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Mobile Staff Software Engineer
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About Us
Nu is one of the largest digital financial platforms in the world, with more than 122 million customers across Brazil, Mexico, and Colombia. Guided by our mission to fight complexity and empower people, we are redefining financial services in Latin America and this is still just the beginning of the purple future we're building.
Listed on the New York Stock Exchange (NYSE: NU), we combine proprietary technology, data intelligence, and an efficient operating model to deliver financial products that are simple, accessible, and human.
Our impact has been recognized by global rankings such as Time 100 Companies, Fast Company’s Most Innovative Companies, and Forbes World’s Best Bank. Visit our institutional page https://international.nubank.com.br/careers/
About Nubank’s Mobile Platform - Global Experience Design
The Mobile Platform’s mission aligns with Nubank’s commitment to delivering the best experience for our customers by ensuring a high-performing, stable, and seamless app.
Within Mobile Platform, focuses on providing user-friendly, scalable, high-performing, and cost-efficient app infrastructure components and mobile tools that enable Nubank engineers to quickly and safely test, deploy, monitor, analyze, and improve app flows and features.
Global Experience Design is one of Nubank’s building blocks, bringing together UX, design, and customer experience. The team works on evolving the app experience and the design system, connecting Mobile Platform, App Excellence, Design Systems, and App Core to create simple, consistent, and scalable experiences. We are at the heart of the Nubank app’s foundation, driving performance, infrastructure scalability, and the removal of legacy dependencies to allow our application to grow from millions to potentially billions of passionate customers.
The Opportunity
This role will involve working across a variety of technologies, including Native, Flutter, and related frameworks. We are looking for a Staff Mobile Engineer with solid experience to join the Mobile Platform team — a cross-impact engineering team responsible for building and maintaining the core infrastructure of the mobile application, optimizing our performance, and enabling product teams to deliver high-quality mobile experiences.
What We’re Looking For
Must Have:
- Proven and solid experience in technical development of mobile applications at a strategic leadership level.
- Strong technical background with Flutter and/or native mobile development (Android/iOS).
- Solid understanding of mobile software engineering principles, architectural patterns, and modularization strategies.
- Experience with server driven UI, performance optimization, dependency injection, and migration of core systems.
- Knowledge of mobile observability, monitoring, and debugging tools.
- Strong communication skills in English, with the ability to explain complex concepts to diverse audiences.
- Track record of delivering results in ambiguous, fast-paced environments.
Nice to Have:
- Experience with backend technologies, especially those integrated with mobile applications.
- Familiarity with distributed systems and large-scale app architecture.
- Contributions to internal SDKs, libraries, or mobile design systems.
- Understanding of user authentication, session management, and app state handling.
-
Leadership in global teams.
Why Join Us
- Impact at Scale: Help shape the mobile experience for millions of customers across multiple countries, with the goal of reaching billions.
- Technical Leadership: Influence the architecture and foundational technologies that all Nubank engineers rely on.
- Innovation-Driven Culture: Work in a dynamic, collaborative environment that values experimentation, continuous improvement, and engineering excellence.
- Career Growth: Develop as a strategic engineering, working on complex technical and organizational challenges.
Our Benefits
- Chance of earning equity at Nubank
- Food/ Meal Card (Vale-Refeição and/or Vale Alimentação)
- Public Transportation Commuting Benefit (Vale-Transporte)
- NuCare – Psychological, Financial and Legal Assistance Program
- Life Insurance
- Medical Plan
- Dental Plan
- NuLanguage – Language Course Program
- Nucleo - Our learning platform of courses
- Extended Parental Leave
- Daycare Allowance
- Parental Consultancy
- Work-from-home Allowance
- Gym Partnerships
- 30 days of paid vacation
- Relocation Assistance Package, if applicable
Work Model for this Role
Hybrid 2-3 times/week: Our hybrid work model brings us to the office at least twice a week, on strategic days designed to maximize team connection and collaboration. For more details, visit https://building.nubank.com/nu-hybrid-work-model/
Ready to apply?
Apply to Nubank
Pessoa Engenheira de Software Sênior - exclusiva para Pessoas com Deficiência
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Sobre Nós
O Nu é uma das maiores plataformas digitais de serviços financeiros do mundo, com mais de 122 milhões de clientes no Brasil, México e Colômbia. Guiados por nossa missão de combater a complexidade e empoderar as pessoas, estamos redefinindo os serviços financeiros na América Latina — e este é apenas o começo do futuro roxo que estamos construindo.
