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Over 15 years designing and delivering enterprise software, modernizing legacy platforms, and building cloud-native applications with Node.js, TypeScript, AWS, and modern engineering practices.
I'm Cristian, a Senior Software Engineer passionate about building scalable backend systems and pragmatic cloud solutions that solve real business problems. I enjoy transforming complex requirements into simple, reliable, and maintainable software while balancing performance, operational costs, and long-term scalability. My engineering approach is guided by pragmatic architecture, clean design, observability, and continuous improvement, always choosing the right solution for the business rather than the most fashionable technology.
Full-stack event-driven platform with a live ops console: a NestJS API and resilient worker over SQS/SNS (DLQ, circuit breaker), observable end to end in a real-time Next.js dashboard.
Reliability and infrastructure-as-code: Circuit Breaker (Opossum), fail-fast config (Zod) and structured logs (Pino), provisioned with Terraform and shipped as multi-stage Docker. Load-tested with k6.
A focused deep-dive into messaging: At-least-once order processing over AWS SNS/SQS with fan-out, fail-fast validation (Zod), and a Dead Letter Queue with automatic redelivery (maxReceiveCount=3).
Resilient APIs, messaging systems, caching strategies, observability, and Cloud-Native architectures optimized for high scale and reliability.
Incremental refactoring, test coverage, CI/CD pipeline implementation, and safe database migrations with Zero Downtime.
High-performance UX for SPAs and SSR: Core Web Vitals optimization, lazy loading strategies, code splitting, asset management, and accessibility (A11y).