Junior Web Developer (Internship)

Who we are:

Headquartered in Madrid since 2008, the company now sells in 40 countries and supports customers in 11 languages. Annual releases gave way to two-week sprints years ago, and the platform now handles over 200 million API calls a day. Code review is required on every pull request, and nobody merges their own changes.

About the role:

This internship suits a student who has already built a few websites and wants to work on a codebase with other people. Remote within Spain. The team meets in Madrid once a quarter, travel covered. Normal working hours, Monday to Friday.

Day to day:

• Update content and plugins on the WordPress marketing site.
• Push code to GitHub through feature branches and pull requests.
• Attend sprint planning and the twice-weekly standup over Google Meet.
• Convert Figma designs into responsive pages using React, HTML, CSS and Tailwind.
• Test forms and checkout flows before each release and log issues in Jira.
• Fix layout bugs across Chrome, Safari and Firefox, and on small mobile screens.
• Connect frontend screens to REST APIs and handle loading and error states properly.
• Improve page load times by compressing images, lazy loading and trimming unused code.

Requirements:

• Eligible to work in Spain.
• Based in Spain for the duration of the internship.
• Currently enrolled in a bachelor's or master's degree, graduating between December 2027 and June 2028.
• Laptop that can run Node.js and VS Code smoothly, and a stable internet connection.
• Clear written English for Slack updates and ticket comments.
• Willing to learn new tools quickly and ask questions when blocked.

Bonus points:

• Some knowledge of MongoDB, MySQL or Firebase.
• Familiarity with WordPress theme or plugin editing.

Duration: 6 months

Start date: Mar 2027

Stipend: €960 - €1,250 per month

Perks:

• Certificate of completion.
• Letter of recommendation.
• Possibility of a full-time offer.

Duration: 6 months. Start: Mar 2027.

Demo job created on 11jobs for testing and demonstrations. It is not an actual opening at JS Data S.L..