Markham, On Developer (software engineering manager development program) Jobs – 136 Openings This Week

Senior Software Engineer
autoTRADER.ca —Toronto, ON
- $140,000–$190,000 a year
- DevOps
- System design
- AI
- Employee assistance program
Senior Linux Software Engineer (Networking & Systems) (10138)
Extreme Networks —Thornhill, ON
- $100,000–$120,000 a year
- Full-time
- Hybrid work
- Computer Science
- Engineering
- Java
- Employee stock purchase plan
- Disability insurance
Quick apply
Power Systems Automation Engineer
SEL Schweitzer Laboratories, Inc. —Markham, ON
- Full-time
- Schematics
- Project management
- Travel
- Disability insurance
- Dental care
Quick apply
Front End Developer
Payquad Solutions —Toronto, ON
- Full-time
- Hybrid work
- Computer Science
- Engineering
- JavaScript
Quick apply

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Power Systems Automation Engineer
SEL Schweitzer Laboratories, Inc. —Markham, ON
We foster growth and development of our employees through avenues such as apprenticeships, tuition assistance, and engineering development programs.
Quick apply
Senior Linux Software Engineer (Networking & Systems) (10138)
Extreme Networks —Thornhill, ON
Familiarity with AI-driven development tools to support code implementation and review, test creation, and workflow automation.
$100,000–$120,000 a year
Quick apply

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Senior Software Engineer

autoTRADER.ca -
Toronto, ON

Apply Now

Job details

$140,000–$190,000 a year

Qualifications

React
DevOps
.NET Core
System design
.NET
AI
TypeScript

Full job description

At AutoScout24, we’re excited to be hiring for our Canadian company, Trader Corporation — a key part of our international family.

As the Canadian arm of Europe’s largest online car marketplace, Trader Corporation plays a vital role in transforming how people buy, sell, and finance vehicles. With well-known brands like AutoTrader.ca, AutoSync, and Dealertrack Canada, Trader Corporation is driving digital innovation in the automotive industry — now reaching over 25 million Canadians every month.

This role will be within the Dealertrack Canada team, the country’s leading automotive financing portal, processing over 6.5 million credit applications annually.

We’re looking for a Senior Software Engineer who takes end-to-end ownership, thrives in ambiguity, and wants to build systems that matter. This role is central to modernizing our platform so we can better detect fraud, assess risk, and move faster as a business. You’ll help shape architecture, influence technical direction, and own what you build—from design to production. The software you’ll build directly influences financial trust, fraud prevention, and risk decisions across Canada’s automotive ecosystem. Your work will have real impact at scale—and you’ll have the autonomy and responsibility to shape how it’s done.

If you’re motivated by ownership, technical challenges, and building systems that truly matter, you’ll feel at home here.

What You’ll Do:

Build & Evolve Critical Systems

Improve and extend a large, production-grade codebase with a strong bias for clean code, testing, and long-term maintainability.
Design and implement scalable, resilient solutions using modern architecture principles (modularity, clear boundaries, observability).
Modernize legacy components to unlock new capabilities in fraud detection and risk analysis.

Own Architecture & Technical Decisions

Drive architectural discussions and decisions, balancing pragmatism with technical excellence.
Set and enforce high quality bars for new services and modules, with a focus on testability, performance, and reliability.
Identify and reduce technical debt in ways that measurably improve developer velocity and system robustness.

Build With an Ownership Mindset

Work across the full software lifecycle: design, build, deploy, operate, and iterate.
Embrace a “you build it, you run it” DevOps mindset alongside your team.
Make thoughtful trade-offs between effort, quality, and user value—always with accountability for outcomes.

Collaborate & Lead

Work closely with product managers, designers, and other engineers in an agile, cross-functional team.
Contribute ideas, challenge assumptions, and continuously improve how we build software.
Mentor and support other engineers through code reviews, design discussions, and technical leadership.

What We’re Looking For:

A senior engineer who takes responsibility for results, not just implementations.
Someone who enjoys complex problem-solving and isn’t afraid of legacy systems—or changing them.
Strong engineering fundamentals: clean code, testing discipline, system design, and performance awareness.
Strong experience with TypeScript and modern React / Next.js
Strong experience building production systems with .NET (Core / modern .NET preferred).
Comfort operating in production environments and learning from real-world feedback.
A builder’s mindset: If you can think it, you can build it. If you build it, you own it.
Experience leveraging AI, Generative AI (GenAI) to enhance engineering productivity, automate repetitive tasks, and optimize workflows. You should demonstrate the ability to integrate AI-driven solutions into your daily work — such as code generation, debugging, reviews, documentation, and decision support—to improve efficiency for yourself and your teams. A proactive approach to exploring and implementing AI tools that drive innovation and streamline development processes is highly valued.

What's In It For You?

We understand that there is life at work and life outside of work. Here are a few benefits we all benefit from that support us to be our creative best.

Benefits from Day 1

Gym discounts
Employee and Family Assistance program
Virtual wellness events
Conferences & training budget
Regular internal training programs

Financial planning

Let us help you invest in your future with 3% matching towards your pension and multiple forms of income protection.

Competitive salary

Annual bonus structure
3% CPP matching

The base salary range for this position is CAD 140,000 – CAD 190,000.

This range reflects the expected compensation at the time of posting. The final offer may vary and can be higher based on relevant skills, experience, location, and market conditions. Based on the role the total rewards package may also include benefits, bonus, and other employee offerings.

Use of Artificial Intelligence in Hiring: We use artificial intelligence (“AI”) in our hiring process, including to screen, assess, or select applicants for this position.
Vacancy Status: This job posting is for an existing vacancy.

Compensation

Our ranges reflect the expected compensation at the time of posting. The final offer may vary and can be higher based on relevant skills, experience, location, and market conditions. Based on the role, the total rewards package may also include benefits, bonus, and other employee offerings.

The base salary range for this position is

$140,000 - $190,000 CAD

Use of Artificial Intelligence in Hiring: We use artificial intelligence (“AI”) in our hiring process, including to screen, assess, or select applicants for this position.

Vacancy Status: This job posting is for an existing vacancy.

Apply Now

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developer (software engineering manager development program) jobs in markham, on

Senior Software Engineer

Senior Linux Software Engineer (Networking & Systems) (10138)

Power Systems Automation Engineer

Front End Developer

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