OfferUp is dedicated to changing the way people buy and sell in their communities. As the largest mobile marketplace for local buyers and sellers in the U.S., the company offers iOS and Android apps that make selling an item as easy as snapping a picture from your mobile device. Founded in April 2011, OfferUp is reinventing local commerce by helping consumers uncover value through simplicity and trust. In 2020, OfferUp combined with Letgo to reach more than 20M monthly users.

At a Glance

• 100M+ Downloads
• 20M+ monthly users
• Top 5 Shopping app in App Store and Google Play Store for three years
• 15%+ of adults in several markets use OfferUp every month (LA, Miami, Phoenix, Seattle, Las Vegas, Riverside, Orlando)
• OfferUp works directly with nearly 2000 US law enforcement agencies to build trust in local communities

About the role: 

The MarketPlace Core team is a key component of OfferUp’s vision to ‘empower people to connect and prosper’. As a MarketPlace Core team member we get to be a full stack developer. We  decide the infrastructure, direction for GraphQL technology, and facilitate the adoption of it across OfferUp.We also own core components of react/native based apps. Our Impact spans across multiple teams.

As a Senior Software Development Engineer with GraphQL /React/React Native experience you will be leading architecture/performance improvements, defining best practices, infrastructure, building reusable components for your team, and also socializing them with other teams. You will take pride in the operational excellence of the OfferUps GraphQL middle tier And web/app clients.

Here’s more of what you will get to do:

• Cross-functional point of contact for technical questions with other Tech Leads and Product Managers.
• Provide mentorship, technical direction to team members on a day-to-day basis.
• Responsible for the operational excellence of the team.
• Continuously discover, evaluate, and implement new technologies/best practices to maximize development efficiency.
• Participate in on-call rotation duties.
• Dedicated to optimizing the performance and scalability of the OfferUp infrastructure as the service/clients continue to grow.
• Help maintain code quality, organization, and automation. 
• Collaborate with third-party providers on an as-needed basis, and evaluate/debug/implement 3rd party SDKs.
• Create solutions and/or frameworks that make other team members better and faster.
• Develop full stack functionality.

You’ll thrive in this role if you have:

• All OfferUp employees are required to receive Covid-19 vaccinations unless an employee is in need of an exemption from this policy due to a medical reason, or because of a sincerely held religious belief.
• Experience architecting and implementing multiple GraphQL API based services from the ground up.
• Experience with  with front end technologies React/React Native, Apollo Client/Relay
• Experience with alerting and monitoring tools similar to DataDog.
• Strong coding skills in frontend languages such NodeJs, Typescript or other modern programming languages
• Excellent knowledge of Data Structures and Algorithms
• Be comfortable designing stateless or stateful services on top of cloud infrastructure like AWS
• Experience with Agile development
• Above all, you thrive in a culture that values collaboration, mentorship, and learning
• BS or MS in Computer Science or related discipline
• Eligible to work in the United States

Helpful, but not required:

• Java coding experience
• React Native/Native app development experience
• Experience building adoption of GraphQL as a new technology for a mission-critical application.
• Prior proven experience of being a technical lead of a team of 4+ members
• Scrum experience
• Github repo with your own code we can view

OfferUp is changing the way people buy and sell locally and we’ve built a dynamic team to do it. To learn more about what it’s like to work at OfferUp, check out our blog: https://blog.offerup.com/tagged/culture

OfferUp provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, sex, national origin, age, disability or genetics. In addition to federal law requirements, OfferUp complies with applicable state and local laws governing nondiscrimination in employment in every location in which the company has facilities. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, transfer, leaves of absence, compensation, and training.

OfferUp expressly prohibits any form of workplace harassment based on race, color, religion, gender, sexual orientation, gender identity or expression, national origin, age, genetic information, disability, or veteran status. Improper interference with the ability of OfferUp’s employees to perform their job duties may result in discipline up to and including discharge.