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Contractor 21
Information Technology senior design engineer

21 senior design engineer jobs found

CL
Mar 04, 2026  
PySpark Developer
Lead PySpark Engineer (Cloud Migration) Role Type: 5-Month Contract Location: Remote (UK-Based) Experience Level: Lead / Senior (5+ years PySpark) Role Overview We are seeking a Lead PySpark Engineer to drive a large-scale data modernisation project, transitioning legacy data workflows into a high-performance AWS cloud environment. This is a hands-on technical role focused on converting legacy SAS code into production-ready PySpark pipelines within a complex financial services landscape. Key Responsibilities Code Conversion: Lead the end-to-end migration of SAS code (Base SAS, Macros, DI Studio) to PySpark using automated tools (SAS2PY) and manual refactoring. Pipeline Engineering: Design, build, and troubleshoot complex ETL/ELT workflows and data marts on AWS. Performance Tuning: Optimise Spark workloads for execution efficiency, partitioning, and cost-effectiveness. Quality Assurance: Implement clean coding principles, modular design, and robust unit/comparative testing...
IR35 Status:
Unknown Status

CV-Library London, UK Contractor
CL
Mar 01, 2026  
Technology Resilience Architect
We are recruiting for a Technology Resilience Architect for a leading IT Service provider in one of their UK Office locations. We are currently seeking an experienced professional to join our team in the role of Technology Resilience Lead Enterprise Architect. The ideal candidate is passionate about technology resilience, with knowledge of how the ways that a service is designed, built, and run contribute to overall resilience. They will work on the big global resilience initiatives and play a key role in uplifting the quality and availability of service for our customers. Responsibilities: Contribute to the Technology Resilience strategy and sub-strategies, considering all aspects of resilience: application, infrastructure, security, data, observability, operations and culture. Collaborate with Technology teams on building best practice resilience design patterns and solutions, for re-use. Build strong feedback loops from production incident data to the best practice for...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Feb 26, 2026  
Application Architect
Application Architect Duration: 12 Months Location: Croydon / Hybrid- 1 day PW on-site Due to the urgency and sensitivity of the work, active SC Clearance is mandatory. Responsibilities As an Application Architect, you will: Design and lead delivery of scalable, high-performance application architectures Define and apply modern application architecture patterns, including microservices, event-driven architectures, and SOA Support monolith-to-microservices transformation initiatives where required Architect cloud-native applications across AWS, Azure, and/or GCP Design API strategies, integration patterns, and messaging-based solutions Ensure strong alignment with application lifecycle management, CI/CD pipelines, and DevOps practices Work closely with platform and engineering teams to align application design with infrastructure-as-code and platform services Embed application security principles, including authentication, authorisation, secure APIs, and data...
IR35 Status:
Unknown Status

CV-Library Croydon, London Contractor
CL
Feb 06, 2026  
Senior Backend Engineer
Senior Backend Engineer (Platform & Cloud) Location: London (Hybrid) Contract: 6–12 months Rate: Negotiable (DOE) We’re working with a global enterprise organisation that is expanding a centralised engineering function supporting multiple product teams across an international portfolio. They’re looking for a Senior Backend Engineer to join a core platform team responsible for building shared services, libraries, and cloud-based functionality used across a wide range of internal products. This is a highly collaborative role, working directly with senior engineers and technical leaders across multiple time zones, helping shape the foundations of how teams build, scale, and reuse backend capability. The Role You’ll be part of a central engineering group building common functionality for distributed product teams. Early work will focus on: Abstracting existing codebases into shared Python libraries Developing data-driven solutions using PySpark and DataFrames Building and...
IR35 Status:
Unknown Status

CV-Library London, UK Contractor
CL
Dec 28, 2025  
Configuration Engineer
Configuration Engineer Stevenage – Hybrid Working 6 12 Month Plus Contract Working with a Globally known Manufacturing Company within the Defence industry. They are actively seeking a Configuration Engineer on a 6 - 12 month plus contract within the Stevenage area.   Responsibilities: The Senior Configuration Engineer is responsible for the Product definition and/or Configuration Management of a minor project or major parts of a project.  Skillset/experience required: Knowledge of Configuration Management and the application of these within and demanding yet professional engineering environment. The ability to build rapport with stakeholders as well as positively promote the Configuration Management group through supportive and pro-active approach with internal customers. Awareness of relevant internal and external customer requirements and standards. Reflection of engineering input, through the engineering change process, into the design definition / structure,...
IR35 Status:
Unknown Status

