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Principal Engineer United Kingdom Jobs (On-site work)

46 Job Offers

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CS&A Principal Engineer
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Assystem seeks a CS&A Principal Engineer in Warrington to lead design and site engineering teams on the Box Encapsulation Plant at Sellafield. Requires chartered status (ICE or IStructE), nuclear sector experience, and strong structural design expertise.
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ASSYSTEM
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CS&A Principal Engineer
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Lead CS&A design and site engineering for a major nuclear JV in Warrington. Oversee structural design reviews, TQ/PP submissions and as-built documentation, with regular Sellafield site visits.
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ASSYSTEM
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Principal Geotechnical Engineer
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SOCOTEC UK
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Principal Angular Engineer || AI
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IFS
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Principal Engineer (Angular) || AI
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IFS
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Principal Engineer || AI
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IFS
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Principal Security Design Engineer
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AECOM
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Principal Security Design Engineer
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Location
United Kingdom, Newcastle upon Tyne
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AECOM
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Principal Security Design Engineer
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aecom.com Logo
AECOM
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Principal Security Designer Engineer
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AECOM
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Principal Security Designer Engineer
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Location
United Kingdom, Newcastle upon Tyne
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AECOM
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Principal Security Designer Engineer
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AECOM
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Principal Mechanical Engineer I
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CesiumAstro
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Principal Hardware Engineer I
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CesiumAstro
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Principal Hardware Engineer I
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CesiumAstro
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Principal Embedded Software Engineer I
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CesiumAstro
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Principal Forward Deployed Engineer - UK
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OutSystems
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Principal Telecom Engineer
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McDermott
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Principal Electronics Design Engineer
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Location
United Kingdom, Cheshire
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85000.00 GBP / Year
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Zenovo
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Sr Principal Engineer - Software Quality
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Baxter
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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.