Optum is a global organization that delivers care, aided by technology to help millions of people live healthier lives. The work you do with our team will directly improve health outcomes by connecting people with the care, pharmacy benefits, data and resources they need to feel their best. Here, you will find a culture guided by diversity and inclusion, talented peers, comprehensive benefits and career development opportunities. Come make an impact on the communities we serve as you help us advance health equity on a global scale. Join us to start Caring. Connecting. Growing together.

Are you a Senior Software Developer looking to make a real impact in healthcare technology? Do you want to work on meaningful products that support medical professionals and trainees across the UK? If so, this could be the perfect opportunity for you.

We’re looking for a talented and motivated Senior Software Developer to join the FourteenFish team at Optum UK. You’ll be part of a collaborative, forward-thinking group building world-class solutions that improve the lives of healthcare professionals.

This role will see you working across our product suite, contributing to the design, development, and delivery of innovative software. Our tech stack includes C# (.Net Core), MySQL, HTML/CSS, JavaScript, and containerized workloads in AWS.

What you’ll do:
At Optum UK, we believe in the power of technology to make healthcare faster, better, and more accessible. As part of the FourteenFish team, you’ll play a key role in building tools that support clinicians and trainees in their day-to-day work.

You’ll enjoy the flexibility to work remotely* from anywhere within the UK as you take on some tough challenges.

Primary Responsibilities:

• Designing, developing, testing, and maintaining high-quality software solutions
• Collaborating with product managers, designers, and clinicians to translate requirements into technical specifications
• Building and maintaining C#/.Net applications using best practices and design patterns
• Developing RESTful APIs for seamless integration with internal and external systems
• Optimising application performance and conducting code reviews
• Contributing to continuous process improvement within the team
• Supporting DevOps practices including CI/CD and automated deployments
• Troubleshooting and resolving software issues to minimise downtime
• Staying up to date with emerging technologies and healthcare IT trends
• Mentoring junior team members and supporting colleagues
• Communicating clearly through documentation and technical proposals

Who You’ll Be:
You’ll be an experienced software engineer who takes pride in delivering high-quality solutions. You’ll be proactive, curious, and comfortable working independently or as part of a team.

You will be rewarded and recognized for your performance in an environment that will challenge you and give you clear direction on what it takes to succeed in your role, as well as providing development for other roles you may be interested in.

Required Qualifications:

• Proven solid proficiency in C#, .Net Core, and MVC
• Experience designing and developing RESTful APIs
• Proven solid front-end skills including HTML, CSS, JavaScript, and React
• Demonstrated familiarity with microservices and containerization (Docker, Kubernetes)
• Experience with AWS and cloud-based deployments
• Proficiency with MySQL and writing efficient SQL queries
• Proven understanding of DevOps practices including CI/CD, Git/GitHub, and infrastructure automation

*All telecommuters will be required to adhere to the UnitedHealth Group’s Telecommuter Policy.

Please note you must currently be eligible to work and remain indefinitely without any restrictions in the country to which you are making an application. Proof will be required to support your application.

At UnitedHealth Group, our mission is to help people live healthier lives and make the health system work better for everyone. We believe everyone-of every race, gender, sexuality, age, location and income-deserves the opportunity to live their healthiest life. Today, however, there are still far too many barriers to good health which are disproportionately experienced by people of color, historically marginalized groups and those with lower incomes. We are committed to mitigating our impact on the environment and enabling and delivering equitable care that addresses health disparities and improves health outcomes – an enterprise priority reflected in our mission.

Diversity creates a healthier atmosphere: UnitedHealth Group is an Equal Employment Opportunity employer and all qualified applicants will receive consideration for employment without regard to disability, gender reassignment, marriage and civil partnership, pregnancy and maternity, race, religion or belief, sex, sexual orientation, or any other characteristic protected by law. UnitedHealth Group is a drug-free workplace. © 2025 UnitedHealth Group. All rights reserved.