N-iX is looking for a Senior React Native Engineer to join our tight-knit, 6-person Mobile Engineering Team. 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.
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.
Requirments:
- 5+ years of proven senior-level experience in building, developing, and scaling React Native applications in a production environment.
- Solid background in mobile application development, understanding platform-specific nuances across iOS and/or Android.
- 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.
- English level - upper-intermediate
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.
We offer*:
- Flexible working format - remote, office-based or flexible
- A competitive salary and good compensation package
- Personalized career growth
- Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
- Active tech communities with regular knowledge sharing
- Education reimbursement
- Memorable anniversary presents
- Corporate events and team buildings
- Other location-specific benefits
*not applicable for freelancers
Skills Required
- 5+ years of senior-level experience building, developing, and scaling production React Native applications
- Mobile application development experience with platform-specific knowledge across iOS and/or Android
- Deep TypeScript expertise, including strict configurations in large shared codebases
- Experience with React Native architecture, native modules, Fabric, TurboModules, Hermes, and the New Architecture
- Experience with React Query version 4 or 5 for data fetching and cache management
- Upper-intermediate English proficiency
- Experience with Jest and React Native Testing Library
- Experience with monorepos and internal packages, such as Lerna, Nx, or npm Workspaces
- Experience in FinTech, trading platforms, or high-throughput real-time systems
What We Do
N-iX is a global software solutions and engineering services company that helps world’s leading organizations turn challenges into lasting business value, operational efficiency, and revenue growth using advanced technology. Whether you need to build a custom solution, modernize your digital product or acquire extra tech expertise - we have the experience and capabilities to ensure your success. With over 2,000 professionals in 25 countries across Europe and the Americas, N-iX offers expert solutions in cloud, data analytics, embedded software, IoT, AI, machine learning, and other tech domains. Being in business for over two decades, we have worked with dozens of industry-leading enterprises and Fortune 500 companies creating value across a wide variety of sectors, including finance, manufacturing, supply chain, retail, e-commerce, healthcare, and more. Our unique combination of business domain expertise and technical know-how enables us to effectively collaborate with ISVs, tech companies, and enterprises of all sizes. Thanks to the strong tech ecosystem and partnerships with AWS, GCP, Microsoft, SAP, OpenText, Snowflake, and others, we bring extra speed, scale and efficiency to more than 160 organizations across the globe. N-iX is recognized by numerous industry awards, such as CRN Solution Provider 500, Global Outsourcing 100 by IAOP, ISG Provider Lens™, Modern Application Development services providers by Forrester, etc
