23,484 Principal jobs
Principal engineering roles setting technical direction org-wide.
Principal Machine Learning Engineer, Applied AI
A senior IC role adapting LILA's scientific AI models to customer workflows through post-training (SFT, RLHF-style methods like DPO/PPO/GRPO), building evaluation loops, and debugging production model behavior. Core stack is Python and PyTorch with deep LLM/multi-modal/agentic AI expertise.
Staff / Principal Research Engineer, AI Safety Mitigations
Research engineer on LILA's AI safety team, building and testing safeguards that mitigate risks from increasingly capable closed-loop scientific AI — spanning model training, post-training, classifiers, monitoring, access controls, and runtime interventions. Works hands-on with frontier models, agents, and lab-connected workflows alongside science, evaluation, and platform teams.
Staff / Principal Security Engineer, AI Safety and Security
Staff/Principal Security Engineer leading AI safety-and-security work at LILA Sciences: threat-modeling AI systems for autonomous scientific discovery, running adversarial tests of defenses, and turning findings into implemented safeguards. Requires deep hands-on security expertise (architecture, offensive security, app/infra security, or IR) plus curiosity about AI/ML safety.
Principal Network Engineer
Senior hands-on IC owning the design, security, and scaling of LILA Sciences' multi-site network spanning offices, autonomous AI labs, and OT/robotics environments — driving SD-WAN/SASE (e.g. Cato), firewall-to-SASE migration, VLAN/segmentation design, monitoring, and insourcing work from MSPs.
Senior / Principal Computational Biologist, AI Safety
Conducts original computational biology research on LILA's AI safety team, studying how LLMs, specialized biological models, agents and automated labs change what is biologically feasible, and translating risk judgments into evaluations, safeguards and dual-use policy boundaries. Requires deep computational biology expertise and strong scientific programming skills.
Senior / Principal Materials Scientist, AI Safety
LILA Sciences is hiring a Senior/Principal Materials Scientist for its AI safety team to map dual-use and misuse risks from increasingly capable scientific AI systems. Day to day: assessing materials-science threat landscapes, translating risk judgments into safeguards and policy boundaries, and collaborating across science, engineering, and policy.
Principal Software Engineer - TradeNet
Chief Architect leading the technical rebuild of TradeNet, Singapore's national single window for trade permits, decomposing a legacy Java/J2EE monolith into a cloud-native platform on AWS. Sets cross-team architecture, drives legacy modernisation, and pioneers LLM/agentic-AI engineering workflows.
Cyber Security Engineering Principal
Principal-level cyber security engineering role at Water Corporation (WA's public water utility) in Leederville, Perth — a permanent, full-time job helping strengthen security capabilities, modernise systems and deliver technology services. Salary from $167,223 plus 12% super, with flexible work arrangements.
Director Principal Technical Program Manager, Delivery Enablement and Field Integration, Global Data Centers
The Modular Manufacturing & Integration organization is leading an industry-defining transformation in how Google delivers technical infrastructure for the AI era. Transitioning away from conventional, on-site,…
Principal / Senior Principal Software Engineer, Java/Python & AI
Principal-level hands-on engineer building enterprise Java applications and backend services with Spring Boot, REST APIs, and microservices, plus Python automation and SQL work, while leveraging generative-AI tools like Copilot and Claude. Hybrid role: four days onsite in Atlanta or St. Louis; $150k-$180k base.
Principal Product Manager
Wallapop is a Barcelona based scale-up driven by the purpose to empower people to embrace a more conscious and human way of consumption. We believe in a world where collaborative economy is mainstream. This is what…
Principal Professional Services Consultant
At Skillsoft, we believe skills fuel growth. Our mission is to empower every organization and every learner to turn constant change into continuous growth. As part of the team, your skills will help organizations…
Principal Ontology Architect (Healthcare)
About Virtasant Virtasant is a global technology services company with a network of over 4,000 technology professionals across 130+ countries. We specialize in cloud architecture, infrastructure, migration, and…
Principal Software Engineer — AI-driven Development
Principal Software Engineer — AI-driven Development Ми створюємо вимірювальні програмно-апаратні комплекси для обробки даних у сфері радіокомунікацій. Для нас AI вже є частиною щоденної розробки. Ми використовуємо його…
Principal ICT Security Operations Specialist (m/w/d)
Deine Aufgaben Du agierst als zentrale Anlaufstelle für alle 1st-Line Themen der Informationssicherheit und bist maßgeblich für die Erhöhung der Sicherheit und Resilienz unserer IKT-Systeme verantwortlich. Zu deinen…
Principal, Customer Service Program Management
The Customer Service Program Team is looking for an autonomous Senior CS Program Manager to serve as a critical gatekeeper and master process architect for frontline operations. Operating with minimal oversight, you…
Principal Systems Engineer
Senior systems engineering role at Dstl (UK Ministry of Defence lab) turning defence and security research into operational capabilities, focused on cyber. Day to day: lead systems engineering across complex programmes, define system requirements and enterprise/system-of-systems architectures, advise senior stakeholders, manage technical risk, and mentor engineers. Requires 80%+ on-site at Porton