POSITION SUMMARY

As a Staff Engineer at EarnIn, all systems you work on are business-critical to our success.  We manage systems that provide real-time and scheduled money transfers, facilitating the ability to track outcomes, reconcile discrepancies, and respond to returns, chargebacks, and other events. We seek experienced, collaborative, and resourceful Staff-level engineers to join our backend teams.  As a Staff Engineer, you will work cross-functionally with various teams and contribute to the design and development of our backend services. 

This position will be hybrid from our Mexico City office as part of our expanding site with two days a week required in office. EarnIn offers excellent employee benefits, including healthcare, internet and cell phone reimbursement, a learning and development stipend, and potential opportunities to travel to our headquarters in Mountain View. Our salary ranges are determined by role, level, and location.

WHAT YOU'LL DO

• Drive the design and implementation of new features. Break down complex problems into their bare essentials, translate this complexity into elegant design, and create high-quality, maintainable code.
• Make a meaningful impact on the lives of our community members.
• Design & deliver robust microservice integrations via REST/gRPC APIs using various communication, consistency, and coordination strategies.
• Collaborate and mentor other senior engineers while providing thoughtful guidance using code, design, and architecture reviews.
• Contribute to defining technical direction, planning the roadmap, escalating issues, and synthesizing feedback to ensure team success.
• Estimate and manage team project timelines and risks
• Care passionately about producing high-quality designs and code
• Participate in hiring and onboarding for new team members.
• Lead cross-team engineering initiatives.

WHAT WE'RE LOOKING FOR 

• 7+ years of development experience, delivering value through software in a collaborative environment. 
• Expertise in trade-off analysis for distributed architectures.
• Proficient in at least one modern programming language and the ability to understand more than one - we currently work in C# and Kotlin.
• Familiarity with the clean architecture approach.
• Experience with various data storage systems, including relational and document databases.
• Excellent written and verbal communication skills.
• Being self-motivated and able to work independently with minimal supervision.
• Bachelor's, Master’s, or PhD degree in computer science, computer engineering, or a related technical discipline or equivalent industry experience

Staff Software Engineer – Mexico City, Mexico (Hybrid)

About Us

Nu is one of the largest digital financial platforms in the world, with more than 127 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 Nu create and scale the technology that powers the best financial products in Latin America. We strive for state-of-the-art software development practices, using a variety of technologies and architectures to build resilient, secure, and highly scalable systems.

As a Staff Software Engineer, you will play a key role in shaping the technical direction of multiple teams, driving the design and evolution of large-scale distributed systems that serve millions of customers. While we value experience with our tech stack, we are confident that engineers who are eager to learn will be successful here — and we will teach you Clojure as our main backend language.

You will build and evolve:

• Horizontally scalable microservices written mostly in Clojure, using Finagle and leveraging functional programming techniques and hexagonal architecture
• High-throughput jobs and inter-service communication using Kafka
• Continuous Integration and Deployment pipelines on AWS
• Data storage solutions using Datomic and DynamoDB
• Monitoring and observability with Prometheus
• Services running as much as possible in Kubernetes

We are a process-light organization that values human interactions. We work in small, independent teams that feel like startups within the company and avoid unnecessary coupling and centralization whenever realistic. We understand that execution is key to success and continuously optimize our processes to remove bottlenecks.

You'll be responsible for

• Working with large-scale distributed systems and understanding their broad architecture and trade-offs
• Setting technical direction for multiple teams, ensuring alignment with Business Areas and architecture strategies
• Driving pragmatic innovation while ensuring resilient, secure, and flexible solutions that scale across products and geographies
• Mentoring engineers across teams and helping maintain a high technical bar organization-wide
• Writing, testing, instrumenting, documenting, and maintaining high-quality code
• Pairing and participating in code reviews to support the growth of others in and around your teams
• Collaborating closely with Product, Design, and Engineering leaders to build new end-to-end experiences
• Ensuring comprehensive observability, performance monitoring, and robust error handling across team services
• Participating in on-call rotations for your team and responding to incidents as necessary
• Focusing primarily on backend applications, while being open to contributing to mobile and frontend development according to business needs

We are looking for a person who has

• At least 8 years of experience developing digital products in complex environments
• Deep expertise in distributed systems, microservices architecture, and cloud technologies
• A proven track record of designing and delivering large-scale systems that serve thousands or millions of users
• A strong background in object-oriented or functional programming languages, with the ability to work across multiple languages
• Demonstrated ability to lead technical initiatives across multiple teams, even without direct authority
• Experience mentoring senior engineers and raising the technical bar across organizations
• Practical knowledge of agile software development methodologies and prior experience with CI/CD
• Strong communication skills to identify and prevent risks, and explain trade-offs clearly to both technical and non-technical stakeholders
• Advanced English skills

Location

Mexico City, Mexico.

Our Benefits

Our benefits are designed to support your wellbeing, development, and life outside of work. For Mexico, they include:

• Chance of earning equity at Nu
• Extended maternity and paternity leaves
• Health and life insurance
• Dental and Vision Insurance
• NuCare – our mental health and wellness assistance program
• Nucleo – our learning platform of courses
• NuLanguage – our language learning program
• Holiday Bonus (“Aguinaldo”) of 30 days of pay per year
• 17 days of paid vacation with 25% vacation bonus
• Gym partnership
• Food card
• Work-from-home Allowance
• Parental Consultancy
• Relocation Assistance Package, if applicable

Even if you feel you don't meet every qualification, we encourage you to apply — your unique skills and experiences may be just what we're looking for, and we're excited to learn more about what you can bring to our team.

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/.