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Contractor 25
Engineering senior software engineer

25 senior software engineer jobs found

CL
Mar 31, 2026  
Senior C&I Engineer
Senior / Principal C&I Engineer – Staff Location: West Wales This is an excellent opportunity to join a leading engineering business during a period of continued growth as they support the Oil & Gas, Petrochemical, Renewable Energy, Hydrogen and Nuclear sectors. TUV Certified status would be a bonus, though not essential. Role & Responsibilities * Undertaking work providing Process Engineering support to a range of CAPEX and OPEX projects. * Performing safety specification and certification of safety instrumented systems. * Carry out SIL Verification using simplified equations. * Undertake design and checking of deliverables according to discipline and area of expertise. * Checking the quality of design work to ensure compliance with agreed client design specifications. * Preparation and checking of deliverables including drawings, schedules, datasheets, specifications, (input to control philosophies and narratives if applicable). * Development...
IR35 Status:
Unknown Status

CV-Library United Kingdom Contractor
CL
Mar 31, 2026  
Senior Electrical Engineer (hybrid working)
Senior Electrical Engineer – Contract – Remote Location: Remote / Hybrid Location: Hybrid This is an excellent opportunity to join a leading engineering business during a period of continued growth as they support the Oil & Gas, Petrochemical and Renewable Energy sectors. Our client can accommodate a hybrid working pattern with alternate weeks wfh / in the office in West Wales. The role will be outside IR35. Role & Responsibilities * Undertake design and checking of deliverables according to discipline and area of expertise. * Checking the quality of subcontractor design work to ensure compliance with agreed client design specifications. * Preparation and checking of deliverables including drawings, schedules, datasheets, specifications, (input to control philosophies and narratives if applicable). * Must understand wiring diagrams, control logic diagrams, system descriptions, system calculations, 1-line and 3-line AC drawings, AC & DC schematics, and...
IR35 Status:
Outside IR35

CV-Library United Kingdom Contractor
CL
Mar 31, 2026  
Senior / Principal C&I Engineer
Senior / Principal C&I Engineer – Contract Location: West Wales This is an excellent opportunity to join a leading engineering business during a period of continued growth as they support the Oil & Gas, Petrochemical, Renewable Energy, and Hydrogen sectors. TUV Certified status would be a bonus, though not essential. Role & Responsibilities * Undertaking work providing Process Engineering support to a range of CAPEX and OPEX projects. * Performing safety specification and certification of safety instrumented systems. * Carry out SIL Verification using simplified equations. * Undertake design and checking of deliverables according to discipline and area of expertise. * Checking the quality of design work to ensure compliance with agreed client design specifications. * Preparation and checking of deliverables including drawings, schedules, datasheets, specifications, (input to control philosophies and narratives if applicable). * Development of...
IR35 Status:
Outside IR35

CV-Library United Kingdom Contractor
CL
Mar 31, 2026  
Senior Electrical Engineer
Location: West Wales This is an excellent opportunity to join a leading engineering business during a period of continued growth as they support the Oil & Gas, Petrochemical, Renewable Energy and Nuclear sectors. Our client will consider applicants for either a staff or contract position – for a contractor the role will be outside IR35. Role & Responsibilities * Undertake design and checking of deliverables according to discipline and area of expertise. * Checking the quality of subcontractor design work to ensure compliance with agreed client design specifications. * Preparation and checking of deliverables including drawings, schedules, datasheets, specifications, (input to control philosophies and narratives if applicable). * Must understand wiring diagrams, control logic diagrams, system descriptions, system calculations, 1-line and 3-line AC drawings, AC & DC schematics, and be able to size equipment and perform cable sizing calculations * Participation...
IR35 Status:
Outside IR35

CV-Library Burton Ferry, Pembrokeshire Contractor
CL
Mar 28, 2026  
Senior Highway Engineer
Senior Highway Engineer A leading highways contractor is seeking an experienced Senior Highways Engineer to join its expanding highway engineering team based in Central London. The contractor delivers highways maintenance and improvement services across major TfL contracts, and the successful candidate will support delivery and design activities across a rapidly growing workload. The role will be varied and hands-on, combining highways design with technical support to the in-house design team. You will be joining a motivated team co-located with the delivery and design functions, enabling close collaboration and high-quality project outcomes. Role Responsibilities ·Deliver multidisciplinary highways projects from proposition through to construction, balancing competing demands and priorities. ·Review and approve highways infrastructure designs and technical outputs. ·Prepare and review technical reports, drawings, specifications, and schedules. ·Provide construction support...
IR35 Status:
Unknown Status

