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Principal United Kingdom Jobs (Hybrid work)

348 Job Offers

Principal Consultant – Healthcare Operational & Financial Improvement
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Principal Consultant role driving operational and financial improvement across UK healthcare. Lead large-scale NHS transformation, Cost Improvement Programmes, and system-wide change. Requires deep NHS expertise, consulting delivery experience, and accountability for measurable outcomes. Hybrid w...
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PA Consulting
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Principal Technical Program Management Specialist
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Join Microsoft Research in Cambridge, UK as a Principal Technical Program Management Specialist. Drive high-risk, high-reward AI infrastructure programs, translating early-stage research into scalable cloud solutions. You’ll bridge optics, photonics, and AI system design, managing cross-functiona...
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91800.00 - 154700.00 GBP / Year
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Microsoft Corporation
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Associate Principal, Customer Success
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As an Associate Principal of Customer Success in London, you will own strategic relationships with C-suite leaders across high-ARR life sciences accounts. Leveraging 7+ years of B2B SaaS experience, you will drive retention, renewal, and growth within the pharmaceutical and biotech sectors. This ...
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360 Resourcing Solutions
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Principal Mechanical Engineer
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Seeking a Principal Mechanical Engineer for BAE Systems' next-gen Radar Programme. Based in Cowes or Great Baddow, this contract role offers £70/hr (Umbrella, inside IR35). Requires expertise in composite structures, FEA, and mechanical systems design. Lead a small team, provide technical directi...
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51.86 - 70.00 GBP / Hour
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Morson Talent
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Principal EC&I Engineer
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Principal EC&I Engineer sought for Warrington-based nuclear projects. You’ll provide intelligent customer oversight from design to commissioning, ensuring compliance with technical and safety standards. Requires strong PLC/SCADA expertise, NEC3 experience, and a relevant engineering degree. Join ...
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Morson Talent
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Principal Recruitment Consultant
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Principal Recruitment Consultant – Leeds. Drive growth in Capex-led manufacturing recruitment, a high-demand niche with long-term project cycles. We seek a commercially driven 360 recruiter with engineering or technical market experience to build a specialist desk. Enjoy uncapped commission, up t...
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30000.00 - 35000.00 GBP / Year
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Ganymede
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Principal Recruitment Consultant
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Join a high-growth Warehouse Automation & Intralogistics team as a Principal Recruitment Consultant in Leicester. Leverage your 360 contract recruitment expertise to build long-term client relationships and a scalable desk in a project-led engineering sector. Enjoy genuine autonomy, uncapped comm...
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30000.00 - 35000.00 GBP / Year
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Ganymede
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Civil Engineer - Water / Wastewater (Senior / Principal)
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Lead national civil engineering for major UK water/wastewater programmes as a Senior/Principal Engineer in Manchester. Drive AMP8, WINEP, and SRO projects, championing sustainable design and digital workflows (Civil 3D, BIM). You’ll build a high-performing team, shape best practice, and enjoy hyb...
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Egis in the UK
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Mechanical Engineer - Water / Wastewater (Senior / Principal)
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Lead national mechanical engineering for major UK water/wastewater infrastructure as a Senior/Principal Engineer. Drive design excellence across AMP8 programmes, lead multidisciplinary teams, and shape best practice. Based in London with hybrid working, 26+ days leave, and chartership support. Id...
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Egis in the UK
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Civil Engineer - Water / Wastewater (Senior / Principal)
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Lead national civil engineering for major UK water/wastewater programmes as a Senior/Principal Engineer in Bristol. Drive AMP8, WINEP, and SRO projects, leveraging expertise in Civil 3D, hydraulic modelling, and BIM. Chartered (CEng/ICE) with a strong track record in municipal design and CDM lead...
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Egis in the UK
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Principal Solutions Architect
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Principal Solutions Architect sought to design and govern integrated digital project controls environments for major capital programmes in Glasgow. This domain-specialised role requires deep expertise in EPPM platforms (EcoSys, Primavera P6/Unifier, Aconex) and core PMO processes. You will define...
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Amentum
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Lead Principal Designer – High-Rise Residential
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Lead Principal Designer sought for high-rise residential projects in London. This senior role requires RIBA, APS, or CIAT registration and proven experience managing teams through Gateway 2 approvals. Lead a team of 3, ensure Building Regulations compliance, and mentor staff. Hybrid working, exce...
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75000.00 - 90000.00 GBP / Year
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Carriera Limited
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Principal Mechanical Engineer
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Principal Mechanical Engineer sought for Risley, UK, to lead technical design on heavy infrastructure and nuclear projects. You’ll deliver solutions using American codes, CAD (AutoCAD, Inventor), and P&IDs, while engaging with regulators like the ONR. Ideal candidates are Chartered (IMechE) with ...
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Amentum
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Principal Architect
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Enterprise AI Architect role with a leading global asset manager in London. Define the enterprise-wide AI architecture strategy, governance, and standards, not just isolated applications. Requires deep expertise in LLMs, RAG, agentic AI, and AWS cloud, with strong stakeholder influence. Drive AI ...
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Orbis Consultants
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Principal Consultant In Product Lifecycle Management - Aerospace And Defence
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Seeking a Principal Consultant in Product Lifecycle Management (PLM) for our Systems Insights & Solutions team. Leverage 10+ years of Aerospace & Defence expertise to drive PLM transformations, manage client stakeholders, and shape implementation roadmaps. Hybrid role based in Bristol, London, or...
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PA Consulting
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Principal Consultant In Product Lifecycle Management - Aerospace & Defence
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Seeking a Principal Consultant in Product Lifecycle Management (PLM) for Aerospace & Defence in London. Leverage 10+ years of expertise in Siemens solutions, BOM management, and Digital Engineering to deliver transformative projects. Drive client strategy, manage stakeholders, and shape PLM roadm...
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PA Consulting
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Principal Associate – Real Estate
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We are seeking a Principal Associate in Real Estate to join our team across Birmingham, Leeds, Manchester, or Exeter. This role demands excellent commercial awareness, strong interpersonal skills, and the ability to work autonomously. You will thrive in a team-oriented environment, managing compl...
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United Kingdom, Birmingham, Leeds, Manchester, Exeter
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360 Resourcing Solutions
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Principal / Senior Transport Planner
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EDDISONS
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Principal Fire Engineer
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United Kingdom, Gloucester, Newcastle upon Tyne, Risley
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Amentum
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Snr/ Principal Associate - Employment and Pensions
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360 Resourcing Solutions
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About the Principal role

