23,555 Principal jobs
Principal engineering roles setting technical direction org-wide.
C3BM Principal Systems Analyst
Summary Venturi, LLC A Chenega Company has an exciting career opportunity for a C3BM Principal Systems Analyst who will be part of the Command, Control, Communications, and Battle Management (C3BM) systems engineering…
Principal Engineer, Identity & Access Management (IAM) - Microsoft Entra ID
Additional Location(s): US-MN-Arden Hills; US-MA-Marlborough Diversity - Innovation - Caring - Global Collaboration - Winning Spirit - High Performance At Boston Scientific, we’ll give you the opportunity to harness…
Principal Systems Engineer
Principal Systems Engineer at Rocket Lab Optical Systems in Tucson, AZ, supporting the full lifecycle of space-based electro-optical payloads for the U.S. Space Development Agency's Proliferated Warfighter Space Architecture — defining electrical and controls architecture, managing system requirements, and supporting integration, test, and verification.
Principal Network Software Engineer - TS/SCI
Principal engineer leading secure network software for spacecraft, managing suppliers and integration of radios, routers, and laser comms for space-to-space and space-to-ground links.
NUVIA UK - Principal HVAC Building Services Engineer
Principal HVAC Building Services Engineer Birchwood Park, Warrington Up to £68,000 DOE Permanent There has never been a more exciting time to join NUVIA UK. As a result of significant growth and major contract awards,…
Principal Electrical Engineer
ABOUT ROCKET LAB Rocket Lab is the end-to-end space company building rockets, spacecraft, and critical subsystems that keep the world connected, protected, expand humanity’s reach to the Moon, Mars, and beyond. We move…
Principal Product Manager
US Mobile is building a future where people can connect every part of their lives through one powerful software platform and beautiful user experience. We’re bringing mobile networks, home internet, and satellite…
Principal Group Security Assurance Manager
Overview Microsoft's Mission is to "Empower every person and every organization to achieve more" and Security is core to that statement. The M365 product portfolio makes up some of the most widely used and trusted…
Principal Network Engineer
Principal Network Engineer setting technical direction for Nscale's AI GPU cloud: designing large-scale InfiniBand, RoCE, and Ethernet fabrics (BGP/EVPN/VXLAN), leading Python/Ansible GitOps automation, and owning security, observability, and operations for high-performance AI training infrastructure.
Principal People Partner
Pie's mission is to empower small businesses to thrive by making commercial insurance affordable and as easy as pie. We leverage technology to transform how small businesses buy and experience commercial insurance.…
Principal AI Product Manager
Principal AI Product Manager at Astera Labs (NASDAQ: ALAB, AI infrastructure connectivity) will own strategy and multi-quarter roadmap for internal Applied AI products and workflows, leading discovery, prioritization, cross-functional delivery, and adoption of AI tools (e.g., Glean, Claude Code) with measurable business impact. Onsite in San Jose; base $185k–$240k plus bonus/benefits.
Principal Flight Controls Engineer
About Electra Air travel is about to become something more: more direct, more accessible, and more connected to the places where people live, work and want to be. Every day in the U.S., people make 35 million trips of…

Principal Mechanical Design & Analysis Engineer, Tooling
Designs and builds specialized tooling and automation equipment to manufacture rockets and engines, using CAD and FEA tools in a fast-paced aerospace environment.

Principal Mechanical Engineer, Factory Automation
At Relativity Space, we’re building rockets to serve today’s needs and tomorrow’s breakthroughs. Our Terran R vehicle will deliver customer payloads to orbit, meeting the growing demand for launch capacity. But that’s…
Principal Technical Program Manager
Overview The Cloud & AI organization accelerates Microsoft's mission to ensure that our company and industry is securing digital technology platforms, devices, and clouds in our customers' heterogeneous environments,…
Principal Software Engineer
Overview The Azure Regional Networking team is seeking talented, highly motivated engineers to build advanced services and infrastructure for provisioning and managing our cloud-scale physical network. This work spans…
Principal Systems Engineer, Air Vehicle Software
Principal Systems Engineer to define air-vehicle software requirements, model system architecture, and support certification for a Group 5 autonomous aircraft using model-based systems engineering.