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Contractor 137
Inside IR35 Marlow

137 jobs found in Marlow

CL
Apr 18, 2026  
Senior Scientist (In Vitro Immunology)
Talentmark are recruiting for a Senior Scientist (In Vitro Immunology) to join a global pharmaceutical company on a contract basis initially for 12 months. Salary: Up to £28.97 per hour PAYE or £39.85 per hour Umbrella (Inside IR35). Senior Scientist (In Vitro Immunology) Role: Design, plan and execute in vitro studies to support target identification, validation and translational pharmacology. Apply strong technical expertise in in vitro immunology models, ensuring appropriate model selection and scientific rigor. Test and validate small molecule and biologics modalities in vitro. Support the development, optimisation and validation of in vitro models, including oversight of CRO studies. Maintain accurate documentation and contribute to reports, study summaries and presentations.Your Background: PhD (or equivalent) in Immunology or a closely related discipline. Proven experience in drug discovery, ideally within immunology or inflammatory disease areas. Strong hands-on...
IR35 Status:
Inside IR35

CV-Library Slough, UK Contractor
CL
Apr 18, 2026  
Scientist (Antibody Formulation Development)
Talentmark are recruiting for a Scientist (Antibody Formulation Development) to join a global pharmaceutical company on a contract basis initially for 12 months. Salary: Up to £22.40 per hour PAYE or £30.81 per hour Umbrella (Inside IR35) Scientist (Antibody Formulation Development) Role: Perform laboratory-based experiments and analytical studies to support non-clinical and clinical development. Support pre-formulation and formulation activities, including lab set-up and technical resource coordination. Develop and optimise injectable formulations for monoclonal antibodies across the development lifecycle. Author formulation protocols, reports, and supporting documentation. Analyse and interpret data relating to biochemical and physical stability of antibody-derived molecules. Collaborate cross-functionally with CMC, development, and other project teams.Your Background: MSc or PhD in Biotechnology, Biochemistry, Biology, or a related discipline. At least 3 years’ laboratory...
IR35 Status:
Inside IR35

CV-Library Slough, UK Contractor
CL
Apr 18, 2026  
Salesforce Solution Architect
Salesforce Solution Architect Location: Warwick or Wokingham - Hybrid – 3 days per week onsite Start Date: ASAP Contract Rate: TBC, likely in the region of £500 per day inside IR35 Duration: 6 months initially Role Overview Our client is seeking a Salesforce Solution Architect to lead end‑to‑end architecture across major enterprise transformation programmes. You’ll define scalable, secure Salesforce solutions, guide technical teams, and act as a trusted advisor to senior stakeholders. Key Responsibilities * Own and define Salesforce architecture across complex, multi‑platform programmes. * Provide hands‑on direction across Apex, LWC, Flows, automation, data architecture, and security. * Enforce architectural standards and review designs for performance, scalability, and resilience. * Lead integrations with ERP, Billing, Middleware (MuleSoft preferred) and data platforms (REST/SOAP, event‑driven, async). * Drive security models, authentication, governance, and...
IR35 Status:
Inside IR35

CV-Library Wokingham, Berkshire Contractor
CL
Apr 23, 2026  
Data Analyst - Aerospace
Principal Data Analyst (SC Cleared - Aerospace/Defence) 📍 Location: Reading (Hybrid - 2-3 days onsite, flexibility available) 🔐 Clearance: SC Cleared (Active) 💼 Contract Type: Inside IR35 💰 Rate: £80 - £83 per hour Overview Are you an experienced SC Cleared Data Analyst with a strong background in aerospace or defence? We are looking for a Principal Data Analyst to join a cutting-edge programme within the Edgewing business, supporting a greenfield site where you'll play a critical role in shaping data capability from the ground up. This is a fast-paced, high-impact environment where your expertise will directly influence how aircraft sensor data is analysed, optimised, and transformed into actionable insight. Key Responsibilities Lead the design and delivery of advanced analytics solutions across a greenfield data environment Analyse and interpret aircraft sensor data to drive performance improvements and operational insights Improve data quality, optimise performance, and...
IR35 Status:
Inside IR35

