Full Stack Developer - Vilnius

About the role

EC Markets is an FCA-regulated FX and CFD brokerage whose engineering team builds and runs its trading app: a React Native / Expo app on iOS, Android and web, backed by a Java Spring Boot API on AWS. It is looking for a Full Stack Developer to build features end to end across the mobile app and core API, taking work from refinement to production in short sprints and integrating with trading, custody and payments platforms. The role is permanent, full-time and on-site in Vilnius, reporting to the Head of Technology.

Key responsibilities

• Build features end to end: React Native / Expo screens on iOS, Android and web, the Spring Boot API endpoints and the integrations they depend on.
• Take work from refinement through code review and testing to production release, and take part in Scrum ceremonies.
• Integrate with third-party platforms for trading, custody, identity verification, payments, notifications and market data, handling failures with retries, idempotency, webhook verification and clear error states.
• Write unit and integration tests and support QA with mobile UI and API automation.
• Keep the app fast on older devices and correct on every screen size, and investigate production issues using monitoring and error-tracking tools.
• Build securely, with authentication, secrets handling and data privacy aligned with FCA and GDPR requirements.
• Use AI coding tools confidently, reviewing and explaining every AI-assisted change in a pull request.

Required profile

• At least 4 years of professional software engineering experience across front end and back end.
• Degree in Computer Science, Software Engineering or a related field, or equivalent professional experience.
• Production experience with React Native and TypeScript; Expo is a plus.
• Experience releasing mobile apps through the App Store and Google Play.
• Professional English for daily work with colleagues across the Group.

Required skills

• Java with Spring Boot (REST APIs, Maven)
• Solid SQL and relational databases (PostgreSQL preferred)
• Integration of third-party REST APIs and webhooks in production
• Git workflow with pull-request reviews and CI/CD
• Nice to have: AWS, WebSockets, charting and caching, test automation tools such as Maestro, Detox or REST Assured

What we offer

• Base salary of EUR 38,400 - 57,600 gross per year, plus eligibility for the Group bonus scheme.
• Pension and social security contributions in line with statutory requirements, and supplementary health insurance.
• 20 working days annual leave plus public holidays.
• Company-provided hardware and an annual learning and certification budget.
• Occasional travel to other Group offices, paid by the company.