[Hiring] Software Development Engineer II @OfferUp

Role Description

The OfferUp Business team owns the platforms that power every business vertical on our marketplace; Storefronts, Auto Dealers, Services, Rentals, and Jobs. Our customers aren't casually browsing; they're running businesses on top of what we build, so every feature we ship has a direct, measurable impact on their livelihood and on OfferUp's revenue.

As a Full Stack Software Engineer II on the Business team, you'll be a proven contributor who ships features end-to-end across the stack. Your responsibilities will include:

• Design, build, and deploy new user experiences and backend services across our five business verticals, using React, TypeScript, GraphQL, Node.js, and Java.
• Own features end-to-end: plan, design, develop, deploy, measure, and iterate.
• Break down complex engineering problems into achievable tasks and deliver them within committed timeframes.
• Work collaboratively with cross-functional teams (Product, Design, Data, Business stakeholders) to design and implement new features.
• Contribute to A/B tests and use experimentation results to decide what ships.
• Actively participate in code reviews and enforce good patterns, testing, and edge-case handling.
• Coach and mentor junior team members, new hires, and interns.
• Create shared components, utilities, and services that improve team velocity across the stack.
• Maintain and improve the runbooks, alerting, and monitoring for the features you ship.
• Participate in a reasonable on-call rotation with the rest of the team.
• Use AI coding tools (Claude Code, Cursor, Copilot, and similar) to increase your daily development velocity and code quality.
• Become a subject matter expert in one or more of the team's sub-domains.

Qualifications

• 2+ years of professional software engineering experience.
• Demonstrated ability to own the delivery of multiple features end-to-end (plan, design, develop, and deploy) with high efficiency.
• Strong coding skills across the full stack: React, TypeScript, HTML, CSS, and modern web tooling.
• Good grasp of responsive design, performance, and cross-browser compatibility.
• Java and a working understanding of microservices and distributed-systems fundamentals.
• Experience building and integrating with REST or GraphQL APIs.
• Good knowledge of data structures and object-oriented design.
• Hands-on experience using AI coding tools (Claude Code, Cursor, Copilot, or similar) in a real engineering workflow.
• Follows good coding patterns, writes appropriate tests, considers trade-offs, and actively seeks out edge cases.
• Comfortable giving and receiving feedback in code reviews.
• A bias toward shipping, learning from production, and iterating quickly.
• An insatiable desire and ability to learn.
• BS or MS in Computer Science, or equivalent practical experience.

Requirements

• Fluency in any other modern OOO programming language (helpful, but not required).
• Experience with Agile development (helpful, but not required).
• Experience with AWS Cloud infrastructure (helpful, but not required).
• Experience around web package managers, Bower, bundler system, NodeJS, Python, webpack (helpful, but not required).
• Experience with A/B testing platforms (Statsig, LaunchDarkly, Optimizely) and analytics warehouses (BigQuery, Snowflake) (helpful, but not required).
• Experience consuming or integrating LLM-based APIs (e.g., Bedrock, Vertex AI, OpenAI) (helpful, but not required).
• Familiarity with AWS cloud infrastructure and CI/CD pipelines (helpful, but not required).

Company Description

OfferUp is dedicated to creating the simplest and most trusted way for people to buy, sell, and connect in their local communities. One of the top local marketplace apps for local buyers and sellers in the U.S., OfferUp makes it easy for people to discover more of what they need—from great deals and secondhand goods to jobs, services, home rentals, and more—right in their own communities.

• Founded in 2011 and based in Bellevue, WA.
• Available on iOS and Android, consistently ranked among the top shopping apps.
• Used by more than 1 in 6 adults in the U.S. in 2024.
• Backed by leading investors, including Andreessen Horowitz, Warburg Pincus, GGV Capital, T. Rowe Price, and Coatue Management.