Senior Backend Engineer (Platform and API)

Requirements

• Practical experience designing, implementing, and maintaining public APIs, plug-in ecosystems, or extensibility platforms.
• Deep experience with modern stack — Node.js, TypeScript, GraphQL, and MongoDB.
• Experience leading backend projects from start to finish.
• Strong systems thinking and ability to anticipate downstream effects.
• Experience driving platform or infrastructure improvements.

Nice to haves

• Contributions to collaborative or multi-user product features.
• Fluency with modern AI tools.
• Experience influencing engineering culture through mentorship.
• Personal stake in content creation.

What you'll be doing

• Be part of a small, dedicated squad within the Channels and Platform team.
• Lead development of backend systems for the Buffer Platform.
• Improve and evolve internal systems, consolidate services, and improve tooling.
• Collaborate with engineers, product, and design to find the simplest path to success.
• Make steady improvements to performance, reliability, and data modeling.
• Participate in on-call rotation and day-to-day maintenance work.
• Contribute to shaping the engineering culture.

Perks and benefits

• Remote work in a fully distributed team.
• Opportunity to shape the direction and make an impact.
• Travel to work together in person once or twice per year.
• Collaborative work environment with a focus on diversity and inclusion.