CV-Library Greater London, UK Contractor
CL
Mar 27, 2026  
Senior Planning Engineer
The Role Responsible for the development and management of project schedules. Establishes project breakdown structures and coding structures. Owns and manages the project baseline and monitors change. Understands and timelines are met. Provide project stakeholders with detailed performance reporting. Supports and mentors juniors personnel. Responsibilities Communicating with multi-level stakeholders to understand project goals, context and priorities. Manage/develop project schedules for the construction phase according to standard processes and procedures. A key team member in the coordination and management of projects. Gather information from stakeholders as required. Develop project reporting requirements, meeting cadence and reporting drumbeats. Perform schedule updates and monitor project progress against the baseline. Provide a detailed analysis of project status using industry standard measures and KPIs. Identify risks and opportunities within the schedule, supporting...
IR35 Status:
Unknown Status

CV-Library Middlesbrough, North Yorkshire Contractor
CL
Mar 27, 2026  
Senior Civil Engineer
Contract Senior Civil Engineer – Drainage & Highways 📍 Hampshire/Bristol or Cardiff offices - Hybrid 💰 Competitive Hourly Rate (Outside IR35 considered) A busy civil engineering consultancy is looking to appoint an experienced Senior Civil Engineer on a contract basis. This role will focus primarily on residential and commercial development schemes, with an emphasis on drainage and adoptable highways design. The Role You will be responsible for: Surface & foul water drainage design SuDS strategies and detailed design Flood Risk Assessments S104 drainage agreements S38 & S278 highway design and approvals Liaison with LLFAs, Environment Agency and Water Authorities Supporting projects from feasibility through to technical approval This is a hands-on technical role suited to someone comfortable working autonomously and delivering compliant, buildable solutions. Software Required (some of - not all are required) MicroDrainage Site 3D Causeway Flow Civil...
IR35 Status:
Outside IR35

CV-Library Cardiff, UK Contractor
CL
Mar 27, 2026  
Senior Civil Engineer
Contract Senior Civil Engineer – Drainage & Highways 📍 Remote Working available 💰 Competitive Hourly Rate (Outside IR35 considered) A busy civil engineering consultancy is looking to appoint an experienced Senior Civil Engineer on a contract basis. This role will focus primarily on residential and commercial development schemes, with an emphasis on drainage and adoptable highways design. The Role You will be responsible for: Surface & foul water drainage design SuDS strategies and detailed design Flood Risk Assessments S104 drainage agreements S38 & S278 highway design and approvals Liaison with LLFAs, Environment Agency and Water Authorities Supporting projects from feasibility through to technical approval This is a hands-on technical role suited to someone comfortable working autonomously and delivering compliant, buildable solutions. Software Required (some of - not all are required) MicroDrainage Civils 3D Causeway Flow About You Strong...
IR35 Status:
Outside IR35

CV-Library Leeds, UK Contractor
CL
Mar 27, 2026  
Senior Civil Engineer
A well-established, design-led civil engineering consultancy is looking to appoint an experienced Contract Senior Civil Engineer on a long-term, Outside IR35 basis. This is a fully remote role with a strong pipeline of secured work across commercial, industrial and data centre developments. The Role You’ll take ownership of infrastructure packages from concept through detailed design, with a particular focus on: Detailed levels strategy Surface & foul drainage design Drainage slope design and optimisation External works coordination Technical delivery for planning and construction stages Projects include large commercial schemes, industrial developments and major data centre infrastructure. Software MicroDrainage (essential) What We’re Looking For Proven UK development infrastructure experience Strong background in commercial / industrial schemes Confident working autonomously in a remote environment Able to deliver technically sound, buildable drainage and...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Mar 27, 2026  
Contract Senior Civil Engineer
Contract Senior Civil Engineer – Drainage & Highways 📍 Guildford/Hybrid 💰 Competitive Hourly Rate (Outside IR35 considered) A busy civil engineering consultancy is looking to appoint an experienced Senior Civil Engineer on a contract basis. This role will focus primarily on residential and commercial development schemes, with an emphasis on drainage and adoptable highways design. The Role You will be responsible for: Surface & foul water drainage design SuDS strategies and detailed design Flood Risk Assessments S104 drainage agreements S38 & S278 highway design and approvals Liaison with LLFAs, Environment Agency and Water Authorities Supporting projects from feasibility through to technical approval This is a hands-on technical role suited to someone comfortable working autonomously and delivering compliant, buildable solutions. Software Required (some of - not all are required) MicroDrainage Site 3D About You Strong experience in UK residential...
IR35 Status:
Outside IR35

