1,183 Results for

Principal Engineer Jobs in Newcastle, WA

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Principal Software Engineer Microsoft Corp

Redmond, WA

$142,800–$274,800 / year

There is a different range applicable to specific work locations, within the San Francisco Bay area and New York City metropolitan area, and the base pay range for this role in those locations is USD $188,000 - $304,200 per year. This role is ideal for someone who enjoys solving complex distributed-system and product problems, building intuitive and performant user experiences, and collaborating across engineering, product, design, research, and partner teams.

18 days ago

Principal Software Engineer 2 - OLTP Snowflake Inc

Bellevue, WA

$304,000–$437,000 / year

A core part of the role is designing transactional systems for agent-driven workloads, where isolated state, rapid database lifecycle, safe autonomous operations, and deep integration with enterprise data are first-class requirements. Across Snowflake Postgres and Unistore, we are combining the performance, reliability and developer experience expected from modern operational databases with Snowflake''s cloud-native architecture and governed data platform.

26 days ago

Principal Site Reliability Engineer- CTJ- Secret Microsoft Corp

Redmond, WA

$142,800–$274,800 / year

You are expected to lead complex, multi-year initiatives; shape how reliability is designed into systems; and act as a role model for technical excellence, leadership, and Microsoft values, particularly for services operating in regulated, sovereign, or compliance-sensitive environments. There is a different range applicable to specific work locations, within the San Francisco Bay area and New York City metropolitan area, and the base pay range for this role in those locations is USD $188,000 - $304,200 per year.

10 days ago

Principal Software Engineer - HW/SW in Fleet Infrastructure Microsoft Corp

Redmond, WA

$142,800–$274,800 / year

You will work across Microsoft 365, Azure infrastructure, hardware engineering teams, silicon providers, OEM (original equipment manufacturer)/ODM (original design manufacturer) partners, and operations organizations to define architecture, influence platform strategy, and solve complex infrastructure problems at global scale. Partner across Microsoft 365, Azure Hardware Systems, silicon vendors, OEM/ODM partners, firmware teams, and operations organizations to improve platform reliability, scalability, and serviceability.

6 days ago

Senior Principal Engineer, Rovo Experiences & Growth Atlassian Corp

Seattle, WA

Our teams work across Rovo Chat, Rovo Search, Growth, and Rovo Apps & Clients, delivering trusted, consistent AI experiences across web, mobile, desktop, and browser extensions while helping customers make Rovo part of their daily work. Shape the convergence of Search and Chat, creating shared patterns and capabilities that enable users to retrieve information, understand context, continue through multi-step interactions, and take action.

30+ days ago

T-Ads Principal Engineer, Platform T-Mobile US Inc

Bellevue, WA

$136,200–$272,400 / year

Education and Work Experience: Bachelor's Degree plus 7 years of related work experience OR Advanced degree with 5 years of related experience (Required). It involves collaborating with engineers to develop software architectures and components using technologies such as, microservices, public cloud, CI/CD, and infrastructure as code.

20 days ago

Principal Engineer, Model Optimizations DigitalOcean

Seattle, WA

$249,600–$312,000 / year

The Inference Platform team runs frontier open models in production on a heterogeneous GPU fleet, and the gap between a model that merely runs and a model that runs well is measured in millions of dollars of GPU time and in whether a customer's SLO is met. Building the benchmarking and regression infrastructure that makes optimization claims trustworthy: agent-shaped and long-context traffic distributions, TTFT/ITL/throughput measurement, and accuracy validation that runs before anything ships.

24 days ago

Principal Engineer, Cybersecurity - Data Loss Prevention T-Mobile US Inc

Bellevue, WA

$127,800–$230,700 / year

The individual will conduct security assessments, evaluate data protection gaps, and partner with engineering, technology, and business teams to implement scalable controls across mobile devices, cloud services, networks, and enterprise applications. This role is critical to protecting T-Mobile's digital assets by designing, implementing, and strengthening data protection capabilities across software, systems, cloud platforms, endpoints, and infrastructure.

30+ days ago

Principal Applied AI Engineer Microsoft Corp

Redmond, WA

Architect and build production agentic AI systems: Design and implement scalable AI agents and services, including LLM orchestration, multi-agent workflows, RAG pipelines, tool integrations, memory and state management, and human-in-the-loop experiences. Own end-to-end technical delivery: Translate ambiguous customer support scenarios into clear technical requirements and take solutions from architecture and experimentation through implementation, deployment, operation, and continuous improvement.

30+ days ago

Senior and/or Principal Software Engineer- LLM Serving Performance Microsoft Corp

Redmond, WA

$142,800–$274,800 / year

There is a different range applicable to specific work locations, within the San Francisco Bay area and New York City metropolitan area, and the base pay range for this role in those locations is USD $188,000 - $304,200 per year. There is a different range applicable to specific work locations, within the San Francisco Bay area and New York City metropolitan area, and the base pay range for this role in those locations is USD $160,200 - $261,000 per year.

30+ days ago

Principal Engineer, Fluid & Thermal Systems (R4793) Shield AI

Seattle, Washington

Full time

Full-time regular employee offer package: Pay within range listed + Bonus + Benefits + Equity Temporary employee offer package: Pay within range listed above + temporary benefits package (applicable after 60 days of employment) Salary compensation is influenced by a wide array of factors including but not limited to skill set, level of experience, licenses and certifications, and specific work location. As a Staff Fluid & Thermal Systems Engineer at Shield AI, you will lead the design, development, and optimization of fluid and thermal systems for our advanced autonomous UAVs and ground systems.

