Outside IR35 Design Engineer Contract Jobs
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Hardware Design Engineer
Posted 1 day ago by Verso Recruitment Group
About the clientA UK-based developer and manufacturer of electronic products, moving a design through compliance and int...
- Rate £65 per hour
- Category Outside
- Work type Not specified
- Location Central Bedfordshire, England, United Kingdom
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Solidworks Design Engineer - Food Process Equipment
Posted 5 days ago by Ganymede Solutions
Solidworks Design Engineer -Food Process Equipment 12-Month ContractWe are seeking an experienced Food Process Design En...
- Rate Not specified
- Category Outside
- Work type Not specified
- Location Peterborough, Cambridgeshire
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About Our Outside IR35 Design Engineer Contract Roles
What does a design engineer contractor do?
As a contract Design Engineer, you are hired to develop technical designs for mechanical, structural, electrical, or systems engineering components, assemblies, and products across a range of industrial and infrastructure sectors. The work involves translating requirements and specifications into detailed engineering designs, producing drawings and models using CAD software, conducting engineering calculations and analysis, reviewing and approving supplier and subcontractor designs, and supporting the manufacturing or construction phase to resolve technical issues as they arise. Design Engineer contractors are brought in on product development programmes, capital projects, and engineering change programmes where additional design capacity or specialist technical expertise is needed on a project basis.
The technical skills expected vary by discipline and sector. Mechanical Design Engineers need proficiency in 3D CAD software, most commonly SolidWorks, CATIA, or Inventor, alongside experience with FEA analysis tools for structural and thermal analysis. Electrical Design Engineers require expertise in electrical schematic design, cable and panel design, and familiarity with relevant standards including BS 7671 and IEC standards. Civil and structural design roles require proficiency in AutoCAD Civil 3D, Revit, or Tekla and knowledge of Eurocodes and British Standards. Across all disciplines, experience producing designs that are fit for manufacture or construction, managing the interface with procurement and production teams, and producing clear and accurate engineering documentation is essential.
What is the market like for design engineer contractors?
Contract Design Engineer work sits within a consistently active specialist market across manufacturing, aerospace, defence, oil and gas, construction, and infrastructure sectors. The aerospace and defence supply chain, the automotive sector, and the growing offshore energy market are among the most significant sources of design contract work in the UK. The transition to electrification across automotive and aerospace is creating new demand for electrical and systems design engineers with experience in high-voltage and power electronics applications. Compensation reflects the technical specialism and sector experience required, with senior Design Engineers on safety-critical or novel technology programmes commanding rates at the top end of the engineering contractor market.
What does Outside IR35 mean?
IR35 is UK tax legislation that determines whether a contractor is genuinely self-employed or working in a manner that resembles employment. When a contract is classified as outside IR35, the engagement is treated as a business-to-business arrangement. The contractor operates through their own limited company, invoices for services, and manages their own tax affairs including corporation tax, self-assessment, and VAT where applicable.
Outside IR35 engagements are assessed against three key factors: the degree of control the client exercises over how the work is delivered, whether the contractor has a genuine right to provide a substitute, and whether there is a mutuality of obligation between the parties. Contracts that demonstrate contractor autonomy, project-based delivery, and the absence of ongoing employment obligations are more likely to sit outside IR35. Since April 2021, responsibility for making this determination sits with the end client for medium and large private sector organisations.
On QualityContracts.co.uk, approximately 28% of roles with a stated IR35 status are classified as outside IR35. The proportion varies by sector and role type, with some disciplines seeing a significantly higher or lower share of outside IR35 opportunities. Each listing on this page displays its IR35 status where provided by the hiring organisation.
What design engineer roles are usually Outside IR35?
Design engineering shows a perfectly even IR35 split, with around 50% of contracts with a stated status sitting on each side. The split reflects the discipline's dual nature: project-based design work for specific products or systems is a natural fit for outside IR35, while ongoing design support within the client's engineering team does not. Automotive, aerospace, and industrial manufacturing companies commission most contract design engineering work. CAD proficiency in tools specific to the sector, whether CATIA, SolidWorks, or Creo, is the baseline requirement.
How much do design engineer contractors usually earn when working Outside IR35?
Contract rates for design engineer roles typically range from £350 to £650 per day, depending on the scope of the role, required expertise, and the delivery expectations of the engagement. Rates shown are for outside IR35 engagements and reflect the gross day rate paid to the contractor's limited company before any personal tax obligations.
How many Outside IR35 design engineer vacancies are there on Quality Contracts?
Over the past twelve months, we have tracked over 300 design engineer contract roles across the site. Of the roles currently listed on our site, around one in four are Outside IR35. Data reviewed up to September 2026.