Senior .NET Technical LeadRemote / hybrid within Ireland, with occasional travel to sites as required.Fixed term contract (sponsorship... Read more
Senior .NET Technical Lead
Remote / hybrid within Ireland, with occasional travel to sites as required.
Fixed term contract (sponsorship is not provided)
Overview
We are seeking an experienced Senior .NET Technical Lead to take ownership of business-critical Microsoft applications and services. This role combines technical leadership, application support, enhancement delivery, and stakeholder engagement within a fast-paced production environment.
Key Responsibilities
Own the technical direction, support, and ongoing development of .NET applications.Lead application transition and knowledge-transfer activities.Investigate and resolve complex production issues.Design and deliver enhancements, integrations, and change requests.Review architecture, code quality, and technical debt.Provide solution designs, technical estimates, and recommendations.Lead code reviews, releases, and deployment activities.Mentor developers and promote engineering best practices.Support roadmap planning and continuous improvement initiatives.Essential Experience
8+ years of commercial software development experience.Strong .NET / ASP.NET and modern .NET development expertise.Strong SQL Server development and performance optimisation skills.Experience with APIs, web services, and system integrations.Experience supporting business-critical production applications.Strong troubleshooting, debugging, and root-cause analysis skills.Experience with CI/CD, release management, and deployment processes.Previous Technical Lead, Lead Developer, or Senior Engineer experience.Additional Experience Valued
Experience with .NET Framework 4.8, .NET 8, Angular, SSRS, mobile applications, identity management, secure B2B integrations, or application transition projects would be beneficial.
GCS is acting as an Employment Business in relation to this vacancy.
Read lessDublin, Dublin County, Republic of IrelandFixed Term ContractRemote
Cloud Engineer | Data Act Cloud Services RegulationWe are looking for a Cloud Engineer with strong Azure and... Read more
We are looking for a Cloud Engineer with strong Azure and multi-cloud experience to support regulatory investigations, compliance assessments, and cloud technology initiatives.
Key Skills & Experience:
3+ years managing cloud infrastructure and workloads, ideally in AzureStrong experience with AKS, Azure Virtual WAN, Cosmos DB, and Entra IDHands-on experience with Kubernetes, Docker, Terraform, and cloud automationKnowledge of Azure AD, GCP, cloud networking, and IAMExperience with OpenStack or other open-source cloud platformsFamiliarity with CI/CD pipelines and Azure DevOpsStrong analytical, communication, and documentation skillsDesirable:
Cloud certifications (Azure, GCP, Kubernetes)Experience in regulated environmentsExposure to AI and multi-cloud platformsThis is an excellent opportunity for a cloud professional who enjoys solving complex technical challenges and contributing to the evolving regulation of cloud services.
GCS is acting as an Employment Business in relation to this vacancy.
Read lessDublin, Dublin County, Republic of IrelandFixed Term Contract
Job DescriptionJob TitleSecurity Architect (12-Month Fixed-Term Contract)LocationHybrid - Warrington, EnglandContract12-Month Fixed-Term Contract (FTC)Role OverviewWe are seeking an experienced... Read more
Job Description
Job Title
Security Architect (12-Month Fixed-Term Contract)
Location
Hybrid - Warrington, England
Contract
12-Month Fixed-Term Contract (FTC)
Role Overview
We are seeking an experienced Security Architect to join an Enterprise Security team, responsible for ensuring the design and delivery of secure technology solutions across a large-scale transformation programme.
The successful candidate will produce high-level and low-level security designs for multiple high-impact initiatives, ensuring solutions are secure by design, compliant with security standards, and aligned with business objectives.
Working closely with Solution Architects, Project Managers, Business Analysts, and technical stakeholders, you will provide expert security guidance throughout the project lifecycle-from initial solution design through to implementation and deployment into production.
Key Responsibilities
*Provide specialist security architecture support across enterprise-level technology projects.
*Collaborate with Technology Solution Architects and project teams to embed security into solution design from the earliest stages of the project lifecycle.
