Staff Backend Engineer

Sports Staff Backend Engineer (Performance & Scalability) In Sportsbook we work in a high-volume, real-time environment, integrating data feeds with our modern trading system and transactional betting platform (UI/Backend). Your contributions will cover maintaining/expanding our current Betting/Trading services acting as a hands-on technical consultant and mentor to other engineering teams, helping them solve their toughest performance and scalability challenges. We are recruiting the best Staff Backend Engineer, Performance & Scalability for our Join our team as a Staff Software Engineer, Performance & Scalability position and play a crucial role in driving our organisation's growth through the development of outstanding products. LeoVegas Group is building something special – a world-class team dedicated to creating the best Sportsbook platform in the market through cutting-edge technology and innovative gaming experiences. We’re seeking a dynamic individual who can deliver state-of-the-art code while prioritising performance and scalability. Act as a hands-on technical consultant and mentor to other engineering teams, helping them solve their toughest performance and scalability challenges. Define and drive the adoption of a scalable performance testing strategy and tooling across the organization, enabling teams to own their performance. As a Staff developer you will have a key role in owning delivery plans and aligning the product importance of reducing technical debt and prioritising platform initiatives. Identify obstacles to ensure quality and improve our user experience and how we build our products. Work with product managers, architects, QA engineers, and other developers in a highly collaborative agile environment. Build for scale, availability, performance and security across the stack. 8+ years of software development experience with Java, Spring Boot and Event-Driven Architectures. ~ Demonstrable, hands-on experience in performance analysis, profiling, and tuning of high-throughput, low-latency systems (e.g., garbage collection analysis, asynchronous patterns). ~ Deep expertise in designing and implementing load testing strategies and familiarity with modern tooling. ~ distributed tracing with OpenTelemetry, advanced metrics with Prometheus). ~ Hands-on experience debugging live performance incidents in distributed systems (CPU saturation, GC storms, tail latency explosions, noisy neighbors). ~ Ability to form and validate performance hypotheses under incomplete data, using production-safe techniques. ~ Deep JVM knowledge: allocation profiling, escape analysis, JIT behavior, safepoints, memory layout trade-offs. ~ Experience tuning JVMs for low-latency and high-throughput workloads (heap sizing, region sizing, pause vs throughput trade-offs). ~ Ability to design realistic load models (traffic shape, burstiness, fan-out, data skew) rather than synthetic steady-state tests. ~ Proven track record of making pragmatic trade-offs between performance, complexity, operability, and delivery pressure. ~ Trusted to say no to premature optimization — and yes when it actually matters. Strong understanding of networking and I/O performance: Designs systems where observability is part of the API contract, not an afterthought (semantic metrics, meaningful spans, cardinality discipline). Online gaming and gambling experience. Our culture is our foundation and is what enables us to innovate, build, and lead as we trailblaze our way through the igaming industry. We’re a team of over 1800 innovators, initiators, and groundbreakers working in a fast-paced and agile environment across 16 offices worldwide. Hybrid work policy. ~Our office provides complimentary snacks and drinks; Team and office social events throughout the year. ~ We offer a relocation package with accommodation and flights. we pounce and make it happen As our company working language is English, we’d like to see your CV in English, please. #