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Contractor 45
lead software engineer

45 lead software engineer jobs found

CL
Jul 05, 2026  
Lead Software Engineer / Senior Software Engineer
Lead Software Engineer / Senior Software Engineer (Python & Django) Contract Length: 12 Months Rate: Up to £750 per day (Umbrella) IR35 Status: Inside IR35 Clearance Required: Active SC Clearance Working Pattern: Hybrid – 2 days per week onsite Locations London Manchester Birmingham Cardiff Darlington The Opportunity We are seeking an experienced Lead Software Engineer / Senior Software Engineer with strong Python and Django expertise to join a major digital transformation programme operating within a secure and highly regulated environment. This is an exciting opportunity to contribute to the design, development, and delivery of secure, scalable digital services supporting business-critical systems. Working within a modern agile delivery environment, you will play a key role in shaping technical solutions, leading engineering activities, and collaborating across multidisciplinary teams. The successful candidate will be a hands-on technical leader with a passion...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Jul 10, 2026  
Software Test Engineer / Lead – Outside IR35
Software Test Engineer / Lead – Outside IR35 My client is the fastest growing technology company who is seeking a Software Test Engineer / Lead for an initial 12-month contract. As a Software Test Engineer / Lead you should have experience with both Manual and Automated Testing, Regression Testing or Performance Testing. As a team player you will be liaising with other multi-functional testers and software designer / developers to understand the business requirements and product functionality, You will be involved in software test spec, manual test cases, automated test scripts and performance testing solutions that will need to be implemented throughout the delivery pipeline. Involvement in production and maintenance of system testing and systems integration of hardware and software components through to resolution of all faults found in the software. You will ideally be degree educated in an engineering or science subject, with a good IT content and ISTQB® certification is...
IR35 Status:
Outside IR35

CV-Library United Kingdom Contractor
CL
Jul 11, 2026  
Chapter Lead
Chapter Lead - Software Engineering (FTC up to 12 months) £50,000 - £70,000 per annum IT Function 37.5 hours per week Hybrid (UK-based) - 2 days working from home per week Fixed Term Contract (up to 12 months) Shape the Future of Fintech Engineering Ready to step into a role where you can lead exceptional people, drive real change, and deliver technology that matters? We're looking for a Chapter Lead to join a high-impact fintech transformation programme, where modern engineering powers real-world financial services at scale. You'll operate within a product-led environment, building secure, scalable platforms handling millions of transactions, while leading a talented engineering chapter working across cross-functional squads. This is a role where your impact will be visible, meaningful, and immediate. What You'll Be Doing Leading & Inspiring People Build, lead and develop a high-performing team of software engineers Champion a coaching-first, inclusive culture Own...
IR35 Status:
Unknown Status

CV-Library Hereford, Herefordshire Contractor
CL
Jul 12, 2026  
Lead Process Engineer
Clean Water project Our Client has a requirement for a Lead Process Engineer, who will be required to work on a contract basis on a Clean Water project Peterborough. Role Purpose: The Lead Process Engineer will work collaboratively with the project design team to develop and deliver optimised process engineering solutions for clean water infrastructure projects. The role will ensure compliance with engineering standards, promote process safety, and support the delivery of efficient, reliable, and sustainable water treatment and pumping systems. The role will focus on clean water pumping stations, dosing systems, and associated control and SCADA integration, ensuring robust hydraulic and process design solutions are delivered from concept through to commissioning support. Job Role Responsibilities: Lead process design for clean water pumping stations, dosing systems, and control systems. Deliver hydraulic calculations, pump sizing, control valve selection, capacity...
IR35 Status:
Unknown Status

CV-Library Peterborough, UK Contractor
CL
Jul 12, 2026  
Data Engineer
Location: Newcastle upon Tyne (primarily remote, occasional travel) Contract Type: Contract (Outside IR35) Day Rate: Up to £800 per day The Opportunity We're partnering with a highly respected Software business to find an experienced Data Engineer to support a major client engagement. This is a hands-on, client-facing role where you'll play a key part in shaping and delivering modern data platforms and pipelines. You'll work closely with stakeholders to unlock the value of data, building scalable solutions that support analytics, reporting, and advanced use cases such as machine learning. Role responsibilities: Lead the design and delivery of robust, scalable data platforms and pipelines Work alongside client teams to understand requirements and translate them into effective technical solutions Build and optimise data ingestion, transformation, and storage processes Develop integrated data models to enable reporting, analytics, and AI use cases Provide technical leadership...
IR35 Status:
Outside IR35

