Senior Software Engineer, Backend (Partner Merchant Interface)

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

Description:

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Software Engineer, Backend (Partner Merchant Interface) based in Canada .

This role sits within a fast-paced engineering team responsible for the APIs that partners and merchants use to integrate with a modern financial platform. You will contribute to backend systems that support integrations with major global partners and high-volume commerce experiences. The position offers the opportunity to design, develop, and launch scalable distributed systems that directly support business growth. You will collaborate closely with engineers and stakeholders to balance delivery speed, reliability, and long-term technical quality. Your work will involve navigating complex systems, solving multi-component technical challenges, and maintaining resilient production services. The environment emphasizes ownership, continuous learning, clear communication, and strong engineering practices.