CV-Library Reading, Berkshire Contractor
CL
Apr 23, 2026  
Commissioning Engineer
Job Title: Commissioning Engineer - EC&I / Electrical Location: AWE Burghfield Site Duration: 12 Month Contract Start: ASAP Working Pattern: Full-time, site-based | 11 shifts on, 3 off (days transitioning to nights) IR35 Status: Inside IR35 Overview We are seeking multiple experienced Commissioning Engineers with a strong Electrical or EC&I bias to support works on the AWE Burghfield site. This role will focus on the safe and compliant commissioning of complex systems within a highly regulated environment, ensuring assets are fully tested, verified, and ready for operational handover. Key Responsibilities Execute commissioning activities across electrical and EC&I systems Develop and review commissioning plans, test documentation, and procedures Perform inspection, testing, and validation of installed systems Fault finding, troubleshooting, and resolution of technical issues Interface with construction, design, and project teams to ensure seamless delivery...
IR35 Status:
Inside IR35

CV-Library Reading, Berkshire Contractor
CL
Apr 22, 2026  
Engineering Manager
Senior Engineering Manager – Facility Design Location: Burghfield (SE of Reading) – Hybrid (2–3 days onsite per week, occasional UK travel) Contract Length: 12 months IR35: Inside Pay Rate: £63.57 per hour (Umbrella) Security Clearance: DV required Role Overview We are seeking a highly experienced Senior Engineering Manager to lead the delivery of integrated facility design solutions. This role ensures that engineering requirements are appropriate, designs are deliverable and licensable, and all allocated work packages meet business, functional, and through-life performance needs. The postholder will maintain design intent and configuration from inception to handover, providing technical leadership and oversight throughout the project lifecycle. Key Responsibilities * Lead as the primary engineering representative on projects, accountable for quality, safety, cost, schedule, and value for money * Ensure engineering requirements are suitable and provide advice to the senior...
IR35 Status:
Inside IR35

CV-Library Reading, Berkshire Contractor
CL
Apr 19, 2026  
Network Project Manager
Network Project Manager (Contract) - SC Cleared/Eligible 📍 Location: Wokingham (3 days onsite) 📅 Contract Length: 6 months (starting ASAP) 💷 Day Rate: Up to £420 per day (Inside IR35) Overview Our client is seeking an experienced Network Project Manager to lead the delivery of complex network migration and transformation projects. This role is ideal for a hands-on project manager with a strong networking background who can take ownership of end-to-end delivery and confidently engage with senior stakeholders, internal teams, and external vendors. As Network Project Manager, you will be responsible for planning, executing, and delivering network projects from initiation through to completion, ensuring high-quality outcomes within agreed timelines, SLAs, and KPIs. Key Responsibilities * Plan, execute, and manage network delivery projects end to end * Own and manage network migration initiatives, understanding risks and challenges * Ensure successful delivery of network...
IR35 Status:
Inside IR35

CV-Library Reading, Berkshire Contractor
CL
Apr 18, 2026  
Engineering Manager - DV
Job Title: Engineering Manager - DV Location: Reading (2-3 days/week on site/Hybrid) Contract Duration: 12 Months Daily Rate: £63.57/hr (Umbrella – Maximum) IR35 Status: Inside IR35 Security Clearance: DV Essential: Leading within a project delivery environment Knowledge of production systems, process partner equipment, Previous design of integration into a new facility. Electrical understanding Multidisciplinary background Ensure that the Engineering Requirements are suitable and appropriate and advise the Senior Engineering Manage as such. Identify options, select the appropriate solution and provide the right facility design solutions such that, for allocated work packages, they: meet business needs and functional performance, through life performance, are licensable and are deliverable. Ensure the Design Intent and Design Information Configuration are maintained from facility design inception through to project handover. Key Accountabilities: Provide the facility design...
IR35 Status:
Inside IR35