CV-Library Newcastle upon Tyne, Tyne and Wear Contractor
CL
Jul 12, 2026  
Principal Pipeline Engineer - Low Carbon
Location: Remote (Occasional travel to Manchester, London, Newcastle & Glasgow) IR35 Status: Inside IR35 The Opportunity We are currently seeking an experienced Principal Pipeline Engineer to join a rapidly growing Energy Transition team supporting the design and delivery of cutting-edge low-carbon infrastructure projects across the UK. This is an exciting opportunity to play a leading technical role on nationally significant projects focused on the future of the UK energy sector, including hydrogen transmission systems, carbon capture infrastructure, natural gas networks, and wider decarbonisation technologies. Working within a multidisciplinary engineering environment, you will take ownership of pipeline and mechanical engineering design activities across the full project lifecycle - from early-stage concept development and FEED through to detailed design, construction, commissioning, and long-term operational support. This position offers the opportunity to work on some...
IR35 Status:
Inside IR35

CV-Library United Kingdom Contractor
CL
Jul 12, 2026  
Site Reliability Engineer (SRE)
Job Title: Lead Site Reliability Engineer (SRE) - Observability Location: Reading, UK / Hybrid & Remote Options About the Role We are looking for a Lead SRE to design, scale, and operate massive-scale observability systems that keep our global services online and performant. You will join an autonomous team of software engineers focused on solving complex data infrastructure challenges. Key Responsibilities Scale Prometheus metrics infrastructure to handle 100+ million active series. Operate large Elasticsearch clusters holding 2000+TB of data. Grow high-throughput Kafka data pipelines processing hundreds of thousands of events per second. Build custom alerting workflows and self-service APIs for internal engineering teams. Provision cloud and private infrastructure using Terraform. Requirements 5+ years operating mid-to-large distributed systems on Linux VMs or bare-metal machines. 2+ years developing in Go, Python, Ruby, Scala, or Bash. Hands-on experience with...
IR35 Status:
Unknown Status

CV-Library United Kingdom Contractor
CL
Jul 12, 2026  
Senior Software Engineer
Senior Software Engineer - (phone number removed) - £57.20/hr Are you ready to elevate your career as a Senior Software Engineer? This exciting opportunity offers the chance to work on cutting-edge projects in a dynamic and collaborative environment. With a focus on innovation and operational excellence, this company is looking for talented individuals like you to make a real impact. Take the next step in your career and be part of a team that values quality, performance, and professional growth. What You Will Do: - Collaborate as a Senior Software Engineer within a high-performing squad to deliver high-quality software deployments. - Optimise communication and integration between development, quality assurance, and IT operations teams. - Develop and implement infrastructure solutions that leverage the latest technology best practices. - Enhance operational performance through innovative problem-solving and process improvements. - Lead and mentor junior team members,...
IR35 Status:
Unknown Status

CV-Library Manchester, UK Contractor
CL
Jul 12, 2026  
Mechanical Project Engineer
Mechanical Project Engineer Based in Dagenham £450 Day Rate Outside IR35 6 Month Rolling Contract The Role We are looking for an experienced Mechanical Project Engineer to deliver CAPEX projects from concept through to commissioning at our industrial site. Working as part of a collaborative engineering team, you will manage the full project lifecycle while overseeing contractors, ensuring technical excellence and maintaining the highest safety standards. This role will support the delivery of an annual £4–6 million CAPEX programme as part of a wider long-term investment strategy. Key Responsibilities of the Mechanical Project Engineer Manage projects from concept, design and budgeting through to commissioning and handover. Develop project scopes, schedules and cost estimates. Coordinate and manage contractors, including tendering and on-site performance. Lead mechanical engineering activities, particularly pipework modifications, pumps and valves. Ensure compliance with...
IR35 Status:
Outside IR35

CV-Library Dagenham, UK Contractor
CL
Jul 11, 2026  
Electrical Building Services Engineer
Techniche Global are supporting a major global engineering, design consultancy to appoint an Electrical Building Services Engineer. This role will encompass a multi-sector experience, but expertise from working within the Commercial, Healthcare, Residential, Blue Light, Heritage, Education or Rail sectors might be a benefit. The opportunity will require candidates to be client-facing as well as being involved in the day-to-day design of projects. It is an exciting opportunity for a design engineer to further develop their career within a leading building design consultancy.    Rate:                    up to 55p/ hr UMB (inside IR35) Location:             Cardiff or Swansea - hybrid (3 days onsite/ 2 days WFH) Duration:             6 months initially with the potential to extend Working Hours:  37.5 hours per week Requirements: Eligible for SC Clearance (sole British, dual national or ILR visa holder who has worked and lived in the UK for the past 5 years)...
IR35 Status:
Inside IR35

