Job Search

Global bank based in Canary Wharf.

Role - C# / WPF / WCF / Winform Developer

Duration - 6 months with likely extension

Rate - £415 p/d (inside IR35)

Location - Hybrid / Canary Wharf

Tech Stack

C#WPFWinformsSQLOracle

Tasks

Tasks range from understanding business requirements, designing application structures, business data analysis, programming WPF (Windows Presentation Foundation) applications in Visual C#.NET on both Oracle and SQL Server database, testing with users, implementation through Development, Quality Assurance (QA), Production and Disaster Recovery environments. Supporting users and writing operation documents including User Helps (manuals) will also be required.As well as application development, this role will also include all aspects of system constructions and support for existing programmes which are written as WinForms (C#.NET) applications. Also, applications written in other languages like MS VBA for Excel and Access, MS VB and MS Excel Macros will also be required.

Additional Tasks

Defining Database objects required in systems to connect with SQL and Oracle Database Administrators in both London and New York.Providing script for database inquiry languages, i.e., T-SQL (SQL Server) and PL/SQL (Oracle) to perform data analysis based on requirements from business parties.Setting up a system distribution method to Citrix and application servers for both Web and Window applications.Troubleshooting systems in an event of failure and implementing necessary solutions by checking Windows Operating System, Internet Information Server and any other relevant environments where the applications are running. In some case this role will act to liaise with other application support team staff.Following the existing team programming policy to keep a common development style to be shared in team members.Updating versions of MS .Net Framework and MS Visual .NET platform to include any necessary changes of existing systems running in Production.Liaising with the relevant support teams such as other Development sections, Technical Support, Network and Infrastructure and DBA where Business users experience system problems.Assessing the impact of data processing loads on SQL and Oracle database and, when appropriate, finding alternative approaches.Rolling out changes with a coordination of Release manager. It is important to maintain the change history of applications

GCS is acting as an Employment Business in relation to this vacancy.

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Global bank based in Canary Wharf.

Role - C# / WPF / WCF / Winform Developer

Duration - 6 months with likely extension

Rate - £415 p/d (inside IR35)

Location - Remote / Canary Wharf

Tech Stack

C#WPFWinformsSQLOracle

Tasks

Tasks range from understanding business requirements, designing application structures, business data analysis, programming WPF (Windows Presentation Foundation) applications in Visual C#.NET on both Oracle and SQL Server database, testing with users, implementation through Development, Quality Assurance (QA), Production and Disaster Recovery environments. Supporting users and writing operation documents including User Helps (manuals) will also be required.As well as application development, this role will also include all aspects of system constructions and support for existing programmes which are written as WinForms (C#.NET) applications. Also, applications written in other languages like MS VBA for Excel and Access, MS VB and MS Excel Macros will also be required.

Additional Tasks

Defining Database objects required in systems to connect with SQL and Oracle Database Administrators in both London and New York.Providing script for database inquiry languages, i.e., T-SQL (SQL Server) and PL/SQL (Oracle) to perform data analysis based on requirements from business parties.Setting up a system distribution method to Citrix and application servers for both Web and Window applications.Troubleshooting systems in an event of failure and implementing necessary solutions by checking Windows Operating System, Internet Information Server and any other relevant environments where the applications are running. In some case this role will act to liaise with other application support team staff.Following the existing team programming policy to keep a common development style to be shared in team members.Updating versions of MS .Net Framework and MS Visual .NET platform to include any necessary changes of existing systems running in Production.Liaising with the relevant support teams such as other Development sections, Technical Support, Network and Infrastructure and DBA where Business users experience system problems.Assessing the impact of data processing loads on SQL and Oracle database and, when appropriate, finding alternative approaches.Rolling out changes with a coordination of Release manager. It is important to maintain the change history of applications

GCS is acting as an Employment Business in relation to this vacancy.

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We're hiring Back-End Lead / Principal .NET engineers for a greenfield AI platform (Azure, microservices). Dublin hub, hybrid. Worth a quick chat?

Looking for contractors and Perm.

Brief Description:

Tech Stack: .NET Core, Azure services, microservices, and event-driven architectures, along with hands-on experience in GitHub/GitHub Actions for CI/CD.

If you're interested, I'd love to connect and discuss further. Would you be available for a quick call today or tomorrow? I look forward to hearing from you soon.

