173 jobs found in Welwyn Garden City

Senior Preconstruction Project Engineer – Infrastructure Projects Location: Hertfordshire Rate: £450 - £500 per day (Outside IR35 considered) Duration: 12 months Start: ASAP A major infrastructure contractor is seeking a Senior Preconstruction Project Engineer to support the development and mobilisation of complex water and wastewater projects. This role focuses on the critical pre-construction and design phases of project delivery, ensuring schemes are properly planned, technically coordinated and commercially positioned before construction begins. The successful candidate will work closely with pre-construction teams, designers, planners and procurement specialists to develop robust target costs, risk registers and delivery strategies while ensuring design solutions are aligned with programme and buildability requirements. The Senior Preconstruction Project Engineer will play a key role in coordinating operational input during the early stages of project development....

Preconstruction Project Engineer Location: Hertfordshire Rate: £350 - £400 (Outside IR35 considered) Duration: 12 months Start: ASAP We are seeking a Preconstruction Project Engineer to support the development and mobilisation of water and wastewater infrastructure projects within a large capital delivery programme. This role sits within the pre-construction and engineering team and focuses on ensuring projects are technically coordinated and properly planned before construction begins. The successful candidate will contribute to the early stages of project development by supporting the preparation of target costs, risk registers and delivery strategies, ensuring projects are set up for successful execution once they progress to site. Working closely with design partners, procurement teams and operational delivery teams, you will review engineering deliverables to ensure they comply with contractual, regulatory and technical requirements. You will help coordinate the...

Design Coordinator – Infrastructure Projects Location: Hertfordshire Rate: £300 - £380 (Outside IR35 considered) Duration: 12 months Start: ASAP We are seeking an experienced Design Coordinator to support the delivery of civil and MEICA projects within a large capital programme. This role sits within the engineering and design management team and focuses on ensuring projects are technically coordinated and fully developed prior to construction. The successful candidate will play an important role during the pre-construction and detailed design phases, helping to ensure design deliverables, procurement requirements and delivery planning are aligned before work begins on site. Working closely with design partners, procurement teams and project delivery teams, you will review design outputs to ensure they comply with contractual, regulatory and technical requirements. You will also support the development of robust delivery plans by coordinating surveys, testing and inspections...

Design Manager – Infrastructure Projects Location: Hertfordshire Rate: £350 - £450 per day (Outside IR35 considered) Duration: 12 months Start: ASAP We are seeking an experienced Design Manager to support the delivery of major civil engineering and MEICA infrastructure projects. This contract sits at the critical interface between pre-construction, design, procurement and project delivery. The successful candidate will play a key role in ensuring projects are fully developed from a design, procurement and delivery perspective before construction begins on site. The focus of the role is to ensure that target costs, risk registers and delivery plans are robust during the early phases of a project, while also ensuring design development supports programme certainty and commercial performance. Working closely with pre-construction teams, designers, planners, procurement specialists and operational delivery teams, you will coordinate Civil and MEICA design development across...

Temporary Works Coordinator - Outside IR35 Contract (6 Months, ASAP Start) Locations: Hitchin / Peterborough / Colchester Contract Type: Outside IR35 Duration: 6‑month contract Start Date: As soon as possible Role Purpose You will be responsible for the effective day‑to‑day management of site activities to ensure successful delivery of key project elements. This includes planning, coordination, resourcing, and maintaining strong communication with site teams. You will ensure all works are delivered safely, on time, within budget, and in line with all relevant standards, specifications, and regulatory requirements. Key Responsibilities Support short‑ and long‑term work planning, using production‑led techniques and planning tools to optimise onsite delivery. Manage and coordinate on‑site supervisors, engineers, operatives, and subcontractors. Oversee all Health, Safety, Environmental and wellbeing requirements, including producing and delivering RAMS, SSOW, permits, site...

Interim Health and Safety Consultant - £400 - £450 per day (Outside IR35) - North West London * Are you looking for a role where you can help shape safety culture across a major London transport operation? * Do you enjoy working closely with operational teams to drive improvements in health, safety, environment and quality? * Are you motivated by the opportunity to influence change at the beginning of a transformational journey? If so, look no further… * An exciting opportunity has arisen for an Interim Health and Safety Consultant to join a leading London transport operator, supporting the development of health, safety, environmental and quality arrangements across its operations. * Reporting to the Head of Health and Safety, this is a highly operational role where you will work closely with garage teams, project stakeholders and senior leaders to drive continuous improvement, ensure legal compliance and strengthen safety culture across multiple...

