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Principal United Kingdom, London Jobs

187 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 Electrical Engineer
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Principal Electrical Engineer sought by Egis Transport Solutions to lead rail station electrical design in London. You will manage a team, deliver full lifecycle designs, and ensure compliance with Network Rail, HS2, and TfL standards. Requires a degree, chartered status, and expertise in Trimble...
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Egis in the UK
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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 Critical Systems Engineer
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Principal Mechanical Critical Systems Engineer sought for a top-tier data centre consultancy in London. Join a multi-disciplinary team delivering low-carbon HVAC, chilled water, and BMS designs. Ideal for a Chartered engineer with mechanical design experience, ready to lead complex projects for a...
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Cundall
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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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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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Senior CDM Principal Designer
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Senior CDM Principal Designer role with a respected South London consultancy. Lead diverse education, healthcare, and residential projects across London. Requires NEBOSH Construction Certificate, APS membership (CMaPS preferred), and extensive CDM experience. Benefits include 26 days leave, pensi...
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65000.00 - 75000.00 GBP / Year
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Brandon James
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Cdm Principal Designer
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Join a leading London CDM consultancy as a **CDM Principal Designer**, delivering Design Risk Management on commercial, residential, and mixed-use projects. You’ll need a NEBOSH Construction Certificate and APS membership (IMaPS/CMaPS). Enjoy 25 days leave, pension, and clear career progression i...
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50000.00 - 55000.00 GBP / Year
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Brandon James
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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 & 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 BPO/BPaaS Sales Lead
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Principal BPO/BPaaS Sales Lead sought for Agentic AI Customer Service in London. Drive multi-million-dollar deals with Fortune 1000 clients, leveraging 15+ years of experience in transformative outsourcing. Originate C-level relationships and close complex contracts exceeding $20M TCV. Enjoy a co...
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NTT DATA
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Principal Fire Design Engineer
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Principal Fire Design Engineer sought for a London-based consultancy. You will lead fire suppression system design, including sprinklers and water mist, across diverse projects. This role demands expertise in hydraulic calculations, RIBA stages, and British Standards. Join as a key technical expe...
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Morson Talent
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Principal IT/AV Consultant
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Principal IT/AV Consultant sought in London to lead innovative design solutions and technical teams. You’ll manage projects, mentor engineers, and drive stakeholder engagement within a multidisciplinary environment. Ideal candidates are Chartered Engineers with a degree in Electronics or Computer...
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Cundall
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Snr/ Principal Associate - Employment and Pensions
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360 Resourcing Solutions
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Principal AI Platform Engineer
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Vodafone
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Principal GTM Media Strategist
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Appian seeks a Principal GTM Media Strategist in London to build an AI-native creative engine for B2B tech marketing. You will lead content strategy, video production, and digital asset creation using Adobe Creative Cloud and generative AI tools. This senior role requires 10+ years in product mar...
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75000.00 - 175000.00 GBP / Year
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Appian Corporation
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Senior Principal Eica Engineer - Water / Wastewater
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Senior Principal EICA Engineer sought to lead discipline design and technical assurance on complex UK water/wastewater projects. Requires 10–12+ years’ experience, Chartered Engineer status, and deep expertise in the regulated water sector. Based in London with hybrid working, this role offers ac...
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Egis in the UK
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Cdm Principal Designer
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Join a leading Construction Consultancy as a CDM Principal Designer in scenic London. Leverage your 3+ years of CDM experience and NEBOSH Construction qualification to deliver Design Risk Management with minimal site inspections. Enjoy up to £55,000, a car allowance, annual bonus, and exceptional...
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50000.00 - 55000.00 GBP / Year
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Brandon James
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Principal Engineer - Technical Lead (Gen AI and MACH Architecture)
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Principal Engineer - Technical Lead (Gen AI & MACH Architecture) sought by AKQA London. This hands-on role blends 65-70% delivery with 30-35% technical leadership, designing and shipping enterprise-grade systems. You'll lead complex programmes spanning Generative AI, MACH architectures, and cloud...
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AKQA
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Principal Mechanical Critical Systems Engineer
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Location
United Kingdom, Birmingham, London, Manchester, Newcastle, Warsaw, Madrid
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Cundall
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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.