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Contractor 28
Engineering Outside IR35 Hertford

28 jobs found in Hertford

CL
Apr 21, 2026  
Lead Piping Designer
Lead Piping Designer - Addison Project, Harlow For over 25 years, Addison Project plc has delivered innovative, sustainable engineering solutions across the chemical, pharmaceutical, energy, and food & beverage sectors. As a family‑owned business with UK‑wide coverage, we combine technical excellence with a collaborative, client‑focused approach. Our fully integrated EPCM capability supported by strong CDM and HSSEQ leadership and accredited management systems ensures projects are delivered safely, efficiently, and to the highest standards from concept through to commissioning and start‑up. If you're passionate about engineering and want to join a dynamic, people‑focused consultancy driving progress and sustainability across the UK’s manufacturing and process industries, Addison Project is the place to grow your career. Job Type: Contract Outside IR35 Start: Spring 2026 Location: Harlow, Essex with travel to site in Home Countries Workscpe Addison Project Plc are seeking...
IR35 Status:
Outside IR35

CV-Library Harlow, Essex Contractor
CL
Apr 21, 2026  
Senior Process Engineer
Senior Process Engineer- Addison Project, Harlow For over 25 years, Addison Project plc has delivered innovative, sustainable engineering solutions across the chemical, pharmaceutical, energy, and food & beverage sectors. As a family‑owned business with UK‑wide coverage, we combine technical excellence with a collaborative, client‑focused approach. Our fully integrated EPCM capability supported by strong CDM and HSSEQ leadership and accredited management systems ensures projects are delivered safely, efficiently, and to the highest standards from concept through to commissioning and start‑up. If you're passionate about engineering and want to join a dynamic, people‑focused consultancy driving progress and sustainability across the UK’s manufacturing and process industries, Addison Project is the place to grow your career. Role: Senior Process Engineer (Contract – Outside IR35) Location: Harlow Contract: 12 months Start Date: Spring 2026 Workscope Addison Project Plc invites...
IR35 Status:
Outside IR35

CV-Library Harlow, Essex Contractor
CL
Apr 21, 2026  
Civil & Structural Design Engineer
Civil & Structural Design Engineer, Harlow, Contract For over 25 years, Addison Project plc has delivered innovative, sustainable engineering solutions across the chemical, pharmaceutical, energy, and food & beverage sectors. As a family‑owned business with UK‑wide coverage, we combine technical excellence with a collaborative, client‑focused approach. Our fully integrated EPCM capability supported by strong CDM and HSSEQ leadership and accredited management systems ensures projects are delivered safely, efficiently, and to the highest standards from concept through to commissioning and start‑up. If you're passionate about engineering and want to join a dynamic, people‑focused consultancy driving progress and sustainability across the UK’s manufacturing and process industries, Addison Project is the place to grow your career. Role: Civil & Structural Design Engineer Location: Harlow Start Date: Spring 2026 Status: 6 months, Outside IR35 Workscope Addison Project Plc are...
IR35 Status:
Outside IR35

CV-Library Harlow, Essex Contractor
CL
Apr 21, 2026  
Project Manager
Role: Project Manager Status: Contract, 12 months outside IR35 Location: Harlow Addison Project Plc are seeking a PSC contractor to provide Project Management services to support a project in Greater London. Workscope: * To Provide engineering design-based Project Management services from Front End through detailed design. * Full responsibility for the delivery to install a new process integrated into an operational manufacturing plant. Services to be provided: * Complete project management services from Front End through detailed design * Day-to-day client interface and stakeholder management * Provide guidance to client teams and the construction manager * Plan and control scope, schedule, cost and risk * Coordinate multi-discipline design (Process, Mech, EC&I, Civils/Struct) and constructability reviews. * Lead all on site activites, proactive client, design and construction team communication is key for this role *...
IR35 Status:
Outside IR35

CV-Library CM20, Harlow, Essex Contractor
CL
Apr 18, 2026  
RD&T Software Engineer
Are you a RD&T Software Engineer? Do you have experience working directly with RD&T technology? Are you confident developing software tools for tolerance analysis, variation simulation, and robust design? If so, a market leader is currently looking for an RD&T Software Engineer on an Outside IR35 contract basis! RD&T Software Engineer OUTSIDE IR35 Contract Monday to Friday (Days) Leamington Spa RD&T Software Engineer Job Description: Develop and maintain software tools for tolerance analysis, variation simulation, and robust design, enabling engineers to evaluate product performance under real-world variability. Implement statistical models and algorithms (e.g., Monte Carlo simulation, Design of Experiments) to analyse variation, predict risk, and support data-driven design decisions. Integrate RD&T solutions with CAD and PLM systems Collaborate with cross-functional teams including design, manufacturing, and quality engineering to translate requirements...
IR35 Status:
Outside IR35

