Raúl JuliánLópez Caña
Product Engineer
I turn product problems into scalable frontend systems — with clear architecture, strong developer experience, and AI-assisted engineering.
The arc
I started by shipping frontend features. Then I improved the systems developers use to build them. Now I work at the intersection of product, architecture and developer experience.
- 8+years shipping product
- 400+weekly OSS downloads
- Thousandsusers on shipped platforms
How I build
MCP, AI tooling and developer experience
At Galp Solar I own product surfaces end-to-end — and I invest in how the team builds.
- Built an MCP server to interact with the ecosystem — databases, OpenAPI APIs, codebase, integrations, monitoring and debugging
- Championed AI tooling (SDD, skills) to speed up the engineering team
- Raised frontend DX with a shared component library, testing patterns and CI practices
What I build
Shipping that sticks
Three projects that show ownership, product impact and systems that last.
Galp Solar Simulator
Solar energy simulator for residential and EV charger customers — owned end-to-end with product discovery, architecture and AI-assisted DX.
- E2Eproduct ownership
- MCPecosystem server shipped
- DXshared library & AI tooling
miResi App
Hybrid app adopted by the majority of customers — architecture, delivery and release as Frontend Lead.
- Majorityof customers adopted the app
- Leadarchitecture & release ownership
express-query-adapter
Open source Node.js library with 400+ weekly downloads. Transforms Express req.query into TypeORM queries.
- 400+weekly downloads
- semverversioned & tested
Where I speak
Talks and community
Sharing what I learn — from agentic systems to design-engineering collaboration.
