Senior Full-Stack Engineer: AI-Powered Internal Platform

Zim Directory; Toronto; On-site; CAD 180,000 - 233,000; Full time

Job summary

Thumbtack is seeking a senior software engineer to help build and scale internal People tools and AI-enabled workflows. You will own end-to-end features, redesign cross-system processes, and create safe, auditable data access patterns.

Key responsibilities include building with React/TypeScript on the frontend and Go/Python/PHP on the backend, plus working with databases like Postgres and DynamoDB. This role requires autonomy and strong product judgment.

Qualifications

• 5+ years of professional software engineering experience, owning systems end to end from ambiguous problem to production.
• Strong full-stack skills: React and TypeScript on the frontend, solid backend engineering using Go, PHP, and Python.
• Working knowledge of relational and non-relational data stores (Postgres, DynamoDB, or similar).
• Sound judgment with sensitive data: authentication, authorization, least-privilege access, auditability, and privacy-aware design.
• Experience building internal tools or business systems and integrating with SaaS platforms via APIs.

Responsibilities

• Take early People products to production and grow them into a suite of experiences across standalone products, plugins, and everyday tools.
• Redesign workflows across systems from approved headcount to open requisition and onboarding.
• Build APIs and connectors to let AI tools access context and complete workflows on users' behalf.
• Design the permissioning model for confidential People data including identity and audit.
• Partner with teams on instrumentation and AI evaluations to measure quality and enforce boundaries.
• Create reusable building blocks for safer, self-service tooling by People team members.
• Own what you ship across the stack, from React/TypeScript UI to service code and data models.

Skills

Full-stack development

React

TypeScript

Go

PHP

Python

Relational databases

Data privacy principles

Tools

PostgreSQL

DynamoDB

Job description

Thumbtack is seeking a senior software engineer to help build and scale internal People tools and AI-enabled workflows. You will own end-to-end features, redesign cross-system processes, and create safe, auditable data access patterns.

Key responsibilities include building with React/TypeScript on the frontend and Go/Python/PHP on the backend, plus working with databases like Postgres and DynamoDB. This role requires autonomy and strong product judgment.