistance for things like hybrid work, family planning, along with generous parental leave, flexible time-off policies, and mental health and wellness resources to support your overall well-being.
• Growth Opportunities: Participate in learning, development, and recognition programs to help you thrive and grow.
• Commitment to DEI: Contribute to diversity, equity, and inclusion through ongoing initiatives and employee resource groups.
• Community Engagement: Make a difference through our volunteering program.

We live by our core values: impatient to be great, find a way, earn trust every day, fueled by purpose. Be a part of something bigger with us!

GoFundMe is proud to be an equal opportunity employer that actively pursues candidates of diverse backgrounds and experiences.  We do not discriminate on the basis of race, color, religion, ethnicity, nationality or national origin, sex, sexual orientation, gender, gender identity or expression, pregnancy status, marital status, age, medical condition, mental or physical disability, or military or veteran status.

If you require a reasonable accommodation to complete a job application or a job interview or to otherwise participate in the hiring process, please contact us at accommodationrequests@gofundme.com. 

Global Data Privacy Notice for Job Candidates and Applicants:

Depending on your location, the General Data Protection Regulation (GDPR) or certain US privacy laws may regulate the way we manage the data of job applicants. Our full notice outlining how data will be processed as part of the application procedure for applicable locations is available here. By submitting your application, you are agreeing to our use and processing of your data as required. 

Learn more about GoFundMe:

We’re proud to partner with GoFundMe.org, an independent public charity, to extend the reach and impact of our generous community, while helping drive critical social change. You can learn more about GoFundMe.org’s activities and impact in their FY ‘25 annual report.

Our annual “Year in Help” report reflects our community’s impact in advancing our mission of helping people help each other.

For recent company news and announcements, visit our Newsroom.

As part of Fireblocks, Dynamic represents the next evolution of non-custodial wallet infrastructure. Dynamic is Fireblocks’ embedded wallet platform, purpose-built for developers who want to bring crypto and stablecoin experiences into modern applications without complexity. Together, Fireblocks and Dynamic are building the most complete, secure, and developer-friendly wallet infrastructure in the industry by combining institutional-grade security with consumer-grade experiences.

About the Team

Dynamic was founded in 2021 with a simple vision: every app and website will have a wallet component. That vision is rapidly becoming reality. Wallets are no longer limited to crypto-native products, they are becoming foundational infrastructure for payroll, remittances, and global payments. Dynamic powers wallet-based experiences for leading crypto and fintech teams including Kraken, zerohash, Magic Eden, and more.

Dynamic builds and maintains developer-first SDKs that enable teams to seamlessly integrate embedded wallet functionality directly into their applications. These embedded wallets allow end users to create, manage, and use wallets without leaving the product experience, making wallets feel like a native part of modern fintech and crypto apps.

As part of Fireblocks, the Dynamic team continues to build and scale the infrastructure and developer tooling that has onboarded 50M+ wallets across crypto and fintech applications. In this context, Dynamic powers the application-layer wallet experience and developer tooling, complementing Fireblocks’ core custody, security, and transaction infrastructure. The team operates with a strong product mindset and deep focus on security, reliability, scalability, and exceptional developer experience. Engineers at Dynamic build secure-by-default systems and approach their work with a strong customer focus, balancing technical excellence with real-world user needs. You will be joining a passionate group that moves fast, works with the biggest names in payments and fintech, and is defining how the next generation of financial applications are built.

What You’ll Do

• Design and implement high-quality native mobile SDKs that enable developers to integrate embedded wallet functionality into their applications, with a strong focus on API ergonomics, performance, and reliability.
• Own SDK features end-to-end: from API design and architecture, through implementation and testing, to release, versioning, and developer documentation.
• Build and maintain secure, reliable SDK components for wallet operations, including cryptographic operations, blockchain interactions, and security-sensitive flows.
• Define and evolve the SDK architecture to support long-term maintainability, backward compatibility, and adoption across diverse customer applications.
• Build sample applications and demos that showcase SDK capabilities and serve as integration references for customers.
• Create clear, comprehensive SDK documentation and integration guides.
• Work with developer relations and support teams to address customer integration challenges.
• Raise the bar for quality and operational excellence by establishing best practices around testing, observability, releases, and code health.
• Contribute to a culture of ownership and execution, leading by example through hands-on work, code reviews, documentation, and knowledge sharing.