CV-Library Stevenage, UK Contractor
CL
Mar 05, 2026  
Principal Software Engineer
Principal Software Engineer Edinburgh 12-Month Contract Paying up to £87p/h (Inside IR35) Please note - due to the nature of the work, you will need to hold or be eligible to obtain a high level of UK Security clearance - please only apply if suitable Key Responsibilities: Create and deliver software solutions within a defined work package area, ensuring that the package meets all stakeholder requirements Establish and mature stakeholder needs, associating/attributing priority, interest, influence and trading-off needs to determine optimum capability to solve stakeholders? problems Create high quality and robust code; for fully documenting and recording your work products; keeping them under configuration management and providing plans and reports on progress to your line manager Work closely with internal and external stakeholders to ensure architecture alignment with other elements of the programme. Ensure the application of appropriate tools / techniques for test...
IR35 Status:
Inside IR35

CV-Library Edinburgh, UK Contractor
CL
Mar 05, 2026  
Storage Virtualisation Engineer
Virtualization Engineers x 2 + 9 month contract + Hybrid working in Sheffield + £480 to £500 per day Key Skills: + VMWare ESX Cluster + Scripting & Automation Virtualization Engineer will design, implement, and manage virtualization technologies and environments to optimize IT infrastructure and resource utilization. This role involves configuring and maintaining virtual machines, managing hypervisors, and ensuring the efficient operation of virtualized environments Key Responsibilities: * Design, deploy, and manage virtualization solutions, including virtual machines and hypervisors. * Monitor and optimize the performance of virtualized environments to ensure high availability and efficiency. * Implement and maintain virtualization technologies (e.g., VMware, Hyper-V, KVM, Nutanix, OpenShift). * Build/Rebuild new VMware ESX cluster environments using automation solutions to meet business requirements globally * Ability to quickly learn and Implement VMware technology...
IR35 Status:
Unknown Status

CV-Library Sheffield, South Yorkshire Contractor
CL
Mar 05, 2026  
C++ Software Engineer
C++ Software Engineer - Defence Initial 6-month contract Onsite in Reading when required Please note, due to the nature of work this role requires SC level Security Clearance on submission. The role will also be working on UK Eyes Only programmes so the contactor must be a sole British national. Our client, a leader in the defence and security sector, is currently seeking an experienced C++ Software Engineer for a contract position. Based near Reading, this role is largely remote with occasional onsite requirements (25% onsite). The contract tenure is six months with full-time hours (37 hours per week). You will be a key contributor in an agile software delivery team, focusing on the development of high-quality software products and innovating within a crucial defence project. Key Responsibilities: Design, build, and maintain code using industry best practices and contributing to estimation activities. Contribute to the completion of product roadmap features, adding...
IR35 Status:
Unknown Status

CV-Library Reading, Berkshire Contractor
CL
Mar 04, 2026  
Contract Technology Manager
Software Engineering Manager £750pd - outside IR35 2 days per week, London/Hampshire We need an urgent contract Tech Manager for 6 months for a long standing banking client of mine. Someone with solid Vendor Management experience, who is hands on (not day to day coding) but can roll up their sleeves and get stuck into the change the business is goign through over the next 12 months. They are growing fast, hit profitability this year and we need a people and technology leader to lean in an support the tech teams and technical challenges around new and existing suppliers. This isn't just a delivery role. It's about people, purpose and progress. You'll coach and mentor a team of around five engineers, creating an environment where people feel supported to grow, challenge ideas and do their best work. You'll champion engineering best practice, encourage curiosity, and help embed a culture that's collaborative, commercially aware and outcome-focused. Working closely with product, design...
IR35 Status:
Outside IR35

CV-Library Fleet, Hampshire Contractor
CL
Mar 04, 2026  
Data Architect
Data Architect | Hybrid | £700 - £900 p/d PAYE | 24 Month Contract Contract: 24 Months Rate: £700–£900 per day (Inside IR35) Location: Open to someone in London, Leeds or Edinburgh Overview: We are seeking an experienced Data Architect to join a leading consultancy on a 24-month contract. You will drive the design, governance, and delivery of enterprise-wide data architecture, ensuring data assets are resilient, scalable, and aligned with business and regulatory requirements. You will work with cross-functional teams to define future-state data capabilities, integrate systems, and support data governance initiatives that enable strategic organisational outcomes. Key Responsibilities: Develop and maintain enterprise-level conceptual, logical, and physical data models Define and evolve enterprise data architecture standards, principles, patterns, and best practices Collaborate with product teams and solution architects to design integrated, end-to-end data flows Maintain...
IR35 Status:
Inside IR35

