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Contractor 30
Engineering Outside IR35 software engineer

30 software engineer jobs found

CL
Dec 18, 2025  
Embedded Software Engineer
I'm recruiting for a small business in Cheltenham who are looking for an Embedded Software Contractor on a 3 month contract (outside IR35). The work is based around Zephyr RTOS on Nordic chips. Previous experience (in-depth!) is needed for this. ** Work can be done remotely after an initial period on-site. Also may require on-site visits to Cheltenham throughout depending on project progression. ** ROLE: Embedded Software Engineer LOCATION: Remote (Cheltenham) RATE: up to £60ph DURATION: 3 months Skills required for the Embedded SW Engineer: * C * Zephyr RTOS * Nordic chips If you're interested, please apply below or get in touch with any questions Cheers, Nathan
IR35 Status:
Outside IR35

CV-Library GL50, Montpellier, Gloucestershire Contractor
CL
Dec 12, 2025  
Software V&V Engineer: (MBSE / Embedded Systems)
Software V&V Engineer: (MBSE / Embedded Systems) Location: Aldershot Contract Type: Contract (6 months) Pay: £55 Per Hour (Outside IR35) About the Role We’re seeking a highly capable Software Verification & Validation Engineer to design and implement a brand-new automated software test framework for a Model Based Systems Engineering (MBSE) environment. What You’ll Do * Design, build, and implement a new automated test framework to validate embedded software against requirements. * Lead the verification & validation of a software runtime compiled alongside MBSE-generated code. * Perform test execution and hardware integration using ARM-based processors. * Prepare and run demonstrations of the MBSE code, runtime, and verification outcomes. Key Skills: * Strong embedded C coding * Code coverage analysis (GCOV) * Unit testing frameworks (CMocka) * Hardware integration experience (ARM-class MCUs) Desirable: * RTOS (RTEMS or similar) * ARM-M7 / Microchip...
IR35 Status:
Outside IR35

CV-Library GU11, Aldershot, Hampshire Contractor
CL
Dec 10, 2025  
Software Test Engineer
Software Test Engineer Location: Aldershot Contract: 6 Months (Extension Highly Likely) Rate: £375 per day (Outside IR35) Role Overview We’re seeking a seasoned Software Test Engineer to drive verification and validation activities. This role centres on HIL test development, test execution, automation, and ensuring software meets performance, safety, and quality standards. Key Responsibilities * Create clear, structured test cases and specifications from system and software requirements * Develop and maintain HIL test setups using MATLAB/Simulink * Run automated and manual tests to verify embedded software functionality * Interpret test outputs, compile reports, and support fault investigation * Review and refine software requirements from a testing and validation viewpoint Skills & Experience * Strong background in software or systems testing within automotive environments * Practical experience with HIL platforms (dSPACE ideal) * Solid understanding of...
IR35 Status:
Outside IR35

CV-Library GU11, Aldershot, Hampshire Contractor
CL
Dec 18, 2025  
Lloret - BMS
I am looking for an experienced BMS/Controls & Commissioning Engineer to join my client in London, starting ASAP My client has worked on several well known projects in London, including football stadiums, airports, city buildings such as Apple HQ and more. This role focuses heavily on Schneider EcoStruxure / StruxureWare / PME / Unity Pro software, so strong hands-on experience is essential. Key Requirements: BMS commissioning and controls expertise Strong Schneider software skills (EcoStruxure, StruxureWare, PME, Unity Pro) Rate: Flexible, paid hourly / daily and outside IR35 Location: London (varies depending on project) If this is for you, to discuss the role and rates in more detail please apply or get in touch
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Dec 14, 2025  
Structural Engineer
Our client has an ongoing commitment to the delivery of operational brilliance and would like a skilled Structural Engineer to continue their mission. This leading engineering, architecture, construction, and environmental consultancy are offering a contract role, outside IR35, with the opportunity to work from their London office, on a hybrid basis. Don't miss this incredible opportunity to work on a variety of Data Centre, Industrial, Corporate, and Manufacturing Facilities projects. -Competitive hourly rate (depending on experience). -Hybrid working arrangement (two days on site). Responsibilities: -Oversee detailed structural design production and development, from concept through to completion, ensuring alignment with UK industry standards, and key regulations. -Create, develop, and review drawings, structural elements and components, and sketches for a range of multidisciplinary projects. -Liaise with CAD technicians and professionals, ensuring the production and...
IR35 Status:
Outside IR35