Listado na Bolsa de Valores de Nova York (NYSE: NU), combinamos tecnologia proprietária, inteligência de dados e um modelo operacional eficiente para oferecer produtos financeiros simples, acessíveis e humanos.
Nosso impacto tem sido reconhecido por rankings globais como Time 100 Companies, Most Innovative Companies da Fast Company e World’s Best Bank da Forbes.
Acesse nossa página institucional: https://international.nubank.com.br/careers/
Engenharia no Nubank
Soluções simples de se usar são complexas de serem construídas. No Nubank, buscamos práticas de desenvolvimento de software que permitam com que nossos produtos simplifiquem a vida dos nossos clientes. Isso significa que no ambiente de trabalho se preze por utilizar uma variedade de tecnologias, ferramentas e metodologias de trabalho que venham a atingir esses objetivos.
Se você tem interesse em fazer parte do nosso time e não trabalha com as tecnologias que utilizamos aqui, não se preocupe! Temos uma trilha de aprendizado interna para oferecer suporte nessa jornada conosco! Confira um pouco mais do que utilizamos aqui:
- Microsserviços escaláveis escritos em Clojure
- Comunicação entre serviços com Kafka
- Integração e deploy contínuo com AWS
- Armazenamento de dados com Datomic e DynamoDB
- Monitoramento e observabilidade com Prometheus
- Manutenção de uma infraestrutura com alta-disponibilidade em Kubernetes
- Moldar a experiência dos clientes interagindo com o app usando Flutter
Responsabilidades
- Trabalhar com sistemas de larga escala e distribuídos
- Colaborar na construção de microsserviços
- Praticar conhecimentos em metodologias ágeis
- Trabalhar com entrega contínua e infraestrutura como código
Estamos buscando profissionais que
- Sejam pessoas com deficiência (PcD);
- Conhecimento prático em linguagens de programação para backend;
- Prática em frameworks utilizados no desenvolvimento de backend;
- Possuam habilidade de escrever um código de fácil entendimento e manutenção;
- Que já tenha vivenciado ou estudado sobre práticas ágeis;
- O Inglês é um diferencial. É importante que você esteja confortável em participar de ambientes com comunicação em inglês, e que tenha interesse em desenvolvê-lo, uma vez que o Nubank é uma empresa global. Oferecemos um programa de idiomas interno, o NuLanguage;
- Disponibilidade para jornada de trabalho em tempo integral;
Benefícios
- Chance de ganhar capital no Nubank;
- Cartão Alimentação/Refeição (Vale Refeição e/ou Vale Alimentação)
- Benefício de deslocamento (Vale Transporte)
- NuCare – Programa de Assistência Psicológica, Financeira e Jurídica
- Seguro de vida
- Plano Médico
- Plano Odontológico
- NuLanguage – Programa de Curso de Idiomas
- Nucleo - Nossa plataforma de aprendizagem de cursos
- Licença parental estendida
- Auxílio-creche
- Subsídio para trabalhar em casa
- Parcerias com academias
- 30 dias de férias remuneradas
- Pacote de Auxílio Relocação, quando aplicável.
Modelo de trabalho para esta posição
Híbrido (2 a 3 vezes por semana)
Nosso modelo híbrido prevê a ida ao escritório pelo menos duas vezes por semana, em dias estratégicos definidos para maximizar a conexão e a colaboração entre os times. Para mais detalhes, visite https://building.nubank.com/pt-br/nu-trabalho-hibrido-modelo/
Ready to apply?
Apply to Nubank
Pessoa Engenheira de Software - exclusiva para Pessoas com Deficiência
Share this job
Sobre Nós
O Nu é uma das maiores plataformas digitais de serviços financeiros do mundo, com mais de 122 milhões de clientes no Brasil, México e Colômbia. Guiados por nossa missão de combater a complexidade e empoderar as pessoas, estamos redefinindo os serviços financeiros na América Latina — e este é apenas o começo do futuro roxo que estamos construindo.
Listado na Bolsa de Valores de Nova York (NYSE: NU), combinamos tecnologia proprietária, inteligência de dados e um modelo operacional eficiente para oferecer produtos financeiros simples, acessíveis e humanos.
