Full Stack Engineer

Full-Stack Engineer – Gaming Applications

📍 Athens, Greece (Hybrid – flexible 2/3 or 3/2 office/home split)

💼 4–7 years' experience

💰 Salary: €40,000 – €60,000 Gross Annually (14 salaries)

Our client, an international organisation operating within the online gaming sector, is seeking an experienced Full-Stack Engineer to help deliver a suite of bespoke gaming products. This is a hands-on role focused on building reliable, transactional applications from concept through to production.

Key Responsibilities

• Develop backend game logic, maths engine integrations, bet placement and settlement flows, and game state management.
• Build end-to-end solutions including REST APIs, databases, background processing services, and front-end interfaces.
• Design responsive player-facing applications and internal admin tools.
• Integrate with Player Account Management (PAM) platforms, including authentication, wallet operations, and settlement processes.
• Ensure transactional integrity through robust handling of retries, reconciliation, rollbacks, and audit trails.
• Design and optimise database schemas for game state, reporting, and transaction history.
• Support deployments, monitoring, logging, and technical documentation.

Requirements

• 5+ years of software development experience delivering production-grade applications.
• Strong experience with Java (Spring Boot) or Python (FastAPI).
• Front-end experience using React and/or Next.js, with working knowledge of TypeScript.
• Expertise in PostgreSQL or MySQL/MariaDB, including schema design and query optimisation.
• Solid understanding of REST APIs, authentication, idempotency, webhooks, and error handling.
• Experience with Git, Docker, CI/CD tools (e.g. Jenkins), and Linux environments.
• Familiarity with AI-assisted coding tools such as Claude Code or Cursor.

Nice to Have

• Experience within online betting, gaming, or gambling environments.
• Background job frameworks such as Celery/Redis or Spring Batch.
• Exposure to AWS, Railway, or Render.
• Experience with PAM integrations, payment systems, or external platform vendors.

What We're Looking For

• Strong ownership and accountability.
• A transactional mindset with a focus on settlement integrity and auditability.
• Excellent communication and collaboration skills.
• The ability to adapt in a fast-paced environment and proactively manage technical risks.