Staff Mobile Engineer

Overview

Come Make an Impact on Millions of Brazilians

At RecargaPay, we’re on a mission to deliver the best payment experience for Brazilian consumers and small businesses — by building a powerful digital ecosystem where the banked and unbanked connect, and where consumers and merchants have a one-stop shop for all their financial needs.

We serve over 10 million users and process more than USD 4 billion annually. We’ve been profitable since 2022 and operate our own credit business. We are an AI-first, 100% remote team, scaling in the rapidly changing Brazilian financial market.

Our goal? Deliver the best payment experience in Brazil for people and small businesses alike.

We value autonomy, ownership, and a bias for action. We’re looking for people who are curious, hands-on, and driven by impact — who want to solve real problems, work with strong teams, and rethink what’s possible.

If you’re ready to do your best work, at scale, with purpose — this is your place.

Responsibilities

As a Staff Mobile Engineer, you will play a pivotal role in developing and maintaining high-quality mobile applications, with a strong focus on authentication, user onboarding, identity verification (KYC), fraud prevention, and other security-critical features. We are looking for someone who not only delivers excellent code, but also demonstrates critical thinking, initiative, and curiosity — especially when applying modern tools, including AI, to solve complex problems.

You are expected to operate with a high degree of autonomy, take ownership of technical initiatives, and proactively propose improvements. Your decisions will be shaped in close alignment with the broader mobile team and product strategy, ensuring consistency, scalability, and security across our platform.

• Develop and maintain mobile features in React Native, using strongly typed logic with TypeScript.
• Actively use AI-powered tools (e.g., Copilot, ChatGPT) to improve productivity, quality, debugging, testing, and documentation.
• Build and support native modules for Android (Java/Kotlin) and iOS (Objective-C/Swift), including third-party SDK integrations exposed to the React Native layer.
• Lead architecture and decision-making across mobile features related to security, authentication, identity, and regulatory compliance.
• Mentor and support other engineers, fostering a collaborative environment through knowledge sharing, constructive feedback, and clear communication.
• Collaborate closely with backend, product, and design teams to ship high-impact, secure mobile experiences.
• Apply concepts of TDD, BDD, and BFF, and use state management libraries, preferably Redux.
• Debug and monitor applications using tools like Crashlytics, Firebase, Amplitude and New Relic.
• Proactively detect problems, analyze root causes, and propose solutions.
• Implement and maintain advanced mobile security practices including SSL pinning, secure storage, code obfuscation, anti-tampering, and device integrity.

• Academic background in computer science, engineering, or software development disciplines.
• Strong experience developing mobile applications in React Native, and also in native Android/iOS development.
• Demonstrated ability to take ownership of mobile projects from architecture to release.
• Experience solving real-world technical challenges with critical thinking and balanced trade-offs.
• Active interest and practical experience applying AI tools to enhance workflows, problem-solving, and decision-making.
• Familiarity with React Native architectures, Push Notifications, Deeplinks, and Middlewares.
• Solid judgment navigating ambiguity, with the ability to adapt to short-term needs without compromising long-term quality.

Soft Skills

• Critical thinking: capable of understanding the “why” behind problems, identifying root causes, and articulating solutions clearly.
• Initiative & ownership: comfortable identifying opportunities for improvement, taking responsibility for tasks, and driving them to completion without waiting for assignments.
• Strong communication and collaboration skills, with the ability to work closely with cross-functional teams including Chapters, UX and Backend Engineering.
• Pragmatic mindset that balances quality, speed, and business needs effectively.
• Demonstrates alignment with company values through initiative, quality delivery, adaptability, and innovation.

Industry-Specific Knowledge

We value practical experience in user identity and security flows within regulated or trust-sensitive environments, particularly in the context of mobile applications. Candidates should ideally have experience with:

• User authentication mechanisms such as PIN, biometrics (Face ID, fingerprint), and multi-factor authentication.
• Secure onboarding flows that comply with KYC (Know Your Customer) and AML (Anti-Money Laundering) regulations, including identity document verification and selfie-based validation.
• Integration of device fingerprinting SDKs to uniquely identify devices, detect rooted/jailbroken environments, and support risk-based decisions during authentication or account recovery.
• Device integrity checks, secure local storage, and privacy-aware handling of sensitive user information (e.g., encryption at rest, secure keychains, biometric prompts).
• Hands-on involvement with identity verification flows using third-party SDKs, such as those powered by FaceTec, including UX orchestration, session lifecycle, error handling, and fallback strategies.
• Navigating compliance requirements like GDPR, LGPD, or PCI-DSS, and translating them into seamless and secure mobile user experiences.

Process Stages

HR Interview
Our first contact will be a casual conversation to learn about you, your career journey, and align expectations. We’ll conduct a brief technical assessment and answer your questions about the role, our culture, and what makes us unique. We want you to get to know us better too

Assessment (skills mapping)
We use an evaluation tool to map your work style and how you align with our culture. This step helps us understand how your skills can enhance our solutions.

Technical Assessment
Now it’s time to showcase your technical talent In this step, you’ll solve technical cases and have a discussion with our engineering team. We’ll dive into your decisions, strategies, and how you design scalable and robust solutions. Beyond evaluation, we want to exchange ideas and explore how your solutions can impact RecargaPay

Conversation with Leadership
Here, you’ll meet the squad leader to understand the position’s challenges, discuss the team’s daily activities, and evaluate alignment between our goals, culture, and your career aspirations. This will be an open space to align expectations and ensure RecargaPay is a place where you can grow and make a difference.

Offer
If we’ve made it this far together, we’d be thrilled to invite you to join our team You’ll receive a detailed proposal with all the information about the role, benefits, and the impact you’ll have with us. We can’t wait to welcome you

Note: There may be an additional step if specific alignments are needed.

Benefits

• Competitive and market-aligned salary.
• Remote work — wherever you are, you’re part of the team
• Home office allowance through a monthly deposit in the RecargaPay app.
• Health and dental plans with no co-pay.
• Life insurance.
• Flexible meal allowance (via Flash).
• TotalPass membership to take care of your health.
• Spanish or Portuguese classes.

Diversity & Inclusion

At RecargaPay, you’ll have the freedom to be who you are because we believe that diverse perspectives and experiences make us more creative and stronger. Here, everyone is welcome to express themselves authentically. We value the richness of each journey and the multiple ways of seeing the world, without distinctions of gender, race, sexual orientation, age, religion, or any other characteristic that makes us unique.

About the use of your Data

By sharing your resume with us, you authorize the use of your data for analysis during the selection process and possibly for other opportunities within the RecargaPay group. You can request the update or deletion of your information at any time, in accordance with LGPD (General Data Protection Law).

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