CV-Library United Kingdom Contractor
CL
Feb 28, 2026  
SC Cleared Data Architect
Job Title: Lead Data Architect Location: Farnborough Duration: 6 months with possible extension Rate: Up to £700 per day via an approved umbrella company Must be willing and eligible to go through the SC clearance process Our client, a reputable organisation in the IT sector, is seeking a skilled Lead Data Architect to join their Data Science, Engineering, and Assurance team. This senior role offers the opportunity to take ownership of data architecture, develop and evolve data migration strategies, and lead the deployment into secure customer environments. You will set the technical direction, make pragmatic architectural decisions, and provide hands-on leadership to a team of Data Engineers and Data Analysts, ensuring the platform remains secure, scalable, resilient, and operational as it grows. What you'll be doing: * Own and refine the data architecture, establishing standards, governance, and roadmaps. * Map and document data flows, identifying data locations,...
IR35 Status:
Unknown Status

CV-Library Malvern, Worcestershire Contractor
CL
Feb 27, 2026  
Senior Security Administrator - Palo Alto
Security Administrator 6 months London - hybrid Inside IR35 - Umbrella only Role overview: Palo Alto Networks expertise to support and enhance our security operations. Palo Alto Networks provides a comprehensive, AI-powered SASE (Secure Access Service Edge) solution known as Prisma SASE. It is designed to converge networking and security into a single cloud-delivered platform to support hybrid workforces and modern, distributed enterprises You will be responsible for the administration, configuration, policy management, monitoring, and optimisation of Palo Alto security controls, ensuring secure and resilient network operations across enterprise environments. This role is hands-on, need to be comfortable working in complex, regulated, or high-availability environments, partnering with infrastructure, networking, and SOC teams to deliver robust security outcomes.Key Responsibilities: Palo Alto Administer, configure, and support Palo Alto NGFWs (PA-Series / VM-Series)...
IR35 Status:
Inside IR35

CV-Library City of London, London Contractor
CL
Feb 27, 2026  
Senior Backend Developer
Join our client in embarking on an ambitious data transformation journey using Databricks, guided by best practice data governance and architectural principles. To support this, we are recruiting for talented data engineers. As a major UK energy provider, our client is committed to 100% renewable energy and sustainability, focusing on delivering exceptional customer experiences. It is initially a 6-month contract with potential to be extended. The role is Hybrid, with one day a week being based in their Nottingham office every two weeks, this is negotiable. It is a full-time role. Accountabilities: Develop and maintain scalable, efficient data pipelines within Databricks, continuously evolving them as requirements and technologies change. Build and manage an enterprise data model within Databricks. Integrate new data sources into the platform using batch and streaming processes, adhering to SLAs. Create and maintain documentation for data pipelines and associated systems,...
IR35 Status:
Unknown Status

CV-Library Nottingham, Nottinghamshire Contractor
CL
Feb 27, 2026  
Senior Python Developer - Digital Trading Analytics
We are looking for a Senior Python Developer to design, build, and maintain high‑performance, scalable solutions supporting financial market analytics. This is a high-impact role sitting at the intersection of complex data engineering and front-office trading systems. You will play a key role in shaping engineering practices, guiding architectural decisions, and leading junior engineers to deliver business-critical solutions. Financial Engineering: Design and deploy scalable, high-performance software for data processing and trading analytics. Technical Leadership: Lead architectural decisions, conduct rigorous code reviews, and mentor junior engineers. Stakeholder Collaboration: Partner with Traders, Quants, and Product Managers to translate market requirements into robust technical solutions. DevOps Excellence: Drive CI/CD automation, TDD/BDD practices, and containerised deployments via Kubernetes. Performance Tuning: Diagnose and resolve bottlenecks in production systems to...
IR35 Status:
Unknown Status

CV-Library London, UK Contractor
CL
Feb 27, 2026  
Data and Integration Architect
Data and Integration Architect | £600-£700 per day | Outside IR35 | 3 Months | Solihull/Hybrid   We’re looking for a Data & Integration Architect to lead enterprise data architecture and integration strategy across a complex technology landscape. You’ll define standards, shape target-state architecture, and ensure data and systems (ERP, CRM, digital platforms, SaaS) work together securely, reliably, and at scale.   This role suits a senior architect who enjoys setting direction, influencing delivery teams, and translating business needs into robust, future-proof technical designs.   Key Responsibilities   Data Architecture Own enterprise data architecture (conceptual, logical, physical models) Define canonical data models, taxonomies, and governance frameworks Architect data platforms (Data Lake, Warehouse, MDM, Analytics) Enable MI/BI, AI/ML, and reporting through high-quality, well-managed data Define retention, lifecycle, archival, and purge strategies  Integration...
IR35 Status:
Outside IR35

