Senior Full Stack Engineer (Agentic Search) - Platform

The Role

We are looking for a Senior Full Stack Engineer to build how developers and AI agents access our agentic web infrastructure. This role is based in our New York office, hybrid with the NYC team.

Our APIs are used by millions of developers and the AI agents acting on their behalf. The team owns the main API gateway, the customer platform (keys, usage, teams), identity and enterprise SSO, and the public interfaces to our product: the SDKs, CLI, MCP servers and other tools developers and agents use. You'll work closely with product, design and engineers across our R&D.

In this position, your responsibility will be to:

Design and ship features end to end, from the interface to the services and data behind it

Build and improve the API gateway: high traffic, low latency, reliable

Turn usage, billing and team data into fast, usable interfaces: tables, charts, filters and forms

Shape the self-serve journey from signup through activation

Build and operate identity and team access in production: OAuth and OIDC, role-based access, SAML SSO and SCIM, on providers such as Auth0, Okta, WorkOS or Clerk

Control who gets which features, with feature flags for staged rollouts and entitlements after rollout

Improve the public interfaces developers and agents use: the SDKs, CLI, MCP servers and docs

You may be a good fit if you:

Have 5+ years of full-stack engineering on customer-facing products or high-throughput APIs, in any mix of frontend and backend

Are strong in backend engineering, ideally in Python. Go, C++ or C with some Python experience also fits

Have built and operated latency-sensitive, high-QPS APIs: caching, async work, queues, retries and rate limiting, including long-running jobs and webhooks

Have shipped production UI with a modern frontend framework such as React, Next.js or TanStack, ideally in TypeScript

Have built data-heavy interfaces such as tables, charts and filters that stay fast

Are effective in a mature, user-facing system: you have joined a complex codebase, ramped up fast, shipped safely under real traffic, and been on-call for it

Have strong product and design sense, for interfaces and for APIs

See your work through from design to production, explain trade-offs clearly to partners, navigate ambiguity, and use AI tools in how you build

Strong candidates may also:

Have led a project or mentored others

Have taken a product from 0 to launch

Have built API-key issuance and lifecycle

Have built MCP servers or tools for AI agents

Have worked on billing or usage metering with Stripe, Metronome, Orb or similar

Pay Transparency

We offer competitive compensation and benefits packages. Actual compensation will be determined based on job-related factors, including experience, skills, qualifications, the level at which the candidate is hired, and geographic location, consistent with applicable law.

Base Compensation Range

$147,200—$224,300 USD