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Tech Lead, Android Core Product - Ankara, Turkey
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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.
Ready to apply?
Apply to Speechify
The salary range for this role is $4,600 - $9,500 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 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 - 9,500 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)
- 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:
- 5+ 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
Ready to apply?
Apply to SezzleThe 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
Ready to apply?
Apply to SezzleThe 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
Ready to apply?
Apply to SezzleThe 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
Ready to apply?
Apply to SezzleThe 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
Ready to apply?
Apply to SezzleThe 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
Ready to apply?
Apply to SezzleThe 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
Ready to apply?
Apply to SezzleThe 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
Ready to apply?
Apply to Sezzle
Tech Lead, Android Core Product - Istanbul, Turkey
Share this job
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.
Ready to apply?
Apply to Speechify
Kotlin Coding Specialist - Freelance AI Trainer Project
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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
Ready to apply?
Apply to Invisible Agency