*Support security triage activities to identify resource requirements based on project priorities, timelines, and specialist skills.
*Conduct security risk assessments using recognized threat modelling methodologies such as STRIDE, DREAD, and MITRE Att&ck.
*Produce high-level and detailed security architecture and design documentation for complex, high-security-impact initiatives.
*Define security requirements based on risk assessments, organisational standards, and security design patterns.
*Identify, assess, and communicate security risks, control gaps, and policy non-compliance to project stakeholders and service owners.
*Participate in security governance and architecture review processes, updating design documentation in response to feedback.
*Develop security test plans and scopes for functional security testing and penetration testing.
*with internal and external testing teams to support security validation and remediation activities.
*Ensure security designs comply with organisational policies, industry standards, and regulatory requirements.
Essential Skills & Experience
*Proven experience providing security architecture support within enterprise-scale technology projects.
*Strong understanding and practical application of threat modelling techniques, including STRIDE, DREAD, MITRE Att&ck, or similar frameworks.
*Experience producing structured, high-quality security designs and technical documentation.
*Broad technical knowledge across infrastructure, networking, operating systems, databases, cloud platforms, and application architectures.
*Strong expertise across key security domains, including:
oIdentity and Access Management (IAM)
oCryptography
oEndpoint Security
oNetwork Security
oApplication Security
oSecurity Monitoring and Logging
oVulnerability Management
*Experience supporting penetration testing activities and working with internal and third-party security testing providers.
*Strong understanding of cloud security principles across Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS).
*Knowledge of industry security standards and frameworks, including CIS Controls, ISO 27001, PCI DSS, and NIST.
*Ability to assess security risks, communicate findings effectively, and support informed risk-based decision making.
*Excellent written, presentation, stakeholder engagement, and communication skills.
Desirable Skills & Experience
*Experience working within complex release management or technical delivery environments.
*Familiarity with Agile delivery tools such as Jira and Confluence.
*Experience working within highly regulated industries such as financial services, healthcare, gaming, gambling, or similar environments.
*Knowledge of multiple delivery methodologies including Agile, Scrum, Lean, and Waterfall.
*Professional security certification such as CISSP.
Key Competencies
*Strategic and analytical thinking.
*Strong problem-solving and risk assessment capabilities.
*Excellent stakeholder management and influencing skills.
*Ability to balance security, business requirements, delivery pace, and cost.
*Strong attention to detail with a governance-focused mindset.
*Collaborative approach with cross-functional technical teams.
GCS is acting as an Employment Business in relation to this vacancy.
Read lessWarrington, England, United KingdomFixed Term Contract
Public Cloud | Automation | Large-Scale InfrastructureAn exciting opportunity for experienced engineers who enjoy solving complex infrastructure challenges... Read more
An 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 RequirementsStrong experience within Cloud Engineering, Systems Engineering or Infrastructure EngineeringProven experience delivering cloud infrastructure at scaleAWS and/or Azure expertiseExperience supporting production-critical environmentsStrong automation mindsetPython scripting or software development capabilityExcellent troubleshooting and problem-solving skillsAdditional ExperienceGCPContainerisation and KubernetesGo or RustAI/LLM technologiesEnterprise-scale infrastructure environmentsWhat Success Looks LikeYou'll be able to clearly demonstrate:
Infrastructure you've personally designed and deployedPlatforms you've supported in productionAutomation you've introducedScale you've worked atThe business impact of your engineering decisions
GCS is acting as an Employment Business in relation to this vacancy.
Read lessRepublic of IrelandFixed Term Contract
Hybrid Dublin | Enterprise Cloud PlatformsWe're hiring experienced Site Reliability Engineers to support the evolution of large-scale cloud... Read more
We're hiring experienced Site Reliability Engineers to support the evolution of large-scale cloud platforms used globally across critical production environments.
Unlike traditional SRE opportunities focused heavily on Kubernetes, this role places greater emphasis on cloud infrastructure, systems engineering and platform reliability.
