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Senior Principal Engineer United Kingdom Jobs

42 Job Offers

Senior Principal Mechanical Engineer - Water / Wastewater
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Senior Principal EICA Engineer - Water / Wastewater
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Senior Principal EICA Engineer - Water / Wastewater
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Senior Principal Mechanical Engineer - Water / Wastewater
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Senior Principal EICA Engineer - Water / Wastewater
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Senior Principal Process Engineer - Water / Wastewater
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Senior Principal Process Engineer - Water / Wastewater
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Senior Principal Process Engineer - Water / Wastewater
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Senior Principal Construction Support Engineer
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Principal / Senior Nuclear Safety Engineer
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United Kingdom, Greater London, Bristol or Gt Yarmouth
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Senior Principal Mechanical Engineer
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Senior Principal Mechanical Engineer sought by Assystem to lead cutting-edge fusion and modular nuclear projects in Bolton, UK. You will drive design of critical systems like airlocks and penetrations, leveraging expertise in steam cycle modelling, cooling water equipment, and regulatory complian...
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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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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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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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Senior Principal Eica Engineer - Water / Wastewater
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Senior Principal EICA Engineer sought to lead discipline design on major UK water/wastewater programmes in Bristol. You will provide technical authority, mentor teams, and drive sustainable treatment solutions. Requires 10–12+ years’ UK water sector experience, Chartered status, and proven multid...
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Senior Principal Eica Engineer - Water / Wastewater
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Senior Principal EICA Engineer sought to lead discipline design on major UK water/wastewater programmes. This senior role demands 10–12+ years’ experience, Chartered status, and deep technical expertise in the regulated water sector. Based in Manchester, you will drive multidisciplinary coordinat...
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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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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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Mechanical Engineer - Water / Wastewater (Senior / Principal)
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Senior/Principal Mechanical Engineer sought for Egis’s expanding UK Water team in Manchester. Lead municipal water/wastewater treatment design across AMP8 and major programmes. Requires CEng, IMechE membership, and deep UK regulated water market expertise. Benefit from accelerated career progress...
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Mechanical Engineer - Water / Wastewater (Senior / Principal)
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Lead national mechanical engineering for major UK water/wastewater infrastructure programmes. As Senior/Principal Engineer, you will shape design strategy, guide multidisciplinary teams, and drive best practice. Requires CEng, deep UK regulated water market experience, and treatment design expert...
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About the Senior Principal Engineer role

Explore the pinnacle of technical leadership with Senior Principal Engineer jobs. This elite role represents the highest echelon of individual contributor engineering, where professionals transcend typical technical duties to become strategic visionaries and organizational authorities. A Senior Principal Engineer is not merely a senior developer; they are the cornerstone of architectural direction, innovation, and technical excellence for entire business units or the company at large. Individuals in these roles possess a rare blend of deep technical mastery, profound business acumen, and influential leadership, shaping the technological future of their organizations.

Professionals in these senior principal engineer jobs are primarily responsible for defining and evangelizing organization-wide architectures and long-term technology roadmaps. They evaluate and integrate emerging technologies, making critical decisions that align complex technical strategies with overarching business goals. A core aspect of their work involves solving the most ambiguous, large-scale, and high-impact problems, often creating novel solutions that become foundational for future products. They establish engineering standards, methodologies, and best practices, ensuring consistency, quality, and scalability across multiple teams and platforms. Furthermore, they act as internal consultants and ultimate technical authorities, sought out to resolve deep architectural challenges and de-risk major initiatives.

Beyond design, Senior Principal Engineers are hands-on leaders in innovation, frequently contributing to patents, whitepapers, and industry standards. They possess a proven history of deploying transformative solutions at scale. Mentorship is a key responsibility, as they are expected to elevate the entire engineering organization by guiding and inspiring senior engineers and architects, setting a gold standard for technical excellence. Their role demands constant collaboration with executive business leadership, product management, and sometimes external partners, requiring them to translate complex technical concepts into strategic business value.

Typical requirements for these high-caliber positions include 12+ years of progressive experience, often with a advanced degree in Computer Science or a related field. Essential skills encompass mastery in system architecture (including cloud, microservices, and distributed computing), a security-first mindset, and full-stack development fundamentals. However, the distinguishing competencies are strategic thinking, exceptional communication and influence, and a relentless drive for innovation. Success in senior principal engineer jobs hinges on the ability to navigate technical complexity while driving tangible business outcomes, making these roles critical for any organization aiming to maintain a competitive technological edge. If you are an engineer who defines the art of the possible, these positions represent the ultimate career destination.