Staff Software Engineer, Ads API

Remote - Ontario, CanadaRemotePosted February 6, 2026

Job Description

Reddit is a community of communities. It’s built on shared interests, passion, and trust, and is home to the most open and authentic conversations on the internet. Every day, Reddit users submit, vote, and comment on the topics they care most about. With 100,000+ active communities and approximately 116 million daily active unique visitors, Reddit is one of the internet’s largest sources of information. For more information, visit www.redditinc.com.

Team Description

The Ads API team is a growing group that is critically important to the future of Reddit's business. This team's ownership is both horizontal and vertical: we own the platform layer that other product teams use to surface their features, as well as the external-facing APIs that third-party partners rely on to manage campaigns and generate reports. We also own the core products used by external customers in their integration, such as rate limiting, authentication, and SDKs.

The Ads API team has a dual mandate. First, by providing world-class tools and infrastructure, we enable our partners to grow their business and, in turn, grow Reddit’s advertising ecosystem. Second, by providing an easy-to-use and safe internal platform, we enable other teams across Reddit to expose functionality they own as part of our standardized Ads API platform.

Role Description

Reporting to the Ads API Engineering Manager, the person in this role will be the primary technical driver and architect for the Ads API team. This is a high-agency position for an engineer who can navigate ambiguity and take decisive ownership of the platform's technical direction in collaboration with other engineers, teams, and stakeholders. It is best classified as the Tech Lead archetype of Staff Engineer, and the most successful candidates will have experience serving in this capacity previously.

This role acts as both a technically adept deep coder and a force multiplier. It is responsible for working cross-functionally to help establish the long-term technical vision for the Ads API, ensuring our systems are highly available and capable of scaling with the marketplace. In this role you will lead large-scale projects through the entire software development lifecycle, from concept through implementation until delivery. You will also be the rising tide that raises all boats around you, serving as a technical leader and mentor to the Ads API team.

What You’ll Do

Steer: Work with the team to select, scope, and drive high-leverage projects that accelerate the development of the Ads API to help Reddit achieve its ambitious goals.
Architect: Help define the 2+ year technical roadmap for the platform, translating complex business needs into a clear strategy for highly available and performant backend services.
Build: Execute on a strategy to create a world-class developer experience for our external 3P partners, focusing on API design, versioning, security, discoverability, and usability.
Amplify: Mentor, coach, and collaborate with other technical contributors, fostering a culture of empathetic technical excellence and proactive problem-solving.
Collaborate: Work together with a variety of cross-functional teams, including Product Management, Product Marketing, and Sales, to ensure the Ads API meets the needs of all stakeholders.
Evolve: Learn and improve technical and non-technical abilities, staying up-to-date on trends and best practices in the Ads API space across the industry.