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...

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...

Software Engineering Tech Lead - AI / Agentic Systems

Added 02/06/2026

Software Engineering Tech Lead - Python | Azure | AI / Agentic Systems Contract | London - Hybrid 1-2 days a month in the office if requiredWe're looking for a hands-on Software Engineering Tech Lead to drive the design and delivery of modern, AI-enabled platforms. This is a high-impact role combining deep engineering expertise with technical leadership across Python, Azure, and next-gen agentic systems.Key ResponsibilitiesLead the design and delivery of scalable, production-grade software systemsStay hands-on with coding in Python, setting engineering standards and best practicesArchitect and build AI / agentic solutions (LLM orchestration, tool integration, RAG pipelines)Define and implement robust...

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...

AWS AI Platform Lead- Contract

Added 07/05/2026

AWS Platform Engineering Lead - AI projectMy client is a London based investment manager looking for a AWS AI Platform Engineering Lead to drive the evolution of the path to production using AI-enabled tooling and modern AWS-native platforms.This role will focus on building scalable developer platforms, embedding policy-as-code, and introducing AI-driven automation across the SDLC to improve speed, governance, and developer experience. Key ResponsibilitiesDesign and build AWS-native developer platformsImplement policy-as-code frameworks (OPA, AWS Config)Embed governance into CI/CD (PR gates, compliance checks, pipeline guardrails)Integrate AI tooling for code review, security scanning, and deployment decisionsDefine and enforce golden paths across onboarding, CI/CD,...

2nd Line Engineer- Hybrid (Outside IR35)

Added 20/04/2026

Essential RequirementsReliability and infrastructure services. Focus on patching of vulnerabilities with our digital Windows and WMWare environment within our data centers and Cloud environments. Service Scope and DeliverablesSystem and application patching on the following technologies:Citrix.Hardware.VMWare.Windows Server.M365.Core data centre services such as AD, Group Policy, DNS, VPN, AV, MFA, WSUS, SCCM, monitoring tools etc.SAN storage and backup.Multi Factor Authentication.MS AzureVulnerability assessment and patch identification.Patch prioritisation and risk scoringPatching using technologies WSUS and Tanium.Testing and deploying patching to ensure they do not impact productionConfirmation and validation of successful patch deploymentCreation and input into RFC process as part of ITSMGCS is acting as...

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...

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...

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...

Full Stack Developer (.Net/JavaScript)

Added 23/04/2026

Job Title: Senior .NET/JavaScript Full Stack Developer Location: Limerick (Hybrid 2 days flexible) Type: 6 Months contract (with possible extension)Overview: We are seeking a highly skilled Senior Full Stack Developer with strong expertise in .NET and JavaScript to join our dynamic engineering team. The ideal candidate will have a proven track record of building scalable web applications and delivering high-quality code across the full stack. Key Responsibilities:Design, develop, and maintain full-stack web applications using .NET (C#) and JavaScript frameworks (e.g., React, Angular, or Vue).Collaborate with cross-functional teams to define, design, and ship new features.Ensure the performance, quality, and responsiveness of...

Senior AWS Big Data Architect (Cloud Data Platforms & Streaming Analytics)

Added 12/05/2026

Senior AWS Big Data Architect (Cloud Data Platforms & Streaming Analytics)Location: Chicago Work Arrangement: Hybrid Employment Type: ContractOverviewWe are seeking a highly specialized AWS Big Data Architect to lead the design and implementation of enterprise-scale cloud data platforms and real-time analytics solutions. This role requires deep expertise across AWS data services, distributed processing frameworks, streaming technologies, and large-scale data architecture.The ideal candidate will have extensive experience building modern lakehouse architectures, optimizing high-volume ETL pipelines, and enabling scalable analytics and machine learning workloads within cloud-native environments.Key ResponsibilitiesArchitect and implement scalable big data solutions on AWSDesign modern data lake and lakehouse architecturesBuild...

AWS Big Data Architect

Added 12/05/2026

AWS Big Data ArchitectLocation: Chicago Work Arrangement: Hybrid Employment Type: ContractPosition SummaryWe are looking for an AWS Big Data Architect to support cloud data initiatives and enterprise analytics projects. This role will focus on designing scalable data solutions, supporting cloud modernization efforts, and collaborating with engineering teams to improve data accessibility and performance.The ideal candidate should have experience working with AWS data services, data integration tools, and modern cloud-based architectures.ResponsibilitiesDesign and support AWS-based data platforms and analytics solutionsDevelop scalable ETL and data integration pipelinesCollaborate with engineering and business teams to gather data requirementsSupport data migration and cloud transformation initiativesOptimize data...

Data Engineer - AWS

Added 11/05/2026

Data Engineer - AWS Contract: 12 Months Location: London (Liverpool Street) Start Date: 1 June A global enterprise organisation within sustainability and operations is seeking an experienced AWS Data Engineer for a 12‑month contract based in London.This is a hands‑on role focused on building and supporting data infrastructure used for energy, utilities and sustainability analytics across large‑scale operations. Key responsibilities:Designing and building AWS‑based data pipelines (Lambda, Glue, S3)Developing and maintaining API integrations with external vendorsSupporting analytics dashboards and reporting use casesImplementing automated alerting and anomaly detectionWorking with utility billing, smart metering and sustainability dataEnsuring compliance with enterprise security and data...

AWS Security Architect (Cloud)

Added 27/04/2026

AWS Security Architect (Contract)Location: Remote (UK-based)Clearance: SC Cleared (Required) - Must have active clearanceContract Type: Day Rate ContractOverviewWe are seeking an experienced AWS Security Architect for my client to support the enhancement and optimisation of cloud security across a large-scale AWS environment. You will work closely with platform engineering teams to strengthen security controls, improve tooling, and ensure best practice adoption across the AWS estate.Key ResponsibilitiesDesign and implement secure AWS architectures aligned with industry best practicesCollaborate with platform engineering teams to embed security into cloud-native solutionsAssess and improve existing AWS security tools and controlsEnhance the organisation's cloud security posture through...