CV-Library City of London, London Contractor
CL
Dec 14, 2025  
Principal Telecoms Engineer
New Job Opportunity - Principal Telecoms Engineer - Initial 12 Month Outside IR35 Contract Our Client has a requirement for a Principal Telecom Engineer, who will be required to work on a contract basis in Woking. Location: Central London, SW1V 1PX Contract Length: Initially 12 Months IR35 Status: Outside IR35 Requirements: 5 days per week in office (from early on Fridays) Deliverables: Review / provide guidance for preparation of all discipline engineering and design deliverables such as Design Basis, specifications, datasheets, BOM, Equipment location Plan, JB and Cable schedule, 3D model, Block and Schematics drawings etc Complete or review calculations for: CCTV, PAGA, Radio, Telephone lines etc. Provide guidance/work on field equipment’s (Cameras, Speaker, Call station, Tower, Turnstile, Road Barrier, Hotline and Analogue Telephone) etc. Prepare / provide guidance for preparation of Telecom Network Architecture (Overall Block Diagram, Interfaces etc) design, procurement...
IR35 Status:
Outside IR35

CV-Library Woking, UK Contractor
CL
Dec 14, 2025  
Senior EC&I Engineer
Senior EC&I Engineer g2 are working with one of the leaders in the nuclear industry that are currently recruiting for a Senior EC&I Engineer to help support with a large scale development. This is a 12 month contract Outside IR35 working 4 days on site 1 day WFH. The ideal candidate: * Extensive experience within ECI - currently or previously working at Principal or Senior level * Extensive and proven Nuclear experience, ideally recent * Associated software knowledge * Current or previous SC clearance How to Apply If you have the experience and technical expertise required, please click and apply
IR35 Status:
Outside IR35

CV-Library Reading, Berkshire Contractor
CL
Dec 14, 2025  
Civil Design Engineer
Contract Outline: Role: Civil Design Engineer (2-5 years experience) Location: Macclesfield (hybrid working) Sector: Wastewater Contract Length: 12 months Outside IR35 Rate: £35-37.50ph Role Overview: Design of civil infrastructure for the water sector, for feasibility, conceptual and detailed designs - namely focused on pipelines. Key Responsibilities Producing Feasibility, Conceptual and Detailed Design documents. Assist design drawings using AutoCAD 2D / 3D or AutoDesk Civil 3D (or similar) software (working alongside CAD Engineer). Preparing design packs for internal and external client reviews. Producing designs in accordance with the relevant client and water network design codes, regulations, specifications and procedures. Working in accordance with CDM Regulations 2015. Attending and participating in internal and external meetings to review designs. Pipeline / Valve support Drawings, General Arrangement Drawings, Thrust / anchor block Drawings, Site infrastructure...
IR35 Status:
Outside IR35

CV-Library Macclesfield, Cheshire Contractor
CL
Dec 13, 2025  
Manufacturing Engineer
Job Specification: Manufacturing Engineer Location: Redditch, UK Contract Length: 12 Months Working Arrangement: 100% Onsite Rate: £30-35(Outside IR35) – Maximum Work Experience & Qualifications * 1–3 years of hands-on experience in a Manufacturing Engineering environment. * Strong knowledge of Aerospace QMS / Automotive quality requirements, including: * AS9100 * OSHAS * TS 16949 * Various ISO certifications * Ability to read and interpret engineering drawings. * Solid understanding of manufacturing processes, drafting, special processes, CAD/CAM, and process planning. Job Requirements & Responsibilities Manufacturing & Process Engineering * Strong understanding of end-to-end manufacturing processes. * Participate in cross-functional meetings and collaborate with design, manufacturing, and support functions. * Create and maintain work...
IR35 Status:
Outside IR35

