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My globally known client are looking for a AWS DevOps Consultant to join their team on an initial 6 month project (PAYE)

Candidates must hold DV Clearance

Basic Qualifications

5+ years' experience as a technical consultant with Agile delivery experience 5+ years AWS experience, with a minimum of an associate AWS certification Knowledge of Infrastructure as Code (IaC) is preferred Strong presentation and knowledge sharing skills Experience with modern application architecture and software design Strong scripting skills (Python, Java, JavaScript, GoLang) Experience with automated code pipelines (Concourse, GitLab, Jenkins, GitHub) Demonstrated ability to think strategically about business, product, and technical challenges Able to communicate with customers and challenge thinking when needed Consulting skills to solve client problems and manage ambiguity

Soft Skills

Strong leadership and influence capabilities Excellent presentation and public speaking abilities Problem-solving and analytical thinking Strategic planning and execution Ability to translate technical concepts for non-technical audiences Strong stakeholder management skills Adaptability and willingness to learn

This role will require you to be on site in their London office

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

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Full Stack Java Developer

Contract | Hybrid

We're seeking a senior Full Stack Java Developer to join a high-performing engineering team delivering modern, cloud-native applications within an enterprise environment.

You'll play a key role in designing, building and deploying scalable systems across the full software development lifecycle, working within agile teams focused on quality, automation and continuous delivery.

Essential Skills & Experience5+ years' commercial Full Stack Engineering experience5 years strong React or React Native development expertiseProven Java and Spring Boot development experienceRESTful API design and developmentMicroservices architecture and distributed systemsSQL and database technologiesTest Driven Development (TDD) and Behaviour Driven Development (BDD)Unit, integration and automated testing practicesGitLab and CI/CD pipeline implementationOpenAPI Specification (OAS) and YAMLAWS cloud engineering experienceSecure coding and application security best practicesDevOps and Continuous Delivery methodologies

This is an excellent opportunity to work on large-scale digital transformation programmes using modern engineering practices and cloud technologies.

Apply now for immediate consideration, interviews to take place next week

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

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Threat Intelligence and Vulnerability Manager

6-Month Contract | Inside IR35 | London 1-2 Days Per Week

We're looking for an experienced security leader to take ownership of Threat Intelligence, Vulnerability Management, Threat Modelling, Security Testing and External Threat Hunting capabilities within a complex, high-profile environment.

This is a hands-on leadership role where you'll help identify emerging threats, uncover vulnerabilities, drive assurance activities, and provide the intelligence needed to strengthen enterprise security across IT, OT, physical and people security domains.

Key Experience

✅ Threat Intelligence & Threat Hunting
✅ Vulnerability Management & Risk Prioritisation
✅ Threat Modelling & Security Assurance
✅ Penetration Testing & Control Validation
✅ Security Operations & Incident Readiness
✅ Supplier & Security Testing Provider Management
✅ Executive-level Reporting & Stakeholder Engagement

Ideal Background

Threat Intelligence, Security Testing, Vulnerability Management or Threat Hunting leadership experienceStrong understanding of modern threat actors and attack techniquesExperience within regulated, critical infrastructure, energy, utilities or complex enterprise environmentsAbility to translate technical findings into business risk and action

A fantastic opportunity for an experienced security contractor to make an immediate impact in a highly visible role at the heart of a major security transformation programme.

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

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Cyber Security Engineer

Secure by Design & Security Platforms

6-Month Contract | Inside IR35 | London 1-2 Days Per Week

We're seeking a hands-on Cyber Security Engineer to embed Secure by Design principles across technology programmes while helping improve and optimise a suite of enterprise security platforms.

This is an excellent opportunity for a security professional who enjoys working across architecture, engineering and delivery teams, influencing projects from inception through to deployment while providing practical, pragmatic security guidance.