MPI have a requirement for Aircraft Fitters to work on site in at Stansted Airport. Our client requires 4 Aircraft Fitters per day from the 12th January 2026 through to the 18th December 2026 (as with all contracts, this may be subject to change) In addition, they require a further 4 Aircraft Fitters to work opposite shifts to cover the whole roster. The Working hours are 07.00 - 19.00 Working the following shift pattern 5 on 5 off 4 on 5 off 5 on 4 off Then this cycle repeats itself from top. 5 on 5 off 4 on 5 off 5 on 4 off Rate of pay is £29.00 per hour limited. Our client has advised that as well as the shifts above, there are extra hours available each week (Overtime is not guaranteed). This contract is deemed outside of IR35 You will require your own tools as well as current Human Factors, EWIS and Fuel Tank Safety certificates. The successful candidate will be a self-motivated individual with experience working in a Base Maintenance environment Required Qualifications &...

Are you looking for work within the Building Surveying industry? Look no further! 1st Select are looking for an experienced Stock Condition Surveyor / Domestic Energy Assessor who would be able to carry out detailed inspections of houses and flats, both internally as well as externally. Our client is a leading Consultancy in the Surveying industry, that has won a large contract covering Hackney and we are looking for 2 Stock Condition Surveyors/DEAs to partake in this program. Responsibilities/requirements will include… Stock Condition Surveying Experience Experience with lodging EPCs HHSRS Experience Benefits for the worker Gain more experience in the building surveying industry Flexible working hours *Payment outside of IR35* This will be a 3-month contract with the possibility of leading on to additional work. If this fits your area of expertise, please contact Lucy Saphier

Freelance Quantity Surveyor - On site Central London (Near Old Street) - Immediate start - 8+ months contract - Outside IR35. Tradeline are actively seeking a Quantity Surveyor who is able to complete an 8 month contract based on site near Old Street, Central London. You will be required to carry out a forensic review of the project costings and deliver excellent commercial skills including CVR's and Final Accounts. Reporting into a Commercial Manager and working within a team of 5, you will be involved in delivering an extensive cost management service on the project. The role would suit an experienced Quantity Surveyor who has had experience in build projects, excellent negotiation skills and working within a high pressurised environment. There will also be aspects of troubleshooting, so experience dealing with problematic construction projects would be desirable

IT Integration Delivery Lead (Contract) We are looking for an experienced and forward-thinking IT Integration Delivery Lead to support a major programme of work. This role requires someone who can work across multiple technical and operational teams, ensuring delivery plans are aligned, risks are understood, and integration activities progress smoothly. It is a hands-on role involving coordination, planning, and direct project work where needed. Key Responsibilities: * Work closely with senior IT leaders to develop a unified delivery plan. This includes both technical implementations and operational changes. * Partner with project managers and business stakeholders to define the overall schedule, scope, and interdependencies across the full IT integration programme. * Consolidate reporting across the delivery portfolio, supporting the Digital PMO with updates on progress, risks, issues, key milestones, resourcing pressures, and budget alignment. * Assist in change management...

Our client, an international consumer business based in London, is seeking an Interim Finance Operations Director to join the organisation on a 6-month ongoing contract. This role will sit at the centre of the operational leadership team, acting as the key link between Finance, the CFO, and senior leaders across Supply Chain and Logistics. The position will play a critical role in ensuring that operational decision-making across the supply chain, logistics and cost base is supported by strong financial insight, planning and performance management. Location: London (2-3 days p/w onsite) Contract length: 6 months ongoing Candidate Rate: £800-£1,00 per day (outside IR35) Start Date: April/May Key Responsibilities of the Interim Finance Operations Director Lead the operations finance agenda across the business, covering cost of goods, logistics and the broader operational cost base. Act as the key finance partner to the Director of Supply Chain and Director of Logistics,...

Structural Technician - Contract London £250.00 Per Day (outside IR35) We are working with an established company based in London who have an urgent contract requirement for a Structural CAD Technician. This will be a long-term contract tole and no Revit experience is needed, just good AutoCAD. The role would suit candidates who have experience working on data centres, although training is on offer. You will need the ability to work collaboratively within a fast-paced environment. You will be required to work full time 5 days in the office. Want to learn more? Send your CV to Graham Ventham at Conrad Consulting who will reach out to successful applicants

Great opportunity to work with this leading international Consulting Engineers who are looking to bring on board a driven and experienced Senior Electrical Design Engineer, Outside IR35, to be an active part of a specialist design team consultancy to work on a variety of Data Centre projects. Key Responsibilities:- Create electrical design drawings and specs for Data Centre Projects. Ensure designs meet all standards and regulations. Support sustainable design and use of innovative tech Work closely with colleagues, clients, architects, and contractors.. Manage project deadlines, budgets, and deliverables. About you: You should hold Degree (or historic equivalent) in Electrical Engineering or related field.- Should have extensive experience in Mission Critical design and building services design, specifically on data centres.- Skilled in Amtech, and Dialux/Relux, with AutoCAD and Revit proficiency being beneficial. Sound knowledge of British Standards and building...

