Software Engineering Intern

About us:

Our engineering, trust and safety, and customer support teams work across offices in Phoenix and several other countries. Since 1986, the company has expanded from listings into payments, shipping and seller financing.

Overview:

The intern will work on internal tools and APIs used by our support and operations staff. Daily standup on Google Meet, everything else async on Slack. The company is based in Phoenix, the US. Our team works from several countries. You will intern remotely with our team in Phoenix. We have hosted remote interns from several countries before. Core hours overlap with US Central time, 9:00 AM to 1:00 PM CT. We ship you a laptop and accessories before your first day.

Day to day:

• Write and test backend features in Python or Node.js under the guidance of a senior developer
• Query and update data in PostgreSQL or MySQL, including simple migrations
• Fix bugs from the Jira backlog, starting with small, well-defined tickets
• Refactor old modules when asked, keeping behaviour the same
• Raise pull requests on GitHub and respond to code review comments within a day

Requirements:

• Currently enrolled in a bachelor's or master's degree, graduating 2027
• Available for the full internship period
• Comfortable writing simple SQL queries (SELECT, JOIN, GROUP BY)
• Good grasp of at least one programming language: Python, Java, JavaScript or C++
• Available for 30 to 40 hours a week for the full internship period

Preferred:

• Contributions to an open source project, however small

What you get out of it:

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

Duration: 3 months

Start date: Dec 2026

Stipend: €1,800-€1,900 monthly

Perks:

• Mentorship
• Internet allowance
• Online learning budget
• Company laptop
• Letter of recommendation

Duration: 3 months. Start: Dec 2026.

Demo job created on 11jobs for testing and demonstrations. It is not an actual opening at Cobblegate HQ.