Senior Software Engineer

Questrade Financial Group; Canada; Hybrid; CAD 100,000 - 130,000; Full time

Benefits offered by this job

RRSP matching up to 6%

Mental health coverage up to $5,000

Tuition subsidies $5,000 per year

100% parental top-up, 26 weeks/18 for…

Hybrid work environment with 3 days in

Paid vacation, personal, and sick days

Community care day

Job summary

Questrade Financial Group is seeking a Senior Software Engineer to own domain end-to-end in a .NET backend and Angular frontend on a GCP-based microservices platform.

You will drive architecture decisions, implement REST APIs, and champion testing, observability, and scalable design in a regulated financial services context.

Qualifications

• 5+ years of senior-level experience building backend REST APIs in .NET/C# in production.
• Strong expertise in Domain-Driven Design (DDD), Event Sourcing and CQRS.
• Experience with distributed microservices in cloud environments (preferably GCP) and NoSQL databases.
• Proficient in asynchronous Pub/Sub and synchronous HTTP integration.
• Frontend exposure with Angular or TypeScript; testing, CI/CD, and observability.

Responsibilities

• Own domain end-to-end including architecture decisions, code reviews and incidents.
• Lead design reviews and contribute to cross-team architectural decisions.
• Build and maintain production-grade REST APIs using .NET/C# across services.
• Drive technical debt reduction while balancing delivery and maintainability.
• Champion testing standards with unit/integration tests; ensure observability.
• Manage incidents end-to-end; leverage DataDog for monitoring and tracing.
• Advise on architectural patterns like CQRS, DDD, and event-driven design.

Tools

.NET

Angular

GCP

CQRS

Event Sourcing

DDD

Pub/Sub

HTTP REST

DataDog

GitLab

Playwright

Cypress

Job description

• Backend: .NET


• Cloud: Google Cloud Platform (GCP)

Questrade is on a mission to help Canadians to become much more financially successful and secure. For nearly 30 years, Questrade Financial Group has been delivering on that mission through investing, banking, mortgages, and real estate. Together, we tilt finance in favour of ambitious Canadians, creating new ways for them to seize the financial future they deserve.

We're looking for people who are ready to enter their career inflection point. Mission-driven, exceptional folks that never settle. The work here is hard because the responsibility is real. If that's the standard you've been looking for, keep reading.

Req # 4219

The return on your career investment

• Compensation and incentives built to reward the value you bring.


• RRSP matching of up to 6%.


• Health and wellness resources and programs, including $5,000 in mental health practitioner coverage.


• $5,000 in tuition subsidies for job-related courses, every year.


• 100% parental top-up, up to 26 weeks for birthing parents and 18 weeks for non-birthing parents.


• A hybrid environment, with at least three days in the office built for working together.


• Paid vacation, personal, and sick days.


• A community care day to give back to the causes you care about.

This job posting is for an existing vacancy.

We’re looking for our next Senior Software Engineer

We're building the next-generation Loan Origination System for Questbank's Secured Lending business — a distributed, event-sourced platform that powers how we take a loan from application to funding. It's a microservices architecture on Google Cloud Platform (GCP), designed from the ground up with Domain-Driven Design, Event Sourcing, and CQRS.

As a Senior Software Engineer on this team, you'll be a senior individual contributor who owns a domain end to end — from technical decisions, architecture, and code reviews to production incidents. You'll work across a .NET backend and an Angular frontend, shaping the technical direction of your domain and influencing architecture decisions across services. Operating in a complex, regulated financial services and mortgage servicing environment, curiosity about business context matters as much as technical skill: we need someone who thinks like an owner, understands the business problem behind the ticket, and helps shape the product rather than just executing work.

The mandate

In This Role, You Will

• Own your domain end-to-end, taking direct accountability for architecture decisions, technical quality, code reviews, and production incidents.


• Own the technical architecture within your domain — leading design reviews and contributing to cross-team architectural decisions


• Build and maintain production-grade REST APIs using .NET and C#; work across the stack including micro frontend components where needed


• Drive resolution of technical debt while balancing short-term delivery with long-term maintainability


• Champion testing standards and helping define the team's test culture — unit and integration tests are expected, not optional


• Own incidents and production issues end-to-end; using DataDog and observability tooling as standard practice


• Serve as the reference point for architectural patterns like CQRS, DDD, and event-driven architecture — expected to evaluate and introduce tooling where there's clear benefit

You’re ready for this mandate if you have the following qualifications

• Have 5+ years of senior-level experience building backend REST APIs in .NET and C# in production.


• Have strong expertise in software design principles and patterns, including Domain-Driven Design (DDD), Event Sourcing, and CQRS.


• Have experience architecting and delivering distributed, microservices-based systems with cloud infrastructure (ideally GCP) and NoSQL/MongoDB databases.


• Are proficient in both asynchronous (Pub/Sub messaging) and synchronous (HTTP/REST) integration patterns.


• Have frontend development experience with Angular or TypeScript (exposure to micro frontend architecture is a plus).


• Are committed to quality with a strong track record of writing unit, integration, and automated tests as part of regular delivery.


• Have hands-on production support and observability experience, including CI/CD workflows (GitLab) and monitoring tools (DataDog).


• Have a product and business mindset: curiosity about business context in a complex, regulated domain (financial services / mortgage servicing) and the ability to clearly articulate technical and architecture decisions.


• Are familiar with AI-assisted dev tools (GitHub Copilot, Claude, etc.) — the team actively uses these


• Technical stack at a glance
  
  
  
  • Backend: .NET
  
  
  • Frontend: Angular
  
  
  • Cloud: Google Cloud Platform (GCP)
  
  
  • Architecture: Distributed microservices, Domain-Driven Design, Event Sourcing, CQRS
  
  
  • Communication: Async (Pub/Sub), Sync (HTTP)
  
  
  • Testing: Automated tests across the stack; Playwright / Cypress an asset
  
  
  
  

Nice to have

• Experience with Playwright and/or Cypress for end-to-end testing.


• Experience in financial services, fintech, lending, or mortgage/secured-lending domains.


• Experience in Micro frontend / module federation.

The final compensation package will be commensurate with the successful candidate's experience, skills, and geographic location (Canada). It includes a comprehensive benefits plan and a competitive incentive (bonus) program for Full-Time Permanent roles.

Base salary range

$100,000 - $130,000 CAD

Technology and AI

We mix human ingenuity with advanced technology. For ambitious builders like you, we provide the latest technology to enable your creativity. You'll have everything you need to build the best outcomes and products for our clients.

Diversity and Inclusion

At Questrade Financial Group of Companies, we’re committed to fostering a diverse, inclusive, and accessible work environment where individuals are treated with dignity and respect. Our global team reflects the diversity of the communities we serve and operate in.

Accessibility statement

Candidates selected for an interview are contacted directly. If you require accommodation during the recruitment or selection process, please let us know. We will work with you to meet your needs.

AI in hiring

Questrade Financial Group of companies Applicant Tracking System uses artificial intelligence (AI) for application screening. The AI system operates on predetermined criteria, with final decisions subject to human review.