Software Engineer

Summary

Join CircleCI's Engineering team and contribute to the platform used by developers worldwide. Collaborate with engineers, product managers, and designers to build and evolve core systems. Write clean, testable, and maintainable code in Go, ensuring reliability and long-term maintainability. Participate in code reviews, design discussions, and incident retrospectives. Help debug, monitor, and improve systems in production using various tools. Grow your technical depth and system design skills in a fast-paced environment. Contribute to systems directly impacting developer productivity for thousands of teams globally. Receive mentorship from senior engineers while taking on increasingly complex tasks.

Requirements

• 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

Responsibilities

• 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

Preferred Qualifications

• 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