A Principal role represents a senior leadership position found across various industries, from construction and engineering to technology and product management. Individuals in these jobs are trusted with high-level strategic oversight, complex problem-solving, and driving significant organizational impact. Unlike entry-level or mid-career positions, Principal jobs typically require a deep well of specialized expertise, a proven track record of leadership, and the ability to influence direction without direct managerial authority over every team member.

In a professional context, a Principal is often the highest individual contributor or a senior team lead responsible for shaping the vision and execution of critical initiatives. For example, in design and construction sectors, a Principal Designer focuses on risk management from the earliest stages of a project. They ensure that health and safety regulations, such as the CDM Regulations 2015, are integrated into the design process, mitigating hazards before construction begins. This involves leading cross-functional coordination, conducting design reviews, and ensuring a seamless handover to contractors.

In technology and business strategy, Principal Product Managers own the end-to-end lifecycle of complex service portfolios or product lines. They are responsible for defining strategy, developing business cases, and launching innovative offerings that drive customer adoption and revenue growth. These roles demand a data-driven approach to decision-making, strong cross-functional leadership, and the ability to influence executives and stakeholders across engineering, sales, marketing, and customer success teams. Common responsibilities include market analysis, competitive benchmarking, pricing strategy, and building go-to-market plans.

Typical skills required for Principal jobs include exceptional communication and presentation abilities, strategic thinking, and a high degree of autonomy. Candidates usually possess a bachelor’s or master’s degree in a relevant field, combined with significant experience—often eight or more years in a related domain. Technical proficiency is critical, whether in understanding network security, cloud infrastructure, or construction regulations. Soft skills such as negotiation, mentorship, and the ability to drive alignment in matrixed organizations are equally important.

Ultimately, Principal jobs are about leading from the front, solving the most challenging problems, and setting the standard for excellence within an organization. Whether mitigating risk on a construction site or defining the future of a software platform, these professionals are integral to driving meaningful, lasting results.