Test Engineer Jobs in Rio de Janeiro.
All active Test Engineer roles based in Rio de Janeiro.
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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 Mobile - exclusiva para Pessoas com Deficiência
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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 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
Lead IT Engineer - Productivity Systems
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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 the Role
We are looking for an experienced engineer who thrives on solving "meta-problems"—fixing the tools and processes that other teams rely on. You will be responsible for designing and implementing high-leverage automation, managing enterprise tool rollouts (e.g., Postman, n8n), and defining the technical governance for our next-generation AI workflows.
Key Responsibilities
- Enterprise Automation & Platform Engineering:
- Lead the implementation and maintenance of automation platforms (e.g., n8n) to orchestrate workflows across business units.
- Design and optimize critical communication infrastructure (e.g., AWS SES, email delivery resilience) to ensure high availability for internal and transactional messaging.
- AI & "Vibe Coding" Governance:
- Drive the technical strategy for AI adoption within engineering workflows.
- Develop governance frameworks to ensure safe, compliant, and effective use of AI coding assistants and agents.
- Build "Minimum Control Platforms" that balance developer freedom with security and operational risk requirements.
- Internal Tooling Standards:
- Define and enforce usage standards for developer tools (e.g., Postman for API lifecycle), ensuring consistency across squads.
- Conduct "Discovery Design" for new internal products, ensuring they are inclusive and scalable across different technical frameworks.
- Cross-Functional Technical Leadership:
- Act as a technical reference for the domain, influencing architectural decisions beyond the immediate team. Mentor senior engineers and partner with stakeholders (ITSec, Privacy) to align technical solutions with company policies.
What are we looking for?
Technical Skills
-
Solid Software Engineering Background: Proficiency in modern programming languages (Clojure, Java, or Python preferred) and distributed systems.
-
Infrastructure & Cloud: Strong hands-on experience with AWS (specifically services like SES, Lambda, IAM) and Infrastructure-as-Code (Terraform/CloudFormation).
-
Automation Mindset: Experience with workflow automation tools (n8n, Zapier, or custom orchestration engines) and API integration.
-
AI/LLM Familiarity: Interest or experience in integrating LLMs/AI agents into developer workflows (e.g., Cursor, Copilot, internal AI agents).
- Advanced English
Behavioral & Strategic Skills
- Governance-Aware: You understand that "efficiency" must be balanced with "security." You can design systems that are safe by default without destroying developer velocity.
- Problem Solver: You are comfortable debugging opaque infrastructure issues (like email deliverability drops) one day and writing a strategic policy document the next.
- Multiplier: You enjoy documenting your work, creating "Golden Paths" for other engineers, and teaching others how to use the tools you build.
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
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
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
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 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
Staff 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 the role
Our Engineering team helps Nubank to create and use the technology that provides us to build the best financial products. We strive for state-of-the-art software development practices that currently include a variety of technologies. While we value candidates that are familiar with them, we are also confident that software engineers who are interested in joining Nubank will be able to learn from our team. The software engineer is focused on software development with Clojure as the main programming language (We will teach you Clojure). Main responsibilities:
- Horizontally scalable microservices written mostly in Clojure, using Finagle and leveraging upon functional programming techniques and hexagonal architecture
- High throughput jobs and inter-service communication using Kafka
- Continuous Integration and Deployment into AWS
- Storing data in Datomic and DynamoDB
- Monitoring and observability with Prometheus
- Running as much as possible in Kubernetes
We are a process-light organization that values human interactions. We value working in small, independent teams that feel like small startups within the company, and eschew coupling and centralizing where realistic. We understand that execution is the key to success and optimize processes to remove bottlenecks.
You will be responsible for
- Work with large scale distributed systems, understanding their broad architecture
- Set technical direction for multiple teams, ensuring alignment with Business Areas and architecture strategies
- Drive pragmatic innovation while ensuring resilient and flexible solutions that scale across products and geographies
- Mentor engineers across teams, establishing and maintaining a high technical bar organization-wide
- Write, test, instrument, document, and maintain code. Able to pair and participate in code reviews to contribute to the growth of others in and around the team
- Collaborate closely with Product, Design, and Engineering leaders to build new experiences
- Ensure comprehensive observability, performance monitoring, and error handling across team services
- Participate in on-call rotations for your team and respond to incidents as necessary
- Work focused on backend applications, and be open to contribute to mobile and frontend development, according to business needs
We are looking for a person who has
- At least 10 years of experience developing digital products in complex environments
- Deep expertise in distributed systems, microservices architecture, and cloud technologies
- Proven track record of designing and delivering large-scale systems that serve thousands (or even millions) of users
- Strong background in object-oriented or functional programming languages, with ability to work across multiple languages
- Demonstrated ability to lead technical initiatives across multiple teams without direct authority
- Experience mentoring senior engineers and raising the technical bar across organizations
- Practical knowledge of agile software development methodologies and previous experience with CI/CD
- Good communication skills to prevent risks and explain trade-offs clearly to both technical and non-technical stakeholders
- Advanced English skills
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