Senior Backend Engineer (Node.js / Python)

Apex Digital — Toronto, Ontario

Full-time · $105,000 - $130,000 / yr

Apex Digital is scaling our B2B SaaS platform. You will own the backend architecture — APIs, data pipelines, and performance.

Responsibilities:

- Design and implement RESTful and GraphQL APIs

- Optimize PostgreSQL schemas and query performance

- Lead code reviews and mentor junior engineers

- Drive observability: metrics, logging, alerting

Skills