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Principal United States Jobs (On-site work)

646 Job Offers

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Principal, Readiness & Productivity
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Blitzy seeks a Principal of Readiness & Productivity in Cambridge, MA to own onboarding and ramp programs across presales and post-sales teams. Design AI-native enablement experiences, build certification pathways, and drive measurable performance gains.
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Blitzy
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Principal Mechanical Engineer
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Lead mechanical architecture for autonomous directed-energy counter-drone systems in San Francisco. Requires 10+ years shipping complex hardware from prototype to production, strong CAD and FEA skills, and cross-disciplinary expertise. Salary $235K-$305K.
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Clera
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NEO Upper - 9-12th Grade Principal
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ACCEL Schools seeks an experienced Principal for Northeast Ohio College Preparatory School in Cleveland. Lead instructional vision, coach teachers, and drive student achievement. Requires valid Principal license and urban school leadership experience.
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ACCEL Schools
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Principal Research Scientist I, Biologics Analytical Research and Development, CMC Biologics Development
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Lead biologics characterization as Principal Research Scientist at AbbVie in North Chicago. Requires PhD with 6+ years industry experience and expertise in mass spec and separation-based analytical techniques.
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abbvie
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Principal Turbomachinery Engineer
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Radiant seeks a Principal Turbomachinery Engineer in El Segundo to lead high-speed rotating machinery design for transportable nuclear microreactors. Requires 10+ years, ANSYS/NX expertise, and full hardware ownership.
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Radiant Industries
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Principal ServiceNow Implementation Specialist (1054) - Enterprise Applications - Department of Technology
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Lead ServiceNow implementation for San Francisco's multi-year modernization project. Requires 5+ years in IT systems, ServiceNow ITSM expertise, and UI Builder/SOW skills. Permanent, full-time, competitive benefits.
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155298.00 - 195338.00 USD / Year
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City and County of San Francisco
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Principal Robotics Engineer - R&D
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Boston Engineering seeks a Principal Robotics Engineer in Waltham, MA to lead R&D for advanced robotic systems. Requires 10+ years engineering experience, 5+ in robotics, and hands-on integration expertise.
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Boston Engineering Corporation
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Senior Principal Analog Architect – Data Converters
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Senior Principal Analog Architect in San Jose to lead high-performance AFE and data converter design. Requires MSEE/PhD, 15+ years experience, and proven expertise in SAR, Delta-Sigma, and Nyquist converters.
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Renesas Electronics
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Principal Robotics Software Engineer
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Lead production robotics software for autonomous defense systems in San Francisco. Requires 10+ years of hands-on C++ and ROS/ROS2 experience shipping field-ready systems. On-site role, $235k-$305k.
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Clera
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Principal PIC (Photonic Integrated Circuit) Design Engineer
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Lead silicon photonic IC design at Voyant Photonics in NYC, driving chip-scale LiDAR and optical circuit switches for AI data centers. Requires PhD, 7+ years PIC design experience, and full tapeout ownership.
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Voyant Photonics
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Sr Principal Software Development Engineer
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Lead software architecture and technical strategy for advanced semiconductor test platforms at FormFactor in Beaverton. Requires C#/.NET expertise, large-scale systems design, and cross-team technical leadership.
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115800.00 - 151935.00 USD / Year
Formfactor
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Field Manager, CXQC, Principal
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Hands-on Field Manager needed for CXQC commissioning across data centers and mission-critical facilities. Requires 2-5 years in commissioning or field engineering, MEP systems knowledge, and readiness to travel or relocate to project sites.
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Atlar
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Principal Facilities Engineer
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Hims & Hers seeks a Principal Facilities Engineer in Mesa to lead GMP facility systems across HVAC, electrical, and purified water. Requires 8-10 years facilities engineering experience and deep cGMP knowledge.
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Hims & Hers
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Principal Facilities Engineer
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Hims & Hers seeks a Principal Facilities Engineer in New Albany to lead GMP facility systems (HVAC, EMS, BMS) on the Wed-Sun shift. Requires 8-10 years facilities engineering experience and cGMP expertise. Competitive salary, equity, and unlimited PTO.
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Hims & Hers
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Principal Product Cybersecurity Assurance Engineer
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Lead product cybersecurity assurance for Humanoid's HMND 01 robots in Cambridge, US. Requires ISO 27001/NIST RMF expertise, IEC 62443 knowledge, and TARA skills. Competitive salary, equity, and full benefits.
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Humanoid
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Managing Principal – Data & Technology Transformation
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Lead enterprise data and technology transformation for top financial services clients as Managing Principal at Capco in McLean. Requires 12+ years in data, consulting, and large-scale transformation with strong technical depth.
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Capco
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Principal User Experience Researcher
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Lead UX research at Fidelity in Westlake, TX. Plan and execute qualitative and quantitative studies, drive insights that shape product strategy. Requires 7+ years of UX research experience and strong stakeholder communication skills.
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Fidelity Investments
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Principal Account Manager, Enterprise and Partnership
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Steadily seeks a Principal Account Manager in Overland Park, KS to own partner retention and expansion across its partnerships channel. Requires 5+ years in account or partner management plus enterprise sales skills. Top-of-market pay, equity, and benefits.
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Steadily
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Principal ServiceNow Implementation Specialist (1054) - Enterprise Applications - Department of Technology
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Lead ServiceNow implementation for a multi-year San Francisco modernization project. Requires 5+ years in IT systems, ITSM expertise, and hands-on SOW, UI Builder, and AI/Now Assist skills.
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Salary
155298.00 - 195338.00 USD / Year
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City and County of San Francisco
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Principal Software Engineer
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Lead crypto trading platform innovation as a Principal Software Engineer in Jersey City. Requires 10+ years in software engineering, Java zero GC expertise, and low-latency systems design. Competitive benefits included.
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107000.00 - 216000.00 USD / Year
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Fidelity Investments
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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.