Available to hire
Hi, I’m Javier, a Frontend developer and software engineer with 20+ years of experience. Technology geek. I enjoy solving problems, learn about new patterns and techniques. I have experience in leading projects, and like to share knowledge with peers, with self-improvement always in mind. I deal with complex high traffic web sites.
In my free time I like to do sports (especially climbing), travelling, gaming & good music. Currently experimenting the best AI workflow, with Opencode: agents, skills, mcps, etc
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Language
English
Fluent
Dutch
Intermediate
Spanish; Castilian
Fluent
Work Experience
Frontend Developer at Tele2 Netherlands
April 1, 2014 - March 31, 2019Part of SCRUM team responsible for tele2.nl; migrated from Vanilla JS to mobile-first site with Sass, Grunt, RequireJS and Bootstrap; performance and accessibility improvements; promoted to Senior Frontend after 2 years and led a frontend team of up to 4; stakeholder management; backend migration to Docker Swarm and Jenkins.
Frontend Developer / Consultant at NNI Investments Partners
June 1, 2019 - March 31, 2020Helped build and enhance the nnip.com site with React + Redux, Contentful and serverless AWS architecture.
Tech Lead & Partner at Erik’s Digital
June 1, 2021 - February 28, 2022Lead frontend initiatives for Lore, an EdTech startup; worked with international teams (US, Mexico, Spain) and supported 500+ active students across four business schools; architecture, code reviews and mentoring.
Senior Frontend Developer at Admarkt
July 1, 2022 - July 1, 2024Full revamp of an advertising portal for Benelux + Canada; React + Next.js, BFF API; Chakra UI and styled components; Storybook; strong emphasis on unit testing (Jest, Testing Library) and QA; design system alignment in collaboration with product teams.
Frontend Developer at Advertising Portal - Berlin (Contract)
May 1, 2025 - PresentTook over development of a new Advertising portal, providing full control and analytics for B2C customers; built with Astro + ReactJS + Tailwind; Vite-based tooling; UI/UX prototyping and testing.
Tech Lead and Partner at Lore Inc
February 1, 2021 - PresentLore is an EdTech startup, created by MIT students, that provides an innovative learning interface. Currently
working with 4 Business Schools (US, Mex and Spain) with more than 500 active students.
Develop together with an external team a React Native app with advanced features like audio management,
profile and analytics, offline mode and SSO among others.
Automatic audio generation with AI Google text-to-speech and SSML. AWS Lambdas (Python) and Docker.
Maintain and extend current website (www.loreapp.co) built in Next.js, with Intranet tools for internal tasks.
Develop our own API with Strapi CMS (Node).
SSO and communication through LTI Advance to LMS like Canvas, Moodle or Blackboard`
Handled communication with both stakeholders and clients.
Education
Degree in Computer Science Engineering at Universidad Autónoma de Madrid
January 1, 2001 - January 1, 2006Qualifications
Industry Experience
Software & Internet, Education, Telecommunications, Media & Entertainment, Professional Services
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
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