Backend Developer (Java) - 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. The company is looking for a Backend Developer to build and strengthen this API, which connects trading, custody, identity verification, payments and market-data platforms. The role is full-time, permanent and on-site in Vilnius, reporting to the Head of Technology.

Key responsibilities

• Design, build and maintain features in Spring Boot services and shared libraries, and strengthen integrations with trading, custody, identity verification, payments, CRM and notification platforms.
• Ensure money movements (deposits, withdrawals and transfers) are correct, auditable and reconcilable in line with client money requirements.
• Own PostgreSQL schema design, migrations and query performance, and instrument services with logging, metrics and tracing.
• Apply secure-by-default practices: authentication, secrets management and least-privilege access.
• Support load testing and remove performance bottlenecks.
• Work in Scrum sprints, take work through code review, testing environments and production release, and use AI coding tools productively, reviewing and explaining every AI-assisted change.

Required profile

• At least 4 years of back-end development in Java (17 or later) with Spring Boot in production.
• Degree in Computer Science, Software Engineering or a related field, or equivalent professional experience.
• 4-7 years of hands-on back-end engineering experience.
• Experience building systems where data correctness is critical, such as payments, ledgers or financial transactions.
• Professional English for daily work with colleagues across the Group.

Required skills

• REST API design and integration patterns: webhooks, retries, idempotency and asynchronous processing.
• Strong SQL and PostgreSQL, including transactions and schema migrations (Flyway, Liquibase or similar).
• Automated testing with JUnit and integration tests.
• Working knowledge of AWS; Git-based workflow with pull-request reviews and CI/CD.
• Nice to have: brokerage, trading, payments or fintech experience, familiarity with FCA client money rules, infrastructure as code (AWS CDK or Terraform), caching, message queues, event-driven design, CRM integration and JavaScript.

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, including cloud and Java certifications.
• Occasional travel to other Group offices, paid by the company.