Nosso impacto tem sido reconhecido por rankings globais como Time 100 Companies, Most Innovative Companies da Fast Company e World’s Best Bank da Forbes.
Acesse nossa página institucional: https://international.nubank.com.br/careers/
Engenharia no Nubank
Soluções simples de se usar são complexas de serem construídas. No Nubank, buscamos práticas de desenvolvimento de software que permitam com que nossos produtos simplifiquem a vida dos nossos clientes. Isso significa que no ambiente de trabalho se preze por utilizar uma variedade de tecnologias, ferramentas e metodologias de trabalho que venham a atingir esses objetivos.
Se você tem interesse em fazer parte do nosso time e não trabalha com as tecnologias que utilizamos aqui, não se preocupe! Temos uma trilha de aprendizado interna para oferecer suporte nessa jornada conosco! Confira um pouco mais do que utilizamos aqui:
- Microsserviços escaláveis escritos em Clojure
- Comunicação entre serviços com Kafka
- Integração e deploy contínuo com AWS
- Armazenamento de dados com Datomic e DynamoDB
- Monitoramento e observabilidade com Prometheus
- Manutenção de uma infraestrutura com alta-disponibilidade em Kubernetes
- Moldar a experiência dos clientes interagindo com o app usando Flutter
Responsabilidades
- Trabalhar com sistemas de larga escala e distribuídos
- Colaborar na construção de microsserviços
- Praticar conhecimentos em metodologias ágeis
- Trabalhar com entrega contínua e infraestrutura como código
Estamos buscando profissionais que
- Sejam pessoas com deficiência (PcD);
- Conhecimento prático em linguagens de programação para backend;
- Prática em frameworks utilizados no desenvolvimento de backend;
- Possuam habilidade de escrever um código de fácil entendimento e manutenção;
- Que já tenha vivenciado ou estudado sobre práticas ágeis;
- O Inglês não é um requisito para este processo seletivo. É importante que você esteja confortável em participar de ambientes com comunicação em inglês, e que tenha interesse em desenvolvê-lo, uma vez que o Nubank é uma empresa global. Oferecemos um programa de idiomas interno, o NuLanguage;
- Disponibilidade para jornada de trabalho em tempo integral;
Benefícios
- Chance de ganhar capital no Nubank;
- Cartão Alimentação/Refeição (Vale Refeição e/ou Vale Alimentação)
- Benefício de deslocamento (Vale Transporte)
- NuCare – Programa de Assistência Psicológica, Financeira e Jurídica
- Seguro de vida
- Plano Médico
- Plano Odontológico
- NuLanguage – Programa de Curso de Idiomas
- Nucleo - Nossa plataforma de aprendizagem de cursos
- Licença parental estendida
- Auxílio-creche
- Subsídio para trabalhar em casa
- Parcerias com academias
- 30 dias de férias remuneradas
- Pacote de Auxílio Relocação, quando aplicável.
Modelo de trabalho para esta posição
Híbrido (2 a 3 vezes por semana)
Nosso modelo híbrido prevê a ida ao escritório pelo menos duas vezes por semana, em dias estratégicos definidos para maximizar a conexão e a colaboração entre os times. Para mais detalhes, visite https://building.nubank.com/pt-br/nu-trabalho-hibrido-modelo/
Ready to apply?
Apply to Nubank
Staff Software Engineer - PJ Brazil (Business Accounts)
About Us
Nubank was founded in 2013 to free people from a bureaucratic, slow and inefficient financial system. Since then, through innovative technology and outstanding customer service, the company has been redefining people's relationships with money across Latin America.
With operations in Brazil, Mexico, and Colombia, Nubank is today one of the largest digital banking platforms and technology-leading companies in the world. Nubank was listed on the NYSE in 2021 and was recently named one of Time Magazine's 100 Most Influential Companies.
For more information, visit www.nu.com.br.
About the Role
The PJ (Business Account) team is a rapidly scaling unit within Nubank. We are looking for a Staff Software Engineer to join this high-impact team, strategically helping the growth in Brazil and beyond.
In this role, you will sit at the intersection of Product and Platform. While we are a business-focused team dedicated to moving core metrics, you will also navigate global platform challenges.
We are looking for a resourceful engineer. Someone who is excited by broad, complex problems and has the eagerness to expand our market share in a fast-moving environment.
Responsibilities
- Lead the technical design and implementation of scalable systems that power the PJ app experience for millions of business customers.
