(2nd Line Infrastructure Support)

Added 20/04/2026

One of our clients is seeking an experienced Patch & Vulnerability Engineer to support a large-scale Windows, VMware, Citrix, Azure hybrid environment, delivering secure and controlled enterprise patching across on-prem and cloud infrastructure.📍 Preston (Hybrid - 2-3 days onsite) | 📅 12-Month Contract (Outside IR 35) Key SkillsVulnerability management & risk-based patch life cycle (assessment, prioritisation, remediation, validation)WSUS & Tanium for enterprise patch deployment (Must Have)Windows Server, VMware, CitrixAzure & M365 supportActive Directory, Group Policy, DNS, VPN, MFAAV / endpoint security & SAN awarenessITIL / ITSM change management (RFCs)Patch testing, deployment & validation in production environmentsSummaryExcellent opportunity for an infrastructure...

OT Cyber Security Engineer (Outside IR35)

Added 07/04/2026

OT Cyber Security Engineer - Contract (Outside IR35)Location: UK (Remote with occasional travel) Duration: 12 Months Rate: Competitive (Outside IR35)The OpportunityWe're supporting a major programme within the OT / Industrial Cyber Security space, delivering security improvements across critical environments.This is a project focused contract, ideal for an experienced OT Cyber Security Engineer who has worked within live industrial environments and understands the challenges of securing legacy and operational systems.Key ResponsibilitiesDeliver OT security improvements across industrial environmentsSupport security assessments, risk identification, and remediation activitiesWork closely with engineering and operational teams to implement controlsContribute to network segmentation, asset visibility, and monitoring initiativesSupport...

Lead Software Engineer- outside IR35

Added 18/03/2026

Lead Software Engineer (Backend) JavaScript/TypeScript, AWS, Kafka Outside IR35 ContractMy London based client is urgently looking for an experienced Lead Software Engineer with a strong back-end focus to lead the build and evolution of scalable, cloud-native services. You'll set technical direction, mentor engineers, and stay hands-on delivering production code.What you'll do:Lead backend design and development (Node.js, TypeScript/JavaScript)Build and operate event-driven microservices using KafkaOwn AWS-based delivery (scalability, performance, reliability, security)Drive engineering standards: code reviews, testing strategy, CI/CD, observabilityPartner with Product/Architecture to translate requirements into robust solutionsKey skills:Strong commercial backend experience with JavaScript/TypeScript (Node.js)Kafka experience (event-driven systems, distributed messaging)Strong AWS experience across...

Staff Engineer- Backend JavaScript -outside IR35

Added 28/02/2026

Staff Engineer- Backend JavaScript (Node.js / TypeScript) Contract - Outside IR35Location: London / Hybrid (once every two weeks) Contract: Outside IR35 Duration: 6 months initial (extension likely) Our client, an innovative and forward‑thinking technology business, is looking for a Backend JavaScript Staff Engineer to join a high‑performing engineering team. This is a fantastic opportunity for a highly experienced, hands‑on backend engineer who enjoys solving complex technical problems, building scalable systems, and providing technical leadership across teams.You will play a key role in shaping backend architecture, improving platform reliability and performance, and raising engineering standards while remaining deeply involved in hands‑on...

Fractional CISO - FinTech (Contract / Outside IR35)

Added 07/04/2026

Fractional CISO - FinTech (Contract / Outside IR35)Location: London (Fully Remote) Engagement: Fractional (2-3 days per week) Duration: 6-12 Months Rate: £1000pd+ (Outside IR35)The OpportunityGCS Cyber are partnering with a rapidly growing PE backed FinTech firm as they scale their security capability and mature their overall cyber posture.This is a Fractional CISO engagement, ideal for a senior security leader who can provide strategic direction while remaining hands-on where needed.You'll be working closely with the executive team, helping shape security strategy in line with business growth, regulatory expectations, and investor confidence.Key ResponsibilitiesDefine and lead the cyber security strategy and roadmapEngage with...

Software Engineering Lead- Javascript, AWS- outside IR35

Added 17/03/2026

Software Engineering Lead - Backend (JavaScript / TypeScript, Node.js, AWS, Kafka)Outside IR35Remote with 2 days a month in the office in LondonWe're looking for an experienced Software Engineering Lead with a strong backend development background to lead the delivery of scalable, cloud‑native systems.Key skills:Strong commercial experience with JavaScript, TypeScript, and Node.jsProven experience building event‑driven systems using KafkaStrong AWS experience across modern cloud servicesBackground designing and operating microservices / distributed systemsHands‑on technical leader with experience mentoring engineers and leading deliveryRole overview:Lead backend architecture and development while remaining hands‑onDrive best practices through code reviews and technical leadershipWork closely with Product, DevOps, and...

Project Manager (Outside Ir35)

Added 17/02/2026

My Utilities client are looking for an experience Project Manager to join their team on an initial 6 month outside ir35 contract roleThe role will require you to be on site 2/3 days a week in their Guildford Office Key responsibilities/Experience Experience delivering complex projects, specialising in financial processes, requirements gathering, and end-to-end delivery.Strong background partnering with Finance and Commercial teams to manage sales ledgers, oversee invoicing, develop robust financial business cases, and report to Senior Leadership teams.Proven experience engaging Sales teams and customers to capture new requirements, produce competitive bids, negotiate commercial terms, and consistently achieve revenue and delivery...

