I'm Angel Barrientos, a software architect and technical lead with over fifteen years building resilient systems for e-commerce, fintech, and electronic invoicing platforms across Latin America.
I bridge code, infrastructure, and people—translating complex business needs into architectures that scale and endure. My work blends pragmatism with ethics: clean code, clear communication, and consistent delivery.
- Current role: Technical Lead at Nyx, driving AWS strategy, backend architecture, and engineering standards.
- Focus areas: Software architecture, backend performance, and team leadership.
- Availability: Open to conversations about architecture, leadership, or senior backend roles.
- Location: Mexico City (remote-first).
- Writing: I share reflections on clean architecture, leadership, and DevOps culture at uetiko.com.
- Languages: PHP • Java • Python • C# (.NET Core) • JavaScript / TypeScript
- Frameworks & Platforms: Magento 2.x • .NET Core • Node.js • FastAPI • Spring Boot
- Cloud & DevOps: AWS (Lambdas, DocumentDB, IAM, CloudWatch) • IaC • Docker • CI/CD pipelines
- Architecture & Quality: Clean Architecture • Domain-Driven Design • SOLID • Automated testing • Observability
- Databases: DocumentDB / MongoDB • MySQL • PostgreSQL • Oracle
- OS & Tooling: Linux (daily driver) • Shell scripting • Advanced Git (porcelain & plumbing levels)
- Negotiation and alignment of complex stakeholders
- Clear, business-oriented communication
- Team mentoring and conflict resolution
- Agile facilitation with technical depth
- Calm leadership under delivery pressure
Technical Lead · Nyx · 2023 – present
Guiding AWS architecture and infrastructure automation. Establishing engineering rituals, documentation standards, and mentoring developers stepping into leadership.
Senior Software Engineer · Vass Company
Backend developer for Telefónica Chile (Magento 2.4). Improved performance, stabilized payment flows, and reduced critical bugs by 70%.
Senior Software Engineer · PagoFácil.net
Built and maintained the card-not-present payment gateway for Magento 2.3.
Developer & Junior PM · Enova México
Introduced XP/Scrum hybrid practices that shortened delivery cycles and improved QA metrics.
- Stoyco: designing AWS architecture and the data backbone on DocumentDB.
Guiding the engineering squad through service design, scalability patterns, and decision-making rituals. - Mentoring developers transitioning toward technical leadership.
- Researching Python async patterns in FastAPI and event-driven backends.
(•‿•) LinkedIn
(¬‿¬) uetiko.com
(ʘ‿ʘ) Open to meaningful conversations about software, systems, and people.
If my work or documentation has helped you:
Buy me a coffee — it keeps the neurons firing.