May 11, 2026
Senior React Native Engineer
Senior • Hybrid
7,000 - 7,500 USD
Warsaw, Poland
On behalf of American FinTech company, SD Solutions is looking for a talented Senior React Native Engineer.
As a Frontend Engineer, you will take ownership of a strategic, gamified platform that serves as the primary engagement and social hub for tens of thousands of American FinTech company associates. You will develop new features for our mobile app, shaping a unique user experience that blends high-stakes business logic with interactive gaming, social networking, and professional training. In this role, you will build the next generation of communication and reward tools that connect our massive user base at the point of sale, directly impacting NDA, Fintech growth, and market exposure.
SD Solutions is a staffing company operating globally. Contact us to get more details about the benefits we offer.
Responsibilities:
Develop and maintain the customer-facing native application.
Take ownership of the end-to-end development of new Sunbeast features, from concept to deployment.
Collaborate closely with backend engineers to integrate APIs and deliver a seamless, high-performance user experience.
Write clean, efficient, and maintainable code, adhering to best practices and team standards.
Contribute to a collaborative environment, sharing your expertise and mentoring other team members.
Requirements:
5+ years of frontend/mobile development experience.
Strong production experience with React Native (must-have—including app lifecycle and deployment to stores).
Deep knowledge of JavaScript, TypeScript, and CSS.
Experience publishing/maintaining apps in Google Play and the App Store.
End-to-end ownership mindset—proactive, resourceful, self-motivated
Resourceful, self-motivated, and capable of working independently in a fast-paced environment.
B.Sc. in Computer Science or equivalent.
Fluent in English (daily collaboration with the Israel team).
Preferred Experience:
Experience with React.
Familiarity with backend development (Java or Kotlin) is an advantage.
Experience with end-to-end testing frameworks like Playwright.
Knowledge of WebSockets.
Prior experience in a fintech company, especially with payment processing or financial services.
Experience with AI development tools like Cursor and Claude Code
About the company:
American FinTech company, builds financial technology for real life. Our technology eases the stress of paying for life’s expenses by giving people more options on how and when they pay. Founded in 2016, American FinTech company offers a next-generation, no-fee credit card that can be managed through a powerful mobile app, as well as a point-of-sale payment option available at more than 25,000 service locations, including auto dealership service centers, optical practices, dentist offices, veterinary clinics, and specialty healthcare services
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Hybrid
Aarhus, Denmark
🏢 Summary: Senior React Native Developer role focused on building a mobile app from scratch within an existing monorepo platform. The position involves end-to-end feature delivery, translating Figma designs into production-ready solutions, and driving technical decisions in a small, high-performing team. The developer will ensure maintainable, scalable solutions aligned with long-term platform strategy. 🗂️ Requirements: 6+ years Frontend Development experience, Strong React Native experience, Solid React experience, Experience delivering production-ready applications, Ability to work within large monorepo codebases, Experience with collaborative development workflows, Ability to understand complex architectures, Active usage of AI development tools, Fluent English 📃 Skills: React, ReactNative, JavaScript, TypeScript, Monorepo, Turborepo, Expo, Tailwind, Figma, AI 🏢 Description: emagine is looking for a Senior React Native Developer for one of our partners. Background The app will be developed on top of their existing monorepo platform, enabling them to take greater ownership of their technical platform and accelerate future development across teams. The Role We are looking for a Senior Frontend Developer with strong React Native experience to join a small, high-performing team (currently 2 developers). You will play a key role in building the app from the ground up, translating designs into high-quality features and ensuring they are ready for go-live. While you will not hold a formal Lead role, you will act as a core contributor and technical driver within the team. Main Responsibilities • Take ownership of delivering features end-to-end, including complex functionality • Collaborate closely with designers and developers to ensure high-quality UX implementation from Figma • Contribute actively in refinements, sprint planning, and daily standups • Drive technical discussions and sparring on complex problems • Quickly understand and navigate a large existing codebase (monorepo) • Ensure solutions align with long-term maintainability and platform strategy • Collaborate across teams working within the monorepo Key Requirements • 6+ years of experience in Frontend Development • Strong experience with React Native (mobile app development) • Solid experience with React (web) • Proven track record of delivering production-ready applications • Experience working in collaborative environments with developers and stakeholders • Ability to quickly understand complex systems and architecture • Actively using AI tools to improve development workflows • Fluent in English (written and spoken) Nice to Have • Experience working in a monorepo setup (e.g. Turborepo) • Familiarity with Tailwind CSS • Experience working with Figma handovers • Experience with Expo for React Native apps Other Details The ideal candidate is a fast learner who can ramp up quickly in new domains, takes ownership and proactively drives tasks forward, thrives in a high-paced environment, communicates clearly, and collaborates naturally across teams. You will work comfortably in a small team with a high impact, understanding that much of your success depends on cross-team collaboration and alignment within the monorepo ecosystem. Start: ASAP Duration: 3 months Work load: Full time Location: Aarhus - minimum 3 days/week