Senior Full Stack Engineer, People Products

Thumbtack • San Francisco, CA

3d

About The Position

Thumbtack’s Business Applications org builds internal systems, including Salesforce-centered workflows, admin tooling, and integrations. It is expanding these systems into an internal platform for AI-enabled work, with shared APIs, reusable integration patterns, and safe, auditable capabilities for business-critical actions.

The Senior Full Stack Engineer will help build and expand products for Thumbtack’s People team, including personalized guidance, proactive support, and connected workflows that can complete approved actions. The role involves working with sensitive information such as performance, feedback, organizational structure, and hiring data. The engineer will own the end-to-end design of products’ identity, authorization, model-access, retention, and audit capabilities, building on and extending identity-aware infrastructure.

The engineer will collaborate with People Products & Data, TPMs, HR systems analysts, data scientists, data engineers, and other partners, while contributing to the Business Applications platform. They will own work across the stack, from React and TypeScript through service code and data models, and help set technical direction with non-engineering partners.

Requirements

• At least 5 years of professional software engineering experience, including owning systems end to end from an ambiguous problem to production.
• Strong full-stack skills, including React and TypeScript on the frontend and solid backend engineering.
• Working knowledge of relational and non-relational data stores such as Postgres and DynamoDB, or similar.
• Sound judgment with sensitive data, including authentication and authorization, least-privilege access, auditability, and privacy-aware design.
• Experience building internal tools or business systems, such as people, sales, marketing, finance, or operations tooling, and integrating with SaaS platforms through their APIs.
• Product judgment to assess workflows, decide what to build, and determine what to cut.
• Comfort operating with a high degree of autonomy as the primary engineer on a product area.
• Track record of raising the technical bar for people around them.

Responsibilities

• Take early People products to production and develop them into a suite of experiences spanning standalone products, plugins, and everyday tools, moving from answers and insights to personalized guidance, proactive support, and approved actions.
• Redesign workflows across Workday, Ashby, and other systems, including workflows from approved headcount to open requisition and from accepted offer to onboarding.
• Build APIs and connectors, including MCP connectors, that let AI tools safely access relevant context and complete workflows on users’ behalf.
• Design permissioning for confidential People data, including identity, person-level authorization, information shared with models, retention, approvals, and audit.
• Partner with People Products & Data on instrumentation and AI evaluations to measure quality, enforce boundaries, and improve products.
• Create reusable building blocks that enable People team members to safely build simpler tools themselves.
• Own shipped products across the stack, from React and TypeScript through service code and data models.
• Set technical direction with non-engineering partners by shaping ambiguous problems, pushing back on scope, and proposing simpler approaches.
• Operate as the primary engineer for a product area and raise the technical bar for colleagues.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed