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23,579 Principal jobs

Principal engineering roles setting technical direction org-wide.

23.6K jobs
Placements24
11 hours ago

Principal Data Scientist: Big Data Analytics Lead

New AfricaPrincipal
South Africa
Randburg

Placements24 in Randburg, South Africa, is hiring a Principal Data Scientist to lead big data analytics initiatives — extracting insights from massive datasets, building predictive models, and driving production ML deployments while mentoring junior data scientists and shaping data strategy.

Analytics Big Data Data Analytics Machine Learning
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Placements24
11 hours ago

Principal Data Scientist (Big Data Analytics)

New AfricaPrincipal
South Africa
Randburg

Senior data science role in Randburg, South Africa: lead advanced big data analytics projects, build and deploy production ML models on large-scale pipelines, and mentor junior data scientists. Core stack includes Spark, Hadoop, and Kafka, with Python/R, SQL/NoSQL, and cloud platforms like AWS, Azure, or GCP.

Analytics AWS Azure Big Data Cloud +16 skills
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ConcertAI
51 views 11 hours ago

Principal Solution Consultant, Market Access Solutions

New North AmericaPrincipal 7 questions
United States
Plymouth Meeting, Pennsylvania

Senior market-facing pre-sales solution consultant at ConcertAI, an AI-driven precision medicine company. Partners with Sales to win strategic pharma/life-sciences deals by leading discovery, executive presentations, and solution strategy around ConcertAI's real-world data, analytics, and Cara AI platform, with variable comp tied to commercial results.

AI Analytics Pre-sales SaaS
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Microsoft
11 hours ago

Principal Hardware Engineer

New On-siteNorth AmericaFull-timePrincipal
United States
Washington, Redmond

Overview Microsoft Silicon, Cloud Hardware, and Infrastructure Engineering (SCHIE) is the team behind Microsoft’s expanding Cloud Infrastructure and responsible for powering Microsoft’s “Intelligent Cloud” mission.…

Agentic AI AI Automation Azure Cloud +7 skills
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Divergent Technologies
37 views 11 hours ago

Principal Automation & Controls Engineer

Open 98d On-siteNorth AmericaFull-timePrincipal Salary + equity 2 questions H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.
United States
Torrance, California

Leads the design and deployment of advanced robotic automation and control systems for next-generation manufacturing factories, using PLC, HMI, SCADA, and industrial robotics.

Agile AutoCAD Automation EPLAN Git +7 skills
148K – 236K $
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Sahaj Software
11 hours ago

Lead / Principal Engineer - Full Stack

New North AmericaPrincipal 4 questions
United States
Austin, Texas

role = "Lead or Principal ENGINEER" if raises_bar(team) and depth >= LEGENDARY and ships_code else "SENIOR" Let’s decode this We're not just looking for someone who has "been around for 10+ years". We're looking for…

AI API ClickHouse .NET Elixir +12 skills
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Nova
31 views 11 hours ago

Principal Electrical Engineer

Open 28d On-siteNorth AmericaPrincipal
United States
Fremont, CA

We are seeking an experienced EE Technical Manager to lead the electrical system design, development, integration, and troubleshooting of advanced semiconductor capital equipment and precision instrumentation. This…

Acceptance Criteria Corrective Action Firmware FMEA Pcb +2 skills
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Microsoft
11 hours ago

Principal Architect

New On-siteNorth AmericaPrincipal
United States
Washington, Redmond

Overview Security represents one of the most critical priorities for our customers in a world of evolving digital threats, increasing regulatory requirements, growing estate complexity, and rapid advances in AI.…

Agentic AI AI API Authentication Automation +12 skills
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One New Zealand
11 hours ago

Core Network DevOps Principal Engineer

New RemoteAPACPrincipal
New Zealand
Auckland

Principal engineer who designs, implements and supports the 24x7 DevOps operation of One NZ's mobile and fixed core data network — doing network design, capacity/performance planning, peer reviews, automation and incident resolution. Core tech: 3GPP/ETSI telecom cores, IMS, VMware/OpenShift/Kubernetes, and Azure DevOps CI/CD.

Agile AI Automation Azure Azure DevOps +8 skills
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One New Zealand
11 hours ago

Core Network DevOps Principal Engineer – Hybrid & AI‑Driven

New APACPrincipal
New Zealand
Auckland

One New Zealand is hiring a Principal Engineer to design, implement and support 24x7 operation of its Core Mobile and Fixed Data Network DevOps domains, driving improvements in network capability, performance and reliability with robust testing and on-call coverage.

AI DevOps
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New Zealand Transport Agency
11 hours ago

Principal Software Engineer

Open 0d APACPrincipal
New Zealand
Wellington

Principal Software Engineer at NZ Transport Agency (Waka Kotahi) in Wellington: hands-on technical leadership across frontend, backend, mobile and integration teams — setting engineering standards, mentoring engineers, and driving AI-augmented engineering and DevSecOps using Java/Spring Boot, React, PostgreSQL, Azure, Docker and Kubernetes.

