Software engineer
I help teams and founders ship web products and bring AI in with judgment: no hype, just code that holds up.
About
I've spent over 10 years building digital products, from startups to companies serving millions of people. Today I work as a freelancer and co-founder, joining teams that need to get projects over the line.
More about meI've worked with
Services
I work hand in hand with you, from strategy to deploy.
I design and build custom web apps and digital products, from prototype to production. I make sure they're fast, accessible and easy to maintain, with an architecture that holds up as the project grows and the team changes.
Learn moreI bring AI in where it genuinely helps: assistants, agents, RAG search, classification and automations that remove repetitive work. No flashy demos: measurable solutions, with cost control and continuous evaluation so they keep working over time.
Learn moreI review architecture, performance and technical decisions when something's stuck or it's time to scale. I find the bottlenecks, tidy up the codebase and leave a clear plan so your team can move forward without dragging technical debt.
Learn moreWork
An inspection company closed every check back at the office. Now it is signed next to the equipment and the report reaches their client on its own.
A fund whose website changes every time it invests or hires. Built from scratch so they can publish it themselves.
Four product developers building the consultancy we would have wanted to hire.
Testimonials
“Guille has been an exceptional teammate: great attention to detail and remarkable finesse when implementing. He worked on one of the most complex parts of the project and gained full command of the ecosystem, giving the operations side a fast turnaround to adapt the software every day.”
Juan MartínezCTOEvery day I see how Guillermo builds features, adapting to different projects. He understands client needs and matches the right technologies, taking care of every detail to deliver quality apps. I'd also highlight his communication skills across several languages.
Alba CasadoMarketing & Communications ManagerGuille is an outstanding engineer with a strong technical background and exceptional attention to detail. He is incredibly reliable, always delivering high-quality work and ensuring nothing slips through the cracks. And he brings an easygoing attitude that makes collaboration productive.
Jorge RegodesevesSoftware EngineerIt was a real pleasure working with Guillermo at Trucksters, where his performance as a Senior Front End Engineer was outstanding. His dedication to understanding users and his focus on adding value, across both processes and features, were key to improving the UX and boosting productivity.
Antonio Rodrigo SoutoSoftware EngineerTell me what you want to build. I'll come back with a clear plan, no strings attached.
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