CV-Library Reading, UK Contractor
CL
Apr 18, 2026  
Engineering Manager
Engineering Manager 12 Month Contract Location: South East England, Reading Working Pattern: 2-3 days per week onsite (subject to business needs) IR35 Status: Inside IR35 Rate: £63.50 per hour Due to the security restrictions we can only consider people eligible for high level security clearances, this restriction requires UK Citizenship. Overview We are seeking an experienced Senior Engineering Manager to lead the delivery of complex facility design solutions within a highly regulated environment. This role is pivotal in ensuring engineering outputs meet business requirements, regulatory standards, and lifecycle performance expectations. You will act as the primary engineering authority on assigned projects, overseeing multidisciplinary design delivery while ensuring safety, quality, and cost-effectiveness throughout. Key Responsibilities Act as the lead engineering representative on projects, accountable for delivery against quality, safety, cost, and schedule...
IR35 Status:
Inside IR35

CV-Library Reading, Berkshire Contractor
CL
Apr 18, 2026  
PMO (TUPE, Workforce and Consultation experience)
£500 per day 6‑month Contract (Inside IR35) Hybrid - near Reading (2-3 days on site per week) Your new company You will be joining a well‑established organisation based near Reading that is embarking on a significant organisational change programme. The environment is fast‑moving, collaborative and high‑stakes, with a strong focus on people‑centred transformation and clear governance throughout. Your new role This role will see you supporting a large‑scale people change programme involving TUPE transfers, employee consultation activity and workforce transition planning. You will work closely with HR, Programme Leads and senior stakeholders to coordinate governance activity, maintain programme controls and ensure accurate reporting across a sensitive and complex change landscape. Your contribution will help keep delivery on track, surface risks early and ensure the programme operates with clarity, structure and strong stakeholder communication. What you'll need to succeed You...
IR35 Status:
Inside IR35

CV-Library Reading, Berkshire Contractor
CL
Apr 18, 2026  
IMS Core Signalling Designer
Mobile/Voice/Core Signalling Designer Reading - 2 days on-site, 3 days WFH £580 per day Inside IR35 - rate to umbrella Initial 6-month contract, view to extend Overview PCR Digital is working with a leading telecoms organisation who are undertaking a major Voice Core and Subscriber Data Management transformation programme. They are seeking an experienced Mobile Core Signalling Designer with strong Ericsson signalling platform expertise and Nokia SDM experience to support the design and delivery of critical core network evolution initiatives. This is a highly technical design-focused role, requiring hands-on experience producing high-level and low-level design documentation (HLD / LLD) and supporting complex core network migrations, integrations, and service deployments. Key Responsibilities Signalling Architecture & Migration Produce High-Level and Low-Level Design documentation for core signalling platforms Design and support migration of signalling nodes from bare...
IR35 Status:
Inside IR35

CV-Library Reading, Berkshire Contractor
CL
Apr 17, 2026  
Data Analyst - Sc cleared
Data Analyst +Hybrid working in Reading +SC cleared role +Inside IR35 +£83 ph Skills: +Data Analyst +MOD experience +SC cleared Are you an experienced SC cleared Data Analyst ready to lead impactful, data-driven innovation? We're looking for a Principal Data Analyst to drive the design and delivery of advanced analytics solutions that inform strategic decisions and unlock business value. In this role, you'll be at the forefront of our data journey - leading technical initiatives, mentoring colleagues, and influencing how the organisation harnesses data. What You'll Do Lead the design and delivery of complex analytics and insight solutions across multiple projects Oversee dashboarding, reporting, and automation workflows using SQL and cutting-edge tools Define and implement best-practice data governance, security, and compliance standards Collaborate with architects, engineers, and business leaders to shape enterprise data strategy Inspire and guide stakeholders to...
IR35 Status:
Inside IR35