AI API Automation Azure Cloud +11 skills
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Microsoft
11 hours ago

Principal Product Designer - CTJ - Secret

New On-siteNorth AmericaPrincipal
United States
Multiple Locations, Multiple Locations

Overview Microsoft empowers every person and every organization on the planet to achieve more. For our defense industrial base customers, that means delivering trusted, intuitive solutions that help people navigate…

Accessibility AI Cloud Design Thinking Figma +2 skills
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Hasbro
37 views 11 hours ago

Principal Software Engineer

Open 27d HybridNorth AmericaPrincipal 7 questions H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.
United States
Renton, Washington

Principal engineer on Wizards of the Coast's (Hasbro) Digital Innovations team, owning product initiatives end to end and building them hands-on with agentic AI — from problem definition through production launch and data-driven iteration. Full-stack work across TypeScript/JavaScript, Go/Python/C#, and AWS.

Agentic AI AI API Automation AWS +21 skills
173K – 259K $
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Microsoft
11 hours ago

Principal Security Researcher - Red Team

New On-siteNorth AmericaPrincipal
United States
Washington, Redmond

Overview Microsoft Security is seeking agent and systems red teamers to join a new red team spanning agent security, offensive security, cloud identity, attack automation and adversarial AI. You will conduct hands-on…

Agentic AI AI Automation Cloud Container Security +1 skills
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Microsoft
11 hours ago

Principal AI Model Security Researcher

New On-siteNorth AmericaPrincipal
United States
Washington, Redmond

Overview Microsoft Security is seeking a Principal AI Model Security Researcher to join a new red team spanning adversarial machine learning, model integrity, offensive security, automation and privacy. You will…

Agentic AI AI Automation Cloud Data Pipelines +5 skills
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Reddit Backed by a16zBacked by Sequoia
385 views 11 hours ago

Principal Data Scientist, Ads

Open 146d RemoteNorth AmericaContractPrincipal Salary + equity 6 questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.Licensed NL sponsor — This employer appears on the IND public register of recognised sponsors for work and highly skilled migrants. The recognition belongs to the employer and is not a commitment to sponsor this role.H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.Canada LMIA employer — This employer was issued a positive Labour Market Impact Assessment by Employment and Social Development Canada in the last four quarters, through the High Wage, Global Talent or Permanent Resident streams. The approval belongs to the employer and is not a commitment to sponsor this role.
United States

Reddit is hiring a Principal Data Scientist to lead the long-term scientific strategy for its advertising platform — defining measurement, prediction, and optimization frameworks for ads auctions, targeting, and advertiser LTV. The role relies heavily on statistics, econometrics, causal inference, machine learning, Python/R, and SQL at large scale.

A/B Testing AI Analytics Causal Inference Data Science +5 skills
268K – 365K $
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Reddit Backed by a16zBacked by Sequoia
328 views 11 hours ago

Principal Data Scientist, User Ecosystem

Open 15d RemoteNorth AmericaContractPrincipal Salary + equity 5 questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.Licensed NL sponsor — This employer appears on the IND public register of recognised sponsors for work and highly skilled migrants. The recognition belongs to the employer and is not a commitment to sponsor this role.H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.Canada LMIA employer — This employer was issued a positive Labour Market Impact Assessment by Employment and Social Development Canada in the last four quarters, through the High Wage, Global Talent or Permanent Resident streams. The approval belongs to the employer and is not a commitment to sponsor this role.
United States

Very senior data science leader at Reddit setting the measurement, modeling, and experimentation strategy for its consumer/user ecosystem — how users discover value, form habits, and deepen engagement across content and communities. Core work spans recommender systems, user/LTV modeling, causal inference, and ML with frameworks like PyTorch or JAX.

AI Causal Inference Data Science Deep Learning JAX +3 skills
313K – 365K $
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Reddit Backed by a16zBacked by Sequoia
78 views 11 hours ago

Senior Principal Program Manager, GTM Excellence

Open 78d North AmericaContractPrincipal Salary + equity 6 questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.Licensed NL sponsor — This employer appears on the IND public register of recognised sponsors for work and highly skilled migrants. The recognition belongs to the employer and is not a commitment to sponsor this role.H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.Canada LMIA employer — This employer was issued a positive Labour Market Impact Assessment by Employment and Social Development Canada in the last four quarters, through the High Wage, Global Talent or Permanent Resident streams. The approval belongs to the employer and is not a commitment to sponsor this role.
United States
Chicago, IL, Los Angeles, CA, New York City, NY, San Francisco, CA

Senior Principal Program Manager on Reddit’s GTM Excellence team, leading large-scale strategic initiatives, owning end-to-end processes (e.g., buy cycle, forecasting), and collaborating with executive leadership (CRO, COO) and cross-functional teams to transform methodologies and systems for Reddit advertisers.

AI Automation Go-to-Market Program Management Root Cause Analysis +1 skills
180K – 313K $
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Microsoft
11 hours ago

Senior Principal Design Verification Engineer

New On-siteNorth AmericaFull-timePrincipal
United States
Washington, Redmond

Overview Microsoft Silicon, Cloud Hardware, and Infrastructure Engineering (SCHIE) is the team behind Microsoft’s expanding Cloud Infrastructure and responsible for powering Microsoft’s “Intelligent Cloud” mission.…

Agile AI Azure Cloud Cryptography +2 skills
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Berkshire Hathaway Energy
11 hours ago

Software Engineer 3/Sr/Principal

New North AmericaPrincipal
United States
Des Moines, Polk County

Description The software engineer provides advanced technical expertise and guidance in the architecture, design, programming, testing, documentation and implementation of complex computer applications and systems.…