Software Engineer

Design. Build. Deliver Quality Software.

Are you a practical problem solver who enjoys building reliable software, collaborating with colleagues and exploring how AI can help deliver more without compromising on quality?

At Sigma, we’re looking for a Software Engineer to design, build and maintain high-quality software as part of our Software Engineering team. Reporting to the Head of Engineering, you’ll turn requirements into reliable, maintainable features for ServiceOne, helping increase the team’s delivery capacity and velocity.

This is an exciting opportunity to write quality code, strengthen software through reviews and automated testing, and make effective use of AI-assisted and agentic development—working closely with Business Analysts and stakeholders to deliver solutions that meet business needs.

Sigma Family

💚 At Sigma, we stand out and have now been acknowledged 3 years in a row by the Sunday Times as one of the Best Places to Work - voted by our people.

Our core mission is to #ImproveEverythingAlways, with a strong focus on our people. That's why we are seeking exceptional individuals to join us and represent our clients, delivering top-tier customer service across various industries.

What being a part of the Sigma Family means for you!

📈 Career development and opportunities to apply for internal promotions following your probationary period.

🏆 Monthly, Quarterly and Annual awards with marvelous prizes.

💆‍♀️ Resources such as the Employee Assistance Program (EAP) and Mental Health First Aiders to support you when life might not be going quite as you expected.

🌳 Receive a tree in the Sigma Forest when you pass probation. This will allow you to review how your tree is reducing your carbon footprint.

📁 Medical Insurance – Covers doctor visits, optometrist appointments and dental assistance, funeral cover, Group Life Cover.

💖 Your Health Matters - We have a nurse on-site to assist with any female health-related queries, support when you need it most.

🤓 Your Vision, Our Mission, All Done Where You Work - We’re bringing eye care to you! From eye testing to trendy spectacles, it all happens onsite for your convenience!

🚗 Transportation Benefits – Accommodate making your traveling journey to work easier with the amazing shuttle services that we offer our employees.

💻 Join communities and collaborate with your colleagues on our internal Social Media platform.

💙 The opportunity to be a part of an equal, diverse, and inclusive workplace – all amazing people are welcome in the Sigma Family.

What Your Day-to-Day Will Look Like:

• Develop and maintain features for ServiceOne using modern programming languages and frameworks, translating requirements into reliable, maintainable code.
• Build and integrate with APIs and databases, making sure data flows correctly and securely between ServiceOne and connected systems.
• Write automated tests alongside your code and help keep CI/CD pipelines healthy so changes can be released quickly and safely.
• Take part in code reviews, give and receive constructive feedback, and contribute to shared technical decisions.
• Troubleshoot and resolve problems methodically, investigating root causes and putting fixes in place to prevent them from recurring.
• Direct AI coding agents to accelerate delivery, carefully reviewing their changes and validating results before they are merged.
• Help improve AI agent harnesses by contributing reusable instructions, tool integrations and automated checks that improve the quality of agent output.
• Work closely with Business Analysts and stakeholders to clarify requirements and make sure what you build meets the business need.
• Champion Sigma’s values—Always Learning, Always Adapting, Always Together and Always Better—in how you work with your team and stakeholders.

What Amazing People Bring to the Role..

💡 You’re a curious and adaptable engineer who cares about writing reliable, readable and well-tested code, enjoys solving problems with colleagues and welcomes new ways of working.

At your core, you’re passionate about turning requirements into working software that makes a practical difference. You examine information carefully, check your work and follow procedures while exploring possibilities and generating ideas. You interpret data, make sound decisions and communicate clearly, welcoming feedback and contributing to shared solutions. You manage tasks, meet timescales and stay composed as priorities evolve, bringing Sigma’s values—Always Learning, Always Adapting, Always Together and Always Better—into how you work every day.

Success will be measured through sprint goal delivery, cycle time, defect escape rate, automated test coverage, code review turnaround and change failure rate. Key outputs will include working, tested features; automated tests and CI/CD pipelines; API and system integrations; code reviews and technical decisions; technical documentation; and reusable agent instructions and checks. Expected activities and outputs will be discussed in your first one-to-one with your line manager and reviewed alongside your commitments and goals, with the Sigma Connected Competency Matrix and Always Improving Performance Framework providing further guidance.

You’ll bring practical experience developing and maintaining software using modern programming languages and frameworks in a collaborative team environment. You’re confident working with APIs, databases, version control and automated testing, and can translate requirements into reliable, maintainable code. You troubleshoot problems methodically and collaborate well through code reviews and shared technical decisions.

You’ll ideally bring:

• Experience with cloud platforms, frontend and backend development, CI/CD pipelines and system integrations.
• Practical exposure to AI-assisted development and agentic coding, including directing coding agents, reviewing their changes and validating results.
• Experience configuring or improving AI agent harnesses, including reusable instructions, tool integrations and automated checks.

This isn’t just another Software Engineer role.

It’s an opportunity to build and improve ServiceOne, contribute to shared technical decisions and help shape how the team uses AI to deliver more, faster, without compromising on quality.

If you’re ready to turn requirements into reliable software, solve problems together and explore the possibilities of AI-assisted development, we’d love to hear from you.

Join the Sigma Family.

📩 Apply today and help us #ImproveEverythingAlways.