We’re looking for a Principal Engineer to help shape the architecture and technical direction of Lightspeed’s Retail Point of Sale experience—the software merchants rely on to run their stores, serve their customers, and keep their businesses moving. You’ll personally contribute to the most important technical problems while raising the quality of engineering across Retail through clear technical leadership, strong judgment, and practical mentorship. You’ll help us build software that works in the real world: across devices, hardware, networks, payments, inventory, and the many edge cases that make retail challenging.

You’ll bring a systems perspective to complex problems while staying close enough to the work to understand the details and help teams deliver. Setting and communicating the architectural direction for key areas of Retail Point of Sale. Helping teams design reliable experiences across checkout, hardware, network connectivity, payments, sales, inventory, and order workflows.

Leading architectural deep-dives and identifying opportunities to simplify systems, reduce duplication, improve performance, and lower operational risk. Driving improvements in reliability, availability, latency, and recovery—especially in the moments that matter most to merchants and their customers. Identifying recurring sources of incidents, customer pain, and non-project overhead, then creating practical plans to address them.

Establishing and evolving engineering practices across design, testing, deployment, observability, incident management, and technical decision-making. Partnering with Product, Design, Support, and other engineering leaders to turn ambiguous business and customer problems into sound technical direction. Mentoring senior engineers and technical leaders, helping them grow their scope and make better decisions independently.





Creating alignment across teams without relying on formal authority, and making thoughtful trade-offs between immediate delivery and long-term platform health. Contributing to the wider Retail Engineering organization wherever your experience can create leverage. Significant experience designing and building business-critical software systems in production.

A track record of technical leadership across multiple teams or a broad product area.

Experience building and operating cloud-based systems with strong expectations for reliability, security, and performance. Strong systems-thinking skills, with the ability to move between product intent, architecture, implementation details, and operational reality.

Experience working across more than one technology stack or technical layer. Our setting includes backend services, web and mobile clients, data stores, APIs, event-driven systems, and infrastructure. The judgment to moderate technical conversations, navigate disagreement, and move groups toward decisions.

Experience building point-of-sale, commerce, ecommerce, payments, inventory, or other transaction-heavy systems. Deep experience with distributed systems, offline-capable software, multi-region systems, or high-availability platforms.

Experience working with hardware integrations, payment terminals, peripherals, or environments with unreliable network connectivity. Strong understanding of domain-driven design, event-driven architecture, data consistency, and migration strategies.





Experience leading technical work across web, backend, mobile, and platform teams.

Experience with people management or formal technical leadership responsibilities. You care deeply about the customer and understand that technical decisions should make merchants’ work simpler and more dependable. You know when to invest in the foundation and when to make a focused trade-off to keep moving.

You are comfortable being accountable for outcomes that extend beyond your immediate team. You are a generous technical partner who makes the people around you stronger. As a global company with employees and clients outside of Quebec, fluency in English as a working language is required for this position.

We invest in you with continuous learning opportunities, global mobility and benefits designed to support you—all within a driven, diverse and inclusive team that’s passionate about empowering our communities Please note that we ask applicants to disclose any criminal convictions, and we conduct criminal record checks as part of our hiring process for this role. Lightspeed welcomes and encourages applications from people with disabilities. Accommodations are available on request for candidates taking part in all aspects of the selection process.

Powering the businesses that are the backbone of the global economy, Lightspeed's one-stop commerce platform helps merchants innovate to simplify, scale, and provide exceptional customer experiences. Our cloud commerce solution transforms and unifies online and physical operations, multichannel sales, expansion to new locations, global payments, financial solutions, and connection to supplier networks. With teams across North America, Europe, and Asia Pacific, the company serves retail, hospitality, and golf businesses in over 100 countries.

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