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Principal United Kingdom Jobs (Hybrid work)

348 Job Offers

Principal Fire Safety Consultant
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Principal Fire Safety Consultant sought in Leicester to lead fire strategy development for high-rise commercial and large-scale projects. You’ll manage complex developments, produce fire strategies, and conduct Fire Risk Assessments (FRAs) while building strong client relationships. Requires exte...
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65000.00 - 75000.00 GBP / Year
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Brandon James
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Principal Safety Case Engineer
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Principal Safety Case Engineer role in Warrington, UK. Lead nuclear safety projects, developing hazard management strategies and safety case reports. Requires a degree in engineering, Chartered status (or working towards), and broad safety case experience. Join a growing team, mentor engineers, a...
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Morson Talent
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Principal IT Pillar Specialist
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Principal IT Pillar Specialist and AVEVA E3D Administrator sought for a key role in Chiswick, London. Leverage 10+ years of expertise in PML and .NET to configure, customize, and automate complex engineering systems. Drive best practices and lead projects independently within a global IT framewor...
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McDermott
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Principal Fire Engineer
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Principal Fire Engineer sought by a leading consultancy in Manchester. Lead complex projects across residential, commercial, and healthcare sectors, delivering innovative fire strategies. Requires extensive consultancy experience, UK Building Regulations knowledge, and chartered status. Benefits ...
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75000.00 - 95000.00 GBP / Year
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Brandon James
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Principal Pricing Analyst
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Principal Pricing Analyst role with a leading personal lines insurer in Surrey. You will lead complex pricing projects, enhance technical models using Radar, and drive optimisation initiatives. This high-impact position requires strong general insurance pricing experience and a proven ability to ...
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Location
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68000.00 - 72000.00 GBP / Year
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Eames Consulting
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Principal Highways Engineer
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Principal Highways Engineer role in Stockport, UK. Seeking a Chartered or near-Chartered civil engineer with strong highways design experience using UK standards (DMRB, MCHW, NEC). Lead detailed design, mentor junior engineers, and coordinate multi-disciplinary delivery from concept to constructi...
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Morson Talent
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Principal Engineer Systems Engineering Architecture
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Principal Systems Engineer sought for a leading defence client in Barrow-in-Furness, UK, to drive complex submarine projects. This role demands deep expertise in systems engineering architecture, technical leadership, and design authority for sub-systems. You will produce design specifications, l...
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United Kingdom, Barrow-in-Furness
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58.00 - 78.33 GBP / Hour
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Morson Talent
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Senior Building Regulation Principal Designer
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Senior Building Regulation Principal Designer role in Maidstone with a leading multi-disciplinary consultancy. Lead compliance on complex new build projects across Leisure, Universities, and Residential (HRBs). Requires 7+ years in Architectural, Design, or Building Control, plus ARB/RIBA members...
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65000.00 - 75000.00 GBP / Year
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Brandon James
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Principal Ecological Consultant
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Principal Ecological Consultant role in Manchester, UK. Lead a regional ecology team, delivering high-quality services for infrastructure and development projects. Provide strategic advice on balancing project delivery with environmental protection, ensuring compliance with wildlife legislation. ...
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Pavers
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Principal Fire Engineer
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Principal Fire Engineer sought by a leading fire safety consultancy in Manchester. This senior role involves leading complex fire engineering projects across residential, commercial, and high-rise buildings. You will produce fire strategies, ensure compliance with Approved Document B, and mentor ...
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70000.00 - 90000.00 GBP / Year
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Brandon James
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Principal Consultant in Product Lifecycle Management - Aerospace & Defence
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Principal Consultant in PLM for Aerospace & Defence. Lead digital engineering transformations across the product lifecycle. Requires 10+ years’ PLM expertise, deep BOM/change management skills, and consulting experience. Based in Manchester, Bristol, or London with benefits including private heal...
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United Kingdom, Manchester, Bristol, London
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PA Consulting
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Principal Civil Design Engineer
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Principal Civil Design Engineer sought for a Derby-based role with hybrid working. You will lead water and sewage treatment plant designs, ensuring cost-effective, compliant solutions. Requires 10+ years’ experience, Chartered status (ICE/IStructE), and strong team management skills. Benefits inc...
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70000.00 - 80000.00 GBP / Year
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Morson Talent
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Azure Principal Platform Engineer
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As an Azure Principal Platform Engineer, you will architect and build a greenfield, multi-tenant AKS platform for a major fintech. This role requires deep expertise in Kubernetes platform engineering, security (CAF/ALZ), and FinOps. You will establish the platform operating model and mentor the i...
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United Kingdom, Greater London, England, Spain
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Parser Limited
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Principal Embedded Software Engineer
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Principal Embedded Software Engineer sought in Bristol, UK. Lead and mentor engineering teams in safety-critical embedded development using C, Assembler, and RTOS. Oversee the full software lifecycle, manage projects, and drive innovation. Enjoy a collaborative environment with a bonus.
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80000.00 GBP / Year
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Zenovo
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Principal Machine Learning Scientist
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Lead ML strategy as Principal Machine Learning Scientist in London, driving Tripadvisor’s core discovery engine. You’ll architect large-scale ranking & recommendation systems, leveraging deep multi-task learning and sequential modeling. Ideal for experts with 8+ years in production ML, a PhD/MSc,...
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Tripadvisor
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Principal Structural Engineer
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Principal Structural Engineer sought for a UK-based role with a global sustainable design consultancy. Lead complex projects across industrial, tech, and defence sectors, including data centres and gigafactories. Requires Chartered status (IStructE/ICE), SC clearance eligibility, and expertise in...
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500.00 - 600.00 GBP / Day
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Morson Talent
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Senior / Principal Civil Water Engineer
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Senior / Principal Civil Water Engineer sought to lead multi-disciplinary teams on landmark UK water infrastructure projects in Bristol. You will drive technical design for hydraulics, wastewater, and clean water systems, mentoring junior engineers. Enjoy flexible hybrid working, a competitive sa...
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Morson Talent
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Principal Consultant in Product Lifecycle Management - Aerospace & Defence
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Principal Consultant in PLM for Aerospace & Defence, driving digital engineering transformation across Bristol, London, or Manchester. Leverage 10+ years of PLM expertise, including Siemens solutions, to lead BOM management, change/config, and CAD/CAE integration. Shape business cases and roadmap...
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Location
United Kingdom, Bristol, London, Manchester
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Not provided
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PA Consulting
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Principal Engineer - CPTO, BPL
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Principal Engineer role in CPTO, BPL, shaping scalable distributed services for critical business operations. Requires deep JVM expertise (Kotlin, Java), cloud-native mindset (AWS, Azure, GCP), and fintech/payments experience. Based in London or Northampton, UK, with benefits including private me...
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Location
United Kingdom, London, Northampton
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Not provided
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Barclays
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Principal Safety Engineer
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Principal Safety Engineer sought for Bolt’s Autonomous Driving team in London. You will lead safety cases for Level 4 systems, mastering ISO 26262, SOTIF, and cybersecurity standards. Requires 10+ years in safety-critical engineering and deep knowledge of autonomous architecture. Enjoy a hybrid r...
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Bolt
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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.