ResponsibilitiesEngineer highly available cloud infrastructure platformsImprove reliability, resilience and operational excellenceDrive automation across provisioning, deployment and operational workflowsDevelop tools and services using Python and modern scripting technologiesSupport multi-region production environmentsParticipate in incident analysis and root cause investigationsReduce operational overhead through automation and engineering improvementsRequired ExperienceStrong cloud infrastructure experience across AWS, Azure or GCPExperience operating customer-facing or business-critical platformsProven automation expertiseStrong Linux and systems engineering knowledgeExperience writing production-quality Python codeUnderstanding of infrastructure scalability and performanceDesirable ExperienceContainer platforms and KubernetesInfrastructure as CodeGo or RustPlatform Engineering methodologiesAI-assisted engineering workflowsYou'll Stand Out If You HaveWorked in high-growth technology businessesSupported platforms serving thousands or millions of usersOperated services across multiple global regionsDesigned solutions rather than simply supporting them
GCS is acting as an Employment Business in relation to this vacancy.
Read lessRepublic of IrelandFixed Term Contract
Dublin | Hybrid (2 Days Onsite) | 11-Month PAYE ContractBuild, Scale and Operate Cloud Infrastructure at Enterprise ScaleWe're... Read more
We're seeking experienced Cloud Infrastructure Engineers to join a global engineering organisation responsible for designing, deploying and operating large-scale production infrastructure across public cloud environments.
This is a hands-on engineering role suited to candidates who enjoy building and improving cloud platforms rather than simply administering them. You'll work across complex production environments supporting services used by thousands of users and customers globally.
What You'll Be DoingDesign, build and support large-scale cloud infrastructure solutionsDeploy and manage production workloads across AWS, Azure and/or GCPImprove platform reliability, scalability and performanceAutomate operational processes and eliminate manual toilTroubleshoot complex infrastructure and production issuesBuild tooling and automation using Python and other scripting languagesCollaborate with engineering teams across multiple regionsSupport infrastructure used by large internal and external user basesWhat We're Looking ForEssential3+ years' hands-on public cloud engineering experienceStrong AWS and/or Azure expertiseExperience designing and operating infrastructure in production environmentsStrong systems engineering backgroundExperience supporting cloud services at scaleInfrastructure automation and scripting experiencePython development or automation skillsExperience troubleshooting complex distributed systemsNice to HaveGCP experienceKubernetes and containerisationGo or Rust development experienceExperience supporting high-traffic or mission-critical platformsExposure to AI tooling, LLMs or modern developer productivity toolsIdeal BackgroundsCloud EngineerInfrastructure EngineerSystems EngineerPlatform EngineerDevOps Engineer
GCS is acting as an Employment Business in relation to this vacancy.
Read lessRepublic of IrelandFixed Term Contract
Senior Infrastructure Engineer (Cloud & Core Services)Linux | Cloud Infrastructure | Automation | Critical Services11 Months PAYE Contract... Read more
11 Months PAYE Contract with strong possibility of conversion in Permanent.
An opportunity for an experienced Infrastructure Engineer to help modernise and transform foundational enterprise services that underpin large-scale technology environments.
This role combines deep infrastructure engineering with modern cloud technologies, making it ideal for candidates who understand both traditional infrastructure and cloud-native platforms.