- Partner with Global Platform teams to integrate core services while maintaining a product-driven focus.
- Drive business outcomes by translating entrepreneur-specific challenges into robust, high-performance software solutions.
- Maintain technical excellence within the team through architectural discussions, code reviews, and mentorship.
- Collaborate cross-functionally across different Business Units to ensure seamless integration and a unified customer experience.
Required qualifications
- Ideally, has experience in Flutter and mobile architecture, and is equally comfortable navigating Clojure/BDC backend systems, from authentication flows and token management to BDC expressions and backend providers
- Wants to own the architectural vision for how PJ customers access, navigate, and experience their business finances, shaping decisions that will define how PJ scales across products, segments, and countries
- Can hold the platform and product tension simultaneously, thinking in systems while staying close to the customer experience, because the foundations you design directly determine what AXP can build and how fast they can ship
- Has a track record of driving alignment on hard architectural problems across multiple teams and stakeholders, bringing clarity to spaces where the path forward is genuinely unclear
- Wants to work on a horizontal, high-visibility role where your technical decisions have reach well beyond your own squad, influencing how authentication, app experience, and platform infrastructure evolve across PJ and Nubank
- Thrives in ambiguous, long-horizon initiatives and is energized by the challenge of defining what good looks like, not just executing against a spec
Location & Work Model
This role can be based in our offices in São Paulo and Campinas (Brazil) in a hybrid model (2x per week in the office), or according to current policies for the PJ team.
Diversity & Inclusion / Equal Opportunity
At Nubank, we believe that diversity is essential to building the best products and services. We are committed to creating a welcoming work environment that respects and values diversity in all its forms, and we encourage people from all backgrounds to apply. We are proud to be an equal opportunity employer and do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.
Ready to apply?
Apply to Nubank
Pessoa Engenheira de Software Mobile - exclusiva para Pessoas com Deficiência
Share this job
About Us
Nu is one of the largest digital financial platforms in the world, with more than 122 million customers across Brazil, Mexico, and Colombia. Guided by our mission to fight complexity and empower people, we are redefining financial services in Latin America and this is still just the beginning of the purple future we're building.
Listed on the New York Stock Exchange (NYSE: NU), we combine proprietary technology, data intelligence, and an efficient operating model to deliver financial products that are simple, accessible, and human.
Our impact has been recognized by global rankings such as Time 100 Companies, Fast Company’s Most Innovative Companies, and Forbes World’s Best Bank. Visit our institutional page https://international.nubank.com.br/careers/
About Nubank’s Mobile Platform and App Core
The Mobile Platform’s mission aligns with Nubank’s commitment to delivering the best experience for our customers by ensuring a high-performing, stable, and seamless app.
Within Mobile Platform, App Core focuses on providing user-friendly, scalable, high-performing, and cost-efficient app infrastructure components and mobile tools that enable Nubank engineers to quickly and safely test, deploy, monitor, analyze, and improve app flows and features.
App Core is at the heart of the Nubank app’s foundation, powering app performance, infrastructure scalability, and the removal of legacy dependencies to allow our application to grow from millions to potentially billions of fanatic customers.
The Opportunity
This role will involve working across a variety of technologies, including Native, Flutter, and related frameworks. We are looking for a Mobile Engineer with experience to join the App Core team — a cross-impact engineering team responsible for building and maintaining the core infrastructure of the mobile application, optimizing our performance, and enabling product teams to deliver high-quality mobile experiences.
What We’re Looking For
Must Have:
- Proven experience in mid-level technical mobile development.
- Tchnical background with Flutter or native mobile development (Android/iOS).
- Understanding of mobile software engineering principles, architectural patterns, and modularization strategies.
- Experience with performance optimization, dependency injection, and migration of core systems.
- Knowledge of mobile observability, monitoring, and debugging tools.
- Good communication skills in English, with the ability to explain concepts to diverse audiences.
Nice to Have:
- Knowledge backend technologies, especially those integrated with mobile applications.
- Familiarity with distributed systems and large-scale app architecture.
- Contributions to internal SDKs, libraries, or mobile design systems.
- Understanding of user authentication, session management, and app state handling.
Why Join Us
- Impact at Scale: Help shape the mobile experience for millions of customers across multiple countries, with the goal of reaching billions.
- Technical Leadership: Influence the architecture and foundational technologies that all Nubank engineers rely on.
