Senior Software Engineer

Overview

L3

Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers’ mission and quest for professional growth. L3

Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do.

L3

Harris is the Trusted Disruptor in defense tech. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.

Job Title: Senior Software Engineer

Job Location: Mirabel, QC or Enfield, NS

Job Code: 38488

Job Schedule: Day Shift

Compensation Range: Between $113,000 - $163,000 annually

As a Senior Software Engineer within the Software Group, you will serve as a technical authority on software engineering processes, standards compliance, and lifecycle governance across multiple defence and aviation platforms including the CF-18, CT-114, CC-330, and CC-150. You will guide development teams, ensure adherence to applicable standards, contribute to bids and proposals, and mentor the next generation of software professionals.

This role demands an individual who bridges rigorous process discipline with hands-on engineering expertise. We have offices in Mirabel, Halifax and Ottawa, hybrid work 3 days per week at the office.

• Review, critique, and approve software engineering documentation including Software Requirements Specifications (SRS), Software Design Documents (SDD), Software Verification Plans (SVP), and Software Configuration Management Plans (SCMP) for standards compliance and technical accuracy;
• Contribute technical content to Requests for Proposals (RFPs); assess feasibility, estimate effort, define process tailoring strategies, and articulate standards compliance approaches to clients and evaluators;
• Coach and develop junior and intermediate software engineers, conduct structured code and document reviews, and facilitate knowledge transfer on lifecycle processes and certification requirements;
• Perform peer reviews of software artefacts, identify deviations from plans and standards, and work with authors to resolve findings in a constructive and traceable manner;
• Maintain and oversee the Software Configuration Management (SCM) function — baseline definition, change control, configuration status accounting, and configuration audits — in accordance with ISO 12207 and project-specific SCMPs;
• Define, tailor, and improve software development processes and lifecycle models to suit project context, certification level, and contractual obligations;
• Actively participate in all phases of the software development lifecycle — requirements, design, implementation, integration, verification, validation, and maintenance — as a process authority and technical contributor;
• Liaise with clients, certification authorities (e.g., Transport Canada, DND), partners, and internal project teams to align on process expectations, compliance strategies, and technical deliverables.

• University degree in Software Engineering, Computer Engineering, Computer Science, or equivalent experience;
• 10 to 15 years of professional software engineering experience in aviation, defence, or safety-critical systems;
• Demonstrated knowledge of ISO/IEC 12207 and ISO/IEC 15288 lifecycle frameworks;
• Practical experience with DO-178C software development at any Design Assurance Level;
• Experience authoring or reviewing lifecycle plans (including certification plans), SRS, SDD, SVP, and Reports documents;
• Proficiency with .NET technologies (Framework, Core, ASP.NET, Blazor) or equivalent stack;
• Experience with SCM tools (Azure Dev Ops, Git, Clear Case, or equivalent) and formal SCM processes;
• Ability to lead or facilitate formal software reviews (inspections, walkthroughs, peer reviews);
• Experience contributing to technical bids, RFP responses, or contract proposals;
• Knowledge of relational databases (Oracle, SQL…