Backend Engineer

MANDATORY — hands-on experience with Odds88  
This is the key selection criterion for this role.

The engineer must be able to build the full sports betting system: Odds88 integration, betting logic, and the bonus system around it.

Requirements

Position Name: SeniorBackend Developer (Nest.js, Typescript), Sports Betting
Level: Senior (only)

Hard skills requirements:

• Hands-on experience with Odds88  (MANDATORY, key requirement)
• At least 6 years of software engineering experience
• TypeScript in production: typing API contracts, safe refactors, avoiding any
• Strong PostgreSQL + SQL: joins, aggregates, pagination patterns, indexing implications, transactions and isolation, row-level locks (SELECT … FOR UPDATE), handling double-submit/double-spend scenarios
• Third-party API integration experience — external feeds, webhooks, retries, idempotency, reconciliation
• Modern backend architecture: microservices, asynchronous communication, distributed systems basics (timeouts, retries, idempotency, backpressure)
• Strong software design knowledge: OOD, FP fundamentals, design patterns, maintainable modular code
• Proficient Git (PRs, reviews, branching, conflict resolution), Docker and CI/CD
• Agile / SCRUM development practices