GCS is acting as an Employment Agency in relation to this vacancy.

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We're hiring Back-End Lead / Principal .NET engineers for a greenfield AI platform (Azure, microservices). Dublin hub, hybrid. Worth a quick chat?

Looking for contractors and Perm.

Brief Description:

Tech Stack: .NET Core, Azure services, microservices, and event-driven architectures, along with hands-on experience in GitHub/GitHub Actions for CI/CD.

If you're interested, I'd love to connect and discuss further. Would you be available for a quick call today or tomorrow? I look forward to hearing from you soon.

GCS is acting as an Employment Agency in relation to this vacancy.

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Sr C# .Net Developer

Dublin - Hybrid

7+ years required

€450/day - €500/day

We're looking for a Senior C# developer with strong .NET experience to build and support cloud-ready applications.

You'll work across Windows, Mac, and Linux, using AWS services, and you'll get to dive into Systems & Connectivity, Databases, and Software Integrity.

If you enjoy clean, test-driven code, automation, and working with Git in a collaborative team, this role offers plenty of technical variety and real impact.

GCS is acting as an Employment Business in relation to this vacancy.

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Sr C# .Net Developer

Dublin - Hybrid

7+ years required

€70,000 - €80,000 base salary + benefits

We're looking for a Senior C# developer with strong .NET experience to build and support cloud-ready applications.

You'll work across Windows, Mac, and Linux, using AWS services, and you'll get to dive into Systems & Connectivity, Databases, and Software Integrity.

If you enjoy clean, test-driven code, automation, and working with Git in a collaborative team, this role offers plenty of technical variety and real impact.

GCS is acting as an Employment Agency in relation to this vacancy.

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For our client who is a leading global information services company, providing data and analytical tools to our clients around the world. we are looking for below hiring .

JOB DESCRIPTION:

Role : Senior C# .NET Developer (Oracle to PostgreSQL Migration Project)
Duration : 6 months extendable
Location : Nottingham ( Fully Remote )
Rates : £500 - 520 per day Inside IR35

Overview:

About the Project
We are undertaking a strategic transformation of a legacy system built on PHP and Oracle, migrating to a modern architecture using PostgreSQL and .NET (C#).

* 5+ years of experience in .NET/C# development, with a strong focus on backend services and data access layers.Proven experience in migrating legacy systems, especially from Oracle to PostgreSQL or similar.Strong understanding of PL/SQL and experience translating stored procedures into application logic.Familiarity with PostgreSQL, including performance tuning and SQL dialect differences.Experience working in hybrid environments where legacy and modern systems coexist.Comfortable using AI tools (e.g., GitHub Copilot, ChatGPT, code translators) to assist in development and migration tasks.Solid understanding of software architecture, design patterns, and integration strategies.Excellent communication skills and ability to work collaboratively in a cross-functional team

GCS is acting as an Employment Business in relation to this vacancy.

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Global bank based in Canary Wharf.

Role - C# / WPF / WCF / Winform Developer

Duration - 6 months with likely extension

Rate - £415 p/d (inside IR35)

Location - Remote / Canary Wharf

Tech Stack

C#WPFWinformsSQLOracle

Tasks

Tasks range from understanding business requirements, designing application structures, business data analysis, programming WPF (Windows Presentation Foundation) applications in Visual C#.NET on both Oracle and SQL Server database, testing with users, implementation through Development, Quality Assurance (QA), Production and Disaster Recovery environments. Supporting users and writing operation documents including User Helps (manuals) will also be required.As well as application development, this role will also include all aspects of system constructions and support for existing programmes which are written as WinForms (C#.NET) applications. Also, applications written in other languages like MS VBA for Excel and Access, MS VB and MS Excel Macros will also be required.

Additional Tasks

Defining Database objects required in systems to connect with SQL and Oracle Database Administrators in both London and New York.Providing script for database inquiry languages, i.e., T-SQL (SQL Server) and PL/SQL (Oracle) to perform data analysis based on requirements from business parties.Setting up a system distribution method to Citrix and application servers for both Web and Window applications.Troubleshooting systems in an event of failure and implementing necessary solutions by checking Windows Operating System, Internet Information Server and any other relevant environments where the applications are running. In some case this role will act to liaise with other application support team staff.Following the existing team programming policy to keep a common development style to be shared in team members.Updating versions of MS .Net Framework and MS Visual .NET platform to include any necessary changes of existing systems running in Production.Liaising with the relevant support teams such as other Development sections, Technical Support, Network and Infrastructure and DBA where Business users experience system problems.Assessing the impact of data processing loads on SQL and Oracle database and, when appropriate, finding alternative approaches.Rolling out changes with a coordination of Release manager. It is important to maintain the change history of applications

GCS is acting as an Employment Business in relation to this vacancy.

