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Marcos Andres LerinML
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Marcos Andres Lerin

@marcosandreslerin

I build enterprise Java backends, APIs, integrations, and cloud applications.

Mexico
Message

I've built enterprise backend systems and integration services for 3Pillar Global, Digital Air Strike, Tiempo Development, Global Hitss, and The Walt Disney Company. At 3Pillar Global, I develop Java/Quarkus APIs that connect enterprise platforms with customer systems, working across PostgreSQL, AWS, and Jenkins CI/CD.

With 15+ years in Java engineering, I've delivered REST and SOAP services, production support, technical design, code reviews, and mentoring. I use GitHub Copilot with Claude Opus and Claude Sonnet for development, refactoring, debugging, testing, documentation, and technical analysis while reviewing generated code for security, maintainability, and architectural consistency.

Experience

Work history, roles, and key accomplishments

3Pillar Global logoPG
Current

Senior Software Engineer

Jan 2021 - Present (5 years 7 months)

Develop Java/Quarkus APIs and integration services connecting enterprise platforms with customer systems. Translate business and integration requirements into technical solutions, and troubleshoot application, API, database, and infrastructure issues.

Education

Degrees, certifications, and relevant coursework

IR

Instituto Tecnológico Superior de Poza Rica

Bachelor of Engineering, Computer Systems Engineering

Studied Computer Systems Engineering, focusing on software development and systems design.

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