CV-Library Redditch, Worcestershire Contractor
CL
Dec 13, 2025  
Principal WTG Engineer
NES Fircroft is looking for a Principal WTG Engineer to support their Offshore wind client, based in London. This is a long term, rolling 12 month (outside IR35) contract and will require the individual to be based 3 days per week in the office. As Principal Engineer, you will report to the Floating ILA Engineering Manager within the Offshore Wind business line, supporting all activities related to turbine design and interface with the turbine OEM. The client is ideally looking for a Chartered Engineer, with aeroelastic / aero-dynamics design experience, on both floating & fixed offshore wind substructures. Responsibilities: Building and verification of aeroelastic model of the turbine Manage the turbine controller tuning and development Perform all required checks of the turbine and controller Support the turbine tower design Monitor, support and verify the ILA Laise with external contractors related to the turbine model and controller Participate in the technical...
IR35 Status:
Outside IR35

CV-Library Kingston upon Thames, UK Contractor
CL
Dec 13, 2025  
Project Engineer - Scrum Master
Role: Project Engineer (Scrum Master) Location: Warwickshire Contract length: 6 Months (Rolling) Rate: £30 p/h+ (Depending on Experience) - Outside IR35 Role Overview The Scrum Master / Project Engineer will act as both the agile delivery facilitator and technical integrator across cross-functional BMS squads. You’ll champion agile best practices while steering project execution and integration milestones involving control systems, embedded software, and hardware such as SDU Controls, CSC modules, and WGM platforms. Key Responsibilities Agile Facilitation & Planning * Lead agile ceremonies including daily stand-ups, sprint planning, reviews, and retrospectives * Coach the squad on agile principles and foster continuous delivery culture * Maintain healthy backlogs in collaboration with Product Owners and technical leads Project Engineering & Delivery Tracking * Monitor engineering tasks, hardware dependencies, and test execution across BMS domains *...
IR35 Status:
Outside IR35

CV-Library Warwick, Warwickshire Contractor
CL
Dec 13, 2025  
Senior / Principal Mechanical Engineer (hybrid)
Senior Mechanical Engineer – Contract – West Wales / Hybrid Location: West Wales / 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. This role is deemed to be outside IR35. Our client is based in West Wales and can accommodate a hybrid working pattern. Role & Responsibilities * Participate in relevant meetings such as Design Reviews, Model Reviews and HAZIDs. * Execute all Piping/Mechanical Engineering activities and maintain technical integrity. * Familiarity with piping, static equipment and rotating equipment. * Develop and contribute to mechanical equipment specification / datasheets to allow purchase of range of equipment. * Oversee designers in the development of multi-discipline plant upgrade project. * Supporting the development of Mechanical and Piping layout for a range of energy projects at different...
IR35 Status:
Outside IR35

CV-Library SA72, Burton Ferry, Pembrokeshire Contractor
CL
Dec 13, 2025  
Senior / Principal C&I Engineer
Senior / Principal C&I Engineer – Contract Location: West Wales / 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, Renewable Energy, Hydrogen and Nuclear sectors. TUV Certified status would be a bonus, though not essential. Our client is based in West Wales and ideally needs somebody who can be in their offices a minimum of 3 days p/w. 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,...
IR35 Status:
Outside IR35

CV-Library United Kingdom Contractor
CL
Dec 13, 2025  
Senior Process Engineer
Principal Process 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 and Renewable Energy sectors. Our client requires a minimum of 3 days per week to be based in their offices in West Wales. This role is deemed outside IR35. Role & Responsibilities * Responsible for developing feasibility studies and FEED deliverables for downstream projects. * Develop the scope of work / basis of design for studies and projects. * Development and checking of process calculations. * Preparation and checking of process deliverables – PFDs, P&IDs, datasheets, specifications, process descriptions, philosophies and narratives. * Supporting safety related calculations reviews – What If, Hazop SIL Assessment, etc. * Utilise process simulation software as required for the development of process deliverables. * Attend in-house and...
IR35 Status:
Outside IR35

CV-Library Burton Ferry, Pembrokeshire Contractor
CL
Dec 13, 2025  
Senior Electrical Engineer
Location: Cardiff 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 in...
IR35 Status:
Outside IR35