What You’ll Bring

• 5+ years of software engineering experience, with deep focus on mobile development and shipping production-grade SDKs.
• Demonstrated track record of building and shipping high-quality code, with work you can point to and discuss in depth.
• Strong hands-on experience with iOS (Swift) and/or Android (Kotlin); experience with React Native or other cross-platform frameworks, and familiarity with all.
• Experience building mobile SDKs or shared libraries, including API design, versioning, packaging, and long-term maintenance across platforms.
• Experience with blockchain-enabled mobile systems, including wallet flows, signing, and on-chain interactions.
• Experience working on security-sensitive mobile software, such as key management, secure storage, cryptography, or financial products.
• Strong grasp of mobile engineering best practices, including CI/CD, automated testing, release management, and observability.
• A get-things-done mindset with the ability to independently own problems and deliver end-to-end solutions.
• Comfortable making long-term architectural decisions while remaining pragmatic and adaptable.
• B.Sc. in Computer Science / Engineering or equivalent practical experience.
• Remote role in a distributed team; preference for candidates in the Americas time zone.

Big Advantages

• Rust and/or WebAssembly (Wasm) experience, particularly building cross-platform SDKs consumed by mobile apps.
• Experience designing shared core logic used across iOS and Android.
• Experience with advanced mobile security primitives (secure hardware, MPC, low-level crypto).
• Prior experience owning or founding a mobile platform or SDK from scratch.

We're looking for a Junior React Native Developer to join our multicultural team and be part of the full development cycle of web and mobile apps: including understanding business needs, designing solutions for specific problems, and developing the product. They should demonstrate a willingness to learn new things from other team members and best practices around them, and collaborate with different roles to achieve the best results. The goal is to develop high-quality software, providing value aligned with our client's business needs and our high standards.
This position is open to candidates currently living in Montevideo or Buenos Aires.

What are the main responsibilities of this role?

• Develop high-quality code, which is well-designed and testable, supported by more experienced developers.
• Active participation and collaboration with the team to achieve the project goals. For example, by actively participating in instances of the project like planning and review calls, maintenance of artifacts used in the project, etc.
• Write meaningful code reviews.
• Execute the right level of documentation for the project, for example, readme, API documentation.
• Collaborate with internal initiatives.

Which skills and experience do we envision for this role?

• +1 year of experience in the IT field.
• Software experience from degree studies.
• Experience with React Native to build mobile applications, including functional components, hooks, and basic state management.
• Experience with JavaScript and TypeScript, and familiarity with consuming RESTful APIs.
• Basic understanding of mobile app concepts (navigation, lifecycle, and platform differences between iOS and Android).
• Basic knowledge of testing concepts and tools like Jest or React Native Testing Library.
• Intermediate knowledge of design patterns and most used architectures.
• Experience with Git and version control workflows.
• Intermediate to advanced English skills.
• Ability to communicate with different stakeholders: team, client, managers.
• Experience working in Agile environments using methodologies such as Scrum, including estimation techniques, collaborating on user story writing, and defining acceptance criteria.
• Experience with AI development tools such as Cursor, GitHub Copilot, or Claude.

Join our team and enjoy:

• Access to Rootstrap University, Conferences/Certifications, and a Mentorship Program for your professional growth.
• Learning Bonus.
• Opportunities to organize cross-functional initiatives and receive 360 Feedback to improve your skills continuously.
• The flexibility to work remotely or from our offices in Montevideo or Buenos Aires with a flexible schedule and a Workation program available after the first year with the company. During the first year, we encourage a hybrid work dynamic to support onboarding, collaboration, and continuous guidance as you grow into the role.
• Gym benefits, psychological counseling, and weekly lunch reimbursements with special foods in the offices.
• An Onboarding kit and access to cutting-edge technologies and tools to make your work easier.
• Referrals program bonuses, After offices, Prizes, and special occasion gifts to celebrate your achievements.
• People Care referent to support your well-being and personal development.

We value your well-being and happiness. We grow together!

How we work:

• We offer a flexible and diverse work environment that fosters multicultural talent
• We value autonomy and creativity. We want people to bring ideas to the table and to think as leaders.
• We put our focus on real human connections.
• We have a commitment to excellence.

