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Principal Engineer Jobs

1667 Job Offers

Principal Software Engineer - CoreAI
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Lead the future of AI-powered software testing as a Principal Software Engineer on Microsoft's Playwright team. Design and implement AI-native capabilities for the core automation framework, integrating with GitHub and VS Code. This Redmond-based role requires deep expertise in AI/LLM models, bro...
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United States , Redmond
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139900.00 - 274800.00 USD / Year
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Microsoft Corporation
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Principal Rust Engineer
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Lead the development of a secure DeFi yield generation platform as a Principal Rust Engineer. Design low-latency trading systems and mentor engineers using modern practices like CI/CD. This role offers a competitive benefits package and is based in Jersey City, Merrimack, or Westlake.
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United States , Jersey City; Merrimack; Westlake
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107000.00 - 216000.00 USD / Year
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Fidelity Investments
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Principal Software Engineer
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Lead the design of multi-tenant enterprise platforms for Microsoft's Dynamics 365 suite in Redmond. This principal role requires 6+ years of coding expertise in C#, Java, or Python. Drive product improvements and automate solutions within a leading SaaS environment, collaborating on innovative bu...
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United States , Redmond
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139900.00 - 274800.00 USD / Year
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Microsoft Corporation
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Principal Site Reliability Engineer
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Join Fidelity as a Principal Site Reliability Engineer in Westlake or Merrimack. You will define reliability strategy and build highly resilient, automated cloud platforms at scale. We seek an expert in AWS, Kubernetes, and Python to reduce toil and coach teams on best practices.
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United States , Westlake; Merrimack
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Not provided
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Fidelity Investments
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Principal Software Engineer - CoreAI
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Lead the future of AI-powered search as a Principal Software Engineer at Microsoft Azure AI in Redmond. Shape end-to-end developer experiences for Azure AI Search, turning ambiguous needs into scalable, reliable features. Leverage 6+ years of cloud service expertise and technical leadership to dr...
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United States , Redmond
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139900.00 - 274800.00 USD / Year
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Microsoft Corporation
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Cleared Senior/ Principal Computing Infrastructure Engineer
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Seeking a Cleared Senior/Principal Computing Infrastructure Engineer in Albuquerque. Perform full lifecycle management of servers, storage, and cloud systems. Requires a DOE Q clearance, expertise in Linux/Windows, scripting (Python), and tools like Ansible. Enjoy impactful work, a 9/80 schedule,...
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United States , Albuquerque
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87400.00 - 199700.00 USD / Year
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Sandia National Laboratories
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Cleared senior principal lead r&d mechanical systems engineer
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Lead the mechanical systems design for critical national security flight test programs. This senior role requires an active DOE Q or DoD TS clearance and a background in R&D mechanical engineering. You will guide teams through design, assembly, and testing in a collaborative environment. The posi...
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United States , Livermore
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139900.00 - 280600.00 USD / Year
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Sandia National Laboratories
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Principal Radar Modeling Engineer
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Seeking a Principal Radar Modeling Engineer in Columbia, MD. This role requires a US Citizen with an active Secret clearance, a technical degree, and 20+ years of sensor systems experience. You will lead simulation development for Navy/MDA programs using MATLAB/Python, offering competitive benefi...
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United States , Columbia
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170000.00 - 190000.00 USD / Year
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Astrion
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Principal Physical Design Engineer
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Join Microsoft's Silicon team as a Principal Physical Design Engineer. Lead physical design convergence and methodology for cloud infrastructure ASICs in Mountain View. This role requires extensive experience in PnR, timing closure, and tapeouts of complex designs. Utilize your expertise with EDA...
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United States , Mountain View
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139900.00 - 274800.00 USD / Year
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Microsoft Corporation
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Principal Site Reliability Engineer
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Join Fidelity Investments in Merrimack, NH as a Principal Site Reliability Engineer. You will ensure system reliability and efficiency, spearheading projects for FFIO Market Data Services. This role requires deep SRE expertise in AWS, EKS, automation, and observability tools like DataDog. Collabo...
