Hyalen M. Caldeira

AI Architect & Senior Full-Stack Engineer
- EST. 2026 .v1 -

.Portfolio

Some of the most recent projects I've selected.

.About Me

I'm a Senior Software Engineer who enjoys working across domains - AI Architecture, Full-Stack Development, DevOps/SRE, Cloud Engineering and SAP BTP/CAP/CPI. I like building systems end-to-end, solving complex problems, and creating tools that make other engineers faster and more productive.

A big part of my recent experience is focused on AI Systems and Multi-Agent Workflows. I've designed and developed AI Platforms using Python, LangGraph, LangChain, and MCP, including configurable workflow engines, Multi-Code-Generation Systems, and reusable MCP Blueprints used across teams and clients. I've also built AI Tools that reverse-engineer BPMN workflows, analyze process logic, and automatically generate documentation and User Stories - reducing analysis time and increasing clarity in large Integration Projects. I actively design and build advanced AI Systems, including a public, source-available platform for reverse engineering enterprise COBOL applications, developed independently in parallel with my professional work, by combining Compiler Theory, Graph-Based Program Analysis, and selectively orchestrated LLM Workflows.

Beyond AI solutions, I've built self-healing platforms, improved Kubernetes reliability, automated infrastructure with Terraform and Helm, and implemented CI/CD pipelines and observability stacks using Splunk, Grafana, and Dynatrace.

My background spans mission-critical Government Applications, high-traffic Ad Network APIs, E-commerce Platforms, and SAP BTP/CPI integration projects connecting enterprise systems. I've built full-stack applications with Java and Spring Boot, modernized legacy systems, and delivered scalable RESTful APIs across diverse business domains.

I work in Agile environments with a strong focus on Test-Driven Development, delivering production-grade solutions that teams can depend on.

I'm a builder at heart - I thrive on creating scalable systems, automating repetitive workflows, improving developer experience, and shipping software that solves real problems.

.Certificates

.How to contact me

For business contacts, collaborations, quotes or just to say "hello" write to:

hyalen@gmail.com

You can also find me on: