Senior Engineer - Fabric Gateway

The Opportunity

Postman is now at one of the most consequential inflection points in its history. Enterprises are rapidly shifting from human-driven API workflows to multi-agent systems — where AI agents autonomously discover, call, and collaborate with APIs, tools, CLIs, and each other. Postman already owns the API design, governance, and lifecycle layer for the enterprise; the next frontier is owning the runtime layer for how agents actually interact with all of it.

Where Postman today is the API platform for human-first integration, we are building Postman into the agent interface fabric for AI-first integration. That transformation starts with Fabric Gateway — a brand new product, being built from scratch, that will serve as the policy-driven control plane governing how agents connect to APIs, services, and other agents at scale. This is a rare 0-to-1 opportunity inside a company with 40+ million developers already in the ecosystem.

About the Team

The Fabric Gateway team is building the API gateway for the AI era — one of Postman's most ambitious greenfield infrastructure products. We're a small, high-ownership team working 0-to-1, designing and shipping the foundational primitives that will power how agents and applications connect to services securely, at scale.

This isn't incremental work. We're building from scratch — making the kind of decisions that define a product's architecture for years. If you've built platform or infrastructure products at a cloud-native or SaaS company and know what it takes to go from zero to a production system engineers trust, you'll feel right at home here.

What You'll Do

• Design, build, and own critical systems of the Fabric Gateway from the ground up — this is founding-level engineering work.
• Lead architecture decisions for distributed systems that need to be fast, reliable, and correct at scale — handling high request volumes across a diverse ecosystem of services.
• Drive technical direction and make high-leverage decisions; you'll be setting patterns the rest of the team follows.
• Own observability, performance, and reliability end-to-end — SLA targets, monitoring, and on-call are your personal responsibility, not a handoff.
• Collaborate closely with the EM and PM to scope milestones, prioritize ruthlessly, and iterate toward Early Access and GA.
• Participate in design and code reviews, raise engineering standards, and mentor fellow engineers.

About You

• 6+ years of experience building infrastructure-level or platform software in cloud-native or SaaS environments.
• Proven 0-to-1 track record — you've taken something from whiteboard to production and operated it at scale.
• Deep systems design expertise: you've built distributed systems that handle high throughput, stay resilient under load, and scale horizontally without breaking operational simplicity.
• Proficiency in Go. Strong fundamentals in systems programming and performance-sensitive code are essential.
• Solid grasp of security primitives: mTLS, JWT, OAuth 2.0, RBAC/ABAC.
• High ownership mindset — reliability, performance, and security are your problem, not someone else's ticket.
• Strong communication skills; comfortable driving clarity in fast-moving, ambiguous environments.

Nice to Have

• Prior experience building or extending platform or gateway products.
• Familiarity with modern protocol ecosystems (HTTP/2, gRPC, WebSockets).
• Kubernetes-native deployment experience: Helm, operators, CRDs.
• Contributions to open-source infrastructure or developer tooling projects.
• Experience working in an early-stage 0-to-1 environment inside a larger company.