Cloud Platform Architect / Principal Platform Engineer

Added 27/07/2026

Senior Cloud Platform ArchitectCloud Infrastructure | Kubernetes | Multi-Cloud | Infrastructure Modernisation11 Months Fix-Term Contract with chances of conversion into permanent.We're looking for a Senior Cloud Platform Architect to help drive the transformation of critical infrastructure services into a modern, cloud-native environment.This role sits at the heart of a large-scale infrastructure modernisation programme, supporting the redesign, migration and operation of foundational platform services across public cloud environments.You'll work on highly available, business-critical services while helping shape the future cloud operating model through automation, containerisation and infrastructure-as-code practices.What You'll Be DoingLead the architecture and modernisation of core infrastructure services within cloud-native...

Python SDET- Trading platform- Contract

Added 11/09/2026

Python SDET | Trading Platforms | ContractPython SDET required for a leading financial markets organisation building and enhancing high-performance trading systems.This role sits within a highly technical engineering team responsible for mission-critical trading platforms, market data services and distributed microservices. You'll play a key part in designing automated test frameworks, driving quality engineering practices and embedding automation throughout the CI/CD delivery lifecycle.Essential SkillsStrong Python development experienceCommercial PyTest automation experienceSDET / Software Engineer in Test backgroundAPI and integration testingMicroservices and distributed systemsCI/CD pipeline automationDocker and KubernetesSQL and data validationLinux environmentHighly DesirableEquities, FX, Fixed Income, Commodities or Crypto trading platformsMarket data systemsKafka...

Principal .NET engineer

Added 05/08/2026

We're hiring Back-End Lead / Principal .NET engineers for a greenfield AI platform (Azure, microservices). Dublin hub, ideally hybrid. Contract RoleThis long term contract role is for a seasoned .NET Core backend engineer with over six years of experience. The ideal candidate will design and build scalable, event-driven microservices using Azure services such as App Services, Cosmos DB, Service Bus, and Event Hubs while applying CQRS and NoSQL patterns. 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 want to join an innovative, market-leading team working at the forefront...

DevOps Engineer (.Net)

Added 18/06/2026

Role Title: DevOps Engineer (.NET)Location: Sheffield (Hybrid - 2-3 days per week onsite) Role Category: Inside IR35 Contract Duration: Until 30th November with extension OverviewWe're recruiting for an experienced DevOps Engineer (.NET) to join the Identity & Access Management team of a leading global financial services organisation.This role offers the opportunity to work on enterprise-scale IAM platforms, driving automation, CI/CD, Infrastructure as Code and secure deployment practices across cloud and on-premise environments. You'll work closely with engineering, security and operations teams to improve the reliability, scalability and security of critical identity services. ResponsibilitiesDesign, build and maintain CI/CD pipelines for .NET...

Integration Developer C#,.Net (SC Cleared, Public Sector)

Added 23/09/2026

Integration Design: Collaborate with business stakeholders, IT teams, and external partners to gather integration requirements and define workflows. Design data mappings, transformations, APIs, and message schemas to facilitate the secure and efficient exchange of data between systems.Development and Implementation: Design, develop, test, and deploy integration solutions using C#, .NET, or similar programming languages. Build RESTful APIs and backend services to support integration needs. Configure connectors and implement robust error handling and retry mechanisms to ensure reliability and data integrity.Integration Platforms and Tools: Utilize integration platforms such as Azure Logic Apps, Azure Data Factory, SSIS, or other middleware tools to orchestrate...

.NET Mobile Developer

Added 15/09/2026

.NET Mobile DeveloperHybrid Ede, Gelderland, Netherlands I'm partnered with a Tripple Microsoft Gold Partner and have supported their hiring over the past few years as they have substantially grown into EMEA markets and owned the market. We are currrently working on a .NET Mobile Developer opportunity with a client who is looking for an experienced engineer to help build and enhance modern mobile applications and backend services. This role would be a great fit for someone with strong experience in .NET mobile application engineering, and a passion for delivering high-quality, scalable solutions in an Agile environment. They are looking for...

.Net Integration Developer (SC Cleared)

Added 01/09/2026

ROLE PURPOSEAs an Integration Developer, your primary responsibility is to design, develop, and maintain data integration solutions that enable seamless communication and data exchange between disparate systems. You will collaborate with stakeholders to understand integration requirements, design integration workflows, and implement scalable and robust solutions. A strong emphasis will be placed on development experience, especially in building and consuming APIs using C# or similar modern programming languages. Your role involves working with integration platforms, tools, and technologies to ensure the reliable and efficient flow of data across the organization.PRINCIPAL ACCOUNTABILITIESIntegration Design: Collaborate with business stakeholders, IT teams, and external partners...

.Net Developer (IAM)

Added 10/08/2026

Role Title: .Net Developer (IAM)Location: Sheffield (Hybrid - 2-3 days per week onsite) Role Category: Inside IR35 Contract Duration: Until end of November with extension OverviewWe're recruiting for an experienced .Net IAM Developer to join the Identity & Access Management team of a leading global financial services organisation.This role offers the opportunity to work on enterprise-scale identity solutions, developing secure integrations and supporting identity lifecycle management across a complex technology estate. ResponsibilitiesDevelop enterprise IAM solutions using .NET Core, ASP.NET and C#.Build and support integrations with SailPoint IdentityNow.Develop custom connectors and REST API integrations.Configure integrations with Active Directory, Microsoft SQL and...

