Software Engineer Intern - Remote

About Heronloop Apps:

We are a small, self-funded team building a booking app for independent salons and tattoo studios. Small accounting firms in Flevoland use our engagement letter and e-signature tool, and most heard about us from a colleague.

Overview:

Our Platform team is five engineers working fully remote across two time zones. The intern picks up small backend tickets first and moves to bigger features once comfortable. Fully remote. You can work from anywhere in the Netherlands. Hours are flexible, with one short team call each morning. You get a company laptop and a headset before you start.

Responsibilities:

• Present a short demo of your work to the team every two weeks.
• Build REST API endpoints and document them in Postman or Swagger.
• Refactor old modules when asked, keeping behaviour the same.
• Update the README and internal Confluence pages when you change how something works.
• Write and test backend features in Python or Node.js under the guidance of a senior developer.
• Pair with other engineers over screen share to work through tricky problems.
• Profile slow endpoints and suggest fixes, such as adding an index or caching a result.

What we're looking for:

• Based in the Netherlands for the duration of the internship.
• Currently enrolled in a bachelor's or master's degree, graduating 2026, 2027 or 2028.
• Eligible to work in the Netherlands.
• A GitHub profile with at least two projects you wrote yourself.
• Basic understanding of data structures, OOP and how HTTP requests work.
• Must be able to overlap at least 4 hours a day with the team's working hours.
• Comfortable writing simple SQL queries (SELECT, JOIN, GROUP BY)

Bonus points:

• Knowledge of Linux command line basics.
• Exposure to Docker or a cloud platform such as AWS or GCP.
• Competitive programming practice on LeetCode, Codeforces or CodeChef.

What you'll learn:

• Writing tests is part of the job here, and you will get good at it.
• How a production codebase is organised, deployed and monitored.

Duration: 3 months

Start date: Dec 2026

Stipend: €2,000 - €2,300/month

What we offer:

• Flexible hours.
• Internet allowance.
• Company laptop.

Due to the number of applications, only shortlisted candidates will be contacted.

Duration: 3 months. Start: Dec 2026.

Demo job created on 11jobs for testing and demonstrations. It is not an actual opening at Heronloop Apps B.V..