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Contractor 52
Information Technology design engineer

52 design engineer jobs found

CL
Sep 05, 2026  
Test Engineer
Location: London Clearance: SC-cleared / Non-SC Start: Immediate KEY RESPONSIBILITIES Own test design and execution for assigned workstreams across the client's estate. Review requirements, HLDs, LLDs, and project documentation to identify test scenarios and coverage gaps. Produce and peer-review test scripts, test cases, and execution evidence to sign-off standard. Lead defect triage, root-cause analysis, and retest coordination across delivery, design, engineering, and operations teams. Validate System Integration, Functional, Non-Functional, Disaster Recovery, and Operational Acceptance test coverage before execution windows open. Provide technical guidance and mentoring to Test Engineers; raise the standard of scripts, evidence, and defect records across the workstream. Maintain ALM discipline: test case structure, requirements traceability, defect lifecycle, and reporting accuracy. Execute and lead complex testing across routers, switches, firewalls, hosting, data...
IR35 Status:
Unknown Status

CV-Library London, UK Contractor
CL
Sep 16, 2026  
Lead Data Quality & Platform Engineer
Lead Data Quality & Platform Engineer London 5 days in the office Duration: 12-Month Contract Rate: £500/day (Inside IR35) A top-tier firm is seeking an experienced Data Quality & Platform Engineer to shape, govern, and optimise core data environments for a high-profile enterprise client. In this pivotal role, you will go beyond simple pipeline building. You will be responsible for defining how data flows across heterogeneous sources, establishing durable data quality controls, mapping end-to-end lineage, and ensuring datasets are highly reliable, auditable, and performance-tuned. What You Will Do Design, build, and maintain preventive, detective, and corrective DQ controls (profiling, rule definition, thresholding, automated alerting, and root-cause remediation). Craft complex SQL transformations, optimize query performance, handle advanced window functions, and design conformed dimensional models for curated platform layers. Map end-to-end data flows from...
IR35 Status:
Inside IR35

CV-Library City of London, London Contractor
CL
Sep 16, 2026  
Go Lang Developer
Job Title:GoLang Developer Location: Burgess Hill Rate: £280-£290 a day Start Date: Mid September Job Type: Contract 12 months Role Overview We are looking for an experienced Senior Software Engineer with strong hands-on Golang coding experience and solid Java development skills to join a project for a leading financial services organisation. A key requirement for this role is practical experience using AI tools as part of the software development lifecycle, including leveraging AI-assisted development tools to improve coding productivity, debugging, testing, documentation and overall engineering efficiency. Key Skills & Experience Mandatory: Strong hands-on experience with Golang (Go) Strong experience with Java Approximately 10 years of overall software engineering experience At least 5 years of relevant development experience Strong software engineering and problem-solving skills Experience developing and maintaining production-grade applications Hands-on...
IR35 Status:
Unknown Status

CV-Library Burgess Hill, West Sussex Contractor
CL
Sep 16, 2026  
Wintel Engineer
Wintel Engineer Length: Until May 2027 Rate: £725 per day via umbrella Location: Corsham (3 days per week onsite) ***CANDIDATES MUST HOLD ACTIVE SC CLERANCE OR BE ELIGIBLE TO UNDERGO SC CLEARANCE*** Overview The WINTEL Engineer will deliver hands-on engineering support to the OpNET programme, designing, building, and maintaining Windows-based enterprise infrastructure platforms. The role focuses on Microsoft server technologies and enterprise services within highly virtualised environments, supporting full lifecycle delivery from installation and configuration through to integration, testing, and operational support within secure or regulated environments. Main Responsibilities will include, but are not limited to: Install, configure, and maintain Windows Server operating systems across enterprise environments. Deploy and support Microsoft enterprise services including Active Directory, Group Policy, Exchange, SQL, Skype, WSUS, PKI, and supporting applications....
IR35 Status:
Unknown Status

CV-Library Corsham, Wiltshire Contractor
CL
Sep 16, 2026  
RF Network Engineer
Senior Telecoms & Technical Assurance Consultant Contract: 6 months rolling Location: Fully remote The Role We are seeking an experienced Senior Telecoms & Technical Assurance Consultant to provide independent technical assurance across a complex communications system. You will assess vendor designs, challenge technical assumptions, identify engineering risks and determine whether proposed solutions are technically mature, feasible and suitable for the operational environment. This is a broad technical assurance role covering RF, cellular communications, mission-critical services, embedded software, networking and telecommunications electronics, alongside security, aviation safety, certification and project management stakeholders. Key Responsibilities Provide independent technical assurance of communications systems and vendor solutions. Review and challenge supplier architectures, designs and technical documentation. Assess RF and antenna designs, including link...
IR35 Status:
Unknown Status

