About the role

Own a service end to end its API contracts, data model, integration patterns, performance, security posture and behaviour in production. Roughly 70% backend and 30% frontend in React. You will work independently, contribute to architectural decisions, mentor one engineer, carry on-call, and act as the technical point of contact for your service with enterprise client stakeholders.

What you will do
Own API contracts and service boundaries versioning, idempotency, backward compatibility.
Own the data model: schema design, indexing strategy, query performance and zero downtime migrations.
Design integration patterns between services, including asynchronous messaging where appropriate.
Own caching with a real invalidation approach, and service performance N+1 removal, slow-query tuning, latency percentiles.
Own security (object-level authorisation, validation, secrets, dependency risk) and observability (structured logs, metrics, traces, actionable alerts).
Carry on-call,



debug production incidents across service boundaries and author the root cause analysis.
Own the test strategy and contribute to CI/CD, release strategy and rollback safety.
Mentor one engineer, review pull requests, and explain architecture and delivery risk to clients.

What we are looking for
3+ years of backend experience with Node.js and TypeScript in production.
Solid NestJS or equivalent modules, dependency injection, guards, interceptors, pipes, exception filters.
Demonstrated ownership of API and service design, including versioning and idempotency.
Deep PostgreSQL: schema design, EXPLAIN plans, index strategy, transactions, secure migrations. Working MongoDB experience.
Production Redis or equivalent caching, with an invalidation strategy. Production asynchronous messaging (Kafka or RabbitMQ) consumer groups, ordering, retries, dead-letter handling.
Practical ownership of security (OWASP Top 10, authorisation models, secrets) and observability (logg

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