Backend Engineering Intern, Summer 2027

About us:

Two developers, a designer and a support lead make up most of the company, so everyone touches the product. Small accounting firms in Illinois use our engagement letter and e-signature tool, and most heard about us from a colleague. Code review is required on every pull request, and nobody merges their own changes.

The internship:

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. Remote within the US. The team meets in Naperville once a quarter, travel covered. Monday to Friday, regular working hours, flexible start and finish. You need a reliable internet connection and somewhere quiet to work.

Responsibilities:

• Debug failing builds in the GitHub Actions pipeline and note what caused them
• Write and test backend features in Python or Node.js under the guidance of a senior developer
• Add unit tests with pytest or Jest so new code does not lower coverage
• Build REST API endpoints and document them in Postman or Swagger
• Refactor old modules when asked, keeping behaviour the same

Who can apply:

• Based in the US for the duration of the internship
• Currently enrolled in a bachelor's or master's program, graduating 2027 or 2028
• Authorized to work in the US. CPT and OPT candidates are welcome to apply
• A GitHub profile with at least two projects you wrote yourself
• Good grasp of at least one programming language: Python, Java, JavaScript or C++
• Own laptop with at least 8 GB RAM and a reliable internet connection
• Some experience with Git, even if only on college or personal projects
• Basic understanding of data structures, OOP and how HTTP requests work

Preferred:

• Any previous internship, hackathon or freelance coding work

What you'll learn:

• How a production codebase is organised, deployed and monitored
• Code review on every pull request, so expect a lot of feedback on naming, tests and structure

Duration: 10 weeks

Start date: Summer 2027

Stipend: $42.00-$54.50 an hour

What we offer:

• Company laptop
• Mentorship from a dedicated buddy and manager
• Flexible hours
• Paid sick time
• Return offer opportunities

Duration: 10 weeks. Start: Summer 2027.

Demo job created on 11jobs for testing and demonstrations. It is not an actual opening at Tessaro Digital Inc..