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Application Support @ GCS

St. John Street 145-157, LondonOnsiteFull-time
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About this role

Salary: £? - ? per year

Requirements: Experience in application support for development teams in production environmentsStrong troubleshooting skills, including analysing failures and finding root causesExperience with C# .NET and T/SQLExperience working with SQL Server or Oracle databases and Windows Server environmentsAbility to liaise with development teams and internal/external support teamsExperience communicating with business clients and support stakeholdersExperience with incident and problem management processesAbility to contribute to technical and design workshops and support standardsAwareness of performance, scalability, and security considerationsWillingness to provide out-of-office-hours production supportExperience supporting application releases in production and disaster recovery environments Responsibilities: Support development teams with production application support across communication, investigation, and issue resolutionTroubleshoot application failures and implement fixes such as code changes or SQL scriptingCheck Windows Servers, databases, and other relevant application environments when issues occurLiaise with technical support, network, infrastructure, DBA, and other support teams to resolve application issuesCommunicate with primary support helpdesk teams to provide advice and suggestionsWork with team members and the wider development team to establish best practices for application supportAnalyse and help define application configurations that meet business requirementsContribute to technical and design workshops to suggest ideas for stable application operationsHelp define application support standards for safe production operationPlan and estimate work volumes for application support activitiesSupport the rollout of applications into production to minimise failures after releaseConsider performance, scalability, and security during design and implementation phasesFollow incident and problem management processes, ensuring accurate ticket updates and clear stakeholder communicationParticipate in defining and configuring application environments in disaster recovery sitesSupport continuous improvement of application support methodology across the team and wider support departments Technologies: C#SupportNetworkOracleSQLSecurityWindowsASP.NET More:

We are offering a 6-month contract for an Application Support Specialist role on a hybrid basis, with 3 days per week in our Canary Wharf office. The rate is £416 per day, and there is very likely potential for extension. Our tech stack includes T/SQL, C# .NET, and Oracle. This role sits within our production support team, supporting applications across London and New York, with out-of-office-hours support required as part of the role.

last updated 37 week of 2026

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