Senior React Native Engineer

OANDA Corporation; Kraków; Hybrid; PLN 240,000 - 360,000; Full time

Job summary

OANDA Global Corporation in Krakow is seeking a Senior React Native Engineer to join our tight-knit mobile team. You will work on a production brownfield React Native codebase embedded within native iOS and Android hosts, delivering high-performance trading interfaces with low latency.

The role emphasizes architectural ownership, collaboration with backend, product, and UX, and rigorous testing in an agile hybrid work model.

Qualifications

• Senior-level React Native experience in production.
• Strong TypeScript mastery with large codebases.
• Experience with React Native architecture and native modules.

Responsibilities

• Develop and ship new features for a high-performance React Native codebase embedded within native iOS and Android hosts.
• Drive architecture and code quality, leading proofs-of-concept for new patterns and improving developer experience.
• Design and align RESTful API contracts in close collaboration with backend, product, and UX Design Teams.
• Write reusable, well-tested, and maintainable code across the mobile SDLC.
• Elevate team engineering standards through code reviews, mentorship, and agile participation.
• Own end-to-end delivery from concept to production release within your first three months.

Skills

React Native

TypeScript

Mobile development

RESTful APIs

Code reviews

Tools

Lerna

Nx

npm workspaces

Hermes

Fabric

Job description

Fancy helping to shape the future of FinTech? We have always been innovators. In 1996 we were the first company to share exchange rate information, free of charge on the internet. Today, we are a world leading online trading group. Join us to:

• Help build the future of online trading
• Be part of a culture driven by integrity and global impact
• Become part of an award-winning company - check out our full list of awards here

We are only as good as our people. Luckily, our people are the best. Join us! How do we work? As a Senior React Native Engineer, you will join our tight-knit, 6-person Mobile Engineering Team based primarily in Krakow, working together to build the next generation of OANDA’s trading platform. You will work on a production brownfield React Native codebase embedded within native iOS and Android hosts, managing interconnected internal packages that power high-performance, real-time trading interfaces. In a highly agile setup, you will collaborate closely with the team to deliver a fast, reliable, and fault-tolerant mobile experience where correctness, low latency, and exceptional user experience are paramount. We work in a hybrid model - we'd love to meet you in the office 2 times a week with respect to your own commitments.

In this role, you will:

• Develop and ship new features for a high-performance React Native codebase embedded within native iOS and Android hosts.
• Drive architecture and code quality, leading proofs-of-concept for new patterns, improving developer experience, and ensuring high UI responsiveness for real-time trading.
• Design and align RESTful API contracts in close collaboration with backend, product, and UX Design Teams.
• Write reusable, well-tested, and maintainable code, taking full ownership across all stages of the mobile software development lifecycle.
• Elevate team engineering standards through thorough code reviews, technical mentorship, and active participation in agile planning sessions.
• Own end-to-end delivery, taking features from concept to production release within your first three months while contributing to overall application architecture.

What skillset do you need to be successful in this role?

• Solid background in mobile application development, understanding platform-specific nuances across iOS and/or Android.
• Proven senior-level experience building and scaling React Native applications in a production environment.
• Deep TypeScript mastery, with strong experience navigating strict configurations across large, shared codebases.
• Hands-on experience in building and optimizing React Native architecture (including native modules, Fabric, TurboModules, Hermes, and the New Architecture).
• Solid data-fetching and cache-management skills using React Query (v4/v5) to ensure consistent server state across screens.
• A forward-thinking mindset and enthusiasm for modern tools, including a practical, open approach to leveraging AI-assisted development tools to boost productivity.

Nice to have:

• Strict testing discipline (Jest, React Native Testing Library) as an integrated part of your development workflow.
• Hands-on experience with monorepos and internal packages (e.g., Lerna, Nx, npm workspaces).
• Experience in FinTech, trading platforms, or high-throughput real-time systems.

At OANDA, to help us efficiently process applications, we use AI-driven tools to help source and rank candidates based on professional experience and skills. While these tools provide recommendations, our recruitment process remains human-centric: all final shortlisting and hiring decisions are made by OANDA team. You have the right to request a human review of your application.

OANDA Global Corporation is a diverse and global team with offices around the world. We value the unique skills and experiences each individual brings to OANDA. We are committed to creating and sustaining a collegial work environment in which all individuals are treated with dignity and respect and one which reflects the diversity of the community in which we operate. We provide an inclusive and accessible environment for everyone.

Candidates selected for an interview will be contacted directly. If you require accommodation during the recruitment and selection process, please let us know. We will work with you to provide as seamless a recruitment experience as possible.

Learn more about our culture here.

Review OANDA Privacy Policy and learn more about how we treat your personal data and protect your privacy.

Make your first step toward a positive change in your career with OANDA

OANDA aims to transform all aspects of how the world interacts with currencies, whether that be trading or utilizing currency data and information. We’ll do this our way - connecting and collaborating with the best and most innovative to grow quickly and globally. We strive to do more than just our jobs, focus our actions on collective goals and dare to seek out innovation and creativity. All this to continue our obsession with providing the best experience for our customers. Innovation has been at the heart of everything we do! From our roots in 1997 providing free currency exchange information over the internet to launching an award-winning global trading business. We work together to drive the future of currency data solutions and trading technology. Our customers can invest in around 200 financial instruments including currencies, shares (over 1300) and commodities leveraging intelligent support and the newest technologies. What is more, we are now offering a batch of popular cryptocurrencies in the US! OANDA is now a major global player. We are proud to be recognized! We put our clients at the heart of our innovation and services, which has earned us some of the most recognized awards in the industry. Most Trusted Broker, Compare Forex Brokers’ Awards, 2025 Best in Class for Mobile Trading Apps, ForexBrokers.com Annual Awards, 2025 Best Forex/CFD Broker in AMER, TradingView Broker Awards, 2024 Broker of the Year 2023, TradingView Broker Awards, 2023