Lead Mobile Engineer (Crypto, SV) - IC6 - US - 2026

Nubank; Palo Alto (CA); On-site; USD 180,000 - 260,000; Full time

Benefits offered by this job

Equity

Medical Insurance

Dental and Vision Insurance

Life Insurance

Extended maternity/paternity leaves

Nucleo – Learning platform

NuLanguage – Language learning

NuCare – Mental health program

401K

Saving Plans – HSA/FSA

Work-from-home Allowance

Relocation Assistance

Job summary

Nubank in Palo Alto is seeking a Lead Software Engineer to build customer-facing mobile and full-stack crypto experiences, guiding the architecture and delivery across mobile interfaces and backend services.

You will collaborate with product, design, security, and compliance, mentor engineers, and own end-to-end product flows, from design through production, ensuring security, performance, and reliability.

Qualifications

• Strong experience building and operating production mobile applications, across APIs and backend services.
• Led medium-term engineering initiatives from design to production.
• Strong foundations in client architecture, state management, API contracts, testing, performance, reliability.
• Demonstrated product judgment and simplifying complex workflows for customers.
• Experience designing and operating transactional or security-sensitive features.
• Ability to communicate technical decisions clearly and collaborate with product, design, and engineering.
• Experience mentoring engineers and improving team practices.

Responsibilities

• Lead the design, implementation, launch, and operation of customer-facing mobile and full-stack crypto experiences.
• Own complete product flows across mobile interfaces, APIs, service integrations, data/state management, release readiness, and post-launch health.
• Translate complex concepts like wallets, asset movement, and onchain transactions into clear customer experiences.
• Make independent team-level architecture decisions and communicate tradeoffs across usability, security, performance, reliability, and delivery speed.
• Build resilient transactional experiences with validation, error handling, recovery paths, testing, and observability.
• Coordinate dependencies with backend, platform, security, compliance, product, and design partners to move initiatives to production.
• Mentor engineers and raise the team's standards for mobile architecture, code quality, operational ownership, and customer-centered engineering.

Skills

Mobile app delivery

Backend APIs

Full-stack depth

System design

Mentoring engineers

Security-conscious design

Performance & reliability

Cross-functional collaboration

Job description

About Nu

Nu is the leading digital bank in Latin America, serving 135 million customers across Brazil, Mexico, and Colombia. The company has been leading an industry transformation by leveraging data and proprietary technology to develop innovative products and services. Guided by its mission to fight complexity and empower people, Nu caters to customers' complete financial journey, promoting financial access and advancement with responsible lending and transparency. The company is powered by an efficient and scalable business model that combines low cost to serve with growing returns. Nu's impact has been recognized in multiple awards, including Time 100 Most Influential Companies, Fast Company's Most Innovative Companies, and Forbes World's Best Banks. Visit our Institutional Page

About the Role

Nu is building a new generation of crypto experiences that make sophisticated financial capabilities feel simple and trustworthy. As a Lead Software Engineer on our Palo Alto crypto team, you will build the customer-facing mobile and full-stack experiences that bring Nubank's global crypto offering to life - from the first interaction through the services that power it.

Your scope will be a meaningful product area, not a single screen or an isolated service. You will lead team-level technical design, own delivery across mobile and backend boundaries, and make the tradeoffs required to create intuitive experiences without weakening security, correctness, performance, or reliability.

You will work closely with product, design, backend and platform engineering, security, and compliance partners. This is a hands-on individual-contributor role with responsibility for mentoring engineers, improving team practices, and remaining accountable for production health after launch.

You’ll be responsible for

• Lead the design, implementation, launch, and operation of customer-facing mobile and full-stack crypto experiences.




• Own complete product flows across mobile interfaces, APIs, service integrations, data and state management, release readiness, and post-launch health.




• Translate complex concepts such as wallets, asset movement, and onchain transactions into clear, understandable customer experiences.




• Make independent team-level architecture decisions and communicate tradeoffs across usability, security, performance, reliability, and delivery speed.




• Build resilient transactional experiences with deliberate validation, error handling, recovery paths, testing, and observability.




• Coordinate dependencies with backend, platform, security, compliance, product, and design partners to move initiatives from ambiguity to production.




• Mentor engineers and raise the team's standards for mobile architecture, code quality, operational ownership, and customer-centered engineering.

We are looking for a person who has

Required

• Strong experience building and operating production mobile applications, combined with the ability to work across APIs and backend services, or equivalent full-stack depth with meaningful mobile delivery experience.




• A track record of independently leading a medium-term engineering initiative from technical design through production operation.




• Strong foundations in client architecture, state management, API contracts, testing, performance, and reliability.




• Product judgment and experience simplifying complex or high-stakes workflows for customers.




• Experience designing and operating transactional or security-sensitive product features.




• Ability to communicate technical decisions clearly and collaborate effectively with product, design, and engineering partners.




• Experience mentoring engineers and improving team-level engineering practices.

Nice to have

• Experience building crypto, wallet, digital-asset, or onchain product experiences.

• First-hand familiarity with crypto products and user journeys through professional work, building, or sustained personal use.




• Experience in fintech, payments, banking, or another regulated product environment.




• Depth in one or more native or cross-platform mobile ecosystems.




• Experience delivering products across multiple markets, platforms, or customer contexts.

Location

Palo Alto, United States

Our Benefits

• Opportunity of earning equity at Nu




• Medical Insurance




• Dental and Vision Insurance




• Life Insurance and AD&D




• Extended maternity and paternity leaves




• Nucleo – Our learning platform of courses




• NuLanguage – Our language learning program




• NuCare – Our mental health and wellness assistance program




• 401K




• Saving Plans – Health Saving Account and Flexible Spending Account




• Work-from-home Allowance




• Relocation Assistance Package, if applicable

Work Model

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/

Explore how we build technology at Nubank:

building.nubank.com.br

youtube.com/@building.nubank

Our recruitment process may involve the use of artificial intelligence-enabled tools, such as automated interview transcription and analysis, to support the evaluation process. Artificial intelligence is not used to make final hiring decisions; all decisions are made by human reviewers.