CV-Library Cardiff, UK Contractor
CL
Jul 11, 2026  
Development Engineer
Job Title: Development Engineer (Base Engines) Location: Peterborough (Fully Onsite) Salary Equivalent: £49,519 per annum Contract Length: 12 Months Working Hours: Monday to Thursday (08:30 - 16:45) & Friday (08:30 - 16:15) About the Role Join a global leader in manufacturing and engineering as a Development Engineer within the Component Engineering Base Engine Team. This position comes at a time of significant investment in clean-sheet engine designs to meet an ever-changing global energy landscape. In this role, you will act as a key technical contributor, focused on developing and validating design solutions for New Product Introduction (NPI) projects, new technologies, and updates to existing engine platforms. Working in a collaborative, supportive 9-member team, you will interface directly with global manufacturing sites, suppliers, and customers. Key Responsibilities Validation & Testing: Lead, plan, and execute core engine system validation activities,...
IR35 Status:
Unknown Status

CV-Library Peterborough, Cambridgeshire Contractor
CL
Jul 11, 2026  
Senior Chassis Engineer - Stability Control Systems and Driveline
Senior Chassis Engineer - Stability Control Systems and Driveline / Vehicle Dynamics - (phone number removed) - £33.99/hr umbrella rate Do you have proven experience in automotive chassis engineering and vehicle dynamics within an OEM or Tier 1 supplier environment? Are you ready to drive your career forward with a role that puts you at the forefront of automotive innovation? This is your opportunity to join a dynamic and forward-thinking organisation as a Senior Chassis Engineer Stability Control Systems and Driveline. If you're passionate about vehicle dynamics and want to work on cutting-edge stability control systems and driveline technologies, this could be the perfect role for you. With a competitive hourly umbrella rate of £33.99, this contract position offers an exciting chance to make a tangible impact in the automotive industry. What You Will Do:  - Lead the delivery of Stability Control Systems, ABS, and Driveline calibrations for assigned programmes to meet attribute...
IR35 Status:
Inside IR35

CV-Library Gaydon, Warwick CV35, UK Contractor
CL
Jul 11, 2026  
ITEA System Engineer
Copello is recruiting for a ITEA Systems Engineer on a contract basis for a defence organisation in Buckinghamshire on a 6 month contract. The Systems Engineer is responsible for supporting the integration, testing, verification, and acceptance of airborne radio communication systems, with a strong emphasis on hands-on RF testing and system verification activities. Key Responsibilities * Lead physical and functional integration, verification, and acceptance activities for airborne radio communication systems. * Develop functional test procedures at subsystem and system level for radio communication systems. * Execute testing in accordance with approved test procedures and continuously improve procedures to increase efficiency and effectiveness. * Maintain a clear and organised view of test progress, risks, issues, and dependencies. * Operate RF laboratory test equipment, including signal generators, spectrum analysers, oscilloscopes, noise sources, and associated...
IR35 Status:
Inside IR35

CV-Library High Wycombe, Buckinghamshire Contractor
CL
Jul 10, 2026  
Senior Developer
Senior Software Engineer (FTC up to 12 months) £50,000 - £60,000 per annum IT Function 37.5 hours per week Hybrid (UK-based) Fixed Term Contract (up to 12 months) Take Ownership in a High-Impact Fintech Environment Looking for your next move where you can lead on complex engineering challenges, influence technical direction, and deliver real impact? We're looking for a Senior Software Engineer to join a growing fintech environment, working on secure, scalable systems that support real-world financial services. Operating within a modern, Agile product environment, you'll play a key role in delivering high-performance platforms handling large-scale transactions, while mentoring others and driving technical excellence across the team. This is a fantastic opportunity to step into a senior role with genuine ownership and influence. What You'll Be Doing Delivering High-Quality Engineering Solutions Design, develop, and deliver robust, scalable software solutions Translate...
IR35 Status:
Unknown Status

CV-Library Hereford, Herefordshire Contractor
CL
Jul 10, 2026  
Senior IT Engineer
After a long-lasting relationship, our client is separating away from is parent company and this role plays a pivotal role in ensuring the successful separation of IT systems supporting the manufacturing site. The position will work as part of an IT systems separation team to plan and execute a separation plan in line with separation timelines. This would be a 1 Year contract with a possible extension further. Key Responsibilities: * Understands portfolio of IT systems used at local and franchise level. Works within the separation framework to plan and execute the separation of these systems from the parent company * Understands business processes and needs, collaborates with business functions to ensure robust plans for separation. * Will need to quickly develop detailed understanding of current system architecture, security requirements, access control, data flows, etc. * Needs to engage with multiple in-house/external teams to ensure smooth transition of apps and...
IR35 Status:
Unknown Status