- Innovation-Driven Culture: Work in a dynamic, collaborative environment that values experimentation, continuous improvement, and engineering excellence.
- Career Growth: Develop as a strategic engineering, working on complex technical and organizational challenges.
Our Benefits
- Chance of earning equity at Nubank
- Food/ Meal Card (Vale-Refeição and/or Vale Alimentação)
- Public Transportation Commuting Benefit (Vale-Transporte)
- NuCare – Psychological, Financial and Legal Assistance Program
- Life Insurance
- Medical Plan
- Dental Plan
- NuLanguage – Language Course Program
- Nucleo - Our learning platform of courses
- Extended Parental Leave
- Daycare Allowance
- Parental Consultancy
- Work-from-home Allowance
- Gym Partnerships
- 30 days of paid vacation
- Relocation Assistance Package, if applicable
Work Model for this Role
Hybrid 2-3 times/week: Our hybrid work model brings us to the office at least twice a week, on strategic days designed to maximize team connection and collaboration. For more details, visit https://building.nubank.com/nu-hybrid-work-model/
Ready to apply?
Apply to Nubank
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
Ready to apply?
Apply to SezzleThe 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
Ready to apply?
Apply to Sezzle
Lead Mobile Software Engineer
Share this job
About Us
Nu is one of the largest digital financial platforms in the world, with more than 122 million customers across Brazil, Mexico, and Colombia. Guided by our mission to fight complexity and empower people, we are redefining financial services in Latin America and this is still just the beginning of the purple future we're building.
Listed on the New York Stock Exchange (NYSE: NU), we combine proprietary technology, data intelligence, and an efficient operating model to deliver financial products that are simple, accessible, and human.
Our impact has been recognized by global rankings such as Time 100 Companies, Fast Company’s Most Innovative Companies, and Forbes World’s Best Bank. Visit our institutional page https://international.nubank.com.br/careers/
About Nubank’s Mobile Platform and App Core
The Mobile Platform’s mission aligns with Nubank’s commitment to delivering the best experience for our customers by ensuring a high-performing, stable, and seamless app.
Within Mobile Platform, App Core focuses on providing user-friendly, scalable, high-performing, and cost-efficient app infrastructure components and mobile tools that enable Nubank engineers to quickly and safely test, deploy, monitor, analyze, and improve app flows and features.
App Core is at the heart of the Nubank app’s foundation, powering app performance, infrastructure scalability, and the removal of legacy dependencies to allow our application to grow from millions to potentially billions of fanatic customers.
The Opportunity
This role will involve working across a variety of technologies, including Native, Flutter, and related frameworks. We are looking for a Lead Mobile Engineer with solid experience to join the App Core team — a cross-impact engineering team responsible for building and maintaining the core infrastructure of the mobile application, optimizing our performance, and enabling product teams to deliver high-quality mobile experiences.
What We’re Looking For
Must Have:
- Proven experience in senior-level technical mobile development.
- Strong technical background with Flutter and/or native mobile development (Android/iOS).
- Solid understanding of mobile software engineering principles, architectural patterns, and modularization strategies.
- Experience with performance optimization, dependency injection, and migration of core systems.
- Knowledge of mobile observability, monitoring, and debugging tools.
- Strong communication skills in English, with the ability to explain complex concepts to diverse audiences.
- Track record of delivering results in ambiguous, fast-paced environments.
Nice to Have:
- Experience with backend technologies, especially those integrated with mobile applications.
- Familiarity with distributed systems and large-scale app architecture.
- Contributions to internal SDKs, libraries, or mobile design systems.
- Understanding of user authentication, session management, and app state handling.
Why Join Us
- Impact at Scale: Help shape the mobile experience for millions of customers across multiple countries, with the goal of reaching billions.
- Technical Leadership: Influence the architecture and foundational technologies that all Nubank engineers rely on.
- Innovation-Driven Culture: Work in a dynamic, collaborative environment that values experimentation, continuous improvement, and engineering excellence.
- Career Growth: Develop as a strategic engineering, working on complex technical and organizational challenges.
