Raul Xiloj.
About
Software engineer focused on distributed systems and e-commerce infrastructure. 6+ years shipping production systems at scale.
Deep hands-on experience with Node.js/TypeScript, Go and Python — building REST/GraphQL APIs, event-driven services, and integrations that hold up under real load.
Currently a Technical Lead at Walmart México y Centroamérica, where I stay hands-on while also mentoring engineers and raising the bar on reliability and delivery practices.
Outside of work: building side projects, going deep on platform engineering and observability, and occasionally breaking things on purpose to understand them better.
Skills
LANGUAGES
4BACKEND
6FRONTEND
3DATA
6EVENTING
3CLOUD
3DEVOPS
5PRACTICES
5Experience
Technical Lead
- Contribute to system design and stay hands-on delivering backend services for large-scale e-commerce, balancing long-term scalability with near-term delivery.
- Own enterprise integrations and middleware connecting multi-brand apps with VTEX; design and evolve REST/GraphQL APIs with versioning and performance in mind.
- Strengthen operational maturity through production readiness practices, release discipline, and better observability/monitoring.
- Partner with Product/business to shape technical solutions and break down complex initiatives.
- Promote scalable design principles (resilience, fault isolation, backward compatibility) through reviews, mentorship, and shared standards.
Freelance Engineer
Software Developer
Backend Developer
Backend Developer
Jr Developer
Freelance
Education
M.Eng in Industry Engineering
Focus on Data Science.
Bachelor in Computer Science & Systems Engineering
Teacher Assistant — Computer Programming 2 (2021), as part of final practices.
Courses & Learning
// continuous learning is the only stack that ages well
Now
CURRENT FOCUS
Most of my time goes into system design for our e-commerce platform — integrations, GraphQL evolution, observability. Outside work, poking at serverless patterns with Python and AWS Lambda.
- READINGDesigning Data-Intensive Applications — Martin Kleppmann
- BUILDINGServerless experiments with Python + AWS Lambda
- LEARNINGAI/ML — from curious to actually building things
- LISTENINGModern Wisdom, Alex Hormozi, the occasional TED Talk
- LOCATIONGuatemala City, GMT-6
Contact
Let's build something reliable.
Open to interesting backend / platform / system-design conversations. Reply within 24h.