At Rootstrap, we help companies launch, grow, and scale their digital products and services. With over 290 global team members, we’ve built products for clients like MasterClass, Universal, Google, as well as innovative startups and inspired pioneers. Earning regular recognition with Fastest Growing Company & Best B2B Service Provider Industry accolades, our team prides itself on making an impact that transcends our efforts. We have offices in Uruguay, Argentina, and Colombia, providing the flexibility to work remotely. Know more about life at Rootstrap visiting https://www.rootstrap.com/careers .

We embrace an AI-first mindset, continuously exploring how artificial intelligence can enhance the way we build products, solve problems, and deliver value. Across all stages of the development process, we encourage our teams to actively leverage AI to boost productivity and drive innovation.

All of our candidate searches are covered under Uruguayan Law 19691 (the purpose of this law is to promote the inclusion of people with disabilities).

As part of our Security and Compliance process, all seniority levels and roles must follow the company’s information security policies and secure development practices, and promptly report any suspected security incidents or vulnerabilities.

Behind the user-friendly iOS and Android apps and webpage that work across the world is the engineering team.  We are in charge of creating, developing, improving, and maintaining all Fever services so that more people can have an amazing experience. 

About the role

As a SRE / Performance Engineer at Fever you will leverage your expertise in Kubernetes to address performance issues in Cloud Native Environments, utilizing strong autonomy and research capabilities for effective debugging and problem-solving.

Join us if you thrive in a fast-paced environment and are excited about pushing the boundaries of what's possible. This is an opportunity to have real impact in a high-growth global category leader.

About you

Must Have Skills

• Strong understanding of Kubernetes, Linux administration, and troubleshooting. Experience with high-traffic load Kubernetes Clusters in mixed Cloud Native environments.
• Proficiency in REL metrics for Kubernetes and debugging unknown issues.
• Strong knowledge of Networking, TLS, and HTTP reverse proxies.
• Can communicate in English fluently and are comfortable collaborating with colleagues remotely.
• Team player - passionate about new technologies.
• Willingness to implement a robust Performance Observability, Incident Response foundations and Dynamic Tracing tools.

If would be nice if you have: 

• Knowledge on tools such as Terraform, Ansible.
• Systems, services monitoring, and alerting tools (Datadog, Zabbix, Prometheus, Cloudwatch).
• Understanding of Centralized logging techniques (ELK/EFK Stack), visualization (Linux command line, Kibana).
• The ability to provide consistent documentation, Git for version control.
• Programmatic and reproducible systems operations.
• Knowledge on AWS services and EBPF.

Benefits & Perks

• "Relación de dependencia" contract.
• Opportunity to have a real impact in a high-growth global category leader
• 40% discount on all Fever events and experiences
• Osde 410 as medical insurance
• Home office friendly anywhere in Argentina
• Responsibility from day one and professional and personal growth
• Great work environment with a young, international team of talented people to work with!
• English Lessons
• Gympass
• Attractive compensation package consisting of base salary and the potential to earn a significant bonus for top performance. (Including Base, Variable, and Stock Options)

About the process

Fever aims to provide the best-fastest possible experience to our candidates. This is how it would look like:

• Talent Interview - 1h: An intro to Fever, our culture and a conversation about your background and experience.
• Technical Assignment: Your opportunity to demonstrate all you know! We would like to receive it back within 3 days. 
• Team Interview - 2h: A discussion about your proposed solution to the technical challenge and your chance to make sure you know everything you need about Fever.
• Engineering Manager Interview - 1h: A deep dive into your technical expertise and your opportunity to ask anything you need to know about your day to day at Fever. 

Behind the user-friendly iOS and Android apps and webpage that work across the world is the engineering team. We are in charge of creating, developing, improving, and maintaining all Fever services so that more people can have an amazing experience.

About the role

What are we looking for:

Location: Argentina

We are looking for a Senior Full Stack Engineer with outstanding software development talent proven by great work results and experience. Somebody that cares about code quality and not just get things done, but get things done right.