Key Experience

✅ Secure by Design & Security Assurance
✅ Security Architecture & Design Reviews
✅ Threat Modelling & Risk Identification
✅ Microsoft Security Stack (Identity, Endpoint, Cloud & Monitoring)
✅ Security Platform Configuration & Support
✅ Security Standards, Controls & Governance
✅ Vendor & Security Tool Management
✅ Stakeholder Engagement Across Engineering & Delivery Teams

What You'll Be Doing

Embed security into projects and programmes from day oneConduct security design reviews and lightweight threat modellingDrive security assurance throughout the delivery lifecycleEnhance configuration, adoption and effectiveness of security platformsSupport onboarding and implementation of new security toolingAct as a key liaison between Security, Architecture, Engineering and Delivery teamsDevelop practical standards, templates and guidance to improve secure-by-design outcomesManage platform-related requests, vendor engagement and continuous improvement initiatives

Ideal Background

Strong experience delivering Secure by Design outcomes within complex enterprise environmentsExperience reviewing solution architectures and identifying pragmatic security controlsHands-on experience with Microsoft security technologiesExposure to cloud, infrastructure, applications and integration securityExperience supporting or administering security tooling and platformsAbility to operate independently and quickly add value in a fast-paced environment

Desirable

Security Architecture or Engineering backgroundIAM technologies such as One Identity, Delinea or StrongDMExperience within regulated, utilities, energy or critical infrastructure environments

A great opportunity for a delivery-focused security contractor to influence major technology initiatives, improve security engineering practices and help drive a Secure by Design culture across a large and complex organisation.

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

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ROLE PURPOSE

Business Analysts are responsible for eliciting, analysing, and documenting business requirements for the PMP programme, ensuring solutions address operational needs and deliver measurable improvements.

PRINCIPAL ACCOUNTABILITIES

Engage with operational and enabling stakeholders to gather, analyse and clarify business requirements.Translate business needs into clear, structured artefacts including process maps, user stories and functional specifications.Ensure requirements are documented accurately, clearly and to agreed PMP standards.Support testing and acceptance activities by validating delivered solutions against approved business requirements.Assist with User Acceptance Testing (UAT), clarifying acceptance criteria and supporting issue resolution.Maintain traceability between requirements, delivered solutions and expected benefits.Support assurance and governance activity by ensuring documentation and evidence are audit‑ready.

Collaboration & Delivery Support

Work closely with Operational teams, Project Managers, Product Managers, Developers, Testers and IT Business Partners to ensure requirements are fully understood and correctly implemented.Support prioritisation of requirements in line with PMP objectives, constraints, risks and dependencies.Act as a point of clarification during development and testing cycles, resolving requirement queries.

Key Relationships

Internal: Product Managers, Developers, Testers, Project Managers, IT Business Partners, Operational Managers, Quality ManagerExternal: Clients Project Delivery Team, Third‑party suppliers (as required)

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PRINCIPAL ACCOUNTABILITIES

List up to 8 main accountabilities in order of importance that this role needs to do to ensure the role purpose is met. Outline what is done, to what, to achieve what.

Incorporate feature requests into a product roadmapReview and prioritise backlogDevelop user stories and define acceptance criteriaSet sprint goalsWrite acceptance testsPlan releases and upgradesFollow progress of work and address production issues during sprintsAnalyse preferences and requests of end usersRefine our agile methodology based on results and client feedbackKeep track of industry trends

COMPLEXITY, PLANNING AND TIME SPANS

Specify the areas over which this role has management responsibility.

Management of own workload and time.Coordinating delivery datesTracking and monitoring of Development workReviewing, collating, maintaining and highlighting changes to agreed feature requestsIdentifying, assessing and reporting product risks and issues, engaging with internal and external contacts where necessaryMaintaining financial controls and systems for recording, monitoring, forecasting and budgeting development expenditure and resourcesOrganising and facilitating release closures, as well as ensuring release notes and user guides are available at releaseMaintaining and communicating product management standards and best practicesAssisting in the maintenance, reviewing, and improving of departmental and product management office policies and proceduresProducing weekly and monthly performance/status reports for the IT SLT and Stakeholders

What time spans does the role operate under

The role operates all year round - development sprints will vary depending on requirements.

DIFFICULTIES AND DEMANDS OF THE ROLE

What are the most difficult parts of the job?

Balancing the changing demands of the business

What are the typical types of problems and challenges?

Ensuring all elements of the product development are aligned to meet tight and demanding deadlines.

Understanding and keeping on top of all the work that is going on across the business to ensure all work is aligned and doesn't' conflict.

How will these be resolved?

Strong organisation skills and management of time and information gathering skills.

Clear understanding of the systems and a clear understanding of what needs to be delivered.

TYPICAL DECISIONS MADE BY THE JOBHOLDER

List 2 examples of decisions the jobholder can take

How best to implement a request and what impact it has on delivery.

How to prioritise and weigh demands of requests from business based on impact and urgency.

List 2 examples of when decisions must be referred to the immediate manager or others.