30+ days ago

Principal Machine Learning Engineer Atlassian Corp

Seattle, WA

You'll remain deeply hands-on while setting direction across teams: driving advances in models, agents, and evaluation and turning them into measurable improvements for millions of active users. Architect and build production ML and evaluation systems that operate at scale, including datasets, simulations, automated judges, regression suites, experimentation platforms, and online quality signals.

30+ days ago

Principal AI Platform Engineer PEMCO Mutual Insurance Company

Seattle, WA

$154,845–$189,255 / year

You own the stack end to end, from GPU compute through model serving, retrieval, and orchestration up to observability and governance, and you are expected to be capable of building and operating it on-premise when the economics justify it, not only consuming managed cloud services. Benefits: Regular part-time PEMCO employees working at least 24 hours per week and regular full-time PEMCO employees are eligible to elect coverage under medical, dental, and vision plans for themselves and their eligible family members with generous employer premium cost shares.

30+ days ago

AI Principal Machine Learning Engineer (10189) Extreme Networks

Seattle, Washington

$170,000–$240,000 / year
Full time

Over 50,000 customers globally trust our end-to-end, cloud-driven networking solutions and rely on our top-rated services and support to accelerate their digital transformation efforts and deliver progress like never before. Take the lead in the end-to-end software development lifecycle, encompassing design, testing, deployment, and operations, lead technical discussions and strategy, and participate hands-on in design reviews, code reviews, and implementation.

30+ days ago

Principal Software Engineer - Microsoft Substrate Data Plane team M365 Copilot App Microsoft Corp

Redmond, WA

$142,800–$274,800 / year

There is a different range applicable to specific work locations, within the San Francisco Bay area and New York City metropolitan area, and the base pay range for this role in those locations is USD $188,000 - $304,200 per year. Required Qualifications: Bachelors Degree in Computer Science or related technical field AND 6+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python.

30+ days ago

Principal ML System Engineer Atlassian Corp

Seattle, WA

You will bring the latest bleeding edge innovations to the product and build agent harnesses that deliver a step function improvement in quality, reliability and latency. The Rovo & AI Engineering org's mission is to make Rovo the fastest, most trusted way for any team to find, understand, and act on their organization's knowledge.

30+ days ago

Principal Machine Learning Engineer - Search & Intelligence Atlassian Corp

Seattle, WA

As a Principal Machine Learning Engineer, you will lead the development and implementation of cutting-edge machine learning algorithms and sophisticated models that power AI capabilities across Atlassian's products and services. A track record of solving ambiguous and complex problems by navigating uncertainty, breaking challenges into manageable components, and developing innovative, practical solutions.

30+ days ago

Principal Software Engineer - AI Infrastructure Microsoft Corp

Redmond, WA

$142,800–$274,800 / year

There is a different range applicable to specific work locations, within the San Francisco Bay area and New York City metropolitan area, and the base pay range for this role in those locations is USD $188,000 - $304,200 per year. Required Qualifications: Bachelors Degree in Computer Science or related technical field AND 6+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python.

27 days ago

Software Development Engineer, AWS GuardDuty Amazon.com Inc

Seattle, WA

We have innovative benefit offerings, and host annual and ongoing learning experiences, including our Conversations on Race and Ethnicity (CORE) and AmazeCon (gender diversity) conferences. Amazon's culture of inclusion is reinforced within our 16 Leadership Principles, which remind team members to seek diverse perspectives, learn and be curious, and earn trust.

30+ days ago

Sr. SDE, EC2 Nitro Networking, EC2 Nitro Networking Amazon.com Inc

Seattle, WA

You will be part of a team that owns the software-defined networking (SDN) dataplane stack that powers EC2 networking across diverse applications such as Machine Learning, Cloud Gaming, Health, Fintech, and Video Streaming. Lead the end-to-end design, scoping, implementation, and integration testing of performance optimizations and dataplane features that run on the EC2 Nitro System that power Machine Learning workloads.

30+ days ago

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Principal Engineer Jobs in Newcastle, WA

Principal Software Engineer Microsoft Corp

Principal Software Engineer 2 - OLTP Snowflake Inc

Principal Site Reliability Engineer- CTJ- Secret Microsoft Corp

Principal Software Engineer - HW/SW in Fleet Infrastructure Microsoft Corp

Senior Principal Engineer, Rovo Experiences & Growth Atlassian Corp

T-Ads Principal Engineer, Platform T-Mobile US Inc

Principal Engineer, Model Optimizations DigitalOcean

Principal Engineer, Cybersecurity - Data Loss Prevention T-Mobile US Inc

Principal Applied AI Engineer Microsoft Corp

Senior and/or Principal Software Engineer- LLM Serving Performance Microsoft Corp

Principal Engineer, Fluid & Thermal Systems (R4793) Shield AI

Principal Machine Learning Engineer Atlassian Corp

Principal AI Platform Engineer PEMCO Mutual Insurance Company

AI Principal Machine Learning Engineer (10189) Extreme Networks

Principal Software Engineer - Microsoft Substrate Data Plane team M365 Copilot App Microsoft Corp

Principal ML System Engineer Atlassian Corp

Principal Machine Learning Engineer - Search & Intelligence Atlassian Corp

Principal Software Engineer - AI Infrastructure Microsoft Corp

Software Development Engineer, AWS GuardDuty Amazon.com Inc

Sr. SDE, EC2 Nitro Networking, EC2 Nitro Networking Amazon.com Inc

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