Software Development Intern

More than 9,000 organisations use our HR and payroll suite, from regional hospitals to school districts. We're looking for a Software Development Intern. We need a student who can write clean code, test it and explain what it does. Prior internships are not required. Our headquarters is in Warsaw, and about a third of the team works remotely from other countries. You will intern remotely with our team in Warsaw. We have hosted remote interns from several countries before. Core hours are 10:00 to 15:00 CET.

What you will do

• Profile slow endpoints and suggest fixes, such as adding an index or caching a result.
• Pair with other engineers over screen share to work through tricky problems.
• Add unit tests with pytest or Jest so new code does not lower coverage.
• Present a short demo of your work to the team every two weeks.
• Debug failing builds in the GitHub Actions pipeline and note what caused them.

You should be

• Students currently pursuing B.Tech, BE, BCA, MCA, B.Sc or a related degree, or fresh graduates (2026 or 2027 batch)
• Women returning to work after a career break are welcome to apply.
• Own laptop with at least 8 GB RAM and a reliable internet connection.
• Basic understanding of data structures, OOP and how HTTP requests work.
• Available for 30 to 40 hours a week for the full internship period.

6 months, starting immediately. Stipend: ₹55,000 to ₹70,000 monthly.

Perks: Performance bonus, Certificate, Internet allowance.

Please submit your CV in English.

Duration: 6 months. Start: Immediately.

Demo job created on 11jobs for testing and demonstrations. It is not an actual opening at Mainsail Labs sp. z o.o..