CV-Library United Kingdom Contractor
CL
Sep 16, 2026  
Cloud Security Engineer
Role Title: Cloud Security Engineer Duration: contract to run until 30/11/2026 Location: Knutsford. Hybrid, 3 days per week onsite Rate: up to £630.20 p/d Umbrella inside IR35 Role purpose / summary We are seeking an experienced and highly motivated Security Cloud Engineer to play a critical role in the design, implementation, automation, and security of our multi-cloud infrastructure. This position is ideal for a cloud professional with a strong security mindset who is passionate about protecting cloud-native environments, driving automation, and supporting secure digital transformation initiatives. As a Security Cloud Engineer, you will help shape the future of our cloud security capability by developing and enhancing secure cloud platforms across AWS, Microsoft Azure, and Google Cloud Platform (GCP). Working closely with engineering, security, DevOps, and operational teams, you will contribute to cloud architecture designs, automate security remediation processes, and...
IR35 Status:
Inside IR35

CV-Library Knutsford, Cheshire Contractor
CL
Sep 16, 2026  
Scaleway Portal Engineer
Scaleway Portal Engineer Poland - Remote €400 - €450 September Start Contract 6-12 Months We are looking for a Scaleway Portal Engineer to build and maintain a customer-facing web portal that provisions and manages infrastructure on Scaleway. You will work across the frontend and backend of the portal, integrating deeply with the Scaleway API to expose resource management, billing, and account features to end users in a fast, reliable, and well-designed interface Job Responsibilities/Objectives: Design and build features for a customer portal that manages Scaleway resources (Instances, Kubernetes, Storage, Databases, networking) via the Scaleway API. Develop responsive, accessible frontend interfaces (React/TypeScript) for provisioning, monitoring, and account management. Build and maintain backend services (Node.js, Go, or Python) that wrap and orchestrate calls to the Scaleway API. Implement authentication, authorisation, and role-based access control (RBAC) for portal...
IR35 Status:
Unknown Status

CV-Library United Kingdom Contractor
CL
Sep 15, 2026  
linux Engineer
Senior Linux / Unix Automation Engineer London 3 days on the office 9 Months Contract + Extension £350 a day Inside IR35 A well established firm is looking for an experienced Systems Engineer who brings solid Unix and Linux administration experience alongside hands-on infrastructure automation skill to join their current team on contract basis. In this role, you will help manage, test, and automate core enterprise compute and networking platforms. Rather than relying on manual setups, you will write automation code to streamline software and hardware certifications, manage plant infrastructure, and deliver infrastructure-on-demand for internal engineering teams. What You Will Be Doing Automating Systems: Build clean Python and Ansible code to remove repetitive setup, patching, and configuration tasks across enterprise infrastructure. API Integration: Connect infrastructure endpoints via REST APIs to deliver self-service, automated compute and network environments. Lab...
IR35 Status:
Inside IR35

CV-Library City of London, London Contractor
CL
Sep 14, 2026  
Zscaler Cyber Engineer
We are looking for a Zscaler Engineer to join the Cyber team on a contract basis to to provide technical leadership for the migration of web proxy services from a legacy Trend solution to Zscaler Internet Access (ZIA), ensuring effective coordination of engineering teams, data-driven technical planning, and successful migration execution within a structured delivery environment. Location: Preston - ad hoc travel to site - mainly remote Duration: 6 months Day rate £(Apply online only) a day - Inside IR35 Key Skills & Experience Required Deep technical expertise in:  Zscaler ZIA and ZPA (CASB desirable) Identity integration (Entra ID, SSO, SCIM, Conditional Access) Azure IaaS and networking (VPN Gateway, routing, connectivity design) Strong working knowledge of:  Enterprise networking (routing, switching, firewalls) Security operations, logging, and SIEM integration Proven experience leading engineering teams across infrastructure / network / security transformations...
IR35 Status:
Inside IR35

CV-Library Preston, UK Contractor
CL
Sep 13, 2026  
Infrastructure Engineer
Azure & Terraform Infrastructure Engineer Warwickshire | Hybrid – 3 Days Onsite / 2 Days Remote | 5-Month Contract VIQU is seeking a Senior Azure & Terraform Infrastructure Engineer to join a major enterprise customer in Warwickshire. This is a hands-on Azure Infrastructure engineering role, with Terraform and Azure experience being essential. You’ll be responsible for delivering infrastructure transformation, automation and platform change across a predominantly Azure-based hybrid environment. We’re looking for someone who can design, build and support Azure infrastructure using Terraform, while also being comfortable working across the wider hybrid environment. MUST-HAVE EXPERIENCE To be considered for this role, you must have strong hands-on experience with: Microsoft Azure – essential Terraform / Infrastructure as Code – essential Azure Networking – essential Azure Compute & Storage Entra ID / Azure Identity Azure Landing Zones / Azure platform architecture...
IR35 Status:
Unknown Status