When a serious issue will delay the product release significantly or increase costs

Where a major change in approach needs to be followed that will impact other teams working

FACTS AND FIGURES

Detail the main variables against which the role will be measured. These variables can include sales targets, costs, profits, turnover, etc.

Success will be measured successful by continued product development completed on time and on budget.

Principal Measures

Quality of project and request completionDelivery of client agreed commitmentsUptake of IT developments within the business.Amount of Re-work IT Development that needs to be undertook.

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

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Tier 1 Bank - Hybrid - DEX Manager - £100,000

Role - DEX Manager

Type - Permanent

Location - Hybrid / London - 3/4 days per week in a Liverpool Street office

Salary - £100,000 + Benefits

Role

The Digital Employee Experience (DEX) CoE delivers consistent and proactive IT services that support colleagues across EMEA with a smoother, more reliable digital experience. For employees, this means quicker resolutions, clearer communication and confidence that support will be available and effective whenever they raise a ticket, visit a TechBar or use our digital tools.The Operations Manager provides end to end operational ownership of end user services across EMEA, bringing Desktop Support, the London TechBar and TechBar enablement across EU EMEA into a single operating model. The role turns regional DEX strategy into local delivery that feels seamless for employees, ensuring issues are resolved quickly, knowledge is readily available and services continually improve based on real usage and feedbackThe Operations Manager also acts as service owner for Microsoft 365 and other core productivity platforms, ensuring they remain stable, well governed and easy to adopt. Partnering with DEX Insights, the role converts operational data into practical action so that trends are addressed early, priorities are clear and improvements are measurable for both ITSD and the colleagues we support.The role involves occasional travel across EMEA as required to support regional alignment and governance.

Tasks

Leadership & People Development

Execute the EMEA DEX operating model and TechBar standards through site operating practices, ensuring consistent adoption across the regionLead Desktop and TechBar Team Leads and build a culture of professionalism, accountability and continuous improvementDefine the workforce strategy including structure, recruitment, succession planning and capability development, and embed SME roles and the DEX skills matrixProvide coaching and mentoring to frontline leaders and senior engineers to strengthen leadership capability

Agile Facilitation & Continuous Improvement

Champion agile delivery across Desktop and TechBar squads and ensure ceremonies, backlog prioritisation and iterative improvements are fully embeddedOwn the operational improvement backlog to reduce recurring issues, remove workarounds and prevent the re‑introduction of known risksDrive adoption of Knowledge‑Centred Service (KCS) to improve knowledge creation, maintenance and reusePartner with DEX Insights to prioritise improvements based on data, user sentiment and trend analysis

Operational Oversight

Take accountability for BAU operations and incident recovery across Desktop and TechBar and act as the senior escalation point for critical incidentsMaintain consistent service standards across walk‑up and remote channels and introduce ServiceNow Walk‑Up appointment scheduling where appropriateMaintain compliance with enterprise standards, policies and risk controls across all locationsEnsure compliance , monitor service performance and drive corrective actions to meet SLAs and KPIs.

Resource & Service Management

Set the regional coverage model for Desktop and TechBar and balance capacity, skills and demand across sitesOversee the EUC asset lifecycle, including procurement, stock management and disposal, through local teams and shared playbooks

Stakeholder Engagement

Build strong relationships with senior stakeholders, Infrastructure teams, resolver groups and vendors and represent DEX in governance and planning forumsCommunicate proactively with end users and senior leadership to promote adoption and training of EUC capabilities

Governance, Reporting & Insights

Standardise and monitor KPIs and customer metrics across EMEA and publish an operational scorecard with DEX InsightsProvide executive‑level reporting on performance, risks and strategic initiatives and maintain audit readiness and regulatory complianceUse DEX Insights dashboards to track workloads, trends and benefit realisation and demonstrate the impact of improvements

Microsoft 365 Service Ownership

Own the operation of M365 end‑user services, including Teams, Outlook, SharePoint, OneDrive and Office apps, with disciplined change management, feature enablement and adoptionPartner with Platform Engineering, Infrastructure and IT Security to maintain service stability, resilience and performance and plan controlled rollouts and communications

Proactive & Data‑Driven Operations

Ensure full operational use of ServiceNow across incidents, requests, walk‑up, problem and knowledge, supported by dashboards for workload and trend monitoring

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

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Solutions Architect - Tier 1 Bank - Canary Wharf

Role - Application Architect

Duration - 6 months with very likely extension

Location - Hybrid / Canary Wharf - 3 days per week in a Canary Wharf office

Rate - £600 per day (Inside IR35)

