Andres User

I am a backend developer passionate about building high-quality software solutions. While my main focus is on backend development, I also bring experience in frontend development with React, which allows me to contribute throughout the entire application lifecycle.

I consider myself self-taught, proactive, and initiative-driven, and I actively participate in meetings to propose ideas and foster continuous improvement. I apply Clean Code practices to keep solutions scalable, maintainable, and reliable—always aiming to drive innovation and technical excellence.

At Sngular, I continue the development of a large-scale enterprise platform, moving from feature delivery within a single service to designing event-driven, distributed flows across multiple microservices. My main areas include Domain-Driven Design, Kafka-based event-driven architecture with AsyncAPI, and reliability patterns like Outbox and Inbox for at-least-once delivery and idempotent consumption.

In addition, I build cross-service REST clients with caching, fault tolerance, and resilience patterns, develop a notification planner decoupled from transactional flows, and create Spring Batch jobs for synchronization and legacy integrations. I also use tools like Claude Code and OpenCode daily to automate repetitive tasks and codify internal conventions, strengthening our delivery speed and consistency.