# Senior Product Engineer - US

**Company:** [Coefficient](https://hotfix.jobs/companies/coefficient)
**Location:** San Mateo, CA
**Role:** Fullstack Engineering
**Salary:** $150k – $250k/yr
**Experience:** 6+ years
**Skills:** TypeScript, React, Next.js, Node.js, Python, Flask, Distributed Systems, APIs, System Design
**Posted:** 2026-04-01

> Builds core systems for an agentic data intelligence platform, including AI agents that reason over company data, execute workflows, and generate outputs. Requires 6+ years experience across fullstack web development with focus on data-intensive apps and ownership from idea to production.

## Job Description

## Responsibilities
- Work directly with founders to define product direction, build core systems, and ship end-to-end experiences.
- Take full ownership of problems from idea to production.
- Build autonomous AI agents that develop context, explore data, surface insights, execute workflows, make decisions, and generate outputs like reports, dashboards, spreadsheets, and scripts.

## Requirements
- 6+ years of experience building production web applications.
- Experience with modern web stacks (e.g. TypeScript, React, Next.js or similar).
- Experience with backend systems and APIs (e.g. Node, Python, Flask or similar).
- Comfortable working with data-intensive applications and distributed systems.
- Ability to pick up new technologies quickly and move across the stack.
- Solid understanding of performance, system design, and scalability.
- Experience building and shipping production systems.
- Relentlessly curious, think from first principles, move quickly, thrive in ambiguity.

## Nice-to-Haves
- Strong focus on product quality, UX, and craft.

## Compensation & Benefits
- Salary range: $150,000-250,000 (San Francisco Bay Area).
- Medical, Dental and Vision Insurance.
- Unlimited PTO.
- Parental Leave.
- 401K Plan.

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**Canonical:** https://hotfix.jobs/jobs/b4b86dcc-986f-4f95-a81b-49e6ec75f834