Top Tech Jobs & Startup Jobs in NYC, NY

Work with customers to co-design, build, deploy, and operate production AI agents. Lead technical pre-sales, design POCs, run demos and workshops, advise post-sale on architecture and best practices, contribute reusable patterns and occasional upstream code. Role requires frequent customer engagement and 40% travel.

Lead the technical architecture and implementation for LangSmith, collaborating with teams, mentoring juniors, and ensuring code quality.

The Full Stack Engineer will develop and implement features for the LangSmith platform, collaborate with teams, ensure high coding standards, and engage with enterprise customers.

Build full‑stack growth and monetization features across React, TypeScript, Go/Python backends. Implement experimentation systems, onboarding improvements, usage metering, subscription and billing integrations, and growth levers. Partner with product, design, GTM, and analytics to run data‑driven experiments that accelerate adoption, activation, and revenue.

Own and govern the end-to-end marketing tech stack and campaign operations: roadmap, integrations, tracking, tag management, data flows, and reporting. Build AI-powered automations and operational tooling, ensure data hygiene, and support ABM and PLG initiatives through signal and workflow design.