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...

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...

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...

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...

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...

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...

Senior Software Engineer/Data Platform Engineer (Databricks, Graph, APIs)

Added 30/04/2026

Senior Software Engineer / Data Platform Engineer (Databricks, Graph, APIs)Location: Philadelphia, PA The team sits within the network technology organisation and is responsible for building advanced data platforms that support digital twin capabilities across the access network. The group combines network design data, telemetry, mapping technologies, and graph intelligence to improve troubleshooting, planning, operational efficiency, and market competitiveness.The team works on highly scalable engineering products including large data pipelines, graph databases, APIs, and mapping platforms. Their work enables smarter network decisions, faster fault resolution, and better use of operational resources.This is a technically strong team focused on solving complex real-world...

Senior Software/Data Engineer

Added 30/04/2026

The TeamThe team sits within network technology organisation, building advanced data platforms that support digital twin capabilities across the access network. The group combines network design data, telemetry, mapping technologies, and large-scale engineering systems to improve troubleshooting, planning, operational efficiency, and competitive market analysis.The team develops highly scalable platforms that ingest and process complex operational data, expose intelligence through APIs, and enable smarter decision-making across the business.This is a technically strong team solving real-world infrastructure challenges using modern software engineering and data technologies.ResponsibilitiesDesign, build, and maintain scalable ETL / ELT pipelines processing large enterprise datasets.Develop robust data products using Databricks,...

Controls Software Engineer

Added 30/04/2026

We are seeking experienced Controls Software Engineers to support a large-scale, greenfield automation program within the material handling and logistics industry. This initiative is focused on building standardized control systems for high-throughput industrial environments, enabling repeatable deployment across multiple facilities.This is a hands-on development role, working on machine control software and industrial systems - not maintenance or support. The team is building new control applications from a defined architecture and requires engineers who can execute clean, production-quality code.What You'll Be DoingDevelop machine control logic for PLC and IPC-based automation systemsWork with IEC 61131-3 programming languages (Structured Text, Function Block, Ladder)Build...

DevOps Software Engineer - Contract

Added 17/04/2026

Software Engineer (Full-Stack) - 3-5 Years ExperienceWe're looking for a proactive software engineer to contribute to the development and evolution of our platform. This position suits a full-stack developer who is particularly strong on the backend and has familiarity with DevOps practices and CI/CD pipelines. What You'll DoContribute to the design and implementation of new functionality within the Release Orchestrator applicationDevelop and improve user-facing features using React, Next.js, and TypeScriptBuild and support backend services and APIs using Python (FastAPI or similar frameworks)Connect the platform with external systems such as CI/CD tools (e.g., Jenkins, CloudBees), GitHub, and other engineering utilitiesImplement and...

Software / Controls Engineer

Added 13/04/2026

Software / Controls Engineer Role SummaryThe software/controls engineers are responsible for bringing the custom automation equipment to life. The mechanical team designs and builds the physical machines; these engineers wire them up, program the PLCs, configure the vision systems, program the robots, design the HMI screens, and debug everything until the equipment runs production-ready. This is completely greenfield work. There is currently little to no PLC code on the machines, no safety guarding, and minimal controls. These engineers will write everything from scratch.A key deliverable for this group is developing vision-based in-process quality inspection setups to replace $130K microscopes currently...

Software / Controls Engineer

Added 13/04/2026

Software / Controls Engineer Role SummaryThe software/controls engineers are responsible for bringing the custom automation equipment to life. The mechanical team designs and builds the physical machines; these engineers wire them up, program the PLCs, configure the vision systems, program the robots, design the HMI screens, and debug everything until the equipment runs production-ready. This is completely greenfield work. There is currently little to no PLC code on the machines, no safety guarding, and minimal controls. These engineers will write everything from scratch.A key deliverable for this group is developing vision-based in-process quality inspection setups to replace $130K microscopes currently...