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Principal Engineer Jobs

1765 Job Offers

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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AECOM
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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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Astera Labs
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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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Astera Labs
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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
Burns Sheehan
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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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CHAOS Industries
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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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CHAOS Industries
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Principal Technical Marketing Engineer | Spain | Remote
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Grafana Labs seeks a Principal Technical Marketing Engineer in Spain (remote) to build buyer-focused demos, lead workshops and webinars, and translate observability concepts into compelling stories. Requires 5+ years technical experience and 10-12 weeks travel.
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94025.00 - 112830.00 EUR / Year
Grafana Labs
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Principal Engineer - Reporting & Insights
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Lead Xero's Reporting & Insights technical strategy as Principal Engineer in a remote US role. Shape AI-native reporting architecture, mentor engineers, and drive multi-year innovation. Salary $287k-$320k plus equity.
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United States, US: Remote
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Xero
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Principal Systems Engineer - Space Vehicle
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BlackSky seeks a Principal Systems Engineer in Tukwila to lead space vehicle architecture, requirements, and verification for advanced satellite systems. Requires 12+ years in spacecraft engineering and strong cross-disciplinary expertise.
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BlackSky
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DER/ BESS Engineer (Staff, Senior, or Principal)
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Join Xcel Energy as a DER/BESS Engineer driving clean energy integration. Lead BESS, microgrid, and DER projects with power system analysis and grid modernization. Requires engineering degree and 2+ years experience.
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Xcelenergy
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DER Interconnection Engineer (Entry, Staff, Senior, or Principal)
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Join Xcel Energy as a DER Interconnection Engineer in the US. Requires an ABET engineering degree, EIT/FE preferred. Lead clean energy projects with growth opportunities and meaningful rewards.
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Xcelenergy
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Principal Mechanical Design Engineer
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Lead mechanical architecture for engine subsystems at Astro Mechanica in San Francisco. Requires 10+ years of hardware design leadership, expert CAD and GD&T skills, plus mentoring ability. Competitive benefits included.
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Astro Mechanica
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Principal Full Stack Engineer, B2B eCommerce
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Lead Fusion's B2B eCommerce platform as Principal Full Stack Engineer in Boston (hybrid). Requires 10+ years, SQL Server, Azure, Terraform, and LLM/AI tooling expertise across Next.js, Python, and GraphQL.
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Fusion Worldwide
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Principal Engineer
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Motorway seeks a Principal Engineer in London to set technical strategy across product areas. Requires 10+ years in software engineering, deep AWS expertise, and strong API/identity architecture skills. Hybrid role with stock options.
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Motorway
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Principal Analog and Mixed Signal Electrical Engineer
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Lead analog and mixed-signal design for next-gen radar platforms in Kirkland. Requires expertise in low-noise receivers, data converters, clocking, power circuits, and signal integrity. Includes RSU and fully-paid medical benefits.
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Echodynecorp
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Principal Software Engineer, Growth
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UiPath seeks a Principal Software Engineer in Bucharest to own growth metrics and activation funnels. Ship full-stack fixes, run A/B tests, and use AI coding agents daily. Strong product sense required.
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UiPath
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Principal Infrastructure Engineer
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Flo seeks a Principal Infrastructure Engineer in London to architect EKS at scale, shape PostgreSQL, DynamoDB and Kafka patterns, and build golden paths. Requires deep Kubernetes, AWS and Terraform expertise.
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Flo Health
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Principal Platform Engineer
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Join Clarity Innovations as a Principal Platform Engineer in Herndon. Lead Kubernetes, GitOps, and CI/CD initiatives with Python, Bash, and Ansible to secure national security missions.
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Clarity Innovations
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Associate Principal Resident Engineer - Americas
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Join Dragos as Associate Principal Resident Engineer - Americas. Leverage 5+ years of ICS/OT cybersecurity and networking expertise to deploy and optimize the Dragos Platform for critical infrastructure clients. Remote-first, up to 25% travel.
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Dragos
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Sr Principal R&D Engineer
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Senior R&D Engineer needed in Nonsan-si, Korea to design and develop battery cells from concept to mass production. Requires expertise in chemical engineering, Li-ion electrochemistry, and cell design or process development.
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South Korea, Nonsan-si
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Enovix
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About the Principal Engineer role

Explore the pinnacle of technical leadership with Principal Engineer jobs. A Principal Engineer is a master-level technical expert and strategic leader within an engineering organization. This is not merely a senior role; it represents the apex of an individual contributor technical track, where influence, architectural vision, and deep expertise converge to shape the technological future of a company. Professionals in these roles are the go-to authorities for the most complex, high-impact challenges, setting technical standards and driving innovation across multiple teams or the entire organization.

The common responsibilities of a Principal Engineer are vast and critical to long-term success. Typically, they involve defining and driving the long-term technical strategy and architectural vision for major platforms or product suites. They are responsible for researching, prototyping, and selecting technologies that will scale to meet future business needs. A core part of their duties includes leading the design and implementation of complex, cross-functional systems, ensuring they are resilient, secure, and efficient. They serve as the ultimate escalation point for critical production issues, conducting deep-dive analysis and root cause investigations to resolve systemic problems. Furthermore, Principal Engineers have a significant mentorship and governance function, actively coaching senior and staff engineers, establishing best practices, and conducting rigorous code and design reviews to maintain exceptional quality across all engineering outputs. They are also key collaborators, working closely with engineering managers, product leaders, and enterprise architects to align technical execution with business objectives.

The typical skills and requirements for these high-level positions are extensive. A bachelor's or master's degree in computer science, engineering, or a related field is common, though equivalent demonstrable experience is often acceptable. Most roles require a minimum of 10+ years of progressive, hands-on software development or infrastructure engineering experience, with a significant portion spent in lead or architecture-focused positions. Essential technical skills include mastery of relevant programming languages and frameworks, profound knowledge of system design patterns and distributed architectures, and expertise in cloud platforms like AWS, Azure, or GCP. They must possess exceptional analytical and problem-solving abilities to deconstruct ambiguous, complex problems. Beyond technical prowess, superior soft skills are non-negotiable; this includes outstanding communication to articulate technical vision to both technical and non-technical stakeholders, proven leadership and influence without formal authority, and strategic business acumen. For those seeking to define technological frontiers and mentor the next generation of experts, Principal Engineer jobs offer a challenging and highly rewarding career path at the forefront of innovation.