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...

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...

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...

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...

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...

Staff Network Engineer

Added 09/04/2026

Staff Network EngineerSkills, Experience, and Requirements:Education & Experience:Bachelor's degree in Electrical/Computer Engineering (preferred).10+ years of professional experience in a large enterprise or service provider environment.Professional networking certifications such as CCNA, CCNP, CCIE (or equivalent) are a plus.Public cloud certifications in advanced networking or cloud network engineering are a plus.Technical Skills:Service Provider Networking:Expertise in ISIS, MPLS, and Segment Routing.Strong proficiency with BGP routing and route reflectors.Advanced knowledge in Multi-VRF environments with traffic shaping and QoS.IP Address Management, DNS, and DHCP.High availability, failover, and redundant network configurations.Network Security Design Considerations:Knowledge of firewalls, VPNs, and network security protocols.Additional Services:Experience with TACACS, ISE, and...

Staff Network Engineer

Added 09/04/2026

Staff Network EngineerThis role is for a Staff Network Engineer who will play a major part in designing and building high‑performance network systems that support our nationwide 5G infrastructure. The position is both strategic and very hands‑on - you'll lead complex engineering work, guide upgrades, and ensure the network continues to scale and perform reliably as our technology evolves.One of the biggest initiatives in this role is a large transformation project: consolidating 38 data centers down to 11 by building an MPLS and Segment Routing backbone. This involves re‑architecting our routing environment to make the network more flexible, robust, and...

Staff Network Engineer

Added 09/04/2026

We're seeking a Staff Network Engineer to design and deploy high‑performance network systems supporting a nationwide 5G infrastructure. This role focuses on modernizing routing architecture, including consolidating 38 data centers into 11 using an MPLS/Segment Routing backbone. You'll lead major engineering initiatives, drive network optimization, and ensure a resilient, scalable, and future‑ready network. ResponsibilitiesAnalyze network/service specifications and define architecture for complex multi‑VRF environments.Design, plan, and implement large‑scale service‑provider network configurations.Create high‑level and low‑level network diagrams for engineering solutions.Lead network testing, validation, and integration to ensure end‑to‑end performance.Provide hands‑on support for 24x7 production operations.Drive upgrades, enhancements, and new feature deployments across...

Staff Network Engineer

Added 31/03/2026

Job Title: Staff Network Engineer Location: Littleton, CO Contract: 12+ MonthsJob Summary:We are seeking a Staff Network Engineer to lead the design, engineering, and deployment of scalable, high-performance network systems for our nationwide 5G infrastructure. You will be responsible for overseeing complex engineering initiatives, including upgrades and strategic network improvements. A primary focus will be optimizing routing infrastructure by consolidating 38 data centers into 11 through an MPLS/Segment Routing backbone. Your work will ensure the network is flexible, robust, and aligned with the needs of a rapidly evolving digital landscape. As a technical leader, you will collaborate with cross-functional teams...

Staff Network Engineer

Added 27/03/2026

STAFF NETWORK ENGINEERBoost Mobile · Wireless Technology · Full-Time DEPARTMENTWireless TechnologyLEVELStaff / Senior ICLOCATIONNationwide (USA)EXPERIENCE10+ Years About EchoStarEchoStar is reimagining the future of connectivity. Our business reach spans satellite television service, live-streaming and on-demand programming, smart home installation services, mobile plans and products. Today, our brands include Boost Mobile, DISH TV, Gen Mobile, Hughes, and Sling TV.Department OverviewOur Wireless Technology team is pioneering the future of connectivity. We are developing and enhancing a unique hybrid network model - combining our advanced, cloud-native 5G core with the nationwide reach of our partners. This approach ensures our network is flexible and powerful,...

Staff Program Manager

Added 26/03/2026

Staff Program Manager - IT Infrastructure & OperationsColorado-specific job specification prepared from the original DISH role detailsLocationWork ArrangementEmployment TypeColoradoHybrid or onsite based on business needFull-Time About the RoleDISH is seeking a Staff Program Manager to join the IT PMO and broader IT organization, supporting key initiatives across Infrastructure and Operations. This role is responsible for leading complex IT programs from planning through execution, ensuring projects are delivered on time, within scope, and aligned with company objectives. It is a strong fit for a program or project leader with a solid IT foundation who is ready to take on broader ownership...