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C# Software Engineer Position Description The Space, Defence and Intelligence business unit in CGI is a true IT Systems Integrator. We work, build, and operate bespoke, technically complex, mission-critical systems which help our clients keep us all safe and secure. We bring innovation to our clients using proven and emerging technologies, agile delivery processes and our deep expertise across the breadth of space, defence, intelligence, aerospace and maritime, all underpinned by our end-to-end cyber capability. We work collaboratively with global technology companies, cutting edge SMEs and academia to deliver the optimal solution for each client. CGI was recognised in the Sunday Times Best Places to Work List 2024 and has been named one of the 'World's Best Employers' by Forbes magazine. We offer a competitive salary, excellent pension, private healthcare, plus a share scheme (3.5% + 3.5% matching) which makes you a CGI Partner not just an employee. We are committed to inclusivity, building a genuinely diverse community of tech talent and inspiring everyone to pursue careers in our sector, including our Armed Forces, and are proud to hold a Gold Award in recognition of our support of the Armed Forces Corporate Covenant. Join us and you'll be part of an open, friendly community of experts. We'll train and support you in taking your career wherever you want it to go. Due to the secure nature of the programme, you will need to hold UK Security Clearance or be eligible to go through this clearance. Your future duties and responsibilities We are seeking an experienced C# Software Engineer to join our Development Team, supporting and enhancing a Primary Care System, deployed globally. This is an exciting opportunity to work on a major technical refresh of a deployed system that has been operational since 2011. The role involves working on both existing and new platform builds, ensuring the highest standards of system stability, security, and performance. As part of the Deployed Service Team, you will: • Support the upgrade of the current system to a modern platform based on Windows Server 2016 and Microsoft SQL Server 2017. • Work with tailored COTS medical software, underpinned by large-scale SQL Server databases. • Enhance and maintain a range of generic COTS products (e.g., Microsoft Office, Adobe Reader) and generic hardware (e.g., printers, scanners) integrated with the medical software. Key Responsibilities • Enhance and uplift existing deployed software using DevOps practices. • Develop new deployed software components, ensuring they meet quality and performance standards. • Place all developed software under robust configuration control. • Produce and execute unit tests, and collaborate with testers to develop and improve system tests. • Assist with process improvements to optimize software delivery and system stability. • Provide support for out-of-hours outage resolution as required (by agreement). Required qualifications to be successful in this role • Proven ability to quickly understand and work with complex, mission-critical, and safety-critical systems. • Strong expertise in Microsoft C# development using Visual Studio 2019. • Experience with Windows Server 2016 and Microsoft SQL Server 2017. • Familiarity with Microsoft Office 2016 in a system integration context. • Hands-on experience with SVN or similar configuration control systems. Desirable Skills and Experience • Knowledge of security hardening for operating systems and applications. • Experience with Active Directory (AD) and Group Policy Objects (GPO) configuration. • Familiarity with tools such as Nessus for security assessments. • Understanding of Uninterruptible Power Supplies (UPS) and their interaction with operating systems. • Experience in developing and deploying operating system images (ISOs) to physical machines. • Proficiency with Bugzilla or similar bug-tracking tools. Work Environment and Flexibility • You must be within traveling distance of one of our designated offices in Leatherhead, Reading, or Bridgend, as some activities require accessing air-gapped systems. • Hybrid working model with a mix of office-based and remote work. • Occasional out-of-hours support required for system outages (by agreement). Why Join Us? • Work on a globally deployed, mission-critical system with real-world impact. • Contribute to a significant technology refresh using modern platforms and tools. • Enjoy a balanced work-life arrangement with hybrid working opportunities. • Collaborate with a highly skilled, supportive, and agile team. Apply now to be a part of this vital service, delivering impactful solutions in a fast-paced and challenging environment. #LI-JS2 Together, as owners, let's turn meaningful insights into action. Life at CGI is rooted in ownership, teamwork, respect and belonging. Here, you'll reach your full potential because... You are invited to be an owner from day 1 as we work together to bring our Dream to life. That's why we call ourselves CGI Partners rather than employees. We benefit from our collective success and actively shape our company's strategy and direction. Your work creates value. You'll develop innovative solutions and build relationships with teammates and clients while accessing global capabilities to scale your ideas, embrace new opportunities, and benefit from expansive industry and technology expertise. You'll shape your career by joining a company built to grow and last. You'll be supported by leaders who care about your health and well-being and provide you with opportunities to deepen your skills and broaden your horizons. Come join our team-one of the largest IT and business consulting services firms in the world.