CV-Library Warwickshire, UK Contractor
CL
Sep 13, 2026  
Full Stack Developer
Full Stack Developer (Node.js) | 3 month contract | up to £550 per day outside IR35 | Remote   We're seeking an experienced Full Stack Developer to join a major digital transformation programme focused on the delivery and launch of a large-scale customer-facing website.   This is an opportunity to work within a collaborative team environment on a business-critical platform, supporting the final stages of delivery, go-live activities, and post-launch enhancements.   The successful candidate will have strong Node.js and Next.js experience, combined with a proven track record delivering customer-facing web solutions using Headless CMS architecture in live production environments.   Key Responsibilities Develop and maintain scalable web applications using Next.js and Node.js. Design, build and enhance backend services, APIs and integrations. Support the delivery and launch of a large-scale customer-facing website. Collaborate with technical and non-technical stakeholders across the...
IR35 Status:
Outside IR35

CV-Library United Kingdom Contractor
CL
Sep 13, 2026  
IOS Engineer
Senior iOS Engineer - Native Swift & Backend-Driven UI Location: Hybrid Options Available Role Type: Contract We are looking for an experienced iOS Engineer to join an established product team building native features and backend-driven UI solutions. If you can quickly jump into an existing codebase, write clean code, and reliably deliver features with minimal guidance, we want to hear from you. Key Responsibilities Develop native iOS features using Swift, SwiftUI, and UIKit. Own tasks from technical design through to production release. Collaborate with backend devs, product managers, and designers in an Agile environment. Maintain high code quality through unit testing, debugging, and monitoring tools. Requirements 3+ years of professional iOS development experience (Swift, SwiftUI, UIKit). Proven ability to onboard quickly into large, existing codebases. Strong experience with modern iOS architecture (MVVM), Xcode, and REST/GraphQL APIs. Solid understanding of...
IR35 Status:
Unknown Status

CV-Library Manchester, Greater Manchester Contractor
CL
Sep 13, 2026  
Network Security Architect
Job title: Senior Network Security Architect Rate: £650 per day Inside IR35 Location: Remote (some travel to Newbury required) Contract: 6 months rolling Active SC clearance is required We're looking for an experienced Senior Network & Security Specialist who can be the technical lead to join a high-profile enterprise environment, working across networking, security, data centre fabrics and load balancing. Responsibilities: Lead the design and hands-on implementation of complex network and security solutions Create professional HLDs, LLDs, implementation plans and operational runbooks Work across Cisco, Juniper, Fortinet and F5 technologies Design and troubleshoot Cisco ACI environments, including spine/leaf, multi-site and multi-pod Engineer advanced BGP, OSPF, IS-IS, EIGRP, VXLAN, VLAN, STP, VPC/LACP and QoS solutions Design and implement NGFW, VPN, security policy and HA architectures Deliver F5 L4/L7 load balancing, SSL offload and GSLB Lead PoCs, design...
IR35 Status:
Inside IR35

CV-Library Newbury, Berkshire Contractor
CL
Sep 13, 2026  
Data Engineer (Python focused)
We’re looking for a Senior Data Engineer to join a fast-paced technology team working across data, analytics and emerging AI solutions. This is a 12-month day rate contract,  offering the opportunity to work on scalable data solutions while getting exposure to modern cloud and AI technologies. Your Responsibilities Design and develop reliable data pipelines for large and complex datasets Build solutions to extract, transform and process data from a range of internal and external sources Develop scalable applications and data processing solutions using Python Work with cloud-based technologies, particularly AWS, to support data and analytics workloads Help take ideas from initial concepts and prototypes through to production Work closely with developers, data specialists and business stakeholders to deliver technical solutions Identify opportunities to improve existing systems, processes and data workflows Support production environments and participate in an on-call...
IR35 Status:
Unknown Status

CV-Library United Kingdom Contractor
CL
Sep 12, 2026  
QA Test Infrastructure Engineer (Contract)
QA Test Infrastructure Engineer - Contract - MOD/Defence Somerset| £600 per day | Outside IR35 | DV Security Clearance Required Are you an Infrastructure Test Engineer with strong QA and testing experience across networks, platforms and Infrastructure as Code? This is an opportunity to work on complex Defence and National Security projects, taking responsibility for testing and validating infrastructure before deployment into highly secure production environments. Working alongside Infrastructure Engineers, Architects and DevSecOps specialists, you'll assure infrastructure across physical, virtualised and cloud environments, ensuring it meets the required standards for functionality, resilience and security. What you'll do Create infrastructure-focused test strategies, plans and test cases. Carry out functional, integration, regression, resilience and security testing. Test and validate Infrastructure as Code deployments. Validate physical, virtualised and cloud...
IR35 Status:
Outside IR35