Our Benefits
- Chance of earning equity at Nubank
- Food/ Meal Card (Vale-Refeição and/or Vale Alimentação)
- Public Transportation Commuting Benefit (Vale-Transporte)
- NuCare – Psychological, Financial and Legal Assistance Program
- Life Insurance
- Medical Plan
- Dental Plan
- NuLanguage – Language Course Program
- Nucleo - Our learning platform of courses
- Extended Parental Leave
- Daycare Allowance
- Parental Consultancy
- Work-from-home Allowance
- Gym Partnerships
- 30 days of paid vacation
- Relocation Assistance Package, if applicable
Work Model for this Role
Hybrid 2-3 times/week: Our hybrid work model brings us to the office at least twice a week, on strategic days designed to maximize team connection and collaboration. For more details, visit https://building.nubank.com/nu-hybrid-work-model/
Ready to apply?
Apply to Nubank
Senior Mobile Software Engineer
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About Us
Nu is one of the largest digital financial platforms in the world, with more than 122 million customers across Brazil, Mexico, and Colombia. Guided by our mission to fight complexity and empower people, we are redefining financial services in Latin America and this is still just the beginning of the purple future we're building.
Listed on the New York Stock Exchange (NYSE: NU), we combine proprietary technology, data intelligence, and an efficient operating model to deliver financial products that are simple, accessible, and human.
Our impact has been recognized by global rankings such as Time 100 Companies, Fast Company’s Most Innovative Companies, and Forbes World’s Best Bank. Visit our institutional page https://international.nubank.com.br/careers/
About Nubank’s Mobile Platform and App Core
The Mobile Platform’s mission aligns with Nubank’s commitment to delivering the best experience for our customers by ensuring a high-performing, stable, and seamless app.
Within Mobile Platform, App Core focuses on providing user-friendly, scalable, high-performing, and cost-efficient app infrastructure components and mobile tools that enable Nubank engineers to quickly and safely test, deploy, monitor, analyze, and improve app flows and features.
App Core is at the heart of the Nubank app’s foundation, powering app performance, infrastructure scalability, and the removal of legacy dependencies to allow our application to grow from millions to potentially billions of fanatic customers.
The Opportunity
This role will involve working across a variety of technologies, including Native, Flutter, and related frameworks. We are looking for a Mobile Engineer with solid experience to join the App Core team — a cross-impact engineering team responsible for building and maintaining the core infrastructure of the mobile application, optimizing our performance, and enabling product teams to deliver high-quality mobile experiences.
What We’re Looking For
Must Have:
- Proven experience in senior-level technical mobile development.
- Strong technical background with Flutter and/or native mobile development (Android/iOS).
- Solid understanding of mobile software engineering principles, architectural patterns, and modularization strategies.
- Experience with performance optimization, dependency injection, and migration of core systems.
- Knowledge of mobile observability, monitoring, and debugging tools.
- Strong communication skills in English, with the ability to explain complex concepts to diverse audiences.
- Track record of delivering results in ambiguous, fast-paced environments.
Nice to Have:
- Experience with backend technologies, especially those integrated with mobile applications.
- Familiarity with distributed systems and large-scale app architecture.
- Contributions to internal SDKs, libraries, or mobile design systems.
- Understanding of user authentication, session management, and app state handling.
Why Join Us
- Impact at Scale: Help shape the mobile experience for millions of customers across multiple countries, with the goal of reaching billions.
- Technical Leadership: Influence the architecture and foundational technologies that all Nubank engineers rely on.
- Innovation-Driven Culture: Work in a dynamic, collaborative environment that values experimentation, continuous improvement, and engineering excellence.
- Career Growth: Develop as a strategic engineering, working on complex technical and organizational challenges.
Our Benefits
- Chance of earning equity at Nubank
- Food/ Meal Card (Vale-Refeição and/or Vale Alimentação)
- Public Transportation Commuting Benefit (Vale-Transporte)
- NuCare – Psychological, Financial and Legal Assistance Program
- Life Insurance
- Medical Plan
- Dental Plan
- NuLanguage – Language Course Program
- Nucleo - Our learning platform of courses
- Extended Parental Leave
- Daycare Allowance
- Parental Consultancy
- Work-from-home Allowance
- Gym Partnerships
- 30 days of paid vacation
- Relocation Assistance Package, if applicable
Work Model for this Role
Hybrid 2-3 times/week: Our hybrid work model brings us to the office at least twice a week, on strategic days designed to maximize team connection and collaboration. For more details, visit https://building.nubank.com/nu-hybrid-work-model/
Ready to apply?
Apply to Nubank
This opportunity is focused on building our Talent Pool for future roles. Please note that our follow-up may take some time, and we appreciate your patience and interest.
