Senior Back-end Engineer

Adastra Corporation

markham, on, Canada
Full-time
Posted May 31, 2026

Job Description

Overview We are looking for a Senior Back‑end Engineer to design and build scalable, secure, and high‑performance backend systems that power modern SaaS applications. In this role, you will lead the architecture and development of .NET‑based microservices, define APIs that align with frontend workflows, and contribute to cloud‑native solutions on Azure. You will work closely with cross‑functional teams to deliver reliable backend services that support real‑time user experiences, AI‑driven capabilities, and enterprise‑grade platforms.

Primary Location:

Across Canada or USA

Work Model:

Fully Remote

Employment Type:

Contractor

Vacancy Status:

New

RESPONSIBILITIES

Design and implement scalable backend architectures supporting frontend SaaS applications using .NET microservices

Define and maintain API contracts aligned with frontend workflows and UI data requirements

Lead the design o...