Application Support Engineer in City of Westminster

Join CGI as an Application Support Engineer and help keep business-critical services stable, resilient and performing at their best. You'll take ownership of live service operations, resolving complex issues and protecting service availability while finding smarter ways to prevent disruption before it happens. Combining hands-on Java application support with service management expertise, you'll improve monitoring, automate operational activities and strengthen service resilience.

In this role, you will take ownership of the day-to-day support and operation of business-critical applications, helping ensure services remain stable, available and performant. You will investigate and resolve incidents and production issues, manage problems, changes and service requests in line with ITIL-aligned processes, and use your Java, Linux and database knowledge to diagnose issues across the application environment. You will also help shape a more proactive and efficient support service.

• Provide day-to-day application and service support, maintaining the availability, performance and stability of critical production services.
• Diagnose incidents and production issues using Java code analysis, logs, monitoring data, database queries and operating-system troubleshooting.
• Manage incidents, problems and service requests against agreed SLAs and KPIs, contributing to Major Incident Management and timely service restoration.
• Undertake root cause analysis, identify recurring incident triggers and implement or recommend preventative solutions.
• Use dashboards, alerts, logs and performance information to detect service degradation and enable proactive intervention.
• Develop PowerShell scripts and other operational automation for daily checks, routine activities and repeatable resolution steps.
• Support controlled deployments, releases, configuration updates and production changes, ensuring appropriate assessment and validation.
• Create and maintain runbooks, operational procedures, Confluence content and knowledge articles that strengthen team capability.
• Support service reporting against SLAs, KPIs and operational measures while contributing to Continuous Service Improvement.

You will bring proven experience supporting live, business-critical applications in a production or service operations environment. You should combine strong troubleshooting capabilities with practical knowledge of Java applications and ITIL-aligned service management. You'll be comfortable taking responsibility during service incidents, working within secure enterprise environments and finding creative, sustainable ways to improve operational performance, with opportunities to develop your expertise alongside experienced CGI colleagues.

• Demonstrable experience in live service, production support or service operations environments.
• Strong experience supporting Java applications, with the ability to navigate code and trace application behaviour for diagnostic purposes.
• Good knowledge of Java Servlets and traditional Java architectures, including experience investigating legacy structures such as Data Access Objects (DAO).
• Practical ITIL-aligned experience across Incident, Problem, Change and Major Incident Management.
• Proven ability to deliver against SLAs and KPIs within controlled production environments.
• Strong troubleshooting and root cause analysis skills, using logs, monitoring information, database queries and code analysis.
• Hands-on Linux administration and command-line troubleshooting experience.
• PowerShell scripting capability, particularly for operational support and automation.
• Database support experience, preferably involving Oracle.
• Experience supporting deployments, releases and production changes within established change-management processes.
• A security-conscious approach, with experience operating within secure and controlled environments.
• Experience producing operational documentation, including support procedures, runbooks and knowledge articles, ideally using Confluence.

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. That same commitment to fairness extends to how we use technology. To support our recruitment team, AI tools may be used to help assess applications though they never replace human judgement. All hiring decisions remain entirely in the hands of our recruitment professionals.

Come join our team—one of the largest IT and business consulting services firms in the world. Discover CGI London, England, United Kingdom > 1000 employees IT services. We are a global business with 91,500 professionals across hundreds of locations worldwide, providing end-to-end IT and business process services that drive our clients' businesses. In the UK alone, we have around 6,000 member-partners working across 19 towns and cities, doing everything from writing complex code to designing sophisticated software solutions. The work we do powers some of the most ambitious projects that touch the lives of many. Our approach sets us apart, characterised by our proximity model, international presence, expertise, and operational excellence. We organise our operations within metro markets where our clients have concentrated footprints, empowering our local teams to build trusted, in-person relationships.

As you build your career here, you’ll develop your skills, share your insights, and work side-by-side with colleagues and clients on innovative solutions that address the most complex issues. Our commitment to ownership, flexibility, and being approachable makes us easy to do business with. Join us, and together, as owners, let’s turn meaningful insights into action to meet the needs and balance the interests of our clients, shareholders, communities, and each other.

Benefits:

• Insurance coverage
• Medical benefits
• Pension plan
• Member Assistant Programme
• Check4Cancer
• Flexible time off
• Share Purchase Plan
• Member discounts
• Dental benefits
• Vision benefits
• Profit Participation Plan
• Health and Wellbeing Programme

CGI was recognised in the Sunday Times Best Places to Work List 2025 and has been named a UK ‘Best Employer’ by the Financial Times. 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.