WANTED - thinkers, builders, and dreamers
For over 15 years, ArcTouch has created lovable apps, websites, and connected experiences for world-class companies, leading brands, and innovative startups. See some of our work.
Since launching our first app in 2009, we’ve followed these core beliefs:
- Create lovable products, the perfect blend of something useful and delightful that forges meaningful connections with users.
- Be a lovable company, where amazing teams of diverse individuals collaborate every day to create something we can be proud of.
ArcTouch is a specialty studio that is part of the award-winning AKQA Group.
If you're passionate about building lovable products, we want you to join us!
Know the Flutter Team
Excuse me, do you have a minute to hear the Flutter word? Just be aware: we might spend more than a minute. That's how our team feels, and we're really excited about this previously known Sky framework, where literally "the sky's the limit". We've been on the vanguard of Flutter, living dangerously on the main branch, exploring and contributing to the community's growth. And, of course, building beautiful and smooth apps for our world-class clients. We provide custom and breathtaking experiences for our clients, running on any platform they want: phones, websites, computers, cars (yes, we said cars), etc. So it's pretty much anywhere. At the end of the day, if we could summarize our goal, it would be: To help our clients flutter their wings across the sky, turning them into heroes.
Role Expectations
- Build awesome apps for any platform out there, not only for Android and iOS, but also for the Web and Desktop.
- Engage in English meetings with our clients, helping them identify better approaches and solutions, and sharing technical arguments on complex conversations to negotiate and estimate deadline.
- Write code that is maintainable, performant, and well-designed to offer the best experience to our clients.
- Advocate for Object-Oriented Programming, S.O.L.I.D., and CLEAN concepts, whether inside of projects or even during our chapter meetings.
- Work as close as possible to the whole team, taking ownership, respecting and trusting your teammates to shape and improve the way we develop our projects.
- Choose and apply Design Patterns that best fit your tasks.
- Prefer reactive and functional solutions while also respecting the frameworks' design.
- Be as effective as Dart, either using a linter or the good ol' documentation, ensuring that the best practices and project conventions are being followed.
- Create and integrate network layers with RESTful or gRPC APIs, identifying the best way to communicate with backend solutions.
- Prioritize attention to detail and design guidelines, questioning when it could be simpler or when platform guidelines could be better respected.
- Always consider responsiveness, keeping in mind we build apps for multiple devices and platforms, with a wide range of screen sizes.
- Advocate for animations, leveraging all the potential of Flutter.
- To be Stateful or not to be (Stateless), that's a question you know the answer.
- Manage the application's state, whether using libraries or creating your own architecture, so all the business logic is isolated.
- Lift the state up! As a result, Dependency Injection is part of your day-to-day routine.
- Be open to working on some native code because, at some point, you will need to use a platform channel.
- Know your way around asynchronous coding, calling APIs, or even creating isolates.
- Understand how Flutter paints the screen, aiming to get the best performance possible for a complex UI/UX.
- Write tests! Unit tests, widget tests, integration tests. Regardless of which, we make a point of writing high-quality testable code.
- Be part of the internal and external community, spread the word, and share your knowledge with others.
- Help our team grow strong and keep its core values.
On a typical day with us, you will
- Manage your code with Git-based technologies, from the branches you work all the way up to CI/CD, keeping everything as organized as possible.
- Provide and receive feedback on code reviews, always looking for ways to improve code quality, maintainability, and readability.
- Manage your work in small increments, always giving visibility of your progress through a project management software (Jira, for example).
- Participate in Agile ceremonies with your team and clients, whether they are next to you or on the other side of the world.
Benefits
- Health, dental and life insurances.
- Mental Health Program: monthly therapy sessions and regular mental health talks.
- Meal allowance.
- Wellhub partnership.
- SESC partnership.
- Extended maternity, paternity and adopting leaves.
- Flexible benefits: choose the ones that best fits your current needs - wellness, courses, events, child care and much more!
- Flexible hours.
REMOTE WORK: This position is remote-friendly. If you miss being in the office, we have a great one in Florianópolis and you are welcome to work from there whenever you wish. Just a reminder: remote employees must live in Brazil (we hire international professionals only for specific openings).
Why work for us? Simple: We love what we do.
Make sure to check out our employee reviews on Glassdoor to find out why they love working for ArcTouch.
