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Principal United Kingdom, London Jobs (Hybrid work)

118 Job Offers

Principal Data Analyst
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95000.00 - 105000.00 GBP / Year
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Data Idols
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Principal Design Director
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Join a multidisciplinary consultancy as a Principal Design Director in London. This board-level role requires RIBA, CIAT, or Class 3 RBI registration with 15+ years in architecture or building control. Lead a close-knit team, manage Building Regulations and CDM risks, and drive client relationshi...
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110000.00 - 130000.00 GBP / Year
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Brandon James
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Principal Product Manager - Payments
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Principal Product Manager - Payments role in London, UK. Lead B2B card programs and payment rails at Medius, a global spend management leader. Requires 7+ years in SaaS/fintech with deep expertise in virtual/commercial cards and US/UK/EU payment systems. Drive innovation in AP automation with com...
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Medius
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Principal QHSES Assurance Specialist
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Seeking a Principal QHSES Assurance Specialist in London to lead risk-based assurance programs for major Oil & Gas EPC projects. This senior role demands 12-15 years’ experience, ISO 9001/14001/45001 Lead Auditor certification, and deep knowledge of IOGP OMS. You will provide independent opinions...
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McDermott
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Principal Delivery Manager
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Principal Delivery Manager sought to lead complex public sector engagements across the UK. You will drive digital transformation, build trusted advisor relationships, and coach high-performing teams. Requires deep public sector experience, bid leadership, and a user-centric approach. Benefits inc...
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United Kingdom, Any UK Office Hub (Bristol / London / Manchester / Swansea)
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80000.00 - 100000.00 GBP / Year
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Made Tech
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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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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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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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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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Snr/ Principal Associate - Employment and Pensions
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360 Resourcing Solutions
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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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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 Client Partner
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Tripadvisor
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Civil Engineer - Water / Wastewater (Senior / Principal)
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Lead national water and wastewater infrastructure projects as a Senior/Principal Civil Engineer at Egis in London. Drive major UK programmes like AMP8, leveraging your CEng status and expertise in Civil 3D and hydraulic modelling. This senior role offers hybrid working, accelerated career progres...
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Egis in the UK
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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 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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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 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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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.