Senior Backend Developer (Nest.js) with Odds88 intergration expertise

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