ArcTouch is an Equal Opportunity Employer (EOE). Applicants are considered for employment without regard to age, race, color, religion, sex, national origin, sexual orientation, gender identity and gender expression, disability or veteran status.
Come join us!
Ready to apply?
Apply to ArcTouch
Principal Engineer, Mobile Platforms
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Principal Engineer, Mobile Platforms
The Opportunity:
This position is for an Engineer Principal (IC9) to join the Mobile Platforms BU.
Mobile Platforms is the BU responsible for Nubank’s entire mobile foundation: we design, build, and operate the platforms that power the Nubank app across all markets. The BU is organized in three business areas – App Foundations (core architecture, app startup, developer experience), App Enablement (navigation performance, Backend Driven Content/BDC, design system infra & Rosetta), and App Release (CI/CD, release train, observability, app analytics & data). Together, these areas provide the canonical Flutter + BDC architecture, tooling, and guardrails that enable product teams to ship a fast, reliable, and consistent app at global scale.
About Nubank's Engineering Culture:
We believe in small, independent teams, a process-light environment, and a culture of trust and collaboration. We made a strategic bet on Flutter and Server-Driven UI not just for technical reasons, but because they empower our engineers to work end-to-end and scale our organization. You will be a key steward and champion of this culture, driving technical decisions that reinforce our principles of autonomy and developer empowerment.
What we have to offer:
- The opportunity to lead the technical direction of Nubank’s Mobile Platform – the foundational system that underpins the Nubank app for tens of millions of customers across all markets.
- Ownership of multi‑year, high‑visibility initiatives such as Mobile Destination Architecture, native code deprecation, app startup refactor, navigation performance, BDC evolution and App Excellence, with clear impact on company OKRs.
- A uniquely cross‑cutting scope across App Foundations, App Enablement and App Release – spanning architecture, developer experience, CI/CD, observability and data – allowing you to shape how the entire engineering org builds mobile products.
- Space to grow your principal‑level leadership: driving strategy, defining technical roadmaps, sponsoring other senior/principal engineers, and representing Mobile Platforms in cross‑company forums and executive discussions.
- A highly collaborative environment with top mobile, platform and experience design talent, where you will partner closely with Magic App, NuDS, Growth and markets teams to deliver a world‑class, consistent and high‑performance app.
Core Qualifications (What We're Looking For)
- 15+ years of software engineering experience, with a proven track record of designing, building, and operating large-scale mobile applications or platforms at an enterprise level.
- Has deep expertise in mobile architecture (Flutter/Dart, native bridges, modularization, mono-repo architectures) and can design end‑to‑end solutions spanning app startup, navigation, state management, and release lifecycle.
- Understands and can evolve BDC (Backend Driven Content) as Nubank’s main server‑driven UI platform, defining how BDC, Flutter and NuDS work together to enable safe, fast iteration without depending on store releases.
- Is capable of setting the technical vision for the three Mobile Platforms business areas (App Foundations, App Enablement, App Release), connecting architecture choices with company‑level goals such as App Excellence, Magic App and Destination Architecture.
- Has a strong track record of leading large, ambiguous cross‑org initiatives – e.g., native‑to‑Flutter/BDC migrations, app startup refactors, navigation performance programs, or observability/analytics redesigns – influencing dozens of squads and multiple BUs.
- Drives platform engineering at scale: defines canonical patterns, RFCs and reference implementations; creates reusable tools/libraries; and ensures that internal customers can adopt the platform with low friction and high quality.
- Is comfortable leading through influence: aligning PMs, EMs, Staff/Principal engineers and leadership on trade‑offs (performance vs. flexibility, platform vs. product), and making tough calls grounded in data, risk and long‑term sustainability.
- Invests heavily in technical leadership and mentorship, raising the bar for senior engineers across Mobile Platforms and product BUs, and building a strong culture around architecture reviews, design docs, and post‑incident learning.
- Cares deeply about observability, reliability and release health for mobile: tying together app metrics (startup, TTFD, crashes, jank), CI/CD, feature rollout (BDC + app releases) and on‑call practices into a coherent strategy.
- Is motivated by working on a horizontal, high‑impact platform that directly shapes how every experience in the Nubank app is built, released and monitored, across Brazil, Mexico, Colombia and future markets.
If you feel interested in these challenges and want to work on a very engaged and talented team, this is the place for you!
Ready to apply?
Apply to Nubank