Lead Software Developer
Remote (UK-based) | Occasional travel to Ashford, Kent (approximately twice a year)
Full-time | Permanent | 37.5 hours per week
About CLEO Systems
CLEO Systems is a wholly owned subsidiary of Integrated Care 24 (IC24), the UK’s leading not-for-profit social enterprise delivering innovative, patient-focused primary care services.
Our mission is Clinical Excellence Online (CLEO) — using technology to improve access to health and social care, reduce pressure on secondary care, and put patients first, not paperwork. IC24 supports over 6 million patients nationwide across NHS 111, GP out-of-hours, primary care, and secondary care services.
With over 20 years of software expertise, we work in close collaboration with the NHS to deliver solutions across secondary care outpatients, integrated urgent care, community services, urgent treatment centres, and pharmacy settings.
Our Ethos
* Integrity – We do the right thing
* Creativity – We find the best solutions
* Collaboration – We work together to deliver
The Role
As a Lead Software Developer, you’ll lead the design, development, and optimisation of CLEO Systems’ mission-critical software solutions. You’ll mentor and manage a team of developers while playing a key role in architectural decision-making and delivery of high-performance, scalable applications that directly support patient care.
Key Responsibilities
* Collaborate with the Technical Design Authority to propose and implement architectural improvements
* Design and develop complex backend systems using modern cloud technologies
* Optimise application performance while maintaining data integrity and high-quality standards
* Ensure seamless integration with databases, APIs, and third-party systems
* Lead, mentor, and develop a high-performing software development team
* Drive innovation and ensure delivery aligns with CLEO Systems’ strategic goals
Essential Criteria
* A minimum of 6 years’ experience as a Software Developer
* Strong experience with Golang, including TDD and unit testing
* Hands-on experience with AWS (EC2, S3, RDS, Lambda)
* Proficiency with ALM tools such as JIRA and GitHub
* Strong SQL skills including schema design and scripting (MSSQL & PostgreSQL)
* Experience integrating third-party solutions via APIs, messaging, or web services
* Solid understanding of web technologies, including HTML5 and JavaScript
What’s In It for You?
* Salary up to £72,000 (dependent on experience)
* Additional £3,000 on-call allowance
* Generous annual leave including bank holidays
* 6% employer pension contribution (NEST)
* Private medical insurance via Benenden Health (option to add family cover available)
* Laptop and full home-working kit provided
* Heartbeat wellbeing programme with discounts and resources
* Free, confidential 24/7 counselling service
* Ongoing learning and development opportunities
Interview Process
We believe interviews should be a two-way conversation. Our process typically includes:
* Introductory call (45 minutes) with our Principal Software Architect
* Technical stage – a Go coding challenge
* Final interview – discussion of the challenge and further questions
Due to the nature of this position, employment is subject to proof of eligibility to work in the UK, completion of a satisfactory basic DBS disclosure and two references.
Closing date: 29th January 2026
At CLEO Systems, we celebrate brave ideas and brave people.
👉 Learn more at www.cleosystems.com
We are committed to providing equal opportunities for all people and we particularly encourage applications from ethnic minorities, applicants with a disability and those from other under-represented groups.
If you would like to discuss any reasonable adjustments before applying or would like an accessible version of any recruitment documents, please contact the recruitment team on careers@cleosystems.com