CV-Library Reading, Berkshire Contractor
CL
Apr 17, 2026  
Materials Engineering Lead
This is a great opportunity for a Materials Engineering Technical Lead to join our client's project management team during Pre‑FEED on a multi‑billion‑dollar petrochemical expansion project. The successful candidate will provide Material Engineering leadership and oversee the quality of the contractor's deliverables. This major CAPEX development includes a world‑scale mixed‑feed steam cracker integrated with significant refinery upgrades to increase olefins production, convert fuel oil to higher‑value products, expand utilities, and reduce GHG emissions. Applicants must be Materials Engineering subject matter experts with experience on large-scale petrochemical projects (or similar). The successful candidate will ensure the integrity and performance of materials across project operations, and requires strong expertise in corrosion, metallurgy, welding, non‑metallics, refractories, and material mechanics. The role provides technical guidance to contractors, advising on corrosion...
IR35 Status:
Inside IR35

CV-Library Reading, Berkshire Contractor
CL
Apr 16, 2026  
Civil Engineering Technical Lead
This is an exciting opportunity for a Civil Engineering Technical Lead to join our client's project management team during Pre‑FEED on a multi‑billion dollar petrochemical expansion project. The successful candidate will provide civil and structural technical leadership and oversee the quality of the contractor's deliverables. This major CAPEX development includes a world‑scale mixed‑feed steam cracker integrated with significant refinery upgrades to increase olefins production, convert fuel oil to higher‑value products, expand utilities, and reduce GHG emissions. Applicants must be civil engineering subject matter experts with experience on large‑scale petrochemical projects (or similar). The role includes leading civil input on an extensive modularisation project including the development of a heavy‑haul route, and civil / structural design for onshore and offshore facilities. Responsibilities include guiding contractor design and analysis, supporting weight management,...
IR35 Status:
Inside IR35

CV-Library Reading, Berkshire Contractor
CL
Jan 21, 2026  
HR Business Partner
HR Business Partner (Reading, Hybrid) Certain Advantage are recruiting on behalf of our established International Technology client in Reading for an HR BP on an initial 6 month contract (inside IR35 with option of PAYE via an Umbrella or our PAYE payroll). As an HR Business Partner for the UK business your purpose will be to drive the people strategy through providing strategic advice and support across the employment lifecycle. This is a fantastic opportunity to work with an established global organisation in supporting the UK business, acting as a trusted partner on matters of compliance, development, workforce planning and employee relations. You’ll work in close partnership with Functional HRBPs, the Global HR Answers team and other HR related stakeholders such as TA, Payroll and Comp & Bens; providing detailed advice and problem resolution on complex and sensitive HR policy interpretation and procedural issues. What we need from you Experience & Qualifications...
IR35 Status:
Inside IR35

CV-Library Reading, UK Contractor
CL
Apr 17, 2026  
Apprentice Assessor
MPI have a requirement for an Apprentice Assessor to be based on site at RAF Benson in Oxfordshire. These roles are ongoing, working 37 hours per week for 44.4 weeks per year. (Due to holiday shutdown periods), for which holiday will accrue to cover the shut-down period (if PAYE). Rate of pay: Umbrella £45.13 or Paye £33.00 roles deemed in-scope of IR35 Role information Aircraft Engineering Apprenticeship Flight (AEAF) delivers technical apprenticeships to Aircraft Maintenance Technicians (TG1) and Survival Equipment Technicians (TG13) in the RAF. This role is to support the Royal Air Force apprenticeship provision for level 3 Aeronautical Engineering Apprentices (TG1 & TG13) located at RAF Benson, following graduation from RAF Cosford, phase 2 training. The successful candidates will be responsible to Officer Commanding AEAF for the regular review, assessment, management, and welfare of RAF TG1 & 13 Level 3 aeronautical engineering apprentices up to the completion of their...
IR35 Status:
Inside IR35