CV-Library Somerset, UK Contractor
CL
Sep 12, 2026  
Data Integration Architect
Data Integration Architect Hybrid - 1 day per week in various locations in the South i.e. London, Bristol £640 per day inside IR35 6 month contract Active SC clearance Are you an experienced Infrastructure Engineer or Solution Architect with expertise in HVR and Oracle Cloud Infrastructure (OCI)? We're looking for a specialist to play a key role in delivering a secure, cloud-based data integration solution for a high-profile government programme. Working within a secure environment, you'll be responsible for designing and implementing an HVR-based data replication solution, enabling the migration of legacy Oracle data feeds into a modern Oracle Cloud Infrastructure landing zone. This is an opportunity to work on a complex, business-critical programme with a strong focus on cloud architecture, data integration and security. The Role You'll be responsible for designing and delivering a secure HVR integration capability, ensuring data can be replicated reliably from legacy...
IR35 Status:
Inside IR35

CV-Library West End, London Contractor
CL
Sep 12, 2026  
IOS Engineer
iOS Engineer Duration: 06 Months Location: Manchester - 1 days onsite a week The Role Join our established engineering team as an Experienced iOS Engineer, where you will build, maintain, and elevate native iOS features alongside a TypeScript-based backend-driven UI solution. We are looking for a highly autonomous, pragmatic developer who can dive directly into an existing codebase and begin delivering production-ready software with minimal guidance. Key Responsibilities End-to-End Delivery: Drive features from technical design through implementation and release using Swift, SwiftUI, and UIKit. Collaborative Engineering: Break down complex tasks and partner effectively with backend engineers, designers, PMs, and QA in a fast-paced Agile environment. Quality & Stability: Debug production issues, write maintainable code with robust unit tests, and monitor app health using observability and crash reporting tools. What You Bring Core Experience: 3+ years of professional...
IR35 Status:
Unknown Status

CV-Library Manchester, Greater Manchester Contractor
CL
Sep 12, 2026  
Software Engineer
Software Engineer x2 Rate - £750 - £830 Location - London 2/3 days on site Until end of July 2027 About the Role To strengthen our AI for Science (AI4S) team, we are looking for Software Engineers with a track record in developing production-grade, data-driven software solutions. You will design, build and operate the scalable cloud infrastructure and services - including the serving of our models - that our AI systems and agentic applications run on, and you will be accountable for keeping them reliable in production. This is hands-on software and platform engineering: building robust, well-tested, high-performance systems that scientists across the client nd on every day, on modern cloud technology and the vast biomedical data sources available to us. In this role you will Design, build and operate scalable infrastructure and services that support our AI models and agentic systems across the entire software development life cycle. Own the reliability of what you build -...
IR35 Status:
Unknown Status

CV-Library London, UK Contractor
CL
Sep 11, 2026  
Senior Systems Engineer - Secure Cloud & Infrastructure
Senior Systems Engineer - Secure Digital Platform (SDP) Data & Integration Location: Reading - 3 days onsite / 2 days remote Rate: £65-£71 per hour, inside IR35 Security Clearance: Active SC Clearance required Nationality: Sole British National required Contract: 6 Months + The Role We are seeking an experienced Senior Systems Engineer to support a secure digital platform within a highly regulated defence and aerospace environment. You will be responsible for the design, implementation, operation, support and continuous improvement of enterprise infrastructure, cloud platforms and hosting services. The role provides technical leadership across hybrid environments, ensuring systems are secure, resilient, scalable and aligned with business and programme objectives. You will work across Microsoft Azure, on-premises infrastructure, virtualisation, storage, networking and container platforms including Kubernetes and Red Hat OpenShift. Working closely with security,...
IR35 Status:
Inside IR35

CV-Library Reading, Berkshire Contractor
CL
Sep 11, 2026  
Senior Systems Engineer
Senior Systems Engineer Secure Digital Platform (SDP) Data & Integration Reading | Hybrid Working (3 Days Onsite) 6-Month Contract £64 per Hour (Inside IR35) Winsearch is recruiting for an experienced Senior Systems Engineer to join a major digital transformation programme supporting enterprise-scale infrastructure, cloud services and platform operations. This is an excellent opportunity for a senior infrastructure professional to play a key role in the design, delivery and ongoing improvement of modern hybrid platforms, working across cloud, on-premises and containerised environments. You'll be involved in supporting critical services while driving automation, modernisation and operational excellence initiatives. The Role As a Senior Systems Engineer, you will provide technical leadership across a complex infrastructure landscape, ensuring systems remain secure, resilient, scalable and aligned with business objectives. Working closely with architects, security teams,...
IR35 Status:
Inside IR35

CV-Library Reading, UK Contractor
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