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Principal Software Engineer United States, Bellevue Jobs

9 Job Offers

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Principal Software Engineer – Test Automation
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Principal Software Engineer – Test Automation role at Baxter in Bellevue, WA. Drive life-saving medical product quality by designing scalable test automation frameworks using Python, Java, or C/C++. Requires 7+ years SDET experience, expertise in PyTest, Selenium, or Robot Framework, and API test...
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United States , Bellevue
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Salary
112000.00 - 154000.00 USD / Year
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Baxter
Expiration Date
Until further notice
New
Principal Software Engineer – Test Automation
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Principal Software Engineer – Test Automation role in Bellevue, WA. Drive quality for life-saving medical technology at Baxter. Requires 7+ years in SDET, expertise in Python/Java, and frameworks like Selenium or PyTest. Lead test strategies, automation, and API testing with benefits starting day...
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Location
United States , Bellevue
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Salary
112000.00 - 154000.00 USD / Year
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Baxter
Expiration Date
Until further notice
Principal Software Engineer - Tax Technology
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United States , Bellevue
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133500.00 - 240700.00 USD / Year
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T-Mobile
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Until further notice
Principal GenAI Software Engineer
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Lead the architecture and deployment of enterprise-scale GenAI solutions as a Principal Engineer. Design modular AI agents, establish engineering standards, and provide technical leadership. This Bellevue-based role requires 7+ years of experience and offers a competitive compensation package wit...
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United States , Bellevue
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173500.00 - 234700.00 USD / Year
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T-Mobile
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Until further notice
Full Stack Principal Software Engineer, Gen AI
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Lead the design and delivery of scalable, agentic AI platforms integrating LLMs into enterprise systems. This principal role requires 7+ years of experience building secure, cloud-native backend microservices and distributed architectures. You will provide technical leadership, define AI standard...
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United States , Bellevue; Frisco
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133500.00 - 240700.00 USD / Year
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T-Mobile
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Until further notice
Principal Engineer, Software Test
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United States , Bellevue
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Salary
112000.00 - 154000.00 USD / Year
https://www.baxter.com/ Logo
Baxter
Expiration Date
Until further notice
Principal Engineer, Software Test
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Location
United States , Bellevue
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Salary
112000.00 - 154000.00 USD / Year
https://www.baxter.com/ Logo
Baxter
Expiration Date
Until further notice
Principal Software Engineer Manager
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Lead AI-powered cloud reliability initiatives at Microsoft Azure. This Principal Software Engineer Manager role in Bellevue combines deep technical expertise in distributed systems and MLOps with people leadership. You'll design scalable ML infrastructure to autonomously secure and optimize the g...
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United States , Bellevue
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139900.00 - 274800.00 USD / Year
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Microsoft Corporation
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Until further notice
Principal Software Engineer, AI
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Lead AI innovation at Microsoft as a Principal Software Engineer. You will architect and build scalable NL2KQL systems, translating natural language into precise security queries. This role requires strong technical leadership in software engineering and AI, with 6+ years of coding experience. Jo...
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United States , Bellevue
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Salary
139900.00 - 274800.00 USD / Year
https://www.microsoft.com/ Logo
Microsoft Corporation
Expiration Date
Until further notice

About the Principal Software Engineer role

Explore the pinnacle of a technical career with Principal Software Engineer jobs. This senior-level role represents the apex of individual contributor tracks, where technical mastery converges with strategic leadership. A Principal Software Engineer is not just a senior coder; they are the visionary architects and technical pillars of an organization, responsible for setting long-term technological direction and solving the most complex, large-scale challenges. Their work ensures that engineering efforts align with overarching business goals, creating robust, scalable, and future-proof systems.

Professionals in these roles typically shoulder a broad and impactful set of responsibilities. Central to their function is leading the architectural vision for major systems or entire platforms. They define the technical standards, select core technologies, and make critical decisions on system design with a focus on scalability, reliability, security, and performance. A significant part of their day involves deep collaboration, not only mentoring senior and junior engineers but also partnering with product managers, senior management, and other stakeholders to shape the technology roadmap. They are often the go-to experts for de-risking projects, conducting proof-of-concepts for new technologies, and providing technical guidance across multiple teams. Furthermore, they champion engineering excellence by driving initiatives around agile methodologies, CI/CD pipelines, DevOps practices, and robust quality assurance.

The typical skill set for a Principal Software Engineer is extensive and deep. A common requirement is 10+ years of progressive experience in software development, demonstrating a proven track record of designing, delivering, and maintaining complex, consumer-facing or enterprise-level systems. Expertise in modern technology stacks is essential, often including proficiency in languages like Java, Kotlin, C#, Python, or Go, and familiarity with front-end frameworks like React or Angular. A deep, practical understanding of distributed systems, cloud-native architectures (on platforms like AWS, Azure, or GCP), and containerization technologies like Docker and Kubernetes is standard. They are expected to be experts in API design, data modeling, and often, event-driven architectures using tools like Kafka. Beyond pure technical acumen, exceptional soft skills are non-negotiable. This includes superior communication abilities to articulate complex technical concepts to diverse audiences, strong leadership and mentorship capabilities, and outstanding analytical and problem-solving skills. While a Bachelor's degree in Computer Science is common, equivalent industry experience is often highly valued.

Ultimately, Principal Software Engineer jobs are for those who want to leave a lasting imprint on a company's technology. They are the strategic thinkers and technical pioneers who build the foundations upon which products and services thrive, making them one of the most critical and respected roles in the technology industry. If you are ready to guide technical strategy and mentor the next generation of engineers, exploring Principal Software Engineer jobs is your next career step.