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United States , Merrimack, NH
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Fidelity Investments
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Principal Engineer
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Seeking a Principal Engineer in Bangalore for a hybrid role. Lead organization-wide software architecture and innovation with 15+ years' experience. Develop cutting-edge solutions in a global edge-to-cloud environment. Enjoy a culture focused on health, inclusion, and professional growth.
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India , Bangalore
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Hewlett Packard Enterprise
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Principal Software Engineer
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Lead the design of cutting-edge networking solutions for Azure data centers as a Principal Software Engineer in Bangalore. You will develop high-performance packet forwarding and control plane software on DPUs, leveraging 10+ years of C programming and L3/L4 data plane expertise. This role offers...
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India , Bangalore
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Not provided
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Microsoft Corporation
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Principal Software Engineer
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Lead the development of Azure Container Apps as a Principal Software Engineer in Shanghai. This role requires 8+ years of coding experience (C#, Java, Python, etc.) and 5+ years in technical leadership. You will design high-quality, scalable systems and set engineering standards for a globally im...
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China , Shanghai
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Microsoft Corporation
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Principal Software Engineer
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Lead the development of Azure's foundational storage service, impacting billions globally. This principal role requires 10+ years of experience in C/C++/C# and distributed systems. Drive high-impact projects, mentor teams, and shape the future of hyperscale cloud storage from India.
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India , Multiple Locations
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Microsoft Corporation
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Principal DDI and Automation Network Engineer
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Seeking a Principal DDI and Automation Engineer to manage our hybrid Infoblox and BIND infrastructure. You will design, automate with Python/Ansible, and resolve complex issues. This senior role requires 4-6 years of network/DDI experience and offers a collaborative team environment in the US.
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United States , Westlake; Durham; Merrimack
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Fidelity Investments
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Principal Software Engineer
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Join Fidelity's Asset Management Technology group in Galway as a Principal Software Engineer. Lead a new delivery team, designing and deploying AWS-based applications for Strategic Advisors. Utilize your 10+ years of Java, SpringBoot, and Angular expertise in an agile environment. Drive engineeri...
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Ireland , Galway
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Fidelity Investments
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Principal Project Engineer
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Lead technical capital projects in a cGMP biopharmaceutical environment. This Rockville-based role requires 10+ years' experience in facility design, equipment specification, and full project lifecycle management. Expertise in upstream/downstream processing and Delta V is essential. We offer a co...
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United States , Rockville
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Salary
136125.00 - 226875.00 USD / Year
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GSK
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Principal Trading Engineer (Java, Algo, SOR)
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Principal Trading Engineer (Java, Algo, SOR) sought for a hands-on role in Jersey City, NJ. You will design and build ultra-low latency trading systems for crypto, leveraging modern Java, kernel bypass, and messaging like Aeron. Join Fidelity’s Agile team to develop high-performance algorithms an...
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United States , Jersey City
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Salary
126000.00 - 255000.00 USD / Year
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Fidelity Investments
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Principal Full Stack Software Engineer
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Principal Full Stack Software Engineer sought for Fixed Income Technology’s Trading Services team in Merrimack, NH. You will design and develop scalable solutions using Java, SpringBoot, Angular, and Kafka while collaborating with UX and architecture teams. This role requires 10+ years of experie...
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United States , Merrimack
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Not provided
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Fidelity Investments
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Principal Pipeline Welding Engineer
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Seeking a Principal Pipeline Welding Engineer in Dubai to lead complex subsea welding projects. This specialist role requires 8+ years in Welding, Metallurgy, and Materials, with an MS/ME or BE/BTech. You will guide welding engineering, qualify weld procedures, and select electrodes for onshore/o...
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United Arab Emirates , Dubai
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Not provided
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McDermott
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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.