Read less

Global bank based in Canary Wharf.

Role - C# / WPF / WCF / Winform Developer

Duration - 6 months with likely extension

Rate - £415 p/d (inside IR35)

Location - Remote / Canary Wharf

Tech Stack

C#WPFWinformsSQLOracle

Tasks

Tasks range from understanding business requirements, designing application structures, business data analysis, programming WPF (Windows Presentation Foundation) applications in Visual C#.NET on both Oracle and SQL Server database, testing with users, implementation through Development, Quality Assurance (QA), Production and Disaster Recovery environments. Supporting users and writing operation documents including User Helps (manuals) will also be required.As well as application development, this role will also include all aspects of system constructions and support for existing programmes which are written as WinForms (C#.NET) applications. Also, applications written in other languages like MS VBA for Excel and Access, MS VB and MS Excel Macros will also be required.

Additional Tasks

Defining Database objects required in systems to connect with SQL and Oracle Database Administrators in both London and New York.Providing script for database inquiry languages, i.e., T-SQL (SQL Server) and PL/SQL (Oracle) to perform data analysis based on requirements from business parties.Setting up a system distribution method to Citrix and application servers for both Web and Window applications.Troubleshooting systems in an event of failure and implementing necessary solutions by checking Windows Operating System, Internet Information Server and any other relevant environments where the JRIE applications are running. In some case this role will act to liaise with other application support team staff.Following the existing team programming policy to keep a common development style to be shared in team members.Updating versions of MS .Net Framework and MS Visual .NET platform to include any necessary changes of existing systems running in Production.Liaising with the relevant support teams such as other Development sections, Technical Support, Network and Infrastructure and DBA where Business users experience system problems.Assessing the impact of data processing loads on SQL and Oracle database and, when appropriate, finding alternative approaches.Rolling out changes with a coordination of Release manager. It is important to maintain the change history of applications

GCS is acting as an Employment Business in relation to this vacancy.

Read less

Global bank based in Canary Wharf.

Role - C# / WPF / WCF / Winform Developer

Duration - 6 months with likely extension

Rate - £415 p/d (inside IR35)

Location - Remote / Canary Wharf

Tech Stack

C#WPFWinformsSQLOracle

Tasks

Tasks range from understanding business requirements, designing application structures, business data analysis, programming WPF (Windows Presentation Foundation) applications in Visual C#.NET on both Oracle and SQL Server database, testing with users, implementation through Development, Quality Assurance (QA), Production and Disaster Recovery environments. Supporting users and writing operation documents including User Helps (manuals) will also be required.As well as application development, this role will also include all aspects of system constructions and support for existing programmes which are written as WinForms (C#.NET) applications. Also, applications written in other languages like MS VBA for Excel and Access, MS VB and MS Excel Macros will also be required.

Additional Tasks

Defining Database objects required in systems to connect with SQL and Oracle Database Administrators in both London and New York.Providing script for database inquiry languages, i.e., T-SQL (SQL Server) and PL/SQL (Oracle) to perform data analysis based on requirements from business parties.Setting up a system distribution method to Citrix and application servers for both Web and Window applications.Troubleshooting systems in an event of failure and implementing necessary solutions by checking Windows Operating System, Internet Information Server and any other relevant environments where the JRIE applications are running. In some case this role will act to liaise with other application support team staff.Following the existing team programming policy to keep a common development style to be shared in team members.Updating versions of MS .Net Framework and MS Visual .NET platform to include any necessary changes of existing systems running in Production.Liaising with the relevant support teams such as other Development sections, Technical Support, Network and Infrastructure and DBA where Business users experience system problems.Assessing the impact of data processing loads on SQL and Oracle database and, when appropriate, finding alternative approaches.Rolling out changes with a coordination of Release manager. It is important to maintain the change history of applications

GCS is acting as an Employment Business in relation to this vacancy.

Read less