CV-Library Luton, UK Contractor
CL
Apr 18, 2026  
Project Manager - BMS (contract)
BMS PROJECT MANAGER (Contract) London (hybrid/flexible) | 6-12 months | £400-£500 per day (Outside IR35) We're working with a prestigious client in the building controls industry who are looking for an experienced BMS (building management systems) Project Manager to oversee a range of small to large-scale projects across London and the surrounding areas. This is a great opportunity for someone with strong BMS expertise who enjoys leading projects from start to finish, ensuring quality, budget and timescales are consistently achieved. What you'll be doing: Leading contract meetings and managing project status from handover through to completion Working closely with customers to understand and deliver site-specific requirements Providing technical guidance to clients and colleagues across BMS projects Managing budgets, supplier orders and ensuring efficient project cash flow Designing control strategies, point lists and system descriptions for commissioning teams Staying up...
IR35 Status:
Outside IR35

CV-Library City of London, London Contractor
CL
Apr 23, 2026  
Salesforce Engineer | £400 – £450 | Outside IR35 | 6 Months | Remote First
Salesforce Engineer | £400 – £450 | Outside IR35 | 6 Months | Remote First   We’re recruiting for an experienced Salesforce Engineer for a 6-Month contract role. This position will play a key role in leading Salesforce refactoring, modernising backend systems, and driving modern engineering practices across our clients platform. Offering £400 - £450 per day, this role is determined as Outside IR35 and may require occasional travel to the office most local to you.   Key Requirements Take ownership of large‑scale Salesforce Apex refactoring and backend process improvements Enhance Salesforce integration architecture, reliability, CI/CD, and automated testing Drive modern engineering practices and support AI‑assisted development tools Resolve technical debt, improve performance, and ensure scalable architecture Requires strong Salesforce Apex, Java, CI/CD, integrations, automation, and refactoring experience Previous experience working in Fintech or regulated environments is...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Apr 17, 2026  
Contract Senior Structural Engineer
Contract Senior Structural Engineer (OUTSIDE IR35) Central London c£45 p/h 12 months Immediate Start Contract Senior Structural Engineer **OUTSIDE IR35** A major engineering consultancy in Central London is currently looking to recruit a Senior Structural Engineer for a minimum of 12 months. Our client is a leading London consultancy who have an excellent market presence. The successful Structural Engineer will be given the opportunity to work on major Healthcare refurbishment project. Previous large scale buildings design experienced would be advantageous. Ideally our client is looking for someone with strong refurbishment knowledge and good working knowledge of Masterseries software package. Steel work experience will also be looked upon favourably. Hybrid working can be offered. The ideal applicant will have an excellent track record as a structural engineer and ideally have a minimum of 10 years design experience. On offer is an immediate start with excellent...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Apr 14, 2026  
Mechanical Estimator
My client requires a Mechanical Estimator to work a mix from home and the clients offices in Central London on a long term contract basis. Paying between £(Apply online only) a shift + Outside IR35 + Working from Home and client office in Central London. You will need 5 years experience as an Mechanical Estimator with a proven track record of tendering on commercial projects. As an experienced Mechanical Estimator you will be conversant on Amtech or Trimble software and have the ability to produce accurate tenders. You will need to be Mechanically biased or qualified, ideally to HNC/HND level and have a minimum of 5 years’ experience in a similar position and be comfortable producing tenders with values ranging from £1mill - £3 million In return you can expect to work for a financially stable company who can provide real, long term stability and supportive work colleagues. Starting salary £(Apply online only) a day + Outside IR35 + working a mix from Home and the clients offices....
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Feb 14, 2026  
BMS Service Engineer
BMS Service Engineer Contract 3 – 6 months London & M25 We are offering an accomplished BMS Service Engineer £38 - 45 per hour (outside IR35) to join a well-established Controls company on a contract to cover London and the M25 area. This is an initial 3 – 6 month contract with potential to extend further. The BMS Service Engineer position:- As a BMS Service Engineer, you will need to demonstrate exceptional technical understanding of BMS, in particular Trend control systems.   Your duties will include carrying out service and maintenance on BMS Control systems along with small works.  You will be expected to work independently using your own skill and initiative as well as part of a larger team of engineers when required. Key skills of the BMS Service Engineer:- Exceptional technical knowledge and experience of the BMS sector. Proven experience of carrying out servicing and small works on BMS Controls Systems. Qualifications and experience with Trend control systems....
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Feb 14, 2026  
BMS Project Manager
We have a fantastic contract opportunity for an experienced BMS Project Manager to join an exciting project in London. On offer for the successful BMS Project Manager is a 12 month contract, £350 - £450 per day, and the opportunity to work for a successful BMS intelligent integration business. The BMS Project Manager role:- As a BMS Project Manager, you will be a highly skilled, professional and driven individual who has a wealth of knowledge and background in the BMS sector. You will be required to liaise confidently and positively with the client delivering a fantastic service, attending progress meetings, managing sub-contractors, commissioning engineers, and covering all aspects of project management. To apply you must have a proven track record of managing large BMS projects. Key Skills required of BMS Project Manager:- * Exceptional knowledge and background in the BMS industry. * Proven track record of managing large BMS projects, all aspects. * Strong commercial and...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Feb 14, 2026  
BMS Commissioning Engineering
BMS Commissioning Engineer, Tridium, Trend or Siemens Immediate start 4 - 6 month contract £300 - £360 per day Our client requires an accomplished BMS Commissioning Engineer with Tridium, Trend or Siemens Building Management Controls experience to join their team on either a project in London or a site in Hertforshire . There are several roles and projects currently available in: the City, East London and also in Hertfordshire, the best site would depend on your location and experience for each project. This is on a contract basis and will initially run for 4 to 6  months. To start immediately and is likely to be extended on a rolling basis.  This position could also be as the Lead Commissioning Engineer if you have the right experience and the rate would then reflect this. Key skills required:- Experienced in the Commissioning of Building Management Systems ( BMS ) Qualified and experienced with Tridium ,Trend or Siemens Control systems. CSCS Skill Card or equivalent is...
IR35 Status:
Outside IR35

