John Hawer Bernal Gonzalez
Senior Full Stack Developer |Java,Spring Boot, AWS
Professional profile
Senior Full Stack Engineer with 12+ years of experience designing , building , and deploying scalable , cloud-native SaaS platforms . Expert in Java/Spring Boot , PHP/Laravel , AWS/Kubernetes , and AI/LLM integration . Proven end-to-end ownership and international experience
Work experience
Led ERP SaaS from scratch, built DIAN e-invoicing, integrated AI assistant, managed framework migrations, engineered for 1,000+ tenants, and implemented advanced security and offline-first POS.
Major achievementArchitected and shipped a multi-tenant ERP SaaS for Colombia (Laravel 13, Filament 5, PostgreSQL, Redis), including DIAN e-invoicing, payroll, and an AI assistant (Claude API + RAG).
Developed backend microservices, CI/CD, Kubernetes deployments, React/TypeScript frontends, JWT authentication, and cross-functional collaboration for banking clients.
Major achievementDesigned and evolved 8+ Java/Spring Boot microservices, built CI/CD pipelines, containerized services on AWS EKS, and implemented robust security and observability.
Delivered modular Java codebases, integrated APIs, participated in Scrum, code reviews, and technical documentation.
Major achievementDeveloped enterprise Java/Spring Boot applications for telecom and finance, integrating third-party APIs and improving data flow.
Education experience
Servicio nacional de aprendizaje (sena) | Technician