Business Analyst - MS Purview - Outside ir35

Added 16/02/2026

Role: Business Analyst - Microsoft Purview Duration: 6-month rolling contract Rate: Negotiable DOE - Outside IR35 Location: Preston - HybridGCS Cyber are supporting a large organisation enhancing its data governance and data protection capabilities across their Microsoft 365 environment.They are now looking for an experienced Business Analyst to help shape data classification standards, strengthen data loss prevention controls, and coordinate stakeholder engagement across multiple business functions.Must have: * Strong Business Analysis background with experience across IT systems * Experience with Microsoft Purview * Experience defining or refining business rules within the M365 suite * Strong workshop planning, stakeholder engagement and...

Pilot Line Manufacturing Engineer

Added 07/04/2026

Manufacturing Engineer - Line Support Shakopee, MN | OnsiteWe are seeking a hands-on Contract Manufacturing Engineer - Line Support to support a pilot manufacturing line producing a new high-technology product in Shakopee, Minnesota. This is a fully onsite role focused on keeping the line running, stabilizing new equipment, troubleshooting production issues, and supporting a fast-moving pilot environment.This engineer will be embedded directly on the production floor and will work closely with operators, technicians, line supervision, manufacturing engineering, quality, and maintenance. The right person will be comfortable in a high-change manufacturing setting where equipment, processes, and documentation are still evolving.Key Responsibilities:Provide...

1st Line support Engineer- Onsite

Added 01/04/2026

Essential RequirementsBasic understanding of IT fundamentals (Windows OS, Office 365, email systems)Excellent telephone manner and customer service skillsStrong communication skills with the ability to explain technical concepts to non-technical usersPatient and empathetic approach when dealing with frustrated usersGood organisational skills and attention to detailAbility to multi-task and work in a busy environmentWillingness to learn and ask questions when unsureAvailability to start at short notice. Desirable ExperiencePrevious experience in a customer service or support roleExperience using ticketing systemsBasic knowledge of Active DirectoryFamiliarity with remote support toolsAny IT certifications (CompTIA A+, Microsoft, etc.)GCS is acting as an Employment Business in relation to...

Senior Backend JavaScript Developer Outisde IR35

Added 22/02/2026

Senior Backend JavaScript Developer Outisde IR35 Remote and once in the London office every 2 weeksOur client, an innovative and forward-thinking technology business, is looking for a Senior Backend JavaScript Developer to join their growing engineering team.This is a fantastic opportunity for a seasoned developer who thrives on solving complex problems, building scalable systems, and mentoring others in a collaborative, agile environment.You will play a pivotal role in shaping the Back End architecture, delivering high-quality code, and ensuring the platform continues to perform at scale as the business expands globally.Key skills Strong proficiency in JavaScript/TypeScript with proven Back End development...

IT Compliance Support Engineer - Hybrid - Banking

Added 17/02/2026

IT Compliance Support Engineer - Hybrid / Canary Wharf - 6 month Contract - Banking Tier 1 Bank - Regulatory Reporting TeamRole - IT Compliance Support EngineerDuration - 6 months with very likely extensionLocation - Hybrid / Canary Wharf - 3 days per week in a Canary Wharf officeRate - £415 per day (Inside IR35)Role IT Compliance Support Engineer to join a development team and act as the primary liaison with internal/external audit, compliance, and IT security counterparts. This role combines governance with technical capability-supporting audits, demonstrating IT controls, and troubleshooting or coordinating resolution of issues across Azure DevOps pipelines,...

Collibra Integration Engineer Role - Hybrid - Banking

Added 17/02/2026

Collibra Integration Engineer Role - Hybrid / Canary Wharf - 6 month Contract - Banking Tier 1 Bank - Regulatory Reporting TeamRole - Collibra Integration EngineerDuration - 6 months with very likely extensionLocation - Hybrid / Canary Wharf - 3 days per week in a Canary Wharf officeRate - £415 per day (inside IR35)TasksAdminister and maintain the Collibra platform from an IT engineering perspective, including configuration, health monitoring, troubleshooting, and performance management across EMEA environments.Configure, schedule, and manage integrations using DIP/CDQ, EDGE, and Lineage Harvester, ensuring consistent ingestion of metadata, schemas, and lineage from multiple data sources.Perform connectivity and prerequisite...

C# Developer Role - Hybrid - Banking

Added 03/06/2026

C# Developer Role - Hybrid / Liverpool street - 6 month Contract - Banking Role - C# Developer (T/SQL, PL/SQL)Duration - 6 months with very likely extensionLocation - Hybrid / Liverpool Street (London) - 3 days per week in a Liverpool Street officeRate - £690 per day (Inside IR35)Tech StackC#SQLOracle TasksTasks include understanding business requirements, designing applications, business data analysis, programming in Visual C#.NET using both Oracle and SQL Server database, Unit testing, Quality Assurance (QA), Implementation, Production and Disaster Recovery environments supporting users and preparing documents.Along with the application development, this role will also include supporting the existing C#...

RabbitMQ SME | Sheffield (Hybrid)

Added 27/05/2026

🚀 One of our leading banking clients is looking for an experienced RabbitMQ SME to join a large-scale PAM & Security transformation programme.📍 Sheffield, UK (Hybrid)📅 ASAP Start📄 Contract until Nov 2026 Key ResponsibilitiesDeploy and manage RabbitMQ clustersBuild resilient multi-site messaging solutionsWork with Kubernetes, Docker & HELMAutomate deployments using Python & PowerShellSupport secure enterprise infrastructure environmentsSkills Required✔ RabbitMQ (Queues, Exchanges, Shovels, Clustering)✔ Kubernetes & Docker✔ Python & PowerShell✔ Linux / Windows environmentsIdeal for a senior infrastructure/platform engineer with strong messaging, automation and DevOps expertise.📩 Apply now or reach out directly for more information.GCS is acting as an Employment Business in...