Senior Backend Engineer – Scalable APIs for Partner Platform

Triwill Group; Canada; Hybrid; CAD 110,000 - 170,000; Full time

Job summary

Triwill Group in Canada seeks a Senior Software Engineer, Backend (Partner Merchant Interface) to design, develop, and operate backend services powering partner and merchant integrations on a modern financial platform.

You will own critical APIs, contribute to scalable distributed systems, and collaborate with engineers and stakeholders to balance rapid delivery with reliability and long-term quality.

Qualifications

• Experience designing and building backend APIs.
• Experience with distributed systems and high-volume services.
• Ability to collaborate with engineers and stakeholders.
• Strong ownership and engineering practices.

Responsibilities

• Design, develop, and launch scalable distributed backend systems.
• Build and maintain APIs used by partners and merchants.
• Collaborate with engineers and stakeholders to balance speed and long-term quality.
• Maintain production services with reliability and observability.

Skills

Backend development

APIs

Distributed systems

Collaboration

Ownership

Communication

Job description

Triwill Group in Canada seeks a Senior Software Engineer, Backend (Partner Merchant Interface) to design, develop, and operate backend services powering partner and merchant integrations on a modern financial platform.

You will own critical APIs, contribute to scalable distributed systems, and collaborate with engineers and stakeholders to balance rapid delivery with reliability and long-term quality.