Backend Engineer focused on building reliable, API-driven and AI-integrated backend systems for real-world use cases. Experienced in designing backend architectures, integrating external APIs, and developing automation-oriented software with production mindset.
I specialize in backend development with a strong focus on system architecture, API orchestration, and backend-heavy full‑stack systems. I have hands-on experience building AI-powered services and automation workflows from scratch, owning the full lifecycle from design and implementation to deployment and maintenance in Linux-based environments.
Formally trained in full‑stack development, I value clean system design, reliability, and practical solutions that support real business workflows. I’m comfortable adapting to new technologies and continuously expanding my skill set as project requirements evolve.
- Design and build backend services and REST APIs
- Develop AI-integrated systems and automation workflows
- Build backend-heavy full‑stack applications
- Integrate third‑party and internal APIs
- Deploy and maintain production‑oriented backend systems
Languages Python, JavaScript (Node.js / TypeScript), Learning Go
Backend & Infrastructure FastAPI, PostgreSQL, Redis, Docker, Linux (Ubuntu/Debian)
- Built backend systems from scratch with microservice‑oriented architecture
- Implemented AI orchestration using OpenAI APIs for structured automation and decision flows
- Designed and integrated APIs supporting complex business workflows
- Managed deployment, configuration, and runtime behavior of backend services
Backend‑centric AI system designed to automate customer interactions and business workflows. Built with a modular architecture focusing on API orchestration, AI integration, and production‑ready backend design. This project is maintained as a private internal system.
Tooling system to automate software project initiation and documentation workflows. Includes generators for proposals and README files based on standardized templates, along with automated project directory scaffolding to enforce consistent structure and documentation practices.
Repository: https://github.com/alfonsusenrico/documentation-generator
AI‑assisted email management system focusing on intelligent categorization, importance scoring, and notification flood control. Designed with confidence thresholds and user‑in‑the‑loop correction to emphasize real user value over rule‑based filtering.
Repository: https://github.com/alfonsusenrico/enrico-email-manager
Self‑hosted personal finance tracking application with backend APIs and PostgreSQL‑based data storage. Designed for real‑world usage and deployed on a private home server. Repository: https://github.com/alfonsusenrico/cash-flow-tracker
Individually built progressive web application featuring timeline feeds, image uploads, comments, timestamps, and real‑time chat using WebSocket communication, demonstrating end‑to‑end full‑stack system design. Repository: https://github.com/alfonsusenrico/sosmed_app
I’m interested in backend and AI‑focused roles where system reliability, clean architecture, and real‑world usage matter.