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Principal Jobs

3393 Job Offers

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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138000.00 - 161000.00 GBP / Year
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Principal Manufacturing Technician
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CesiumAstro seeks a Principal Manufacturing Technician in Westminster to assemble and test complex space communication systems. Requires 7+ years of hands-on manufacturing experience and expertise in advanced assembly, tooling, and lean principles.
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46.24 - 55.59 USD / Hour
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Principal FPGA Engineer
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Lead FPGA architecture and RTL design for advanced satellite communication systems in Westminster. Requires 15+ years of FPGA experience, AMD Versal expertise, and strong DSP skills. U.S. citizenship required.
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218000.00 - 226000.00 USD / Year
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Principal CAD Designer
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CesiumAstro seeks a Principal CAD Designer in Westminster to lead SolidWorks modeling, GD&T compliance, and PDM documentation across space and airborne communication systems. Requires 7+ years of aerospace CAD experience and U.S. citizenship eligibility.
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46.24 - 55.59 USD / Hour
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Principal Engineer, Manufacturing Engineering
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Lead manufacturing engineering for AI data storage systems in Bayan Lepas. Drive NPI transfers, DET measurements, and high-volume production. Requires engineering degree, 4-5 years experience, and C++/Python skills.
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Principal Engineer, Edge Applications & Mission Systems (R6245)
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Lead the architecture and delivery of edge application platforms for autonomous defense systems in San Diego. Requires 15+ years of software engineering experience and deep expertise in GCS, C2, and mission planning.
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220000.00 - 330000.00 USD / 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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114000.00 - 125000.00 USD / Year
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Principal Software Engineer - Veza
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Lead the end-to-end architecture of Veza's identity security platform in San Diego. Requires 15+ years in software engineering, deep cloud-native SaaS and graph database expertise (Neo4j), and Kubernetes skills.
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Principal Customer Success Executive
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Lead high-complexity transformations for ServiceNow's largest strategic customers as a trusted C-suite advisor in New York. Drive value management, identify pipeline opportunities, and shape executive customer strategy.
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Principal Customer Success Executive
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Lead high-complexity transformations for ServiceNow's largest strategic customers in Phoenix. As a trusted C-suite advisor, drive value management, adoption, and pre-sales pipeline opportunities.
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Principal Customer Success Executive
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Lead high-complexity transformations for ServiceNow's largest strategic customers as a trusted C-suite advisor in Chicago. Drive value management, identify pipeline opportunities, and shape executive customer strategy.
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Principal Customer Success Executive
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Lead high-complexity transformations for ServiceNow's largest strategic customers as a trusted C-suite advisor in Addison. Drive value management, identify pipeline opportunities, and shape executive customer strategies.
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Principal Machine Learning Engineer
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Lead AI innovation at ServiceNow in Santa Clara as Principal Machine Learning Engineer. Drive technical vision for AI-powered security solutions using LLMs, RAG, and agentic architectures. Shape enterprise-scale ML systems.
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Senior Principal Solution Architect, Security and Risk
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Lead Security and Risk solution architecture at ServiceNow in San Diego. Requires 12+ years in professional services, 5+ years implementing Security and Risk solutions, and expertise in TPRM, IRM, and regulatory frameworks.
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Principal Software Engineer
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Lead AI-native security architecture at ServiceNow in Santa Clara. Requires deep AI/ML expertise with LLMs, agentic systems, RAG, plus React, Node.js, Python, Java, and cloud skills. Shape the future of cybersecurity.
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Principal Machine Learning Engineer
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Lead cloud-native platform innovation for Agentic AI at ServiceNow in Santa Clara. Requires 15+ years in distributed systems, Kubernetes, and Java/Go/Python. Shape next-gen AI infrastructure at enterprise scale.
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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.