RemoteB2B
React NativeTypeScriptiOSAndroidREST APIsExpoJest

About us

At Syntelise, we build technology that truly matters.

We design and deliver digital products, data-driven systems and custom software that solve real business problems — not just ship features. Our teams combine engineering excellence with product thinking to create solutions that scale, last and make an impact.

We work in small, autonomous squads where developers have real influence on architecture, technology choices and product direction.

If you like ownership, clean code and meaningful projects — you'll feel at home here.

This job is all about:

  • building and maintaining cross-platform mobile apps using React Native
  • delivering smooth, high-performance experiences on iOS and Android
  • translating product requirements and designs into clean, scalable code
  • integrating apps with APIs and backend services
  • shaping architecture and technical decisions for mobile solutions
  • optimizing performance, stability, and app responsiveness
  • collaborating closely with backend developers, designers, and product manager
  • participating in code reviews and continuously improving engineering standards
  • taking ownership of features from idea to release

What we're looking for

Must have

  • 3+ years of experience in mobile or frontend development
  • commercial experience with React Native
  • strong knowledge of JavaScript (ES6+) and TypeScript
  • experience integrating REST APIs
  • understanding of mobile app architecture and best practices
  • experience publishing apps to App Store / Google Play
  • Git and collaborative development workflow
  • good English communication skills (B2+)

Nice to have

  • native iOS (Swift) or Android (Kotlin) knowledge
  • Expo ecosystem experience
  • state management tools (Redux, Zustand, React Query, etc.)
  • automated testing (Jest, Detox or similar)
  • CI/CD for mobile apps
  • experience with performance optimization
  • familiarity with UX/UI principles

Mindset

  • ownership and accountability
  • product thinking, not just task execution
  • attention to detail and user experience
  • proactive problem-solving
  • team player, not a solo hero

What we're offering

meaningful, non-enterprise-bureaucracy projects
real impact on architecture and technical decisions
small, experienced team (no micromanagement)
flexible working hours
100% remote work
B2B contract
competitive salary
supportive, low-ego culture

Join our team

Information on processing of personal data:
The controller of your personal data is Syntelise Damian Sibiński, with its registered office in Warsaw (02-495), at ul. Herbu Oksza 21/76 (hereinafter: "Syntelise"). Syntelise can be contacted via email at join@syntelise.com or by phone at +48 725 321 400. Your data will be processed for purposes related to your participation in the recruitment process. More information regarding the processing details, including your rights, can be found here.

Consent for future recruitments:
By submitting, you consent to Syntelise processing your personal data contained in the recruitment application for future recruitment processes. You have the right to withdraw your consent at any time. Withdrawal of consent does not affect the lawfulness of processing carried out before its withdrawal.