CV-Library London, 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
CL
Feb 14, 2026  
BMS Commissioning Engineer
BMS Commissioning Engineer, Cylon or Tridium London £300 to £340 per day, Weekly pay Our client requires an accomplished BMS (Building Management Systems) Commissioning Engineer with Cylon Controls (or Tridium) experience to work on a major prestigious project in Central London. The work will involve the commissioning of Fan Coils Units using Cylon Controls, with on-going major plant commissioning works available thereafter. This contract will initially run for 6 months, however opportunity for extension and to join exciting projects in the future will be available for the right candidate. Role Profile The successful applicant for this BMS Commissioning Engineer role will need to have  experience of using Cylon or Tridium controls to commission Fan Coil Units and major plant Key skills required:-   Experienced in the Commissioning of Building Management Systems (BMS) Qualified and experienced with Cylon or Tridium Control systems. CSCS Skill Card or equivalent. £300 - £340 –...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Feb 14, 2026  
BMS Service Engineer
We have a fantastic opportunity for a proficient BMS Service Engineer to join a well-established building controls business working on multiple contracts in London on a contract basis. This contract position offers an excellent hourly rate paid weekly ( outside IR35) Company Profile Our client is a household name in the world of BMS providing full turnkey solutions to the Building Energy Management sector since the late 90’s. With their wealth of expertise, they are able to secure projects of all size and type and deliver a best-in-class service from design all the way to end user handover. The Role of the BMS Service Engineer As a BMS Service Engineer you will be responsible for the pre-planned and reactive maintenance of Building Management Systems, predominantly across London. You will have in-depth knowledge of BMS (Building Management Systems) hardware including fault finding, wiring and networking. You will possess the knowledge and experience to be involved with small...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Apr 24, 2026  
Manufacturing Engineer
Contract Manufacturing Engineer Contract - 52 weeks - £47.84 per hour (umbrella) The Opportunity We are seeking a Contract Manufacturing Engineer to join a leading organisation in the defence and advanced electronics sector. You will support the development and production of mission-critical systems across multiple domains, working within cross-functional project teams. Key Responsibilities Develop and implement manufacturing processes to support new product introduction Support manufacturing governance, planning, and lifecycle reviews Analyse production data to inform decision-making and improve efficiency Resolve production issues and support shop floor activities Drive continuous improvement in processes, capacity, and workflow Ensure product quality through validation and process control Maintain manufacturing documentation and data Contribute to problem-solving activities (e.g. 8D) Mentor junior team members and promote best practices Required Skills & Experience...
IR35 Status:
Outside IR35

