Senior Software Engineer, CircleCI
£90-113k
Continuous integration and deployment services
Open for applications
Continuous integration and deployment services
201-500 employees
Open for applications
£90-113k
201-500 employees
Company mission
To manage change so software teams can innovate faster. They want to empower technology-driven organizations to do their best work – and make engineering teams more productive and innovative by managing change.
Role
Who you are
- 5+ years of professional software development experience, including production experience writing code in Go. Your broader background may span backend, frontend, AI/ML, or full-stack systems
- Deep proficiency in Go and experience delivering production-quality software at scale
- Strong testing skills with experience writing comprehensive unit, integration, and end-to-end tests
- Proven experience building and maintaining distributed systems in real-world environments
- Familiarity with Kubernetes and modern cloud infrastructure
- A production-first mindset, comfortable monitoring, supporting, and debugging live systems
- A pragmatic approach to engineering, solving problems efficiently while balancing complexity and maintainability
- A collaborative spirit and a desire to grow, mentor, and lead alongside others
Desirable
- Experience with AI/ML technologies or integrating LLMs into applications
- Interest in using AI to enhance developer tooling or automate development workflows
- Knowledge of using machine learning for test selection, build optimization, or predictive CI/CD insights
- Background in frontend development with frameworks like React and TypeScript
- Familiarity with observability and performance optimization practices
What the job involves
- Design and build reliable, observable, zero-downtime distributed systems that serve millions of builds across thousands of customers
- Collaborate with cross-functional teams to shape and refine foundational capabilities
- Own your work from concept to deployment and beyond—digging into production issues using tools like Honeycomb, Datadog, Grafana, and Rollbar to ensure system health
- Write clear, maintainable, and well-documented Go code, with observability and long-term maintainability built in
- Participate in architectural decisions and technical strategy development
- Lead complex projects and initiatives from inception to completion
- Mentor junior and mid-level engineers and provide technical guidance to the team
- Contribute to a culture of continuous improvement, helping your team and our customers succeed
- Continue your professional growth through increased technical scope, leadership opportunities, and strategic impact, supported by mentorship from experienced leaders and exposure to complex engineering challenges across the organization
Salary benchmarks
Our take
Engineering has seen the rise of agile, containerisation and DevOps over the last few years. As a result, the idea of continuous integration and continuous delivery (CI/CD) has grown to be an important part of the engineering space. CircleCI is one company that taps into this field, offering a lightweight and open service.
There are now a lot more companies that have a culture of continuous delivery. CircleCI specifically helps automate all the steps that occur between the time developers make changes to the code and when the application gets in front of the customer. The company has a strong tailwind from this macro trend and their product is loved by engineers, putting them in a strong place to build a strong business.
Services in the sector have grown constricted and cost-heavy, but in 2022, CircleCI debuted a free tier service for engineering teams in a move away from this. By offering flexibility across an increased number of major platforms, including Docker, Windows, and MacOS, the company works towards its ultimate aim to empower technology-driven organisations.
Steph
Company Specialist at Welcome to the Jungle
Insights
Company
Funding (last 2 of 8 rounds)
May 2021
$100m
SERIES F
Apr 2020
$100m
SERIES E
Total funding: $315m
Company benefits
- Whether it’s a peaceful home or a house full of kids, roommates, or pets, your office can be where you need it. CircleCI has been a remote-first company since the beginning. We’ll ensure you stay well-connected with your teammates every day through tools like Zoom, Slack, Confluence, Google Suite, and GitHub. We also provide a home office stipend to help you do your best work
- Regardless of location, we prioritize the health and wellness of our employees and their families. In addition to unlimited PTO, we offer generous parental leave and benefits that can cover employees and dependents up to 100%. We also offer quarterly wellness days, a free Calm subscription, wellness reimbursement, and Cleo for new parents
- At CircleCI, employees have ample opportunity to learn new skills, including project-based learning and presentations from our colleagues. Udemy is available for on-demand learning and we offer an annual stipend for personal development outside of CircleCI. Your continued professional development is important to us because it’s important to you
- Unlimited paid time off policy
- Work from home opportunities
Company HQ
The East Cut, San Francisco, CA
Leadership
Jim Rose
(CEO)Joined CircleCI as COO. Serial entrepreneur, founding Distiller (acquired by CircleCI) and Copious.
Paul Biggar
(Founder)Currently Founder and CEO of Darklang. Previously Principal Engineer at Lookout, Senior Compiler Engineer at Mozilla Corporation and Founder at NewsLabs Inc.
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