Job offers - CrawlJobs

Principal United Kingdom Jobs (On-site work)

104 Job Offers

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 Platform Advisor - London
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Leya
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Principal Product Manager
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UiPath
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Principal Building Inspector
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SOCOTEC UK
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Principal Consultant
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Impellam Group
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Principal Consultant
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Impellam Group
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Principal Telecom Engineer
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McDermott
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CDM Principal Designer
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45000.00 - 55000.00 GBP / Year
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Brandon James
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Building Regulations Principal Designer
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50000.00 - 65000.00 GBP / Year
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Brandon James
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Principal Electronics Design Engineer
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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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Principal Consultant – Operational Analysis
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Osprey CSL
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Principal Ecologist
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Lead and inspire a team of five Ecologists as Principal Ecologist, based between Cambridge and St Neots. This senior role demands a CIEEM member with 5–8 years’ consultancy experience, a protected species licence, and expertise in PEA, BNG, and EcIA. You will win and deliver complex projects, men...
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United Kingdom, Saint Neots
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Brown & Co
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Sr Principal Engineer - Software Quality
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Sr Principal Engineer - Software Quality role in Gloucester, UK, leading compliance for life-saving medical devices. Requires 10+ years in software quality engineering with expertise in ISO 13485, EU MDR, and IEC 62304. Drive Agile integration with regulatory frameworks, managing design controls ...
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Baxter
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Principal Python Engineer
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Principal Python Engineer sought by Europe’s largest equities exchange for a senior individual contributor role in London. You will lead complex data pipeline and event streaming projects, mentor engineers globally, and drive new product features. Requires expert Python, advanced SQL, Kafka, Airf...
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135000.00 - 145000.00 GBP / Year
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Signify Technology
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Principal Design Engineer - Bridges
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Lead the design of bridges and highway structures as Principal Design Engineer at M Group Highways in Peterborough. You’ll manage a team, prepare concept designs, and ensure technical compliance with Eurocodes and National Highways standards. Requires a Civil Engineering degree, Chartership, and ...
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United Kingdom, Fengate, Peterborough
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Social Value Portal Ltd
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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.