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MarshallZehr Group Inc.

Senior Software Developer

Waterloo, ON, Canada

$135,000 to $165,000 CAD / year · Full-time

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Job details

Pay: $135,000 to $165,000 CAD / year
Job type: Full-time
Apply by: Nov 19, 2026
Experience: 5+ years of professional software development experience, including at least two at a senior level.
Posting language: English
Posted: Oct 20, 2026

Original job description

Senior Software Developer

Who Is MarshallZehr?

MarshallZehr Group Inc. (“MZ”) provides customized construction and development financial solutions for high-performing real estate developers. Since 2008, MarshallZehr has grown to become one of Canada’s most trusted real estate capital partners. We add value beyond capital – our team’s decades of experience help deliver the strategic insight and vision necessary to craft tailored financial solutions, all backed by our industry-recognized mortgage administration services. MarshallZehr has deployed over $4.5B in capital since inception, across more than 500 projects.

The Opportunity

As Senior Software Developer, you will own MarshallZehr’s in-house mortgage administration platform, Navigator. Navigator is one of MarshallZehr’s key strategic advantages. Staff who joined us from larger Canadian lenders tell us Navigator does more for them than the systems they used there – not because those firms lack resources, but because Navigator is built precisely for how MarshallZehr works.

We have been modernizing Navigator’s foundations and integrating it deeply into our document management, finance, and CRM systems (Box, NetSuite, and HubSpot). In recent months we rewrote our mortgage valuation algorithm for an 11x speed-up, cut a three-day monthly invoice process to half an hour, and halved our build times.

We’ve also been shipping AI-enabled features: a document audit that took our staff three hours now runs in 10 minutes on Box AI, and we have the evals to show it is just as effective. Our goal is a funding process that moves seamlessly between people and AI across dozens of staff, hundreds of documents, and millions of dollars.

You will be responsible for the full development lifecycle, working with staff to identify new opportunities to improve Navigator, designing and architecting solutions, writing the code, reviewing and verifying changes, and shipping into production. This means collaborating with stakeholders throughout MarshallZehr, leading technical design sessions, mentoring your fellow developer, and contributing to our roadmap.

We believe that AI is fundamentally changing how software is built. The traditional division between product, engineering, and QA is giving way to builders who can take ideas from concept to production in days rather than months. We are not there yet; closing that gap is a large part of this job. You put the outcome first and use whatever gets you there: working with stakeholders to understand the problem, prototypes to design a great user experience, agentic tools to build and verify your code, and your strong engineering principles to ensure the platform remains stable, maintainable, and secure.

You will report to MarshallZehr’s CTO and work alongside one other developer. This is a permanent, full-time, hands-on role: you will write code every day.

Navigator is built on .NET 10, Angular 21, and SQL Server. It runs on AWS ECS, with the Grafana Cloud LGTM stack giving us insight into every facet of Navigator’s operations. We use GitLab for project planning, source code management, and CI/CD.

The Role

As Senior Software Developer, you will:

Develop software in .NET, Angular, and other languages/frameworks.
Lead projects end-to-end to make Navigator a better, more capable tool for our staff.
Interview staff and other stakeholders to prototype and design improvements tailored to how MarshallZehr works, so our team can work more efficiently and accurately.
Incorporate industry best practices into technical designs and Navigator’s overall architecture to ensure its reliability and security, and to provide a great developer experience.
Write and maintain automated tests to ensure that we can confidently ship our changes without regressions.
Use a mix of automated and manual code review to ensure that changes made by others have the right outcome and solve the business problem (they’ll do the same for you).
Use AI throughout your development process to better specify, better develop, and better test your changes, and contribute back to our shared skills and context to make the whole team better.
Work closely with MarshallZehr’s CTO to continuously evolve our AI-assisted development lifecycle as new tools, techniques, and models become available.
Collaborate with leaders and staff to deliver our development roadmap, ensuring that we build the right features in the right order.
Prioritize and tackle technical debt to maximize the stability, extensibility, and functionality of Navigator without stalling delivery.

What Are We Looking For?

