Senior Software Engineer

Are you a Software Engineer looking for a new challenge?

Help save lives every day - join Sopra Steria, the force behind STORM, the command and control system trusted by UK emergency services.

We are hiring Software Developers to support the ongoing development of our STORM application, built using  with a WPF client. You will work across a range of technologies – from middleware and user interfaces to third-party integrations – and contribute to system load testing and interface validation.

You will be part of a collaborative team of developers, testers, and product specialists, all focused on delivering high-quality solutions to our public safety and emergency services customers.

This role is primarily remote-based, offering flexibility to work from home. You must be prepared for occasional travel to our office in the Hertfordshire area to participate in in-person team meetings, and collaborative sessions.

What you will be doing:

• Designing, developing, and maintaining scalable software applications.
• Writing clean, efficient, and well-documented code.
• Participating in the full software development lifecycle – including requirements analysis, design, implementation, testing, and deployment.
• Collaborating with senior developers and architects on system design and architecture.
• Conducting code reviews, providing constructive feedback, and ensuring adherence to coding standards.
• Troubleshooting and resolving complex issues in a timely manner.
• Mentoring and guiding junior developers in a collaborative, learning-focused environment.
• Staying up to date with the latest technologies, tools, and industry trends.

What you will bring:

• Experience across all aspects of the software development lifecycle.
• Strong skills in , with familiarity in other programming languages.
• Experience working with WPF applications and the MVVM architecture pattern.
• Strong problem-solving abilities and attention to detail.
• A proactive attitude and willingness to learn new technologies and development practices.

It would be great if you had:

• Currently hold an active SC and Non-Police Personnel Vetting (NPPV3).
• Knowledge of legacy development environments such as VB6, as well as .NET.
• Experience working in risk-averse environments, such as those within the financial services, insurance, and blue light sectors, where security, compliance, and operational resilience are critical.
• Familiarity with modern UI frameworks, design tools, and best practices for delivering intuitive user experiences.

If you are interested in this role but not sure if your skills and experience are exactly what we’re looking for, please do apply, we’d love to hear from you!

Employment Type :
Full-time

Location:

UK Hybrid
Security Clearance Level: Eligible for NPPV3 clearance
Internal Recruiter:
Jane
Salary: £55-60k depending on level of experience
Benefits: 25 days annual leave with the option to buy additional days, Health Shields, life assurance, pension, and generous flexible benefits fund

Although this role is advertised as full-time, we believe that flexibility at work can promote work/life balance, increase your motivation, reduce stress and improves performance and productivity. We support different ways of working and can offer a range of flexible working arrangements. So, if you’re interested and need to work flexibly, we encourage you to apply and talk to us about what might be possible.

Loved reading about this job and want to know more about us?

Sopra Steria’s Aerospace, Defence and Security business designs, develops and deploys digital solutions to Central Government clients. The work we do makes a real difference to the client’s goal of National Security, and we operate in a unique and privileged environment. We are given time for professional development activities, and we coach and mentor our colleagues, sharing knowledge and learning from each other.

We foster a culture in which employees feel valued and supported and have pride in their work for the customer, delivering outstanding rates of customer satisfaction in the UK’s most complex safety- and security-critical markets.