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Principal Engineer United Kingdom Jobs

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Principal Electrical Engineer
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Lead electrical engineering for a global low-carbon energy leader at our Capenhurst site. You will manage a team delivering complex design solutions for major projects, ensuring safety and regulatory compliance. This role requires a Chartered Engineer with 10+ years' experience in regulated indus...
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United Kingdom , Capenhurst
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83175.00 - 92416.00 GBP / Year
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Morson Talent
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Senior/ Principal Civil Design Engineer
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Seeking a Senior/Principal Civil Design Engineer for a hybrid role across multiple UK offices. You will deliver high-quality engineering design for water and sewage treatment projects, ensuring cost-effective and safe solutions. The role requires a relevant HND/degree and extensive civil engineer...
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United Kingdom , Derby; Rickmansworth; Bristol; Falmer; Coleshill; Peterborough
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Not provided
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Morson Talent
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Principal Engineer - Mechanical Design
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Lead mechanical design for water treatment projects as a Principal Engineer in Derby. This hybrid role requires chartered status, line management experience, and expertise in cost-effective plant layout. Enjoy a competitive package including car allowance, private health insurance, and a flexible...
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United Kingdom , Derby
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Not provided
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MWHTreatment
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Principal Engineer - Combat Systems (External Communications)
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Lead maritime external communications systems engineering on the critical Dreadnought Submarine Programme. Apply your deep domain expertise across the full engineering lifecycle, from design to sea-going trials. This role offers a high-integrity environment in Frimley, valuing diversity and profe...
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United Kingdom , Frimley, Surrey
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57.00 GBP / Hour
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Outsource UK
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Principal Nuclear Facility Safety Engineering Consultant
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Lead nuclear safety case development for major civil and defence projects in Teddington. This senior role requires proven expertise in nuclear facility safety assessments, licensing conditions, and team leadership. Enjoy extensive benefits including private medical cover, enhanced pension, and a ...
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United Kingdom , Teddington
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Not provided
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BMT
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Principal GCP Engineer
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Lead high-level architectural discussions and own the DevSecOps process as a Principal GCP Engineer in London. Design ingenious GCP solutions, leveraging expertise in Kubernetes, BigQuery, and Vertex AI, while mentoring teams and engaging directly with clients. Enjoy private healthcare, generous ...
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United Kingdom , London
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PA Consulting
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Senior Principal Software Engineer
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Lead architectural development for cybersecurity products as a Senior Principal Software Engineer at Rapid7 in Belfast. This role requires 12+ years of Java experience and expertise in designing complex, scalable enterprise software. You will drive technical strategy, foster innovation, and champ...
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United Kingdom , Belfast
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Not provided
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Rapid7
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Principal ML & AI Engineer
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Lead the delivery of cutting-edge AI and ML solutions for top-tier enterprise clients. This hands-on role requires deep expertise in Python, LLMs, and production deployment. Leverage your consulting experience to design and implement GenAI systems from concept to live operation. Join a specialist...
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United Kingdom
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Dynamic Search Solutions
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Principal Solutions Engineer
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Join Wiz, the fastest-growing cloud security startup, as a Principal Solutions Engineer in the UK. Leverage your deep expertise in cloud architecture (AWS/Azure/GCP), AppSec (ASPM, SAST, SCA), and Kubernetes to be the top field expert. You will collaborate with sales on strategic opportunities, g...
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United Kingdom
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Wiz
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Senior or Principal Control Systems Engineer
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Lead the development of advanced flight control laws and precision pointing algorithms for UAS platforms in Bristol. This senior role requires deep expertise in modern control theory and servo-loop tuning for gimbals. You will architect robust control strategies, transitioning models to flight-re...
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United Kingdom , Bristol
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Tekever
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Principal Mechanical Engineer
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Lead the design and analysis of critical HVAC and cooling systems for the AUKUS program as a Principal Mechanical Engineer. You will develop mechanical solutions, manage requirements, and ensure compliance throughout the engineering lifecycle. This key role in Barrow-in-Furness demands expertise ...
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United Kingdom , Barrow-in-Furness
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43.00 - 57.97 GBP / Hour
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Morson Talent
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Principal Hardware Engineer
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Lead innovative hardware engineering for cutting-edge avionics like Helmet-Mounted Displays and Flight Controls. This senior role in Rochester, UK, requires expertise in safety-critical systems, the full development lifecycle, and tools like Mentor Graphics and MATLAB. You will guide complex desi...
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United Kingdom , Rochester
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Morson Talent
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Principal Mechanical Engineer
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Lead mechanical engineering projects in Preston, ensuring design integrity throughout the lifecycle. This senior role requires Chartered status (or progression), CAD expertise, and strong stakeholder leadership. Security Check (SC) clearance is essential. We offer a competitive salary and welcome...
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United Kingdom , Preston
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Morson Talent
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Principal Electrical Design Engineer
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Lead electrical design for major nuclear energy projects in Manchester. This senior role requires extensive nuclear sector experience, chartered status, and knowledge of key directives (ATEX, PED, LVD). You will provide technical leadership, mentor junior engineers, and ensure compliance with all...
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United Kingdom , Manchester
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Morson Talent
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Public Cloud - GCP Principal Engineer
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Lead the design and strategy of Barclays' GCP platform in this principal engineer role. Apply your deep GCP and financial services expertise to build secure, resilient cloud solutions. This hands-on role offers technical leadership in a collaborative, innovative environment with competitive benef...
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United Kingdom , Knutsford; Glasgow
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Barclays
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Principal Integrity Engineer
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Lead integrity assessments and risk-based strategies for conventional and clean energy power plants. This senior Derby-based role requires 10+ years' experience in pressure systems, defect assessment, and PSSR compliance. Enjoy a comprehensive benefits package including profit share, flexible wor...
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United Kingdom , Derby
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Risktec Solutions
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Senior Principal Hardware Engineer
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Lead cutting-edge hardware design for safety-critical aerospace systems in Rochester. This 12-month contract requires a Senior Principal Engineer with full lifecycle experience and BPSS clearance. Provide technical leadership on projects like Helmet Displays using Mentor Graphics and MATLAB. A co...
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United Kingdom , Rochester
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Salary
69.72 - 94.00 GBP / Hour
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Outsource UK
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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.

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