Sr. Software Engineer

About the Company

SQA Canada Inc is a forward-thinking technology company specializing in quality assurance, software engineering, and fintech solutions. They collaborate with clients building cutting-edge financial systems, particularly in cross-border payments, to make global business transactions faster, cheaper, and more efficient. Their mission is to develop secure, protocol-driven infrastructure for modern payment platforms, minimizing reliance on traditional financial intermediaries and complex multi-vendor stacks.

About the Role

Our client is developing the next generation of cross-border payment infrastructure designed to process transactions at a fraction of traditional blockchain costs. The platform enables near-instant settlement on Layer 1 without relying on complex multi-vendor stacks or smart contracts.

This role is ideal for engineers who want to work close to the protocol layer, design distributed systems handling real financial value, and build tooling from the ground up. You will help design and build the core infrastructure powering a modern payment protocol.

Key Responsibilities

• Design and build backend systems for protocol-level payment infrastructure

• Integrate directly with blockchain protocols via RPC interfaces

• Develop custody architecture and secure financial transaction systems

• Build internal tooling and developer infrastructure for a new protocol ecosystem

• Collaborate with protocol engineers to understand system behavior

• Contribute to distributed systems design for secure financial operations

• Ensure high reliability and security for systems handling real financial assets

Technology Stack

• Go (Golang)

• PostgreSQL

• Direct Blockchain RPC integrations

• Protocol-level development and distributed systems design

Qualifications

• Strong experience with Go, distributed systems, or backend infrastructure

• Solid understanding of databases (PostgreSQL or similar)

• Experience building high-reliability backend systems

• Ability to work with low-level systems or protocol code

• Comfortable reading complex codebases (C++ or similar languages)

• Strong problem-solving ability in environments with limited documentation

Nice to Have:

• Experience with blockchain protocols or crypto infrastructure

• Knowledge of cryptography, multi-signature systems, or custody architectures

• Experience building financial or payment systems

• Background in distributed systems engineering

Contract Details

• Job Type: Full-time, Fixed-term Contract

• Contract Length: 12 months

• Pay: $130–$200 per hour

• Work Location: Remote