Software Engineer - Execution

CircleCI seeks a Software Engineer passionate about maintaining and crafting the future of services that power the heart of our product. You’ll work across a deep slice of our system on features and capabilities ranging from:

• Orchestrating and scheduling jobs.
• Introducing new execution environments across our platforms: Docker (Nomad), EC2 and GCP.
• Keeping our large multi-tenant, multi-platform fleet of build servers, distributed cloud infrastructure and generally instrumenting our environments to be running reliably and securely.
• Help craft the end user testing environments we offer to our customers.
• Debugging complex issues across the platforms we support.
• Storing customers caches, artifacts, test results and step output.

You’ll collaborate daily with dedicated colleagues across the world. This is a full-time, fully remote role that requires you to participate in our on-call support rotation as well as incident management.

About Execution

The Execution team, embedded within the Foundations division, is tasked with ensuring that any job that has permission to run on our platform can be run immediately, reliably, with the appropriate resources and then handle the results from said job.

About Foundations

The Foundations division is the very heart of CircleCI; its teams build, own, and operate the collection of services that fully realize customer builds, from a trigger in to a status out and everything in between. Teams within the Foundations division work on capabilities like user access and management, pipeline processing, orchestration, job execution, and focus heavily on reliability, security, and performance.

What You’ll Do

• Design and build new features, simplify existing services, automate and scale our systems as we continue to rapidly grow and evolve.
• Write sustainable, testable, high-quality, high-performance code.
• Support, maintain, and debug production microservices in a highly complex distributed system.
• Champion a culture of observability and monitoring by using operational data to help your team improve the stability and performance of our systems.
• Partner with members of a cross-functional team and other partners to set the direction of our platform and product: learn about our business problems, explore solutions, weigh design tradeoffs, and prioritize them to deliver maximum value in a sustainable, incremental fashion.

What You’ll Bring

• 3-5 years as a full time professional developer with experience building reliable, zero-downtime, observable distributed systems.
• The utmost care in regards to how your code runs in production. You have familiarity with observability tools like Honeycomb, Datadog, Graylog, and Rollbar, and understand how to use that information to address a problem.
• Ability to write code that’s easily readable, testable, maintainable, and documented.
• Interest in improving the lives of our customers and the team, and can use just enough code with a keen eye on constraining complexity. We use Go primarily, but you'll also encounter bash, JavaScript, and Clojure - all deployed into Kubernetes and as agents on our compute fleet.
• Ability to learn and think critically about both system design and software engineering concepts and blend those perspectives pragmatically based on project needs.
• Ability to quickly adapt when priorities change and making conscious tradeoffs with incomplete information.
• Bonus: Familiarity with Packer, Ansible, and other DevOps tools and workflows.

We’re Particularly Interested In These Work Styles

• Working transparently and collaboratively within a distributed team.
• Favor toward regular, incremental delivery over precision.
• Striving for continuous learning and improvement for yourself and your team.
• Passionate about ensuring that all of our systems—software and human—scale smoothly.

We Look Forward to Hearing from You

We encourage you to apply even if your experience and skill set do not exactly match the role’s requirements. Our team highly values a growth mindset–if you’re open and willing to learn then we’d love to work with you!