Summer Software Engineering Intern

Our engineering group is split into roughly 60 product teams, each owning its services end to end, with on-call shared across time zones. Most engineers work remotely and come into the office one week a quarter for planning.

About the internship

Thatchhall Labs is hiring a Summer Software Engineering Intern for Feb 2027. We need a student who can write clean code, test it and explain what it does. Prior internships are not required. Remote within Spain. The team meets in Madrid once a quarter, travel covered. Normal working hours, Monday to Friday.

Responsibilities

• Present a short demo of your work to the team every two weeks
• Profile slow endpoints and suggest fixes, such as adding an index or caching a result
• Build REST API endpoints and document them in Postman or Swagger
• Raise pull requests on GitHub and respond to code review comments within a day
• Pair with other engineers over screen share to work through tricky problems

Who you are

• Eligible to work in Spain
• Currently enrolled in a bachelor's or master's degree, graduating 2027 or 2028
• Available for 30 to 40 hours a week for the full internship period
• Comfortable writing simple SQL queries (SELECT, JOIN, GROUP BY)
• A GitHub profile with at least two projects you wrote yourself
• Basic understanding of data structures, OOP and how HTTP requests work
• Some experience with Git, even if only on college or personal projects

Nice to have

• Any previous internship, hackathon or freelance coding work

What you get out of it

• How a production codebase is organised, deployed and monitored
• Certificate and letter of recommendation on completion, plus a pre-placement offer for strong performers
• Writing tests is part of the job here, and you will get good at it

Program dates: Feb 2027, 5 months.

Compensation: €1,350 - €1,400 per month

Perks

• Flexible hours
• Letter of recommendation
• Online learning budget
• Paid public holidays
• Mentorship

Tell us your notice period and what salary you are looking for.

Duration: 5 months. Start: Feb 2027.

Demo job created on 11jobs for testing and demonstrations. It is not an actual opening at Thatchhall Labs S.A..