CV-Library Dagenham, London Contractor
CL
Apr 23, 2026  
Contract Mechanical Technician
Redline has a fantastic opportunity for a Contact Mechanical Technician based in Colchester, Essex. This role has an indicative OUTSIDE IR35 determination therefore we can accept candidates who would like to operate through their own PSC. You'll be joining a global leader in the Electronics industry working at their R&D hub on products worth up to $1 million. You will be working on assembling and modifying machines to customer specifications, working to tight tolerances and within a high precision engineering environment. Key Skills Required - Contract Mechanical Technician based in Colchester, Essex: - Experience in Mechanical Assembly - Experience working in an engineering environment - Experience with mechanisms and movements For more information or to apply for the Contract Mechanical Technician opportunity based in Colchester, Essex, please contact Jack Kelly - (url removed) / (phone number removed) quoting reference JWK1071
IR35 Status:
Outside IR35

CV-Library Essex, UK Contractor
CL
Apr 23, 2026  
RF Engineer
RF Engineer Contractor | 3 Months | Outside IR35 |Full-time, Onsite | North Cambridge I am currently recruiting for a market leader in the field of critical communications. Their focus is on providing high quality products to a demanding, mission critical client base, which includes the police, paramedics, sea rescue, major airports, large mining facilities and utilities or oil and gas plants located in hazardous environments. We are looking for a couple of RF Engineers to join the team, who have been have been developing comprehensive TETRA and LTE solutions tailored for users across multiple sectors to address their critical communication needs. You will be responsible for: Technical design and specification of RF circuitry for radio terminal products: Complete subsystem design and implementation Integration with Baseband, Audio and MMI subsystems Component specification and sourcing Design test documentation Schematic creation and PCB layout supervision Technical requirements...
IR35 Status:
Outside IR35

CV-Library Cambridge, UK Contractor
CL
Apr 18, 2026  
PSV Technician Cambridge *contractor
Roles - PSV Engineer / PSV Technician / PSV Mechanic / Bus Technician Location: Cambridge Pay Rate: £34.00 per hour Outside IR35 Do one of these roles describe you? Do you feel undervalued your current role? Are you an experienced PSV Mechanic? Are you available to start work right away? Why not come join our team of engineers here at Excel Resourcing, we specialise in supporting several blue-chip clients who operate in the road transport industry. Benefits of working for Excel: * Weekly Pay * Long-term contracting work * Product Training provided * Minimum Hourly Rate of £34.00 These roles involve: * Carrying out routine maintenance and repairs on all makes of PSV * Diagnosing and rectifying all types of PSV faults * Ensuring all vehicles worked upon are handled carefully and that the relevant precautions are taken whilst on the premises. * Liaising with the parts department to attain correct parts. * Ensuring health & safety regulations and safe...
IR35 Status:
Outside IR35

CV-Library Cambridge, Cambridgeshire Contractor
CL
Apr 21, 2026  
Contract Mechanical Design Engineer - Medical
The Redline Group are working EXCLUSIVELY with our Slough-based customer in their search for a Contract Mechanical Design Engineer - Medical on an initial 6 month opportunity, working on a hybrid basis. This role has an indicative OUTSIDE IR35 determination therefore we can accept candidates who would like to operate through their own PSC. A household name in the medical industry, their products are sold around the world and have been for many years. As a result of continued growth, combined with a number of successful project wins, they are seeking a range of professional contractors to help them complete their work on schedule. This is a fantastic opportunity for an experienced engineer to hit the ground running and deliver high quality work. Key Skills Required - Contract Mechanical Design Engineer - Medical, Slough: - Experience using Solidworks - Experience designing Medical Devices - Experience with plastic injection moulding/sheet metal design For more information or...
IR35 Status:
Outside IR35

CV-Library Slough, Berkshire Contractor
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