Software Development Engineer II Full Stack - Business (Remote @ Colombia)

The OfferUp Business team owns platforms powering business verticals on their marketplace, including Storefronts, Auto Dealers, Services, Rentals, and Jobs.

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.

Responsibilities:

• Design, build, and deploy new user experiences and backend services across 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 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 runbooks, alerting, and monitoring for shipped features
• Participate in a reasonable on-call rotation with the team
• Use AI coding tools to increase daily development velocity and code quality
• Become a subject matter expert in one or more of the team's sub-domains

Requirements:

• 2+ years of professional software engineering experience
• Demonstrated ability to own delivery of multiple features end-to-end
• 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 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 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