# Senior React Native Engineer at N-iX

> Open job at N-iX. Workplace: On-site.

Source: Poland Dev Jobs, https://poland-devjobs.com/jobs/n-ix-senior-react-native-engineer-hm3ytf9
Posted 6 November 2026. Last checked on the employer's career site: 10 November 2026.

## Facts

- Company: [N-iX](https://poland-devjobs.com/companies/n-ix)
- Location: On-site
- Workplace: On-site
- Employment type: Full-time
- Polish: Not required
- English: Business level
- Skills: Android, Jest, React, React Native, TypeScript, iOS
- Not mentioned in the job post: salary, visa sponsorship, relocation, where you can apply from

## Job description

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

## How to apply

Apply on the job page, https://poland-devjobs.com/jobs/n-ix-senior-react-native-engineer-hm3ytf9: its Apply button opens the employer's own application page.

## More jobs from N-iX

- [Engineering Manager](https://poland-devjobs.com/jobs/n-ix-engineering-manager-jgrzm4d): N-iX, On-site. Posted 6 November 2026.
- [DevOps Tech Lead](https://poland-devjobs.com/jobs/n-ix-devops-tech-lead-4p5bp35): N-iX, On-site. Posted 6 November 2026.
- [Senior DevOps Engineer (15:00 - 23:00 CET)](https://poland-devjobs.com/jobs/n-ix-senior-devops-engineer-15-00-23-00-cet-e1eia80): N-iX, Remote (EU). Posted 5 November 2026.
- [Senior/Lead Data Engineer (Databricks)](https://poland-devjobs.com/jobs/n-ix-senior-lead-data-engineer-databricks-28e8hev): N-iX, On-site. Posted 5 November 2026.
- [Senior .NET Full Stack Engineer (with Angular)](https://poland-devjobs.com/jobs/n-ix-senior-net-full-stack-engineer-with-angular-g5bsxh3): N-iX, On-site. Posted 4 November 2026.