CV-Library Solihull, UK Contractor
CL
Feb 26, 2026  
Simulation Engineer
Simulation Engineer Luton OR Edinburgh 6-month contract Paying up to £65p/h (InsideIR35) Please note - due to the nature of the work, you will need to hold or be eligible to obtain a high level of UK Security clearance - please only apply if suitable Key Responsibilities: Lead engine-driven projects from concept through delivery, building demos, bespoke tools, and integrated simulations. Exploit and extend game and simulation engines to meet performance, quality, and interoperability goals. Design and implement robust systems using C++, Python, and Lua to automate workflows and integrate third-party tools. Drive engine maintenance and optimisation, including profiling, memory and CPU tuning, and platform-specific improvements. Collaborate across disciplines with systems engineers, software teams, Human Factors designers, and IT to deliver cohesive solutions. Rapidly prototype and iterate, turning experimental ideas into validated features and production-ready components....
IR35 Status:
Outside IR35

CV-Library Edinburgh, UK Contractor
CL
Feb 11, 2026  
Electrical Systems Engineer / Architect
World Class Defence Organisation is currently looking to recruit an Electrical Systems Engineer / Architect subcontractor on an initial 12 month contract. Your base site can either be from the companies Bristol, Stevenage or Bolton office.  This role will be a hybrid position – 3 days per week onsite and 2 days remote.      Hourly Rate: £60 - £85 (Umbrella).      Contract Duration: 6 Months initially and then ongoing and long-term thereafter.   Missile Electronic Architect Job Description:   Electrical Architects/Engineers are involved in all aspects of missile development, from the early concept studies to series production and in-service support. It’s an excellent opportunity for someone wanting to build on their engineering experience. Responsibilities: You will be responsible for the electrical architecture and requirements for missiles and/or their associated launcher systems with duties including: Specifying/determining system electrical requirements interface definitions...
IR35 Status:
Unknown Status

CV-Library Bolton, UK Contractor
CL
Feb 11, 2026  
Electrical Systems Engineer / Architect
World Class Defence Organisation is currently looking to recruit an Electrical Systems Engineer / Architect subcontractor on an initial 12 month contract. Your base site can either be from the companies Bristol, Stevenage or Bolton office.  This role will be a hybrid position – 3 days per week onsite and 2 days remote.      Hourly Rate: £60 - £85 (Umbrella).      Contract Duration: 6 Months initially and then ongoing and long-term thereafter.   Missile Electronic Architect Job Description:   Electrical Architects/Engineers are involved in all aspects of missile development, from the early concept studies to series production and in-service support. It’s an excellent opportunity for someone wanting to build on their engineering experience. Responsibilities: You will be responsible for the electrical architecture and requirements for missiles and/or their associated launcher systems with duties including: Specifying/determining system electrical requirements interface definitions...
IR35 Status:
Unknown Status

CV-Library Stevenage, UK Contractor
CL
Feb 11, 2026  
Electrical Systems Engineer / Architect
World Class Defence Organisation is currently looking to recruit an Electrical Systems Engineer / Architect subcontractor on an initial 12 month contract. Your base site can either be from the companies Bristol, Stevenage or Bolton office.  This role will be a hybrid position – 3 days per week onsite and 2 days remote.      Hourly Rate: £60 - £85 (Umbrella).      Contract Duration: 6 Months initially and then ongoing and long-term thereafter.   Missile Electronic Architect Job Description:   Electrical Architects/Engineers are involved in all aspects of missile development, from the early concept studies to series production and in-service support. It’s an excellent opportunity for someone wanting to build on their engineering experience. Responsibilities: You will be responsible for the electrical architecture and requirements for missiles and/or their associated launcher systems with duties including: Specifying/determining system electrical requirements interface definitions...
IR35 Status:
Unknown Status

CV-Library Bristol, UK Contractor
CL
Dec 17, 2025  
FPGA Design Engineer
World Class Defence Organisation based in Stevenage is currently looking to recruit an FPGA Design Engineer Subcontractor on an initial 6 month contract.   Rate: £90.00 per hour Overtime Rate: Hours worked over the standard 37 hours per week, will be paid at ‘time and a quarter’ Location: Stevenage Hybrid / Remote working: The role will be onsite Duration: 6 Months with very likely extension. Contracts are often ongoing and long-term thereafter.  IR35 status: Inside IR35 (Umbrella) Interview process: One stage video interview   FPGA Design Engineer Job Description:    For this role, we are seeking an experienced FPGA design and verification engineer (~4+ years), to support the development of our growing portfolio of complex FPGA projects. The current portfolio ranges from advanced signal processing systems (ImageRadio), core embedded processing systems, through to safety & security critical systems. Responsibilities: The role involves working at all phases of the FPGA...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
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