Software Engineer

CircleCI; Toronto; On-site; CAD 124,000 - 155,000; Full time

Job summary

A leading technology company, CircleCI, seeks a Software Engineer to join its dynamic team in Toronto. This role requires strong backend development expertise, particularly in Go, along with experience in distributed systems. The successful candidate will collaborate across functions, writing high-quality code that enhances developer productivity on a massive scale. CircleCI's innovative approach includes leveraging AI to further streamline software delivery, making this a critical role in an influential organization.

Qualifications

• 3+ years of professional software development experience focused on backend systems.
• Production experience writing code in Go.
• Proven experience in building and maintaining distributed systems.

Responsibilities

• Collaborate with engineers, product managers, and designers to build core systems.
• Write clean, testable, maintainable code with comprehensive tests.
• Help debug, monitor, and improve production systems.

Skills

Ownership

Curiosity

Education

Bachelor's degree in Computer Science or related field

Tools

Kubernetes

Cloud Infrastructure

Go

Job description

Join to apply for the Software Engineer role at CircleCI

Join to apply for the Software Engineer role at CircleCI

About CircleCI Engineering

At CircleCI, our engineering teams are the driving force behind the platform trusted by developers worldwide to build, test, and deploy their code with confidence. We operate at a massive scale, processing over 50 million builds per month for organizations ranging from innovative startups to industry-leading enterprises. Our platform sits at a critical intersection in the software development lifecycle, where reliability, performance, and user experience directly impact the productivity of development teams around the globe.

About CircleCI Engineering

At CircleCI, our engineering teams are the driving force behind the platform trusted by developers worldwide to build, test, and deploy their code with confidence. We operate at a massive scale, processing over 50 million builds per month for organizations ranging from innovative startups to industry-leading enterprises. Our platform sits at a critical intersection in the software development lifecycle, where reliability, performance, and user experience directly impact the productivity of development teams around the globe.

As we continue to innovate, we're increasingly leveraging AI to transform the software delivery experience. From intelligent test selection that reduces build times, to predictive analytics that prevent pipeline failures, to AI-powered developer tools that streamline workflows, we're using machine learning and artificial intelligence to solve complex engineering challenges. We believe AI represents the next frontier in CI/CD, enabling smarter, more efficient, and more reliable software delivery pipelines.

Your work at CircleCI directly impacts how software is delivered across the industry. When you contribute to our systems—whether they're customer-facing interfaces, core platform capabilities, or developer tools—you're helping teams worldwide ship better code faster and with greater confidence. The systems you'll help build enable innovation across the entire software industry, making you an essential part of the modern development ecosystem.

Team-Agnostic Placement

We hire team-agnostically at CircleCI, meaning we don’t recruit for a single team from the start. Instead, we get to know each candidate through the interview process and then place them on the team where their strengths, interests, and experience will make the greatest impact. This approach allows us to be thoughtful about matching engineers with the right challenges, and it gives new hires a stronger foundation for long-term success and growth. It’s part of our commitment to building balanced, high-performing teams that are set up to thrive.

By carefully matching your skills to the right team, we ensure you can make the most meaningful impact on systems that are critical to the success of development teams worldwide.

What You’ll Do

• Collaborate with other engineers, product managers, and designers to build and evolve core systems.
• Write clean, testable, and maintainable code in Go, with comprehensive unit and integration tests that ensure reliability and long-term maintainability.
• Participate in code reviews, design discussions, and incident retrospectives—learning from more senior engineers while contributing your own insights.
• Help debug, monitor, and improve systems in production using tools like Honeycomb, Datadog, Grafana, and Rollbar.
• Grow your technical depth and system design skills in a fast-paced, supportive environment where iteration is key.
• Contribute to systems that directly impact developer productivity for thousands of teams around the world.
• Receive mentorship from senior engineers while taking on increasingly complex tasks that will help you grow toward senior-level responsibilities.
  
  

What You’ll Bring

• 3+ years of professional software development experience, with a focus on backend systems.
• Production experience writing code in Go.
• Proven experience building and maintaining distributed systems in real-world production environments.
• Familiarity with Kubernetes and modern cloud infrastructure.
• A strong sense of ownership and curiosity—comfortable diving into complex systems and learning through iteration.
• A desire to write high-quality, maintainable code and contribute to a collaborative engineering culture.
  
  

Bonus Skills (Nice To Have)

• Interest in or exposure to AI/ML technologies and their applications in developer tools.
• Experience with test automation and CI/CD optimization.
• Knowledge of observability practices and performance analysis.
  
  

Canada Base Pay Range

$124,000—$155,000 CAD

We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment. Please contact us to request accommodation.

About CircleCI

CircleCI is the world’s largest continuous integration/continuous delivery (CI/CD) platform, and the hub where code moves from idea to delivery. As one of the most-used DevOps tools - processing more than 3 million jobs a day - CircleCI has unique access to data on how the most effective engineering teams work, and the tools to help software companies successfully leverage the power of AI into their commercial applications. Companies like Hinge, HuggingFace, and Samsung use us to improve engineering team productivity, release better products, and get to market faster.

Founded in 2011 and headquartered in downtown San Francisco with a global, remote workforce, CircleCI is venture-backed by Base10, Greenspring Associates, Eleven Prime, IVP, Sapphire Ventures, Top Tier Capital Partners, Baseline Ventures, Threshold

Ventures, Scale Venture Partners, Owl Rock Capital, Next Equity Partners, Heavybit, and Harrison Metal Capital.

CircleCI is an Equal Opportunity and Affirmative Action employer. We do not discriminate based upon race, religion, color, national origin, sexual orientation, gender, gender identity, gender expression, transgender status, sexual stereotypes, age, status as a protected veteran, status as an individual with a disability, or other applicable legally protected characteristics. We also consider qualified applicants with criminal histories, consistent with applicable federal, state and local law.

Seniority level

• Seniority level

  Mid-Senior level

Employment type

• Employment type

  Full-time

Job function

• Job function

  Engineering and Information Technology

• Industries

  Software Development

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