CV-Library OX10, Ewelme, Oxfordshire Contractor
CL
Apr 18, 2026  
Quantity Surveyor
Quantity Surveyor | HS2 Rail & Civils Location: West Ruislip / North Ruislip (HS2 Site Office) Rate: £500 - £600 per day (Inside IR35) Working Pattern: Hybrid (3 Days On-Site / 2 Days WFH) Sector: Rail & Heavy Civil Engineering Client: Tier 1 Main Contractor / JV The Opportunity: We are looking for an experienced Quantity Surveyor to join a Tier 1 flagship project on the HS2 central section. Based out of the West Ruislip/North Ruislip hubs, you will be responsible for the commercial management of multi-million-pound work packages spanning major rail infrastructure and heavy civil engineering. This is a long-term contract opportunity offering a market-leading day rate and a flexible hybrid working model, perfect for a commercial professional used to the fast-paced environment of a "mega-project." Key Responsibilities & Duties Working as part of a high-performing commercial team, your duties will include: NEC4 Contract Administration: Manage the day-to-day...
IR35 Status:
Inside IR35

CV-Library Ruislip, London Contractor
CL
Apr 22, 2026  
Section Engineer
Randstad are recruiting for a number of Freelance section engineer roles to work on a prestigious High speed rail project based in Buckinghamshire This role is PAYE, inside IR35. Up to £530 a day. The successful candidate will be working for Tier 1 main Contractors in Joint venture for a number of years. The role includes the build of a Viaduct, cut and cover tunnel, earthworks, piling and a number of structures. Duties will include: Engineers and subcontractor management and / or Self delivery Planning, forecasting and delivering work Liaising with clients and stakeholders Developing programmes, Risk assessments, Quality assurance. Managing design, NCRs, RFI's, H&S etc. Randstad CPE values diversity and promotes equality. No terminology in this advert is intended to discriminate against any of the protected characteristics that fall under the Equality Act 2010. We encourage and welcome applications from all sections of society and are more than happy to discuss...
IR35 Status:
Inside IR35

CV-Library Aylesbury, Buckinghamshire Contractor
CL
Apr 23, 2026  
Software Engineer D
Software Engineer Watford - hybrid 6 month contract Inside ir35 Group expectations: Meets customer needs related to simple products and services while following standardised protocols. Develops personal capabilities using formal and informal training opportunities, while also coaching others as required. Identifies shortcomings in existing processes, systems and procedures, then uses established change management programmes to deliver prescribed outcomes and/or provide support services. Reviews non-compliance issues within current IT Security processes, systems and procedures, and works with guidance to ensure solution of ad hoc problems within the assigned unit and/or discipline. Helps others use and benefit from the existing knowledge management systems. Analyses customer needs and defines and delivers prescribed products by performing designated development/engineering activities using established systems. Keeps track of risk parameters and identifies and reports any major...
IR35 Status:
Inside IR35

CV-Library Watford, Hertfordshire Contractor
CL
Apr 22, 2026  
Supply Chain Specialist (Aviation MRO)
Line Up Aviation is a specialist aviation and aerospace recruitment company that has been operating worldwide for more than 35 years. We work with some of the industry's best-known companies who demand the highest standard of service. On behalf of our global client working in the aviation industry, we are currently seeking interest in the role detailed below. To be successful in your application you will need to hold UK working rights at the time of application, as well as a valid UK passport. Role: Supply Chain Specialist (Aviation MRO) Location: London Heathrow Airport Shift Pattern: Mon-Fri IR35 Status: Inside Hourly Rate: tba Contract Position 12 Months (extension/perm possible) Our client has an opportunity for an experienced Supply Chain specialist to join them on a contract basis. This is a unique opportunity to join an established Aircraft OEM providing class leading MRO support. The ideal candidate will have a background in aviation, aerospace engineering and...
IR35 Status:
Inside IR35

CV-Library Hounslow, London Contractor
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