CV-Library Surrey, UK Contractor
CL
Mar 21, 2026  
Software Testing Engineer
At TÜV SÜD we are passionate about technology. Innovations impact our daily lives in countless ways, and we are dedicated to being a part of that progress. We test, we audit, we inspect, we advise. We never stop challenging ourselves for the safety of society and its people. We breathe technology, we strive for professional excellence, and we leave a mark. We take the future into our hands. We are TÜV SÜD. Role Purpose This role focuses on modern, automation-first quality engineering, leveraging AI-assisted testing, autonomous test generation, and intelligent validation to accelerate delivery across multiple products and teams. The engineer will design, build, and evolve automation frameworks while introducing AI-driven capabilities (“vibe coding”, generative testing, self-healing tests, etc.) to improve software quality and team productivity. Please note this role is based out of our East Kilbride site (Glasgow) Key Responsibilities * Lead and evolve the end-to-end test...
IR35 Status:
Unknown Status

CV-Library United Kingdom Contractor
CL
Mar 21, 2026  
Senior Systems Engineer
Senior Systems Engineer (12 Month Fixed Term Contract) Denham Martin-Baker is the world’s leading manufacturer of ejection and crashworthy seats, saving over 7,805 lives to date. We combine cutting-edge engineering with a clear mission: protecting aircrew around the world. We are now recruiting a Senior Systems Engineer (12 month Fixed Term contract) to join our established Systems Engineering team at our Denham site. The Role: As a Senior Systems Engineer, you will lead complex analytical engineering activities across the full product lifecycle — from concept and development through to production and verification. You will be responsible for maintaining system requirements, conducting in-depth analyses, supporting system verification, and producing highly technical documentation required for internal, customer, and contractual purposes. You will also play a key role in mentoring Systems Engineers, helping maximise team capability, quality, and productivity while supporting...
IR35 Status:
Unknown Status

CV-Library Denham, Buckinghamshire Contractor
CL
Apr 02, 2026  
Tooling Engineer
Join a world-renowned aerospace and defence organisation as a Tooling Engineer in Gloucester on a hybrid basis Due to a drive for greater success, this advanced manufacturing business is currently searching for Tooling Engineer to add to their talented, hardworking team in Gloucester on an initial 3-6 months contract. Striving for innovation and creativity you can ensure no two days will be the same. The rate per hour: £35.00 - £40.00 per hour inside IR35 / umbrella The role: As the Tooling Engineer, you will be accountable for designing, developing and managing the manufacturing / commissioning of the tooling - to ensure on-time, high-quality products. Your expertise in engineering principles and tooling design will directly contribute to this project. Key Responsibilities: * Design and develop advanced tooling solutions to support manufacturing processes, ensuring optimal performance and reliability * Collaborate with cross-functional teams to identify tooling needs and...
IR35 Status:
Inside IR35

CV-Library Gloucestershire, UK Contractor
CL
Apr 02, 2026  
Controls Commissioning Engineer
JOB DESCRIPTION My Client is a people-focused company that values and invests in its employees. We offer a comprehensive benefits package that includes flexible holiday options, allowing you to buy and sell holiday days to suit your needs, and an employee profit share scheme that rewards your contributions to our success. we foster a supportive and dynamic work environment where your professional growth and personal development are encouraged and valued. Join us and be part of a team dedicated to innovation, excellence, and making a difference. JOB INTRODUCTION Are you ready to make an impact in the logistics industry? The Commissioning Engineer plays a crucial role in my clients Controls Team, ensuring the successful delivery of our projects. With opportunities to work on cutting edge UK logistics projects, you'll gain invaluable experience and continuously learn and develop. Join our passionate close-knit team and embark on a rewarding career where your skills and creativity...
IR35 Status:
Unknown Status

CV-Library Market Harborough, Leicestershire Contractor
CL
Apr 02, 2026  
Electrical Project Engineer
Our client is a Refinery which is located on the east coast of England in North Lincolnshire, United Kingdom. The Humber facility include crude distilling, naphtha reforming, fluid catalytic cracking, hydrodesulfurization, thermal cracking and delayed coking units. The refinery has two coking units with associated calcining plants. This is the only coking refinery in the United Kingdom, and a producer of high-quality specialty graphite and anode-grade petroleum cokes. The refinery also produces a high percentage of transportation fuels. The majority of the light oils produced by the refinery are distributed to customers in the United Kingdom by pipeline, railcar and truck, while the other refined petroleum products are exported throughout the world. They are currently seeking a skilled and experienced Electrical Project Engineer to join their team on a temporary basis initially covering 12 months but this could continue after. THE ROLE: Provide technical engineering expertise to...
IR35 Status:
Unknown Status

