Build AI-native software in Toronto as a Senior Full Stack Software Engineer, using React, Next.js, Node.js, and PostgreSQL onsite.
At SalesJack, you will own major product surfaces from customer discovery through production delivery. You will shape architecture, make product decisions, and ship daily with AI coding agents. The work spans LLM-powered features, durable workflows, authentication, and multi-tenant systems.
Key Responsibilities: Own features from problem discovery through iteration
Build across Next.js, Node.js, BullMQ, and PostgreSQL
Design LLM features with evaluations, guardrails, and budgets
Operate authentication, authorization, and multi-tenant RBAC
Set engineering standards and mentor engineers
Requirements: Eight to ten years of full stack experience
Deep React and Next.js expertise
Solid Node.js and advanced PostgreSQL experience
Production AI agent and LLM feature experience
Hands-on AI coding agent workflow experience
Apply senior full stack judgment across AI development, product architecture, and production software at SalesJack in Toronto.