Experience -

In depth understanding of Object Orientated programming concepts as well as of the full Software Development Life Cycle.Good understanding of MS .NET Framework environments.Knowledge and experience of Agile methodologyKnowledge of Cloud and AI technologies that can be adopted into the workplaceExtensive experience working as a software and solutions architect.Experience in designing of high-level concepts for software solutions.Experience in development of Azure cloud-based as well as on-prem solutions.DevOps and SCRUM experienceExperience in Cloud migration planning and execution

Tasks -

Create and improve architectural standards for on premise and azure cloud software products, develop cloud migration procedures and guidelines.Assist in cloud migration projects, assess readiness and dependencies, optimize for the Cloud.Create and review blueprints for software products, provide guidance on improving architecture.Coding mission critical parts and performing code reviews.Assist on integrating AI technologies to improve existing systems.Ensure that applications are in line with compliance and regulatory standards and conduct regular security assessments of these applications.Technical writing (creating related documentation)Assist developers with any architecture related issues and queries.

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

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Graphic Design, PowerPoint, Content Specialist Role - Hybrid / Canary Wharf - 6 month Contract - Banking

Role - Graphic Design, PowerPoint, Content Specialist

Industry - Banking / Finance

Duration - 6 months with very likely extension

Location - Remote / Canary Wharf - 3 days per week in a Canary Wharf office, London

Rate - £416 per day (Inside IR35)

Tasks

The candidate will be responsible for creating visually stunning PowerPoint presentations, designing documents, and editing visually appealing videos. Additionally, The candidate will be responsible for writing clear and concise technical documents and creating templates for a Word and PowerPoint presentations.As a Graphic Designer, The candidate will use expertise in design software such as Photoshop, Illustrator, and InDesign to create graphics that are both aesthetically pleasing and informative. The candidate will be tasked with creating a variety of visual materials.As a Content Publisher, The candidate will be looking after the location, version, and design for varieties of technical/non-technical documents/videos/graphics which exist or to be published in Development team.

Duties

Create visually stunning PowerPoint presentations and design documentsEdit visually appealing videosCreate various visual materialsWrite clear, concise, engaging, and informative technical documents, including user manuals, reference guides, and release notes.Create templates for Word and PowerPoint presentationsUse expertise in design software such as Photoshop, Illustrator, and InDesign to create informative and aesthetic graphicsOrganise and maintain documentation in a logical and accessible manner, using appropriate tools and systemsEnsure documentation complies with industry standards, regulatory requirements, and company branding guidelinesReview and edit existing documentsUse Lucid chart and Visio to create diagrams, flowcharts, and other visual representations of dataUse expertise in design software such as Photoshop, Illustrator, and InDesign to create informative and aesthetic graphicsCreate diagrams, flowcharts, and other visual aids to enhance understanding of technical concepts

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

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Automation Test Architect (Contract)

Hybrid

London

We're supporting a major technology transformation programme and are seeking an experienced Integration Test Architect to define and lead testing strategy across a complex microservices and distributed systems landscape.

This is a senior, hands-on architecture role requiring deep expertise in contract testing, integration testing and quality engineering across multiple technology stacks.

What You'll Be DoingDefine and own the end-to-end integration testing strategyDesign and implement scalable automated test frameworksLead adoption of consumer-driven contract testing using PactWork closely with architects, developers and platform teams to improve quality across distributed systemsEstablish testing standards, governance and best practice across multiple delivery teamsIdentify integration risks and ensure robust coverage across services and APIsMentor engineers and drive a quality-first engineering cultureEssential SkillsProven experience operating at Architect or Principal Test Architect levelExtensive experience in Integration Testing and Contract TestingStrong hands-on experience with PactDevelopment background in Java, Python and/or C++Experience testing microservices, APIs and distributed systemsStrong understanding of CI/CD and automated testing practicesAbility to influence senior stakeholders and engineering leadership teamsNice to HaveAWS cloud experienceEvent-driven architecture experiencePerformance and non-functional testing expertiseExperience within large-scale enterprise environmentsThe Candidate

You'll be a highly experienced consultant who can operate strategically at architecture level whilst remaining technically credible and hands-on when required. You'll have a track record of delivering testing strategies for complex integration-heavy environments and be recognised as a subject matter expert in modern quality engineering practices.

Automation Architect | Test Architect | Contract Testing | Pact | Java | Python | C++ | AWS | Microservices | QA Architect | Quality Engineering

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

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