Senior Full Stack Developer

Lightspeed Commerce, Inc.•Calgary, AB

2d•Hybrid

About The Position

The Invoicing team, part of the Financial Services group at Lightspeed, is responsible for designing and delivering solutions that support sales and pre-sales flows, as well as managing customer accounts receivable operations. This team plays a key role in enabling seamless financial processes that drive business growth and ensure a reliable experience for customers. In this role, the Senior Software Developer will be responsible for the development and maintenance of various features within mission-critical financial products. They will contribute to the codebase for new features or bug fixes, help improve the architecture, and engage in other related activities. The role requires strong technical expertise, a proactive approach to helping the team achieve goals, evolving team processes and tooling, and active participation in production operations, including on-call rotations. The company is only accepting applications from candidates across Canada. Fluency in English is required as a working language.

Requirements

Strong software engineering and computer science fundamentals like data structures and algorithms
A minimum of 6 years of experience working as a Software Developer
Experience working for a Saas product based company
Proven, extensive expertise in designing and architecting complex, event-driven distributed systems, with significant experience in microservices and reliable data pipelines, preferably within the Financial Services domain
Experience in JavaScript, Golang, TypeScript or similar languages
Experience building and maintaining customer facing UIs using React, Angular or other JavaScript frameworks
Understanding of containerized application development and management using Kubernetes, Docker or similar tools
Experience with data management and storage technologies such as Redis, Google Cloud Datastore, Elasticsearch or similar tools
Experience with AI development tools such as Claude Code, Cursor, and/or equivalent technologies
Proven experience developing scalable, reliable applications on the cloud (AWS/GCP)
Experience designing and setting up advanced monitoring systems and championing the overall observability culture
Experience leading initiatives and feature work from system design to production deployment
Strong sense of ownership and self-improvement, with a growth mindset
Passion for software development and a customer-focused mindset
Team player always working towards the overall team’s success
Understanding the need for constant improvement, self-growth, and accountability
Willingness to step up to solve problems for the business
Ability to set ambitious goals, and act with a sense of urgency and focus
Act as a vigilant steward of the codebase and technical processes, actively raising the bar

Responsibilities

Drive strategic collaboration in development planning, retrospectives, and demos
Lead the system design and architecture for new, large-scale features, ensuring solutions are robust, scalable, and maintainable
Break down high-level requirements into well-defined development tasks and work items
Manage and communicate expectations, priorities, release status, and project schedules to stakeholders and the team
Lead effort estimation for sprint and product roadmap deliverables
Champion continuous improvement of our software delivery processes and practices
Actively mentor and coach team members, identifying areas for growth and career development
Shape the future of the engineering workforce by actively participating in the recruitment process
Provide technical and process guidance
Elevate coding standards and best practices by conducting rigorous code reviews in a knowledge-sharing environment
Continuously improve our existing tools and products to ensure technological advantage