About Humberto
Help companies transform legacy systems into modern, scalable architectures. Specialist in Java, .Net, and Microservices with Docker.
I focus on high-impact projects where technical debt is a challenge. By implementing SOLID principles, Hexagonal architecture basis, Port & Adapters strategy, and automating workflows with Jenkins, I ensure your software is production-ready and future-proof.
What I offer:
- Expertise in migrate legacy systems or modernize a monolithic's in distributed systems with WebServices or APIs, even Microservices.
- Full-stack development (Java 17/21, .Net Core).
- Containerization and CI strategy.
- Technical leadership for mid-to-long term projects (3-6 months).
- Technical English for global teams.
Available for immediate start on a freelance/contract basis.
Spanish
Native or bilingual
English
Conversational
Remote only
Primarily works remotely
Experience
- Self-EmployedIndependent Senior Backend EngineerDIGITAL AND ITFebruary 2026 - Today (6 months)Mexico City, Mexico
- Contributing to AI training projects through Outlier (Aether program) — reviewing and validating technical data content.
- Developing and architecting backend solutions for independent B2B projects, utilizing modern development practices.
- Active on Braintrust, SME Careers, and index.dev — vetting processes completed or in progress.
- Cetelem MéxicoTechnical Lead & Senior Java EngineerBANKING AND INSURANCEJune 2022 - July 2025 (3 years and 1 month)Mexico City, Mexico
- Led the hands-on engineering and architectural evolution of the core credit-granting platform (CreditoClick), migrating systems to REST APIs using Hexagonal Architecture (Ports & Adapters).
- Architected and coded critical third-party integrations, including biometric onboarding (FIMPE/INE) and electronic signatures (Legalario), ensuring security and strict contract compliance.
- Implemented observability across all components using SLF4J/Log4j, transaction auditing, security analysis, and Splunk integration for structured logging.
- Maintained and optimized CI/CD pipelines (Git, Jenkins) to ensure production stability, while actively resolving technical debt and executing critical library upgrades.
- Pioneered the backend migration and coexistence of the Cetelem granting Core with the Inbursa Loan Management System using anti-corruption layers.
- Cetelem MéxicoSenior Backend Developer & Tech LeadBANKING AND INSURANCEJanuary 2015 - May 2022 (7 years and 4 months)Mexico City, Mexico
- Designed, coded, and maintained versions 1 and 2 of CreditoClick, managing over 40 web services using Spring Boot and strict layer separation practices (Data, Service, Business, Controllers).
- Developed initial API definitions and consumer-driven contracts (Spring Boot) to seamlessly connect external partners and applications with the distributed core.
- Engineered the backend infrastructure and REST APIs for KIAClick, the company's inaugural biometric onboarding mobile application.
- Ensured code quality through hands-on code reviews, unit/integration testing, and the creation of Spring Batch scripts for critical financial ETL processes.
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Education
- Bachelor of Electronics EngineeringUniversidad Autónoma Metropolitana.1994Bachelor of Electronics Engineering
- Google Cloud FundamentalsSantander - Coursera2025Google Cloud Fundamentals