Skip to content
Inkeep

Member of Technical Staff, TypeScript Engineer (Principal)

Principal TypeScript engineer owning end-to-end platform features for AI agent building, from API design and SDKs to UIs. Requires 4+ years TypeScript experience, full-stack fluency, system design skills, and high ownership.

180k – 250kNew York, NYSan Francisco, CAFullstack EngineeringOnsite4+ YOE
Apply

About the role

Responsibilities

  • Own platform features end-to-end: architect, build, and maintain critical systems that customers depend on.
  • Lead technical and team direction: serve as a leader and resource.
  • Shape the developer experience: design APIs, SDKs, and tools that developers love to use.
  • Build at the frontier and in public: work on cutting-edge agentic systems and contribute to open source.
  • Influence product direction with technical and product insights.
  • Work directly with customers to understand AI agent building and design solutions.

Requirements

  • Strong TypeScript expertise: 4+ years building full-stack products with TypeScript, deep understanding of end-to-end web fundamentals.
  • System design skills: architect APIs and systems that are elegant, scalable, and developer-friendly.
  • Product thinking: care about end-user experience and how people use what you build.
  • Full-stack fluency: comfortable working across the stack, from APIs to SDKs to UIs.
  • High ownership: own problems end-to-end.

Nice-to-Haves

  • Experience building with AI (prompts, evals, RAG, agentic workflows, etc.).
  • Background in developer tools or B2B SaaS products.
  • Open source contributions or public projects.
  • UX or design sensibility.

Skills

TypeScriptAPIsSDKsSystem DesignFull-StackJavaScriptReactNode.jsAI AgentsRAG

Similar roles

Fullstack Engineering jobs
ZoomInfo

Senior Principal Software Engineer

Architects scalable infrastructure for ZoomInfo's unified data platform using GraphQL federation across BigTable, BigQuery, and Solr. Drives real-time data processing, observability, and multi-tenant systems with 12+ years experience in distributed data platforms.

191k – 300kCaliforniaFullstack EngineeringRemote12+ YOEGoGCP
ZoomInfo

Principal Software Engineer

Principal engineer owning full-stack features on Mesh, ZoomInfo's internal AI platform. Builds AI agents, workflows, microapps, and SDKs while mentoring engineers and maintaining production reliability.

164k – 257kUnited StatesFullstack EngineeringRemote12+ YOEGCPLLMs
ZoomInfo

Principal Software Engineer

Designs and builds distributed systems, high-performance APIs, and LLM-powered features for ZoomInfo's real-time B2B marketing platform. Requires 5+ years in backend/data engineering with expertise in distributed systems, big data, or applied AI/ML.

164k – 257kWaltham, MAFullstack EngineeringHybrid5+ YOEGoSQL
Titan

Principal Full Stack Engineer – Web & Mobile

Principal Full Stack Engineer builds and maintains end-to-end customer-facing features across React web and React Native mobile apps, integrating backend APIs and optimizing performance. Requires 6+ years experience, expertise in JS/TS, React, React Native, and cross-functional collaboration.

150k – 300kNew York, NYFullstack EngineeringOn-site6+ YOEReactREST APIs
Gusto

Principal Software Engineer - Pay Group Engineering

Leads end-to-end projects improving Gusto's payroll/tax platform for scalability and compliance. Requires 15+ years experience scaling Ruby/Rails & TypeScript/React apps, system design expertise, and AI/ML knowledge.

215k – 295kDenver, CO +3Fullstack EngineeringHybrid15+ YOEAIReact