CV-Library Burton Ferry, Pembrokeshire Contractor
CL
Dec 12, 2025  
Senior Electrical Design Engineer
Senior Electrical Design Engineer – Data Centre Project – Central London Location:         London Bridge (Hybrid working available) Contract:         6 Months (Immediate Start Preferred) Rate:                £48 per hour (Ltd / Outside IR35 subject to assessment) A leading international building services consultancy is seeking an experienced Senior Electrical Design Engineer to join their specialist data centre design team on a 6-month freelance contract. Based out of modern offices in London Bridge, you will be working on a major hyperscale data centre development across RIBA Stages 3–5. Key Responsibilities Lead electrical design packages including LV distribution, lighting, power, containment and resilience systems Coordination with multidisciplinary teams including mechanical, sustainability and BIM Attend design team meetings and manage client interface Ensure compliance with relevant standards, codes and project specifications Review and sign-off drawings,...
IR35 Status:
Outside IR35

CV-Library City of London, London, UK Contractor
CL
Dec 11, 2025  
M&E Asset Surveyor/ Building Services Engineer- Ireland/Germany
TSA Surveying have recently been instructed to recruit several M&E asset Surveyors to commence a large European survey programme comprising of several sites. The survey programme is due to start in December and will run through into the new year, comprised of various sites in Ireland and a site in Germany. We are looking to build a team of around 6-8 M&E qualified individuals in total. We are looking for qualified M&E Asset Surveyors, or an individual with a prior background within MEP services, either for an FM provider, consultancy, or direct for a building owner, to carry out a room-by-room condition survey, including verification and lifecycle. All data will be collected on a tablet device utilising the consultants own in-house software.  Candidates must hold a valid passport and be willing to drive throughout Europe. The role is outside of IR35. If you would be interested, please apply ASAP, as we are currently constructing a shortlist for this role
IR35 Status:
Outside IR35

CV-Library United Kingdom Contractor
CL
Dec 11, 2025  
M&E Asset Surveyor/ Building Services Engineer- Ireland/Germany
TSA Surveying have recently been instructed to recruit several M&E asset Surveyors to commence a large European survey programme comprising of several sites. The survey programme is due to start in December and will run through into the new year, comprised of various sites in Ireland and a site in Germany. We are looking to build a team of around 6-8 M&E qualified individuals in total. We are looking for qualified M&E Asset Surveyors, or an individual with a prior background within MEP services, either for an FM provider, consultancy, or direct for a building owner, to carry out a room-by-room condition survey, including verification and lifecycle. All data will be collected on a tablet device utilising the consultants own in-house software.  Candidates must hold a valid passport and be willing to drive throughout Europe. The role is outside of IR35. If you would be interested, please apply ASAP, as we are currently constructing a shortlist for this role
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Dec 11, 2025  
M&E Asset Surveyor/ Building Services Engineer- Ireland/Germany
TSA Surveying have recently been instructed to recruit several M&E asset Surveyors to commence a large European survey programme comprising of several sites. The survey programme is due to start in December and will run through into the new year, comprised of various sites in Ireland and a site in Germany. We are looking to build a team of around 6-8 M&E qualified individuals in total. We are looking for qualified M&E Asset Surveyors, or an individual with a prior background within MEP services, either for an FM provider, consultancy, or direct for a building owner, to carry out a room-by-room condition survey, including verification and lifecycle. All data will be collected on a tablet device utilising the consultants own in-house software.  Candidates must hold a valid passport and be willing to drive throughout Europe. The role is outside of IR35. If you would be interested, please apply ASAP, as we are currently constructing a shortlist for this role
IR35 Status:
Outside IR35

CV-Library Birmingham, UK Contractor
CL
Dec 11, 2025  
M&E Asset Surveyor/ Building Services Engineer- Ireland/Germany
TSA Surveying have recently been instructed to recruit several M&E asset Surveyors to commence a large European survey programme comprising of several sites. The survey programme is due to start in December and will run through into the new year, comprised of various sites in Ireland and a site in Germany. We are looking to build a team of around 6-8 M&E qualified individuals in total. We are looking for qualified M&E Asset Surveyors, or an individual with a prior background within MEP services, either for an FM provider, consultancy, or direct for a building owner, to carry out a room-by-room condition survey, including verification and lifecycle. All data will be collected on a tablet device utilising the consultants own in-house software.  Candidates must hold a valid passport and be willing to drive throughout Europe. The role is outside of IR35. If you would be interested, please apply ASAP, as we are currently constructing a shortlist for this role
IR35 Status:
Outside IR35

CV-Library Leeds, UK Contractor
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