Senior Software Engineer - iGaming

About this role

Our client is a fast growing iGaming company with offices in Europe which is recruiting a Senior Software Engineer The role can be based in Tallinn or be 100% remote with a service agreement (B2B contract). As a Senior Software Engineer, you will design, develop, and maintain scalable, high-performance applications. You will lead architecture discussions, mentor junior engineers, optimise performance, and ensure smooth integrations with third-party services.

You will also take ownership of complex technical challenges and contribute to the platform’s strategic development. Key Responsibilities Design, develop, and maintain scalable, high-performance applications using Elixir and related technologies. Lead discussions on architecture, technical design, and engineering best practices with cross-functional teams. Write clean, maintainable, and well-tested code aligned with internal standards.

Drive performance optimisation to improve scalability and system efficiency. Design and implement integrations with third-party APIs and services. Own troubleshooting and resolution of complex issues across functionality, performance, and reliability. Participate in and support on-call rotations, including incident response. Conduct code reviews and mentor junior engineers to promote engineering best practices. Stay current with relevant technologies and contribute innovative ideas to the team.

Contribute to the design and planning of new features and system improvements. Implement security and data protection best practices. Build and evolve complex domain logic such as rules engines, decision frameworks, and policy systems. Design and maintain high-throughput, real-time or near-real-time data pipelines and enrichment systems. Key Skills & Experience 5+ years of software engineering experience, with exposure to Elixir/Erlang, TypeScript, or similar languages.

Strong understanding of API design best practices. Solid experience with testing methodologies and frameworks. Experience with microservices, event-driven systems, and high-traffic or data-intensive applications. Knowledge of client-side or system performance optimisation. Strong understanding of CI/CD, code standards, and modern engineering practices. Ability to deliver independently while managing multiple priorities.