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Principal Jobs (Hybrid work)

1215 Job Offers

Principal Electrical Engineer - Water
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Lead electrical/EICA design on major UK water projects with Egis in Manchester. Requires chartered status, 7-10+ years' water sector experience and multidisciplinary leadership skills. Hybrid working with fast progression.
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Salary
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Principal Process Engineer - Water
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Lead water and wastewater process design at Egis as Principal Process Engineer in Bristol. Requires 8-10+ years' experience, Chartered status, and BioWin/SUMO modelling skills. Hybrid role with fast progression.
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Principal Flood Risk Consultant
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Lead flood risk projects across the UK with Egis as Principal Flood Risk Consultant in Manchester. Requires 7+ years' experience, chartered status, and expertise in FRAs and hydraulic modelling.
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Principal Network Modeller
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Lead Infoworks ICM network modelling at Egis in London, Bristol or Manchester (hybrid). Shape sustainable water infrastructure, mentor colleagues and deliver UK-wide projects. 8+ years' experience required.
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Principal Analog Design Engineer
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Principal Analog Design Engineer in Duluth to architect and verify CMOS analog blocks for custom ASICs. Requires 10-15 years of analog design experience and DDR5/DDR6 I/O expertise.
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Principal Digital Design Engineer
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Renesas seeks a Principal Digital Design Engineer in San Jose to lead SOC architecture and RTL development. Requires 8+ years experience, strong protocol knowledge, and offers a dynamic, multicultural environment.
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Principal Wastewater Modeller
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Lead wastewater modelling projects at Egis as Principal Wastewater Modeller in Bristol. Requires 8+ years Infoworks ICM experience, hydraulic modelling expertise, and mentoring skills. Hybrid role with fast progression and UK-wide impact.
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Principal Engineer - Databricks Data Engineer
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Lead Databricks platform engineering in Guadalajara. Audit workspaces, harden Unity Catalog, define governance standards, and build automation for cost, observability, and data quality. Requires Azure Data Factory and Databricks expertise.
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Principal Hardware Engineer
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Lead hardware development at Arable in San Francisco Bay area. Requires 6+ years PCB design experience, FCC/CE knowledge, and full lifecycle expertise. Competitive benefits and meaningful impact on global food systems.
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Location
United States, San Francisco Bay area
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Principal AI Developer Experience Engineer
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Lead AI adoption at Atom Computing in Boulder as Principal AI Developer Experience Engineer. Define best practices for AI-assisted coding and build shared tooling for physicists and engineers. Requires 8+ years in software, Python, and C++/Rust.
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Salary
170000.00 - 200000.00 USD / Year
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Principal Machine Learning Engineer
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ASOS seeks a Principal Machine Learning Engineer in London to lead AI-powered fashion discovery within the Search & Discovery team. Requires extensive experience building large-scale ML systems, owning technical architecture, and a product-focused mindset.
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Senior / Principal Civil Engineers
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Aqua Consultants seeks Senior/Principal Civil Engineers for hybrid roles in water and environment sectors. Lead multidisciplinary projects, manage teams, and drive innovation. Requires chartered status and wastewater expertise.
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Principal EC&I Engineer
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Assystem seeks a Principal EC&I Engineer in Warrington to lead nuclear, defence and infrastructure projects. Requires 10+ years in EC&I design, team leadership and a relevant engineering degree.
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Principal EC&I Engineer
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Assystem seeks a Principal EC&I Engineer in Whitehaven to lead electrical services design in nuclear decommissioning. Requires CDM expertise, cable routing skills, and strong communication. Enjoy top-tier benefits and career growth.
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Principal Fire Engineer
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AECOM seeks a Principal Fire Engineer in Manchester to lead fire engineering design projects, CFD and evacuation modelling. Requires CEng status, UK regulations expertise, and mentoring skills.
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Principal Fire Engineer
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AECOM seeks a Principal Fire Engineer in London to lead fire engineering design projects, CFD and evacuation modelling. Requires CEng status, UK regulations expertise, and mentoring skills.
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Principal Fire Engineer
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AECOM seeks a Principal Fire Engineer in St Albans to lead fire engineering design projects, CFD and evacuation modelling. Requires CEng status, UK regulations expertise, and mentoring skills.
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Principal Fire Engineer
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AECOM seeks a Principal Fire Engineer in Edinburgh to lead design projects, deliver CFD and evacuation modelling, and mentor junior engineers. Requires Chartered status (CEng) and strong UK fire regulations expertise.
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Principal, Revenue Marketing (International)
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Lead international revenue marketing at Immuta, shaping go-to-market strategy across global B2B SaaS markets. Drive integrated campaigns, AI-powered marketing, and pipeline growth from London.
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Salary
138000.00 - 161000.00 GBP / Year
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Principal Cisco Engineer III - Top Secret Clearance Required
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Agile Defense seeks a Principal Network Engineer III in Pocatello, ID (hybrid). Requires active Top Secret clearance with SCI eligibility and Cisco CCNA. Design and support advanced data center networks.
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Salary
114000.00 - 125000.00 USD / Year
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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.