Senior Full Stack Engineer | AI Engineer | Forward Deployed Engineer
Moving with the market.
Senior Full Stack Engineer and Mobile Engineer with 16+ years building and modernizing enterprise systems across e-commerce, healthcare, insurance, fleet safety, and satellite geolocation. Deep expertise in Java/Spring Boot microservices, event-driven architectures (Kafka, RabbitMQ, Redis), and modern web and mobile frontends (React, Angular, Vue.js, React Native) on AWS. Currently embedded with a U.S. enterprise e-commerce client as order-lifecycle domain owner, resolving live production incidents across an ATG–SAP ecosystem. Practices AI-assisted, spec-driven engineering with Claude, Copilot, and agentic workflows — delivering faster without compromising quality.
MANUEL HERRERA MESÉN
Selected work
three platforms, in productionLed the design and development of Java EE 8 / Spring Boot microservices for IntelliCentrics' healthcare vendor credentialing platform.
Technical leadership of scalable Java EE 8/Spring Boot backend and Angular frontend for Kinsale Insurance's risk and policy management platforms, as part of a Gorilla Logic team.
Order lifecycle domain owner on Lakeshore Learning's B2B/B2C e-commerce platform, integrating Oracle ATG Commerce and SAP across 1,000+ orders a day.
Career journey
16+ yearsSenior Full Stack Engineer and Mobile Engineer with 16+ years building and modernizing enterprise systems across e-commerce, healthcare, insurance, fleet safety, and satellite geolocation. Deep expertise in Java/Spring Boot microservices, event-driven architectures (Kafka, RabbitMQ, Redis), and modern web and mobile frontends (React, Angular, Vue.js, React Native) on AWS. Currently embedded with a U.S. enterprise e-commerce client as order-lifecycle domain owner, resolving live production incidents across an ATG–SAP ecosystem. Practices AI-assisted, spec-driven engineering with Claude, Copilot, and agentic workflows — delivering faster without compromising quality.
Stack
what I reach for firstEngineering fingerprint
how a request travelsThe same shape shows up in most systems I have owned: a thin edge, a domain service that holds the rules, events instead of chatter between services, and a data layer nobody queries directly.
Backend
Microservices that survive real traffic, and the event plumbing between them.
Frontend
Enterprise frontends at scale, including the ones nobody wants to touch.
Mobile
Shipped to stores, not just to staging.
Platform
Pipelines, containers and clusters that other people can operate.
AI-assisted, spec-driven engineering — in production, not in demos.
How I actually work with AI day to day: specs first, agents doing the mechanical passes, and a human reviewing every diff that reaches a client's repository.
How I work
remote, from Costa RicaRemote, based in Costa Rica, with the same care I'd put into my own product — coffee in hand, focus intact. You don't need an office to take code quality seriously.
Writing
engineering, applied AI, and where work is headingThe tech market isn't stabilizing, it's splitting in two. Why the right question isn't when it gets better, but where you're moving.