23,555 Principal jobs
Principal engineering roles setting technical direction org-wide.
Principal Cyber Architect
Cybersecurity architect in BAE Systems' Space & Intelligence Division, ensuring security, resilience, and accreditation of DoD mission-critical systems across their lifecycle. Day-to-day involves RMF Assessment & Authorization, security engineering, vulnerability assessments, and DevSecOps integration using MBSE/Cameo, DISA STIGs, and Zero Trust.
Principal Software Engineer (all genders)
Über uns Wir gestalten einen digitalen Staat – gemeinsam mit der Verwaltung. Als Partner auf Augenhöhe stärken wir die Verwaltung auf ihrem Weg, die eigene Digitalisierung selbst voranzutreiben. Mit eigener iterativer…
Partenaire talents principal(e) / Senior Talent Partner
Systemex Automation Lieu : Laval, Québec Relève de : Vice-présidente, Ressources humaines Services soutenus : PMO, ingénierie, automatisation, mécanique, électricité et services corporatifs Sommaire du poste La…
Principal Cloud Software Architect
Enterprise Architect on Caylent's Cloud Native Applications team, leading delivery on the company's largest AWS client engagements: owning architecture and technical decisions, hands-on building AI-first cloud-native solutions, and communicating with senior client stakeholders. Fully remote role based in Argentina, paid in USD, with up to 25% travel.
Principal Data Architect
Leads design and implementation of complex cloud-based data solutions on AWS for Caylent's clients in a consultative capacity, acting as a data engineering SME for pre-sales, interviewing candidates, and mentoring architects and engineers. Centers on AWS data/analytics: Spark, SageMaker, Bedrock, IaC, CI/CD, and Python.
Principal Software Engineer
Overview We are looking to welcome a Principal Software Engineer to a group of innovative, energetic and diverse engineers on the CoPilot Runtime Platform team, which is the engineering organization responsible for the…
Principal Data Engineer
Role: Principal Data Engineer Location: London Onsite Full Time Start Date: ASAP End Date: 12 months Daily Rate Inside IR35 Payroll provider – Rockford Payroll Info for Contingent Workers – Rockford Pay Assignment…



Principal Software Engineer - Roblox Economy Platform
Principal engineer leading backend systems that power Roblox’s virtual currency (Robux), enabling creators to monetize games and process billions of transactions.

Principal Electrical Engineer, FPGA Development
Staff FPGA Developer architecting reconfigurable logic for spacecraft avionics and payload systems, leading a real-time FPGA-based image processing pipeline for on-orbit detection and tracking using VHDL/Verilog.



Principal Software Engineer, Data Tooling
Engineering Manager leading Roblox's Data Tooling team, which builds shared frameworks for data quality, lineage, metadata, observability, and self-service used by data engineering, science, ML, and product teams. You'll own the roadmap, coach engineers, and set technical direction, working hybrid from San Mateo (onsite Tue–Thu).



Principal Software Engineer - Commercial Content
Develops AI-driven full-stack solutions for Roblox’s Content Understanding Platform, processing billions of assets (3D models, audio, text, video) to enable search, moderation, and generative AI features.



Principal Product Marketing Manager, Foundation AI
Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At…
Senior Principal Rack System Integration Engineer
A senior hands-on hardware role integrating SambaNova's AI accelerators into rack-scale systems — racking/stacking network, power, and compute gear, prototyping rack designs, and taking them to mass production and customer datacenter deployments. Core work centers on datacenter equipment (switches, power, fiber/copper networking, air/liquid cooling) and cross-team/vendor coordination.
Principal Machine Learning Engineer - Matchmaking
Principal ML engineer owning the technical vision for Roblox's matchmaking: defining objective functions and building ranking, prediction, and player-to-server assignment algorithms that optimize player experience, developer success, and system efficiency at massive scale. Onsite in San Mateo Tue–Thu; base pay $295,250–$345,040 plus equity.
AI Research Engineer: Vision AI / VLM / Physical AI-1
Centific (posted via OneForma) is hiring an AI Research Engineer to turn cutting-edge computer vision, vision-language model (VLM), and embodied/physical AI research into production modules — building and fine-tuning 2D/3D perception models, running VLM training/evaluation, and prototyping robotics pipelines in sim (NVIDIA Isaac/Omniverse). Core stack: PyTorch/Python, CUDA, Kubernetes/Docker/Ray/F
Principal Software Engineer
Hands-on principal engineer designing, building, and optimizing Change Data Capture and data integration software that reads database transaction logs across mainframe and distributed environments. Core tech: C/C++, database internals, z/OS mainframe systems programming, and high-volume data processing at enterprise scale.


Principal Software Engineer, Frontend Experiences
Principal engineer shaping Algolia's entire frontend platform: defining multi-year technical vision, evolving the Algolia Dashboard into one coherent environment, driving a shared component library, and setting engineering standards while mentoring engineers. Deep TypeScript/React and full-stack (APIs, microservices) expertise is central to the role.
Principal, Software Engineer - Fullstack
Hands-on technical leader and architect for Walmart's Marketplace Orders and Returns platform, driving end-to-end architecture across Java backend microservices and React/Redux frontends in a high-scale, event-driven, distributed environment, while mentoring senior engineers and setting API/integration best practices.
Principal Manufacturing Engineer
ROCKET EMS Principal Manufacturing Engineer Carson City Nevada | Manufacturing Engineering Position Summary The Principal Manufacturing Engineer provides hands-on technical leadership and manages the development and…