• You'll work as part of an agile, cross functional team with other high skilled software engineers, together with the product designers.
• You will create production grade code and will implement solutions designed to handle high levels of traffic.
• Mentor other team members through code reviews, sessions of architecture design and pair programming.
• You will be mentored by other team members on the areas you have less expertise

About you

Must have skills:

• Strong knowledge on good practices, testing and design patterns.
• Javascript as your main frontend language, with at least one major known framework (Big plus if the framework is Angular)

Requirements:

• You are proficient in business English
• You know how to deliver code from development to production
• Experience with RESTful APIs (implementation and consumption), OpenAPI and api-first development
• Knowledge of relational databases and SQL with big amount of data

We use these technologies, so it would be a plus if you have experience in:

• Python experience desirable but we are open to other backend programming languages. 
• Django/Flask
• PostgreSQL
• Redis
• Experience with event streaming platforms such as Kafka or RabbitMQ
• Experience working on agile methodology
• AWS, Docker, Kubernetes
• Angular

Benefits & Perks

• "Relación de dependencia" contract.
• Opportunity to have a real impact in a high-growth global category leader
• 40% discount on all Fever events and experiences
• Osde 410 as medical insurance
• Home office friendly anywhere in Argentina
• Responsibility from day one and professional and personal growth
• Great work environment with a young, international team of talented people to work with!
• English Lessons
• Gympass
• Attractive compensation package consisting of base salary and the potential to earn a significant bonus for top performance. (Including Base, Variable, and Stock Options)

About the process

Fever aims to provide the best-fastest possible experience to our candidates. This is how it would look like:

• Talent Interview - 1h: An intro to Fever, our culture and a conversation about your background and experience.
• Technical Assignment: Your opportunity to demonstrate all you know! We would like to receive it back within 3 days. 
• Team Interview - 2h: A discussion about your proposed solution to the technical challenge and your chance to make sure you know everything you need about Fever.
• Engineering Manager Interview - 1h: A deep dive into your technical expertise and your opportunity to ask anything you need to know about your day to day at Fever. 

Behind the user-friendly iOS and Android apps and webpage that work across the world is the engineering team.  We are in charge of creating, developing, improving, and maintaining all Fever services so that more people can have an amazing experience. 

About the role

Location: Argentina

• You’ll be part of the Engineering team and adding value to our applications, allowing people to reach the best experiences in their cities.
• You’ll be working primarily with Angular and Astro to build scalable, high-performance web applications.

Key responsibilities

• Design easy-to-use, performant, and exciting web experiences serving thousands of users around the world.
• You'll work as part of an agile, cross-functional team with other full-stack, mobile, backend, and frontend engineers, together with the product designers.
• Understand the technical trade-offs of different solutions, implement them,m and make them scalable.
• Have a product-oriented mindset and work towards the best outcomes for the product.
• Collaborate with the larger team via regular design critiques and working sessions

What would you do at Fever?

On your first month in Fever:

• You will be fully integrated into the team. During this month, you will have already participated in planning and retrospectives of the team, and you will have met the departments of Fever.
• You will get familiar with Fever’s tech stack and frameworks used to develop our applications.
• You will attend some of the Fever Original’s experiences, like Candlelight

After 3 months in Fever:

• You’ll be able to come up with solutions to new, difficult problems, and your developments will create new business opportunities
• You’ll have responsibilities over some of the shared libraries across the teams
• You will participate in some of the hackdays or hackathons we organise with other teams, and you will mostly know everybody from engineering.

On your 6th month in Fever:

• You’ll improve the performance, scalability, and infrastructure of the applications
• You’ll be mentoring other new joiners to the team
• You will participate in some of the team-building activities we organise for your team or the whole engineering team

About you

• Deep knowledge of Angular (>= 16), SSR, HTML5, CSS3+, SASS, Typescript, and JavaScript.
• You’re smart, get stuff done, have great energy, and thrive in a fast-paced environment.
• You've solved frontend challenges in large-scale applications, considering performance, scalability, and best practices.
• You have experience solving cross-browser compatibility issues.
• You have deep experience creating responsive designs. 
• You have a strong understanding of RESTful APIs, doing API-first development, and working with OpenAPI specifications.
• You comply with defined coding standards, resulting in high-quality code. You can't think of coding without tests.
• You are proficient in business English

It would be a plus if you...

• Have deep knowledge of Typescript, SASS, NodeJS, or Playwright.
• Are familiar with content-heavy platforms, multi-device optimization, internationalization, localization, or real-time interactions. 
• Are comfortable solving technical challenges outside of pure Front-end topics.
• You have worked with high-load websites.
• Have experience working with microfrontends or shared component libraries.

