Software Engineering Intern – Summer 2026

OfferUp

Software Engineering Intern working in a hybrid role at OfferUp to build systems and experiences. Collaborating closely with engineers and product managers in a fast-paced environment.

Posted 6/13/2026internshipBellevue • Washington • 🇺🇸 United StatesEntry Level💰 $48 - $56 per hourWebsite

Tech Stack

Tools & technologies

CloudDistributed SystemsJava

About the role

Key responsibilities & impact

Ship real code: Design, build, and ship features that run in production and reach real users, not throwaway prototypes.
Own a meaningful problem: Take a defined piece of work from design through delivery, with the support of your engineering manager and teammates.
Build across the system: Develop and improve the services, APIs, and experiences that power OfferUp, and learn how the pieces fit together end to end.
Move fast and do spike work: Investigate open-ended problems, prototype solutions, and turn technical spikes into clear recommendations the team can act on.
Leverage AI tools: Use tools like Claude and Gemini to ramp up faster, navigate the codebase, accelerate spike work, and raise the quality of what you ship.
Collaborate across the team: Work closely with engineers, product managers, and designers to turn ambiguous requirements into shipped, well-tested features.
Care about quality: Write tests, participate in code reviews, and help keep our systems observable, reliable, and maintainable.
Present your work: Share what you built and what you learned with the broader engineering and product teams at the end of your internship.

Requirements

What you’ll need

Currently enrolled in an undergraduate or graduate (or equivalent) program, returning to school after the internship.
Prior internship or project experience building software in a team setting.
Familiarity with Java or a similar programming language.
Exposure to cloud platforms, databases, APIs, or distributed systems.
Experience with two-sided marketplaces, mobile apps, or large-scale consumer products.
Comfort using AI coding assistants as part of your day-to-day workflow.

Benefits

Comp & perks

This is a non-benefits-eligible internship. No additional compensation beyond hourly wages is offered.

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

JavaAPIscloud platformsdatabasesdistributed systemssoftware developmenttestingcode reviewsprototypingtwo-sided marketplaces

Soft Skills

collaborationproblem-solvingcommunicationteamworkadaptabilityquality focuspresentation skillsownershipcritical thinkingtime management