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Principal Engineer United Kingdom Jobs (Hybrid work)

77 Job Offers

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Principal Mechanical Engineer
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United Kingdom , Risley
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Amentum
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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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United Kingdom , Bristol
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Egis in the UK
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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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United Kingdom , Manchester
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Egis in the UK
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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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United Kingdom , London
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Egis in the UK
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Principal EICA Engineer - Water / Wastewater
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Lead Principal EICA Engineer for UK Water/Wastewater projects. Drive sustainable infrastructure design with Egis, a global leader. Requires Chartered status, 8-10+ years experience, and expertise in multidisciplinary treatment solutions. Based in Bristol with hybrid working, accelerated progressi...
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United Kingdom , Bristol
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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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United Kingdom , London
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AKQA
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Principal Fire Engineer
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Principal Fire Engineer sought for a leading specialist consultancy in the North West. You will lead fire strategy and building safety on complex high-rise, residential, and commercial projects across the UK. Ideal candidates have a Fire Engineering degree, extensive consultancy experience, and s...
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United Kingdom
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80000.00 - 95000.00 GBP / Year
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Brandon James
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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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United Kingdom , London
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Egis in the UK
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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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United Kingdom , Manchester
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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 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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United Kingdom , Bristol
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Egis in the UK
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Civil Engineer - Water / Wastewater (Senior / Principal)
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United Kingdom , Bristol
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Egis in the UK
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Mechanical Engineer - Water / Wastewater (Senior / Principal)
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United Kingdom , London
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Egis in the UK
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Civil Engineer - Water / Wastewater (Senior / Principal)
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United Kingdom , Manchester
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Egis in the UK
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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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United Kingdom , Warrington
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Morson Talent
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Principal EC&I Engineer
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United Kingdom , Warrington
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Morson Talent
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Principal Mechanical Engineer
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United Kingdom , Cowes
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51.86 - 70.00 GBP / Hour
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Morson Talent
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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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United Kingdom , Manchester
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75000.00 - 95000.00 GBP / Year
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Brandon James
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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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United Kingdom , Stockport
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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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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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United Kingdom , Manchester
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70000.00 - 90000.00 GBP / Year
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Brandon James
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About the Principal Engineer role

Explore the pinnacle of technical leadership with Principal Engineer jobs. A Principal Engineer is a master-level technical expert and strategic leader within an engineering organization. This is not merely a senior role; it represents the apex of an individual contributor technical track, where influence, architectural vision, and deep expertise converge to shape the technological future of a company. Professionals in these roles are the go-to authorities for the most complex, high-impact challenges, setting technical standards and driving innovation across multiple teams or the entire organization.

The common responsibilities of a Principal Engineer are vast and critical to long-term success. Typically, they involve defining and driving the long-term technical strategy and architectural vision for major platforms or product suites. They are responsible for researching, prototyping, and selecting technologies that will scale to meet future business needs. A core part of their duties includes leading the design and implementation of complex, cross-functional systems, ensuring they are resilient, secure, and efficient. They serve as the ultimate escalation point for critical production issues, conducting deep-dive analysis and root cause investigations to resolve systemic problems. Furthermore, Principal Engineers have a significant mentorship and governance function, actively coaching senior and staff engineers, establishing best practices, and conducting rigorous code and design reviews to maintain exceptional quality across all engineering outputs. They are also key collaborators, working closely with engineering managers, product leaders, and enterprise architects to align technical execution with business objectives.

The typical skills and requirements for these high-level positions are extensive. A bachelor's or master's degree in computer science, engineering, or a related field is common, though equivalent demonstrable experience is often acceptable. Most roles require a minimum of 10+ years of progressive, hands-on software development or infrastructure engineering experience, with a significant portion spent in lead or architecture-focused positions. Essential technical skills include mastery of relevant programming languages and frameworks, profound knowledge of system design patterns and distributed architectures, and expertise in cloud platforms like AWS, Azure, or GCP. They must possess exceptional analytical and problem-solving abilities to deconstruct ambiguous, complex problems. Beyond technical prowess, superior soft skills are non-negotiable; this includes outstanding communication to articulate technical vision to both technical and non-technical stakeholders, proven leadership and influence without formal authority, and strategic business acumen. For those seeking to define technological frontiers and mentor the next generation of experts, Principal Engineer jobs offer a challenging and highly rewarding career path at the forefront of innovation.