Key ResponsibilitiesModernise critical infrastructure services and support migration programmesDesign, build and maintain highly available cloud-hosted platformsSupport containerisation initiatives across internal services and toolingImplement Infrastructure-as-Code and automation best practicesDevelop operational tooling and deployment workflowsImprove platform resilience, observability and operational readinessCollaborate with engineering teams to evolve infrastructure toward scalable cloud-native architecturesProvide technical leadership across infrastructure transformation projectsSkills & ExperienceEssentialStrong Linux systems administration and engineering experiencePublic cloud experience within AWS, Azure or GCPTerraform and Infrastructure-as-Code expertiseContainer technologies including Docker and KubernetesAutomation and scripting using Python, Go or similar languagesCI/CD pipeline implementation and management experienceUnderstanding of networking and enterprise infrastructure servicesExperience supporting highly available production environmentsPreferredExperience migrating workloads from virtualised environments into public cloudKnowledge of service networking, DNS, identity or authentication platformsExposure to Platform Engineering principlesExperience within large-scale enterprise or technology environmentsCrossplane or Kubernetes platform engineering experienceIdeal BackgroundWe're interested in candidates from backgrounds such as:
Infrastructure EngineeringCloud EngineeringPlatform EngineeringSite Reliability Engineering (SRE)DevOps EngineeringLinux Systems EngineeringWhat Success Looks LikeYou'll help deliver modern, automated and scalable infrastructure platforms that improve reliability, accelerate delivery and support long-term cloud adoption strategies.
GCS is acting as an Employment Business in relation to this vacancy.
Read lessRepublic of IrelandFixed Term Contract
Senior Cloud Platform ArchitectCloud Infrastructure | Kubernetes | Multi-Cloud | Infrastructure Modernisation11 Months Fix-Term Contract with chances of... Read more
11 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 environmentsDesign and implement production-grade Kubernetes platforms across AWS, Azure and/or GCPDrive infrastructure automation using Terraform and modern IaC practicesDesign multi-cloud infrastructure patterns and service networking solutionsSupport migration initiatives from traditional virtualised environments towards cloud-native platformsBuild and improve CI/CD pipelines, deployment strategies and operational toolingPartner with engineering teams to improve resilience, scalability and platform reliabilityChampion an "everything-as-code" approach across infrastructure and operationsWhat We're Looking ForEssentialStrong experience architecting and operating Kubernetes platforms in productionDeep understanding of public cloud infrastructure (AWS, Azure and/or GCP)Experience with Terraform or similar Infrastructure-as-Code toolingStrong Linux systems engineering backgroundExperience with Docker and container ecosystem technologiesUnderstanding of cloud networking, service discovery and platform securityExperience building automated deployment and operational workflowsDevelopment experience in Go, Python or similar languagesNice To HaveCrossplane experiencePlatform Engineering experienceSRE or Reliability Engineering backgroundExperience supporting critical shared services at scaleExposure to infrastructure modernisation or datacentre transformation programmesBackground7+ years within Platform Engineering, Infrastructure Engineering, SRE or Cloud Architecture rolesProven experience delivering enterprise-scale cloud transformationsExperience leading architectural decisions and migration programmesWhy This Role?You'll work on some of the most critical infrastructure services within the organisation, helping shape the next generation cloud platform while influencing architecture strategy across multiple technology domains.
GCS is acting as an Employment Business in relation to this vacancy.
Read lessRepublic of IrelandFixed Term Contract
Network Engineer - Optical (DWDM)Dublin, Ireland | Permanent | Full-TimeJoin a Global Infrastructure Team Supporting Mission-Critical NetworksWe are... Read more
We are seeking a Network Engineer - Optical (DWDM) to join a highly skilled network operations team supporting large-scale optical transport infrastructure. This is an exciting opportunity to work on complex, high-capacity networks that connect critical digital services across multiple regions.
As part of the team, you will play a key role in maintaining network reliability, managing optical transport systems, supporting upgrades, and ensuring seamless connectivity across a large-scale production environment.
