Sr. Full Stack Engineer

Location: Hybrid, 3 days/week in San Francisco, New York City, or Vancouver (relocation support available)

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About the Role
Were looking for a Senior Full-Stack Engineer to design and deliver high-impact product features and backend services that turn complex GTM data into actionable insights. You'll build intuitive user interfaces in React/TypeScript and robust APIs with Python FastAPI/GraphQL, powering seamless agent workflows. This is a hands-on role where you'll collaborate closely with Product and GTM teams, owning projects from concept to production.

What You'll Do

• Build and ship web applications with React/TypeScript, focusing on performance, UX, accessibility, and instrumentation.
• Design and implement APIs, services, and data models in Python (FastAPI/GraphQL).
• Contribute to orchestration, retrieval, and evaluation frameworks to improve agent workflows.
• Ensure production excellence by adding observability, testing, runbooks, and performance optimizations.

• Deliver integrations with CRM and sales tools to streamline user workflows.

• Lead technical design, write RFCs, review code, and mentor engineers while improving standards and tooling.

What Were Looking For

• 4+ years of full-stack development experience with measurable impact on user-facing products.

• Strong expertise in React/TypeScript and Python (FastAPI/GraphQL).

• Experience with AWS, PostgreSQL/DynamoDB, Kubernetes, Pulumi, and event-driven systems.
• Proven ability to transform multi-source data into reliable, production-ready models.

• Strong instincts around reliability, privacy, scalability, and cost optimization.

• Excellent communication skills for technical trade-offs and cross-functional collaboration.

Bonus Points For

• Experience with agent orchestration, retrieval systems, or graph-shaped data models.

• Background in eval frameworks or distributed systems.

• Previous work in AI, data infrastructure, or GTM tooling.