Strong back-end and front-end experience in a comparable modern stack. You do not need to arrive fluent in our .NET/Angular/SQL Server stack, but you do need to be productive in it quickly.
Computer Science, Engineering, or related degree/diploma is preferred; we will also consider candidates with equivalent practical experience.
5+ years of professional software development experience, including at least two at a senior level.
Experience across every stage of the development lifecycle, not just writing code.
Hands-on experience using an agentic coding tool (Claude Code, Codex, Cursor, Kiro) on an existing codebase, with enough mileage to know where it performs well, where it does not, and which techniques get good results.
Strong code review skills – you find the defects that tests and other reviewers miss, and you give feedback people can act on.
A track record of making the developers around you better.
Experience improving software architecture for scalability, testability, and maintainability.
Experience with CI/CD systems and how to use them to accelerate development.
Experience with Docker and/or a managed container service such as AWS ECS.
Working knowledge of running web services in production – hosting, monitoring, logging, configuring servers, cloud services.
Working knowledge of user experience – empathy for users and an ability to turn requirements into working software.
Comfortable working in a fast-paced environment while navigating ambiguity.
Ownership of your own success – you dive in and solve problems without hesitation, and don’t need constant direction.
Strong communication skills, both written and oral – you know how to advocate for your ideas.
An appetite for critique – you view code reviews, retrospectives, and feedback both as a great learning opportunity and a way to share your knowledge with others.

What MZ Offers

Opportunities for career development and advancement as the organization grows.
A USD $250/month budget for AI coding tools.
Employer-paid benefits, including medical, dental, and a health care spending account.
RRSP matching program.
Paid vacation and company floater holidays.
Creative Social Committee that organizes regular team-building events.
Free on-site parking.

Work Environment

MZ offices are open Monday to Friday and employees are expected to work on site a minimum of 4 days per week, with the option of working remotely 1 day per week, as agreed to by the direct supervisor.
No on-call. Navigator is used by staff during business hours, and our IT team responds to anything that comes up off-hours.
Our Waterloo office has 16,000 square feet of modern and accessible space and has been specially updated and tailored to meet our business needs. The result is a world-class workspace that empowers deep collaboration, reinforces business operations with state-of-the-art technology infrastructure, and offers more space to enable our sustained team expansion. We also have a satellite office in downtown Toronto, available for business meetings.

Salary Range

CAD $135,000 – $165,000

Interested individuals can apply directly by visiting www.marshallzehr.com/careers

This posting is for an existing vacancy.

AI may be used during MZ’s hiring process to screen, assess, or select applicants.

Accommodations are available during all stages of the recruitment process in accordance with the Human Rights Code and the Accessibility for Ontarians with Disabilities Act (AODA), to provide an inclusive, barrier-free workplace. We will accommodate the accessibility needs of individuals with disabilities to support participation in all aspects of the recruitment process. Should you require this accommodation, please contact careers@marshallzehr.com.

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More about this job

Responsibilities

Own and improve the Navigator mortgage administration platform by leading development projects from stakeholder discovery and technical design through implementation, testing, review, and production release. Collaborate with the CTO and staff to evolve the roadmap and AI-assisted development practices, mentor another developer, and maintain the platform’s reliability, security, and maintainability.

Requirements

Candidates need 5+ years of professional software development experience, including at least 2 years at a senior level, strong front-end and back-end experience, and hands-on use of an agentic coding tool on an existing codebase. They should have experience across the development lifecycle, architecture, testing, code review, CI/CD, containers or managed container services, production web services, and effective stakeholder communication; a related degree or diploma is preferred, or equivalent practical experience.

Skills

.NET
Angular
SQL Server
Full-Stack Software Development
Software Architecture
Automated Testing
Code Review
AI-Assisted Development
Agentic Coding Tools
CI/CD
Docker
AWS ECS
Production Monitoring
Logging
User Experience
Technical Mentoring

Benefits

Employer-Paid Medical Benefits
Employer-Paid Dental Benefits
Health Care Spending Account
RRSP Matching
Paid Vacation
Company Floater Holidays
AI Coding Tools Budget
Career Development Opportunities
Team-Building Events
Free On-Site Parking

Visa sponsorship

Not detected in the job text

Keywords

.NET 10
Angular 21
SQL Server
AWS ECS
Grafana Cloud LGTM
GitLab
Box
NetSuite
HubSpot
Box AI
Claude Code
Codex
Cursor
Kiro
Agentic Coding
AI-Assisted Development
CI/CD
Docker
Mortgage Administration
Real Estate Finance
Software Architecture
Automated Testing
Code Review
Technical Debt
Production Monitoring
Logging
Cloud Services
Full Development Lifecycle
User Experience
Application Security

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