What You'll Be DoingOperate and support DWDM optical transport networks over fibre infrastructureManage network events including fibre cuts, signal degradation, restoration, and rerouting activitiesPerform software upgrades on optical networking platforms within structured maintenance windowsTroubleshoot optical transport issues and maintain network performance and availabilityCoordinate with internal engineering teams and external vendorsSupport change-managed network operations while ensuring minimal service impactWhat We're Looking For3+ years' experience in DWDM or Optical Transport NetworksStrong understanding of DWDM, ROADM, transponders, amplifiers, mux/demux, and fibre infrastructureExperience within Network Operations, NOC, Telecoms, ISP, Carrier, or Optical Operations environmentsStrong troubleshooting and incident management capabilitiesExperience working within structured change-management processesExcellent communication and stakeholder management skillsTechnology EnvironmentDWDM Optical NetworksOptical Fibre InfrastructureMulti-vendor Optical PlatformsCienaCiscoInfineraNokiaWhy Apply?Work on large-scale, business-critical networking infrastructureJoin a collaborative and highly technical engineering environmentGain exposure to advanced optical networking technologiesExcellent learning, development, and career progression opportunitiesFast and streamlined interview processRole DetailsLocation: Dublin, Ireland
Job Type: Permanent, Full-Time
Working Model: Office-based with occasional flexibility
If you're passionate about optical networking and want to work in a highly technical environment supporting critical network infrastructure, we'd love to hear from you.
Apply now or contact us for a confidential discussion.
GCS is acting as an Employment Business in relation to this vacancy.
Read lessRepublic of IrelandFixed Term Contract
Systems Engineer - Kubernetes Platform EngineeringBuild and Scale the Infrastructure Behind One of the World's Leading Cloud PlatformsAre... Read more
Are you passionate about Kubernetes, cloud infrastructure, automation, and large-scale platform engineering? Do you enjoy solving complex infrastructure challenges while working with cutting-edge cloud-native technologies?
We are looking for multiple Systems Engineers to join a high-performing Platform Engineering team responsible for designing, operating, and evolving a global Kubernetes platform that supports critical enterprise workloads.
This is an exciting opportunity to work on a rapidly growing Kubernetes estate spanning 60-70 production clusters and a similar number of development clusters across AWS, Azure, and GCP, helping to shape the future of cloud infrastructure at scale.
What You'll Be DoingYou'll be responsible for building, operating, and improving large-scale Kubernetes platforms while driving automation, reliability, and operational excellence across cloud environments.
Key responsibilities include:
Managing Kubernetes clusters at scale, including upgrades, patching, and platform lifecycle managementBuilding and maintaining Infrastructure-as-Code solutions using Terraform and automation toolingSupporting cloud-native workloads across AWS, Azure, and GCPDeveloping and enhancing CI/CD and GitOps pipelinesDriving platform reliability, observability, monitoring, and performance improvementsContributing to vulnerability management, automation, and operational best practicesCollaborating with engineering teams to deliver scalable, secure, and resilient infrastructure solutionsWhat We're Looking ForWe're interested in engineers who combine strong infrastructure expertise with automation and cloud-native experience.
Key skills include:
Kubernetes production experienceStrong Linux systems engineering backgroundTerraform and Infrastructure-as-CodeHelm, FluxCD, ArgoCD, and GitOps practicesContainers, virtualization, and networkingCloud-native infrastructure and load balancingPython, Go (preferred), or Bash scriptingCI/CD pipelines and automationObservability tools such as Prometheus and GrafanaExperience working with AWS, Azure, and/or GCPWhat's on Offer?Opportunity to join a highly skilled global platform engineering teamExposure to modern cloud-native technologies and large-scale Kubernetes environmentsWork on business-critical infrastructure supporting enterprise workloadsStrong culture of innovation, automation, and continuous improvementExcellent long-term career prospectsInitial 11-month engagement with strong potential for extension and future permanent opportunities for high-performing individualsWho Should Apply?This opportunity is ideal for:
Platform EngineersKubernetes EngineersDevOps EngineersSite Reliability Engineers (SREs)Cloud Infrastructure EngineersProduction EngineersLinux Systems EngineersIf you're looking for an opportunity to work on large-scale Kubernetes platforms, cutting-edge cloud technologies, and infrastructure that operates at global scale, we'd love to hear from you.
Interested? Apply now or reach out directly for a confidential discussion.
GCS is acting as an Employment Agency in relation to this vacancy.
Read lessRepublic of IrelandFixed Term Contract
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