CV-Library West Yorkshire, UK Contractor
CL
Jul 10, 2026  
Senior Drainage Engineer
We are currently looking for a Senior Drainage Engineer to join a leading Tier 1 consultancy in Cardiff. You'll be working across a range of major infrastructure frameworks, delivering drainage and SuDS design on high-profile projects. £50 - £60 per hour / £375 - £450 per day (Inside IR35) Inside IR35 Initial 6 month contract, likely continual extensions through a healthy pipeline. Start date ASAP Key Responsibilities Lead the design of drainage and SuDS systems in line with UK and European standards Produce and review calculations, reports, and technical designs Prepare drainage strategies and support flood risk assessments Liaise with local authorities, sewer operators, and environmental bodies (e.g. EA, NRW) Work collaboratively within multidisciplinary teams across multiple projects Requirements Degree qualified (BEng/BSc/MEng/MSc) in Civil Engineering or Environmental discipline Chartered or working towards (ICE, CIWEM or similar) Strong experience in drainage and SuDS...
IR35 Status:
Inside IR35

CV-Library Cardiff, UK Contractor
CL
Jul 10, 2026  
Senior Drainage Engineer
We are currently looking for a Senior Drainage Engineer to join a leading Tier 1 consultancy in Liverpool OR Wymondham. You'll be working across a range of major infrastructure frameworks, delivering drainage and SuDS design on high-profile projects. £50 - £60 per hour / £375 - £450 per day (Inside IR35) Inside IR35 Initial 6 month contract, likely continual extensions through a healthy pipeline. Start date ASAP Key Responsibilities Lead the design of drainage and SuDS systems in line with UK and European standards Produce and review calculations, reports, and technical designs Prepare drainage strategies and support flood risk assessments Liaise with local authorities, sewer operators, and environmental bodies (e.g. EA, NRW) Work collaboratively within multidisciplinary teams across multiple projects Requirements Degree qualified (BEng/BSc/MEng/MSc) in Civil Engineering or Environmental discipline Chartered or working towards (ICE, CIWEM or similar) Strong experience in...
IR35 Status:
Inside IR35

CV-Library Liverpool, Merseyside Contractor
CL
Jul 09, 2026  
Principal Bridge Engineer
Principal Bridge Engineer Location: Leeds (Hybrid Working Available) Contract: 12 Months +  Hours: 40 Hours per Week Rate: £55.00 - £65.00 per hour Umbrella (Inside IR35) Overview We are seeking an experienced Principal Bridge Engineer to provide technical leadership and deliver bridge and structural engineering projects across a range of infrastructure programmes. Working within a multidisciplinary environment, you will be accountable for the quality, programme delivery, and technical oversight of defined work packages, ensuring successful project outcomes for clients and stakeholders. This role is ideal for an experienced Senior or Principal Engineer with a strong background in bridge design, assessment, inspection, and asset management who is looking to play a leading role in the delivery of complex infrastructure projects. Role Summary Experienced Senior / Principal Engineer providing technical leadership to deliver defined packages of bridge and structural...
IR35 Status:
Inside IR35

CV-Library Leeds, UK Contractor
CL
Jul 09, 2026  
Senior Storage & Backup Infrastructure Engineer
Senior Storage & Backup Infrastructure Engineer Newport (Hybrid - 3 days onsite) £550 per day (Inside IR35) 6-Month Contract SC Clearance Required An exciting opportunity has arisen for an experienced Senior Storage & Backup Infrastructure Engineer to join a high-profile enterprise infrastructure programme supporting critical services and large-scale IT environments. This role is ideal for an infrastructure specialist with deep expertise in NetApp storage technologies, enterprise backup solutions, and complex data centre environments. You will play a key role in the design, implementation, optimisation and support of business-critical storage and backup platforms while working closely with technical teams, architects and stakeholders. Key Responsibilities Lead the design, implementation and enhancement of enterprise storage and backup infrastructure. Act as the subject matter expert for NetApp technologies across project and operational activities. Deliver...
IR35 Status:
Inside IR35

CV-Library Newport PO30, UK Contractor
CL
Jul 09, 2026  
Systems Engineer
On behalf of our client, we are seeking to recruit a Systems Engineer on an initial 6 -month contract. As the Systems Engineer will join a team who is responsible for the satellite communication solutions which include antenna equipment and management software. In this role you will Support the Systems Engineering process, culture, competency and discipline, on day-to-day business activities, enabled by adequate Methods & Tools (M&T) products and services. Role: Systems Engineer Pay: £60 per day Via Umbrella Location: Portsmouth Contract: Monday- Friday, 37 Hours per week, 6 Months contract IR35 Status: Inside Security Clearance: Security Clearance required on submission, UK eyes only Essential Responsibilities Identify the stakeholder for the solution to be developed and capture their needs and expectations. Identify boundary of the solution to be developed. Elicit and validate requirements whilst considering the complete system lifecycle. Design and define...
IR35 Status:
Inside IR35

CV-Library Portsmouth, Hampshire Contractor
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