sonhja
Senior Front End Developer
Senior Frontend Developer with a focus on React, TypeScript, and modern UI libraries like MUI. I’ve spent the last years building accessible, scalable apps, especially in public sector projects like the European Commission, always with an eye on user experience and clean architecture.Â
I’m used to working in Agile teams (Scrum), using Jira and Confluence to stay aligned and efficient. I enjoy mentoring junior developers and believe that good communication and team spirit are just as important as technical skills.
In 2025 I started diving into blockchain technologies — learning, experimenting, and exploring how decentralization can shape the future of the web.
I’m used to working in Agile teams (Scrum), using Jira and Confluence to stay aligned and efficient. I enjoy mentoring junior developers and believe that good communication and team spirit are just as important as technical skills.
In 2025 I started diving into blockchain technologies — learning, experimenting, and exploring how decentralization can shape the future of the web.
Experience: 11 years
Yearly salary: $96,000
Hourly rate: $55
Nationality: 🇪🇸 Spain
Residency: 🇪🇸 Spain
Experience
Senior Frontend Developer
Altia 2025 - 2025
Senior Frontend Developer – European Commission (EUIPO) Led the design and development of modern web interfaces using React, TypeScript, and Material UI (v5–v7), ensuring compliance with accessibility standards and institutional guidelines. Collaborated with cross-functional teams to deliver robust, scalable, and maintainable frontend architecture tailored to the needs of the European public sector.
Senior Frontend Developer
Netcompany - Intrasoft 2020 - 2024
Senior Frontend Developer – European Commission (EUIPO) Led the design and development of modern web interfaces using React, TypeScript, and Material UI (v5–v7), ensuring compliance with accessibility standards and institutional guidelines. Collaborated with cross-functional teams to deliver robust, scalable, and maintainable frontend architecture tailored to the needs of the European public sector.
Software Developer
Greenfinch Technologies 2019 - 2020
Technical Project Manager/Fullstack Developer/Team Lead using: .Net, WebServices, Angularjs, Angular 9, Bootstrap, Azure Services, DevOps, Jira, GitHub. My role included developing components or customizations, creating secure SSO systems, and maintaining existing tools.
Digital Transformation Project Manager
Balearia 2018 - 2019
I was employed as Digital Transformation Project manager. My role included optimizing operations by an IT infrastructure modernization project plan and overseeing the design process.
Software Developer
Balearia 2016 - 2018
I've been employed as Fullstack developer. My role included maintenance and development of the corporate Web application and analysis of requirements for new functionalities.
Senior Software Developer
Electronic Arts 2016 - 2016
Backend developer. Development and support of video game translation tool.
Project Manager
Freelance 2015 - 2016
Direction and creation of a 3D platform videogame. My role included management and team lead, level design, and developing gaming software.
Software Developer
FacePhi Biometrics 2012 - 2015
As a Fullstack developer, I worked with international clients to apply security standards created by the FIDO Alliance and develop face recognition systems.
Software Developer
Amadeus 2011 - 2012
Correction and support of reported bugs for the GDS (Global Distributed System).
Software Developer
IMED Hospitales 2010 - 2011
Frontend developer of customized applications aimed at medical use.
Skills
agile
bootstrap
discord
ethereum
freelance
front-end
javascript
jira
project-manager
react
scrum
typescript
web3
english
spanish