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Principal Jobs

3395 Job Offers

Principal Power Controls Engineer
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Lead power electronics controls at Anduril in Costa Mesa. Design and validate closed-loop algorithms for multi-kW SiC/GaN converters using Simulink/PLECS. Requires 15+ years in digital control loops and U.S. Secret clearance eligibility.
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Principal Embedded Engineer, EW
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Anduril seeks a Principal Embedded Engineer in Costa Mesa to develop high-performance EW software, including DSP and RFML models. Requires 15+ years in software engineering and U.S. Top Secret SCI eligibility.
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Principal Mechanical Engineer / Systems Engineer
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Lead mechanical architecture for HaloBraid, a first-of-its-kind robotic braiding device in Cambridge, MA. Requires 10+ years in electromechanical product development, CAD review, DFM/DFA, and pilot-to-production delivery. Equity, full benefits, unlimited PTO.
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Principal ASIC Engineer (Mixed-Signal)
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Voyant Photonics seeks a Principal Mixed-Signal ASIC Engineer in NYC to lead its custom IC program. Requires 7+ years analog/mixed-signal design, TIA expertise, and multiple tapeouts. Ground-floor role delivering silicon in 9-12 months.
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Principal Game AI Engineer
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Ghost Story Games seeks a remote Principal Game AI Engineer for Judas, Ken Levine's new title. Requires deep UE4/UE5 AI expertise, strong C++, and a shipped AAA action/FPS title. Own AI systems from design to polish.
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United States, Massachusetts
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Principal Information Security & Data Protection Officer
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Lead information security and data protection at Unmind, a mental health tech company. Remote-first UK role requires ISO 27001, UK/EU GDPR expertise, and DPO experience. Drive AI governance and client trust.
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Staff / Principal Software Engineer – Cloud Platform & SaaS
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Lead cloud platform architecture for SingleStore Helios as Staff/Principal Engineer in San Francisco. Requires 8-12+ years distributed SaaS, deep Kubernetes and Go/Python expertise, multi-cloud networking skills.
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Principal Test Framework Software Engineer
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Lead the architecture of scalable test automation frameworks for cutting-edge AI hardware at Graphcore in Austin. Requires strong Python, CI/CD, and Principal-level leadership. Competitive benefits included.
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Principal Engineer, Civil
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Lead civil engineering projects across the western U.S. as a Principal Engineer in Boise. Requires PE registration, 10+ years of experience, and proven team leadership. Enjoy strong benefits and growth opportunities at a top AEC firm.
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Principal Research Scientist I, In Vivo CAR-T Biology
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AbbVie seeks a Principal Research Scientist I in South San Francisco to lead in vivo CAR-T biology, driving novel CAR designs and next-gen lentiviral platforms. Requires PhD with 6+ years in CAR-T discovery or immuno-oncology.
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Principal Research Scientist I, Biologics Drug Product Development
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Lead biologics drug product development at AbbVie in North Chicago. Seeking BS/MS/PhD with 6-14+ years in pharmaceutics or related fields, expertise in formulation, sterile manufacturing, and tech transfer.
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Principal Rail Traction Power / Substation Engineer
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AECOM seeks a Principal Rail Traction Power/Substation Engineer in Bucharest to lead multidisciplinary design teams on complex infrastructure projects. Requires significant traction power and HV substation design experience, CRE/Lead Engineer background, and chartered status or equivalent.
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Principal Consultant
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Lead enterprise AI-powered process automation deployments as a Principal Consultant in Chennai. Requires 10+ years in IT, deep Python/SQL expertise, and proven technical leadership. In-office role driving hyperautomation.
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Principal Customer Marketing Manager
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Lead Snowflake's customer advocacy strategy in Menlo Park, driving billboard activations, LA28 programs, and the Black Diamond Council. Requires 8+ years in B2B SaaS customer marketing and executive program leadership.
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Principal Design Verification Engineer- SerDes/PHY IP
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Lead SerDes/PHY IP verification at Astera Labs in San Jose. Requires 8+ years in UVM/SystemVerilog, mixed-signal co-simulation, and high-speed protocols like PCIe or CXL. Architect verification for AI connectivity solutions.
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Principal / Senior Principal Electrical Design Engineer
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Astera Labs seeks a Principal Electrical Design Engineer in San Jose to architect high-speed board-level hardware for AI infrastructure. Requires 12+ years in PCIe Gen5/6 and 400G/800G Ethernet design with strong signal integrity expertise.
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Principal Java Engineer
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Lead Java development at a modern software house in Manchester. Drive Agile delivery, build features with Spring Boot, AWS and Kubernetes, and mentor your team. Bonus included.
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70000.00 - 80000.00 GBP / Year
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Principal Mechanical Engineer
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Lead mechanical architecture for missile launcher systems at CHAOS Industries in El Segundo. Requires 10+ years in aerospace/defense design, CAD proficiency, and electro-mechanical integration expertise.
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Principal Mechanical Engineer
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CHAOS Industries seeks a Principal Mechanical Engineer in El Segundo, CA to lead hands-on integration of ruggedized electronics and mission systems into mobile platforms. Requires 8+ years in aerospace/defense mechanical design and strong CAD skills.
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Principal Scientist - R&D
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Lead innovative synthetic chemistry research as Principal Scientist in Ahmedabad. Requires PhD in Organic/Medicinal Chemistry and 8-12 years CRO industry experience. Drive complex route design and methodology development.
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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.