CV-Library United Kingdom Contractor
CL
Apr 01, 2026  
Site Engineer
Exciting Opportunity for a Site Engineer in the Water/Wastewater Industry Role: Site Engineer Location: Kingston Bagpuize Rate: £350 per day - CIS Duration: 12 months + Sector: Sewage Treatment Works About the business Join a dynamic contractor at the forefront of the industry, currently spearheading projects within the Thames Water framework. Our commitment to excellence has opened up an exciting opportunity for a talented Site Engineer to contribute to upcoming development works linked to a large Sewage treatment works (STW) in Oxford. Key Responsibilities: ·Execute setting out tasks with precision, ensuring accuracy in levelling and traversing. ·Collaborate with the Project Manager in overseeing day-to-day site operations, including surveying and progress reporting. ·Verify plans, drawings, and setting out co-ordinations for seamless project execution. ·Utilize modern survey methods and devices, including global navigation satellite systems and data collectors....
IR35 Status:
Outside IR35

CV-Library Kingston Bagpuize, Abingdon OX13, UK Contractor
CL
Apr 01, 2026  
Manufacturing engineer
Our client, a leading organisation in the Defence & Security sector, is currently seeking a Manufacturing Engineer to join their team on a contract basis in Glascoed. Key Responsibilities: Designing, implementing, and improving manufacturing processes to ensure efficiency and quality Collaborating with cross-functional teams to develop and implement manufacturing solutions Conducting root cause analysis and implementing corrective actions to resolve production issues Ensuring compliance with safety regulations and quality standards Developing and maintaining process documentation and work instructions Monitoring production metrics and driving continuous improvement initiatives Providing technical support to production teams and troubleshooting operational problems Coordinating with suppliers and contractors to ensure timely delivery of materials and services Job Requirements: Experience in manufacturing engineering within the Defence & Security sector Strong...
IR35 Status:
Unknown Status

CV-Library Pontypridd, Rhondda Cynon Taff Contractor
CL
Mar 29, 2026  
Design Manager
Design Manager  Contract type: Contract Scope: Outside IR35 Location: Manchester Industry: Water Purpose of the Role We are working with a specialist engineering consultancy providing design and infrastructure support across the rail and utilities sectors. The organisation supports projects from early design through to installation, delivering safe and efficient solutions on complex infrastructure programmes. The Design Manager will lead and manage multidisciplinary design teams delivering engineering projects within the regulated water industry. The role is responsible for ensuring design deliverables are completed on time, to the required quality and safety standards, while supporting the development of the design team and improving internal processes. Key Responsibilities Manage, direct, and develop engineers, CAD technicians, and graduates within the design team. Support the growth of the design team while maintaining a positive and collaborative working environment....
IR35 Status:
Outside IR35

CV-Library Manchester, UK Contractor
CL
Mar 29, 2026  
Assistant Design Engineer - Highways
Assistant Design Engineer - Highways   We are currently recruiting for an Assistant Design Engineer to support the delivery of highway maintenance, improvement, and traffic engineering schemes within a well-established highways and infrastructure programme. This role offers an excellent opportunity to develop technical design experience across highway maintenance, asset management, and active travel schemes, working closely with engineers, technicians, and key stakeholders.   Key Responsibilities ·Develop highway maintenance schemes from defect identification through to treatment selection and construction documentation ·Assist in the design of highway improvement, traffic engineering, pedestrian, and active travel schemes ·Support the production of forward programmes for highway maintenance works ·Assist in the management and delivery of highway condition inspections and asset surveys ·Update and utilise highway asset management systems ·Produce technical reports,...
IR35 Status:
Unknown Status

CV-Library Ipswich, UK Contractor
CL
Feb 14, 2026  
BMS Commissioning Engineer
We have a fantastic contract opportunity for an experienced BMS Commissioning Engineer to join an exciting project in London. On offer is an initial 3 to 6  month contract (with the potential to extend), £300 - £340 per day (outside IR35), and the opportunity to work for a successful BMS integration business. The BMS Commissioning Engineer position: - As a BMS Commissioning Engineer, you will have fantastic experience and knowledge of commissioning Building Management Systems, in particular Trend and Tridium systems.  You will be required to perform software modifications, writing, and generating graphics, working alongside a team engineers. Key skills of the BMS Commissioning Engineer: - Exceptional technical knowledge and experience of the BMS sector. Proven experience commissioning BMS systems Qualifications and experience with Trend and Tridium or Delta Ability to write and manipulate software and graphics. CSCS Skill card or equivalent Benefits of the BMS Commissioning...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
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