We are working with a well-established water and infrastructure consultancy looking to strengthen their team with an experienced Flood Modeller.   This is an excellent opportunity to take ownership of complex flood risk and hydraulic modelling projects while working alongside a highly experienced technical team. You will play a key role in delivering sustainable development solutions across a range of UK infrastructure and development schemes.   This is a 6 month initial contract role that falls OUTSIDE IR35. Out client is based in London and open to remote workers.   Key responsibilities   ·Deliver hydraulic modelling and flood risk projects from concept through to construction ·Build, run and interpret river and surface water models using Flood Modeller, TUFLOW and InfoWorks ICM ·Produce and review Flood Risk Assessments and Drainage Strategies ·Develop concept and detailed designs for flood protection and surface water management schemes ·Provide technical advice to...

I have a requirement for an experienced Freelance Senior Planner to join the team on a Data Centre project in NW London, working directly for the main contractor on site. This is a long-term contract role operating Outside IR35, with the expectation of 5 days per week on site. The role will focus on developing, managing and improving the construction programme while working closely with both the delivery and commercial teams to ensure the project schedule accurately reflects progress and supports effective project control. The successful candidate will have strong experience using Primavera P6, with the ability to build and maintain detailed, accurate programmes and drive improvements to existing schedules. Experience on data centre or mission-critical projects would be highly advantageous. This opportunity would suit a planner who is confident working collaboratively with site and commercial teams, translating complex construction activities into clear, realistic programmes...

Business Analyst / BI / Reporting / Supply Chain £(Apply online only) per day (Outside IR35) London / Hybrid Business Analyst / BI / Reporting / Supply Chain This is an opportunity for you to join a rapidly growing ecommerce business who are looking for a Business Analyst to join their business to gather requirements for a new reporting solution across their retail estate. You'll be responsible for gathering requirements and mapping the business logic for a new reporting solution and designing the visualisations for the data team to build. Ideally you'll have: Strong Business Analysis experience working in supply chain within retail or FMCG. Business Intelligence / Reporting experience. Exceptional stakeholder management experience. If you're interested in the role please apply to be considered. London / Hybrid £(Apply online only) per day (Outside IR35) Business Analyst / BI / Reporting / Supply Chain

Senior Data Engineer / GCP / Looker / Big Query £(Apply online only) per day (Outside IR35) London / Hybrid Senior Data Engineer / GCP / Looker / Big Query This is an opportunity for you to join a rapidly growing ecommerce business who are looking for a Senior Data Engineer to build and maintain data pipelines for a new reporting solution within the business. You'll be responsible for the build across ingestion, modelling and creating semantic layers using their GCP stack. Successful applicants will have experience with: Looker BigQuery GCP Gemini Exceptional candidates would have worked with: Retail Data If you're interested in the role please apply to be considered. London / Hybrid £(Apply online only) per day (Outside IR35) Senior Data Engineer / GCP / Looker / Big Query

Application Packager – 2-month contract – Outside of IR35 – London/Remote My Customer is currently looking for an experienced Application Packager to support a Windows OS migration across Point of Sale (POS) devices used within restaurant environments. This role will play a key part in ensuring that applications are successfully prepared, tested and deployed as part of a large-scale rollout. The focus of the role will be to simplify and streamline the current rollout process used by Field Engineers, reducing the length and complexity of the existing documentation to help avoid issues during the update and migration of applications on POS devices. Key Skills & Experience from the Application Packager: Strong experience in manual application packaging within Windows environments. Experience supporting Windows OS migrations or large-scale application deployment programmes. Excellent knowledge of Command Line, Batch scripting, and Command Logic. Ability to reverse engineer...

Job Title: HVDC Engineer Contract Type: Contract (Outside IR35) Duration: 12 Months Start Date: ASAP Location: Remote (UK / Europe considered) Overview We are currently seeking an experienced HVDC Engineer to support the design and engineering activities on a major power transmission project. This is a 12-month contract role, working outside IR35, with a remote working setup. The successful candidate will support engineering teams across HVDC system design, ensuring technical deliverables are produced to a high standard and aligned with project specifications. Key Responsibilities * Support the design and engineering activities associated with HVDC transmission systems. * Review and contribute to technical documentation, design packages, and engineering studies. * Collaborate with multidisciplinary engineering teams across electrical, control, and system design. * Provide technical input into HVDC system architecture, equipment specifications, and...

Regulatory CMC Technical Writer Fully Remote (UK/Europe) | Freelance Contract – Outside IR35 | Occasional International Travel About the Role We are seeking an experienced Regulatory CMC Technical Writer to support our client’s global regulatory and pharmaceutical development programmes. This is a fully remote, freelance position operating outside IR35, offering flexibility, autonomy, and the opportunity to collaborate with international teams across the life sciences sector. The ideal candidate will bring proven expertise in CMC documentation, regulatory submissions, and technical writing within pharmaceuticals, biologics, or advanced therapies. Key Responsibilities * Prepare, write, and review high‑quality CMC documentation for global regulatory submissions (e.g., Module 3, IMPD, IND, BLA, CTA). * Translate complex scientific, manufacturing, and quality information into clear, compliant regulatory content. * Ensure all documentation aligns with FDA, EMA, MHRA and...