We at Confiz are hiring an PrincipalBackend Engineer with strong expertise in backend technologies, system architecture, and performance optimization. Join our team to design and build scalable, secure, and high-performing backend systems that power exceptional digital experiences for global enterprises..

Responsibilities

• Own microservices in NestJS (TypeScript): define module boundaries, version APIs, and ship resilient, well-tested services.
• Design internal communication: implement REST/gRPC/event-driven patterns (e.g., request/response, pub/sub), handle retries, timeouts, backoff, and circuit breakers.
• Implement secure JWT auth: access/refresh lifecycles, rotation, audience/issuer validation, revocation/blacklisting, and token storage best practices.
• Deliver payment integrations: integrate with gateways (e.g., Stripe/Adyen/Braintree), implement idempotent operations, handle captures/refunds/disputes, and reconcile via signe...