Integration Developer C#,.Net (SC Cleared, Public Sector)

Added 07/07/2026

Integration Design: Collaborate with business stakeholders, IT teams, and external partners to gather integration requirements and define workflows. Design data mappings, transformations, APIs, and message schemas to facilitate the secure and efficient exchange of data between systems.Development and Implementation: Design, develop, test, and deploy integration solutions using C#, .NET, or similar programming languages. Build RESTful APIs and backend services to support integration needs. Configure connectors and implement robust error handling and retry mechanisms to ensure reliability and data integrity.Integration Platforms and Tools: Utilize integration platforms such as Azure Logic Apps, Azure Data Factory, SSIS, or other middleware tools to orchestrate...

C# .NET SQL Developer

Added 06/07/2026

Tier 1 bank based in Canary Wharf.Role - C# Developer - Desktop ApplicationsDuration - 6 months with likely extensionRate - £416 p/d (inside IR35)Location - Hybrid / Canary WharfTech Stack C#WPFWinformsJavascriptSQLOracleTasks 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...

.Net IAM Developer

Added 18/06/2026

Role Title: .Net IAM DeveloperLocation: Sheffield (Hybrid - 2-3 days per week onsite) Role Category: Inside IR35 Contract Duration: Until 30th November with extension OverviewWe're recruiting for an experienced .Net IAM Developer to join the Identity & Access Management team of a leading global financial services organisation.This role offers the opportunity to work on enterprise-scale identity solutions, developing secure integrations and supporting identity lifecycle management across a complex technology estate. ResponsibilitiesDevelop enterprise IAM solutions using .NET Core, ASP.NET and C#.Build and support integrations with SailPoint IdentityNow.Develop custom connectors and REST API integrations.Configure integrations with Active Directory, Microsoft SQL and Web...

Senior Azure DevOps Engineer - DevOps & AI Tooling

Added 22/07/2026

Senior DevOps Engineer - DevOps & AI ToolingWe're seeking a Senior DevOps Engineer to lead the evolution of enterprise DevOps and AI-assisted engineering platforms.You'll drive automation, CI/CD, Kubernetes, cloud infrastructure and developer tooling whilst introducing AI-powered capabilities across software delivery, testing, quality and operations.DevOps & Platform EngineeringAI for DevOps / AI-Assisted EngineeringGitHub Copilot, Claude Code or similar AI coding toolsAzure DevOps & GitHub EnterpriseKubernetes, Terraform & Cloud PlatformsCI/CD AutomationPlease send across an updated CV if this position is of interest GCS is acting as an Employment Business in relation to this vacancy.

Senior BI Platform Engineer

Added 11/09/2026

Senior BI Platform Engineer - Power BI / Looker / Snowflake We are looking for a Senior BI Platform Engineer to help support an enterprise Business Intelligence environment and a major data and reporting modernization initiative.The team is evolving its data platform toward Snowflake and implementing modern reporting capabilities. We're looking for someone who understands how BI platforms operate within a business and can help answer the important technical questions: What needs to change? What isn't working? How should the reporting platform connect to the data? And how do we successfully implement and deploy it?ResponsibilitiesProvide technical expertise across enterprise Business...

Senior Looker Platform Engineer

Added 10/09/2026

Hiring Alert!Role: Senior Looker Platform EngineerLocation: Harrisburg, PAPosition SummaryWe are seeking an experienced Looker Administrator to support platform engineering, cloud migration initiatives, data platform modernization, and operational excellence within a large-scale analytics environment. The ideal candidate will have strong expertise in Looker administration, LookML development, BI platform support, cloud technologies, identity management, and performance optimization.Key ResponsibilitiesProvide L3/L4 production support for Looker environments across development and production platforms.Lead platform upgrades, releases, patch management, and validation activities.Support GitHub and LookML development workflows, including Dev/Prod deployments and coordination.Troubleshoot and resolve complex performance, scalability, and data modeling issues.Monitor platform health, reliability, and operational performance.Access...

Senior Platform & Cloud Systems Engineer

Added 27/07/2026

Public Cloud | Automation | Large-Scale InfrastructureAn exciting opportunity for experienced engineers who enjoy solving complex infrastructure challenges and building scalable cloud platforms.You'll join a growing engineering team responsible for delivering reliable infrastructure services across global cloud environments. This role combines cloud engineering, systems engineering and platform design, making it ideal for engineers who enjoy both building and operating production systems.Key ResponsibilitiesDesign and implement scalable cloud infrastructure solutionsSupport large-scale platforms across AWS, Azure and GCPBuild automation frameworks and operational toolingEnhance observability, reliability and platform performancePartner with engineering teams to improve deployment processesDevelop infrastructure tooling with PythonContribute to platform modernisation initiativesCore...