Benefits & Perks

• Attractive compensation package consisting of base salary and the potential to earn a significant bonus for top performance.
• Stock options.
• Opportunity to have a real impact in a high-growth global category leader
• 40% discount on all Fever events and experiences
• Osde 410 as medical insurance
• Home office friendly
• Responsibility from day one and professional and personal growth
• Great work environment with a young, international team of talented people to work with!
• English Lessons
• Gympass

About the process

Fever aims to provide the best-fastest possible experience to our candidates. This is how it would look like:

• Talent Interview - 1h: An intro to Fever, our culture and a conversation about your background and experience.
• Technical Assignment: Your opportunity to demonstrate all you know! You will have to solve a set of challenges within a time constraint. 
• Team Interview - Up to 2h: You will be asked to live-code around an already built application we will provide to you before the interview. It will also be your chance to make sure you know everything you need about Fever.

There might be one last conversation with an Engineering Lead to either mitigate potential doubts or just for you to ask your questions!

Behind the user-friendly iOS and Android apps and webpage that work across the world is the engineering team.  We are in charge of creating, developing, improving, and maintaining all Fever services so that more people can have an amazing experience. 

About the role

What are we looking for:

We are looking for a Tech Lead to join Fever with outstanding software development talent proven by great work results/experience. Somebody that cares about code quality and not just get things done, but get things done right.

• Lead engineering development for a product team.
• You have strong opinions, weakly held
• Plan and execute strategies to enable the architecture to support future requirements
• Contribute to improve team’s processes
• Mentor other experienced engineers

What would you do at Fever?

On your first month in Fever:

• You will be fully integrated into the team. You will participate in plannings, refinement and retrospectives of the team, and you will have met the departments of Fever.
• You will get familiar with Fever’s tech stack: frameworks used to develop our applications, CI/CD workflows and infrastructure that support our operations.
• You will have lots of Pull Requests merged and running in production.
• You will attend some of the Fever Original’s experiences like Candlelight.

After 3 months in Fever:

• You will be able to come up with solutions to new difficult problems, defining the solution from the architecture design to its implementation.
• You will continue creating production grade Python code designed to handle high levels of traffic, measuring the outcome of the functionalities and improving the product.
• You will participate in some of the hackdays or hackathons we organise with other teams, and you will mostly know everybody from engineering.

On your 6th month in Fever:

• You will have responsibilities over different parts of the systems, analysing the usage from the users and evolving the platform to meet the user’s needs.
• You will have participated in the launch of one of our new microservices, from 0 to production.
• You will mentor other team members through code reviews, sessions of architecture design and pair programming.
• You will participate in some of the team buildings we organise for your team or the whole engineering team.
• You will have led ambitious initiatives to bring our vision to reality

About you

Must have skills:

• Strong knowledge on good practices, testing and design patterns.
• Knowledge of relational databases. Internals and data-intensive.
• Experience on distributed systems, network communication, scalability and resilience.
• You know how to deliver code from development to production.
• You embrace a culture of full ownership.
• You are proficient in business English.
• Understanding how to deliver the best engineering solutions.
• Know what makes phenomenal product experiences.
• Welcome and embrace change and the capability to adapt to new contexts quickly.
• Willingness to improve yourself and your team.

We use these technologies, so it would be a plus if you have experience in:

• Django/Flask
• PostgreSQL
• Redis
• Celery with RabbitMQ
• Experience working on agile methodology 
• Event communication between services
• Handling services with more than 1000 request/second.
• AWS, Docker and Kubernetes

Benefits & Perks

• "Relación de dependencia" contract.
• Opportunity to have a real impact in a high-growth global category leader
• 40% discount on all Fever events and experiences
• Osde 410 as medical insurance
• Home office friendly anywhere in Argentina
• Responsibility from day one and professional and personal growth
• Great work environment with a young, international team of talented people to work with!
• English Lessons
• Gympass
• Attractive compensation package consisting of base salary and the potential to earn a significant bonus for top performance. (Including Base, Variable, and Stock Options)

About the process

Fever aims to provide the best-fastest possible experience to our candidates. This is how it would look like:

• Talent Interview - 1h: An intro to Fever, our culture and a conversation about your background and experience.
• Technical Assignment: Your opportunity to demonstrate all you know! We would like to receive it back within 3 days. 
• Team Interview - 2h: A discussion about your proposed solution to the technical challenge and your chance to make sure you know everything you need about Fever.
• Engineering Manager Interview - 1h: A deep dive into your technical expertise and your opportunity to ask anything you need to know about your day to day at Fever.