Software Full Stack SupportDeveloper

What success looks like in this role :

This is a full-time permanent position for a Senior Software Applications Engineer in a hybrid working model requiring on‑site attendance at least three days per week in Milton Keynes. You will play a key role in designing, developing and supporting web‑based applications for a large‑scale managed service program. This position offers the opportunity to work on complex high‑impact projects collaborating with cross‑functional teams to deliver robust, scalable solutions using modern development practices.

Candidates must be eligible to obtain UK Security Clearance (standard clearance process takes approximately 69 months).

• Provide Software Applications Engineering support for larger and more complex applications and project areas.
• Perform build and deployment activities for application development efforts.
• Design and implement requirements that are effective, timely and compliant with project standards.
• Configure program and test application components and technical architecture.
• Troubleshoot and resolve defects and performance‑related issues.
• Ensure compliance with coding standards through design reviews, coding and unit testing.
• Collaborate with Business Analysts to understand requirements and use cases.
• Estimate and size assigned use cases with input from the BA team.
• Independently deploy QAT or UAT environments.
• Work closely with testing teams to resolve regression and newly identified issues.
• Explore alternative solutions using structured decision‑making techniques.
• Participate in code reviews and collaborate with developers, designers and architects.
• Maintain integrity of pre‑production environments (development, test, QA, staging).
• Lead efforts in process improvement and technical automation.
• Provide regular status updates and mentor less experienced team members.

• Strong experience in C#, JavaScript, HTML, CSS development.
• Proven background in web development using the above or similar technologies.
• Experience working with and supporting operational systems.
• Knowledge of web development patterns.
• Proficiency in Microsoft SQL Server development and scripting or similar.
• Familiarity with Azure Dev Ops or equivalent tools.
• Working knowledge of modern development patterns including Agile.
• Eligible for UK Security Clearance.

• A working knowledge of MVC framework or similar.
• Experience with other scripting or database technologies.

This is a full‑time permanent role.

We are unable to support sponsorship for this position.

You will be required to attend our site at least three days per week and therefore must live within commutable distance from Milton Keynes.

Unisys was named a Leader in the 2020 Gartner Magic Quadrant for Managed Workplace Services North America.

Unisys won the 2020 Microsoft Global Partner of the Year Award in the Modern Workplace Modern Endpoint Management category.

Unisys won the 2020 Asia‑Pacific Stevie Awards in the categories of Innovation in Technology Management Planning & Implementation and Innovation in Business‑to‑Business Products & Services.

Unisys was recognized as a Top 100 Global Outsourcing Company by IAOP for the 15th consecutive year.

Unisys was named to the Forbes Americas Best Employers for Diversity 2021 list.

Unisys won the 2021 Artificial Intelligence Breakthrough Award for Best Chatbot Solution.

Unisys was named a Leader in the Nelson Hall 2020 Next Generation End‑User Computing Services report.

Unisys was named one of Americas Best Employers for Women by Forbes in 2023.

Competitive compensation and benefits :
Unisys offers competitive compensation packages and benefits to their employees including healthcare, retirement plans, paid time off and compensation.

Innovative and challenging work :
Unisys is a company that is constantly pushing the boundaries of technology which means that you will have the opportunity to work on innovative and challenging projects.

Collaborative culture :
Unisys has a collaborative and inclusive work culture which means that you will have the chance to work with people from…