Senior Fullstack Java Developer

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Block Labs is a premier technology studio at the bleeding edge of Web3, Artificial Intelligence, and iGaming. We engineer high‑scale, production‑grade platforms that power the next generation of digital products.

About the Role

You will work on real‑time multiplayer and single‑player gaming platforms. A senior Java engineer who can reason about systems end to end and take ownership of features from design to production.

Key Responsibilities

• Design and implement backend services in Java 17+ using Spring Boot and Maven
• Own critical microservices across authentication, gameplay, chat, and real‑time communication
• Design and maintain REST and WebSocket APIs with a focus on correctness, latency, and resilience
• Collaborate with client engineers to define protocols, state synchronisation, and integration contracts
• Build and maintain integrations with third‑party platforms and cashier systems
• Contribute to data modelling, schema design, and query optimisation
• Debug complex production issues across services, networks, and client behaviour
• Participate actively in code reviews, architectural discussions, and technical decision making
• Ensure scalability, consistency, and reliability across distributed systems

About You

• Strong Java (17+) experience and proven production service ownership
• Deep understanding of distributed systems, state management, and failure modes
• Experience with transactional systems such as payments, wallets, or financial flows
• Comfort designing APIs and communication protocols
• Ability to read and reason about frontend or client‑side code
• Values clarity, simplicity, and correctness over clever abstractions
• Self‑driven ownership and proactive initiative
• Real‑time or multiplayer platform experience is an advantage

Culture & Benefits

Mature, mission‑driven, low‑ego. We value clarity over noise, outcomes over theatrics, and pace without chaos. If you’re one of the smartest minds in your craft and want to build with other experts, you’ll feel at home here.