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Principal Engineer Jobs

1765 Job Offers

Principal Software Engineer - Fintech Platform (m/f/n)
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Lead the architecture of InPost's new fintech platform as Principal Software Engineer in Warsaw or Cracow. Requires 10+ years in engineering, distributed payments expertise, and hands-on agentic AI experience.
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Poland, Warsaw/Cracow
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Mondial Relay
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Principal Mechanical Engineer
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Lead mechanical design on major UK water and wastewater projects with Egis in London, Bristol or Manchester. Hybrid working, rapid progression and a high-growth environment await experienced chartered engineers.
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Egis Group
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Senior Principal Engineer, Silicon Photonics Architect
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Renesas seeks a Senior Principal Engineer, Silicon Photonics Architect in Hyderabad. Requires 15+ years in silicon photonics, PIC/EIC architecture, and optical transceiver programs. Lead cutting-edge integrated photonics innovation.
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Renesas Electronics
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Principal Engineer , DFT
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Lead SoC DFT architecture and test strategy at Renesas in Hyderabad. Requires 15+ years of hands-on DFT experience with Scan, ATPG, MBIST, and JTAG across multiple SoC tape-outs.
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Renesas Electronics
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Principal Test & Characterization Engineer — Advanced Photonic and Semiconductor Systems
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Lead advanced photonic and semiconductor characterization at WD in Ulm. Build automated optical and electro-optical test platforms using Python, apply AI/ML to experimental data, and shape the future of data infrastructure.
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Western Digital
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Principal Process Engineer — Advanced Semiconductor Device Development
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Lead semiconductor process development in Ulm, driving wafer fabrication and integration across lithography, etch, deposition and metallization. Requires 5+ years cleanroom experience and a BS/MS/PhD in a related field.
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Western Digital
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Principal Electrical Engineer
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Lead electrical/EICA design on UK water and wastewater projects at Egis in London, Bristol or Manchester. Requires chartered status, 7-10+ years' experience and multidisciplinary technical leadership. Hybrid working with fast progression.
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Egis Group
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Principal Mechanical Engineer
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Lead mechanical design on major UK water and wastewater projects with Egis in Manchester. Requires Chartered status, 7-10+ years' design experience and proven technical leadership. Hybrid working with fast progression.
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Egis Group
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Principal Electrical Engineer
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Lead electrical/EICA design on UK water and wastewater projects with Egis in Manchester. Requires chartered status, 7-10+ years' experience and strong UK water standards knowledge. Hybrid working with fast progression.
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Egis Group
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Principal ELV Engineer
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Egis seeks a Principal ELV Engineer in Bengaluru to lead complex building automation, fire alarm, security and telecom systems. Requires 10+ years' ELV experience, PE license preferred, and strong BIM and team leadership skills.
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Egis Group
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Principal Hardware Engineer: High Speed Mixed Signal Designer
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Lead high-speed mixed-signal hardware design for quantum computers at Atom Computing in Boulder, CO. Requires 10+ years in board-level analog/digital design, FPGA expertise, and mentoring skills.
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180000.00 - 220000.00 USD / Year
Atom Computing
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Principal Opto-Mechanical Engineer
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Lead opto-mechanical design for quantum computing systems in Boulder. Requires 10+ years opto-mechanical experience, SolidWorks mastery, FEA expertise, and proven leadership in complex system development.
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170000.00 - 200000.00 USD / Year
Atom Computing
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416 - Principal Software Engineer
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ARSIEM seeks a Principal Full-Stack Developer in Ft. Meade to drive Tradecraft Evolution. Requires Python, Java, R, AWS, and MLOps expertise with SIGINT and NiFi knowledge preferred.
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United States, Ft. Meade
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216000.00 - 241000.00 USD / Year
ARSIEM Corporation
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Principal AI Engineer
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Lead AI/ML innovation as Principal AI Engineer in Athens. Architect scalable GenAI and ML solutions, advise C-level clients, and mentor engineering teams. Requires 8+ years of AI/ML experience and strong leadership skills.
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Netcompany
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Principal Mechanical Engineer
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Assystem seeks a Principal Mechanical Engineer in Whitehaven to lead requirements capture and mentor Senior Engineers. Requires HNC, strong BS8888/ISO-GPS knowledge, FMEA experience, and expertise in design and fabrication.
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ASSYSTEM
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Principal Mechanical Engineer
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Assystem seeks a Principal Mechanical Engineer in Warrington to lead requirements capture and engineering activities for nuclear waste containers. Requires HNC minimum, BS8888/ISO-GPS expertise, FMEA knowledge, and strong stakeholder management skills.
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ASSYSTEM
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Principal Civil Engineer – Renewables & Transmission & Distribution
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Lead civil engineering role in Birmingham focused on renewables and UK transmission & distribution projects (11kV-400kV). Requires BEng, chartership progress, and strong technical design skills. Mentor junior staff and coordinate multidisciplinary teams.
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AECOM
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Principal Civil Engineer – Renewables & Transmission & Distribution
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Lead civil engineering role in Manchester focusing on renewables and UK transmission & distribution projects (11kV-400kV). Requires BEng, chartership progress, and expertise in civil/structural design for energy transition infrastructure.
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AECOM
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Principal Civil Engineer – Renewables & Transmission & Distribution
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Lead civil engineering role in Belfast focusing on renewables and UK transmission & distribution projects (11kV-400kV). Requires BEng, chartership progress, and expertise in civil/structural design for energy transition infrastructure.
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AECOM
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Principal Civil Engineer – Renewables & Transmission & Distribution
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AECOM seeks a Principal Civil Engineer in Dublin to lead civil infrastructure design for renewables and T&D projects. Requires BEng, chartership progress, and UK transmission experience.
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AECOM
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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.