Senior Full Stack Engineer (Agentic Search) - Platform

Tavily; New York (NY); Hybrid; USD 147,000 - 224,000; Full time

Benefits offered by this job

Health insurance

401(k) plan with company match

Parental leave

Remote work reimbursement

Disability & life insurance

Job summary

Tavily in New York City is seeking a Senior Full Stack Engineer to build and scale agentic web infrastructure for developer access to our platform. The role offers hybrid work in NYC and impact across API gateway, self-serve onboarding, and enterprise identity.

You’ll ship features end-to-end, own critical interfaces, and work with AI-driven products. The ideal candidate has 5+ years of full-stack experience, strong backend with Python (plus Go/C++/C), and a proven track record delivering

Qualifications

• 5+ years of full-stack engineering on customer-facing products or high-throughput APIs.
• Strong backend experience, preferably in Python; Go, C++ or C with Python exposure also fits.
• Shipped production UI with modern frontend framework such as React, Next.js or TanStack, ideally in TypeScript.
• Built data-heavy interfaces such as tables, charts and filters that stay fast.
• Experience with latency-sensitive, high-QPS APIs: caching, async work, queues, retries and rate limiting.
• Experience with on-call for production systems and operating in a mature, user-facing system.
• Strong product and design sense for interfaces and APIs; able to explain trade-offs clearly.

Responsibilities

• 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.
• Control feature rollouts with flags and entitlements after rollout.
• Improve the public interfaces developers and agents use: the SDKs, CLI, MCP servers and docs.

Job description

Senior Full Stack Engineer (Agentic Search) - Platform

New York City, New York, United States

About Tavily

We'rebuilding the infrastructure layer for agentic web interaction at scale. Our API is designed from the ground up to power Retrieval-Augmented Generation (RAG) and real-time reasoning in AI systems. By connecting LLMs to high-quality, trustworthy web content, we help developers build agents that are not only intelligent — but also informed.

We work with some of the most innovative teams in AI — from small startups shaping the ecosystem to the largest enterprises deploying AI at scale. Whetherit'spowering sales assistants, research copilots, or internal knowledge tools,we'rethe missing link between LLMs and the real world.

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

Why Tavily ?

• Full ownership — small team, you own the entire infrastructure, not a slice of it
• Real scaling challenges — bursty scraping workloads, cache invalidation, multi-region, millions of daily requests
• AI-native company — your infra directly powers AI agents used by leading companies in the space.

Key employee benefits in the US:

• Health insurance: 100% company-paid medical, dental, and vision coverage for employees and families.
• 401(k) plan: Up to 4% company match withimmediate vesting.
• Parental leave: 20 weekspaid for primary caregivers,12 weeksfor secondary caregivers.
• Remote work reimbursement: Up to $85/month for mobile and internet.
• Disability & life insurance : Company-paid short-term, long-term and life insurance coverage.

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