Principal Software Engineer Jobs in Seattle, WA

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Staff Software Engineer- Network Systems - Federal

ServiceNow, Inc.

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Kirkland, Washington, USA

Full-time

Company Description It all started in sunny San Diego, California in 2004 when a visionary engineer, Fred Luddy, saw the potential to transform how we work. Fast forward to today - ServiceNow stands as a global market leader, bringing innovative AI-enhanced technology to over 8,100 customers, including 85% of the Fortune 500 . Our intelligent cloud-based platform seamlessly connects people, systems, and processes to empower organizations to find smarter, faster, and better ways to work. But thi
Posted 34 days ago | Updated 11 hours ago

Infra & Performance Engineer- Senior Lead Software Engineer

JPMorgan Chase & Co.

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Seattle, Washington, USA

Full-time

Job Description Be an integral part of an agile team that's constantly pushing the envelope to enhance, build, and deliver top-notch technology products. As a Senior Lead Software Engineer at JPMorgan Chase within the Infrastructure Platforms (IP) team, you provide expertise and engineering excellence in the software development life cycle to ensure that applications, hardware, and systems are optimized for performance and user experience. Leverage your advanced technical capabilities and coll
Posted 34 days ago | Updated 11 hours ago

Senior Principal Engineer, Design Engineering

RTX Corporation

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Everett, Washington, USA

Full-time

Date Posted: 2025-06-13 Country: United States of America Location: UTWA1: WA-Corp 11404 Commando Rd , Everett, WA, 98204 USA Position Role Type: Unspecified U.S. Citizen, U.S. Person, or Immigration Status Requirements: Security Clearance: B/E Aerospace, Inc. d/b/a Collins Aerospace has an opening for a Senior Principal Engineer, Design Engineering in Everett, WA. Joining Collins Aerospace isn't just about finding a job; it's about embarking on a journey to redefine the future of aerospace tec
Posted 22 days ago | Updated 10 hours ago

(USA) Distinguished, Software Engineer

Walmart Inc.

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Bellevue, Washington, USA

Full-time

Position Summary What you'll do Join our innovative and dynamic People Technology engineering team as a Principal Software Engineer. In this role, you'll play a crucial part in designing, developing, and implementing digital solutions that address mission-critical business challenges, supporting Walmart associates. Your projects will make a significant impact, be scalable, and drive Walmarts modernization efforts in the People Technology organization. About Team: The Enterprise People Techno
Posted 39 days ago | Updated 11 hours ago

Lead Embedded Software Engineer (Autonomy)

Leidos

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Lynnwood, Washington, USA

Full-time

Description Leidos currently has an opening for a Lead Embedded Software Engineer to provide technical firmware engineering expertise and firmware/embedded project management and coordination supporting the design, development and integration of Uncrewed Underwater Vehicle (UUV) programs that address existing and emerging maritime missions of national importance for a broad range of customers across multiple Department of Defense agencies. This position is located at our Lynnwood, WA office. Pr
Posted 12 days ago | Updated 8 hours ago

Software Development Engineer II, DynamoDB Border Services - Connectivity

Amazon Development Center U.S., Inc.

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Seattle, Washington, USA

Full-time

Do you want to work on new scaling challenges for one of the largest databases on earth? Do you enjoy simplifying complex problems and working on distributed systems? Do you want to work on a product that can access petabytes of data in 9 milliseconds or less, back up hundreds of terabytes of data in seconds, even across continents? DynamoDB is a key-value and document database that delivers single-digit-millisecond performance at any scale. As one of the largest distributed database systems in
Posted 22 days ago | Updated 7 hours ago

Principal Structural Design Engineer - New Glenn

Blue Origin, LLC

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Seattle, Washington, USA

Full-time

Application close date: Applications will be accepted on an ongoing basis until the requisition is closed. At Blue Origin, we envision millions of people living and working in space for the benefit of Earth. We're working to develop reusable, safe, and low-cost space vehicles and systems within a culture of safety, collaboration, and inclusion. Join our team of problem solvers as we add new chapters to the history of spaceflight! This role supports the development and operations of New Glenn, a
Posted 49 days ago | Updated 8 hours ago

Tech Lead Software Engineer, Ads ML Infrastructure

TikTok

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Seattle, Washington, USA

Full-time

Location : Seattle Employment Type : Regular Job Code : A129197 Apply to this job Share this listing: Responsibilities The ads system at TikTok operates on a massive scale and serves millions of advertisers, clients and influencers across the world. The quality of the ads system highly depends on the ability to handle massive data, and machine learning is widely used to improve the quality of our ads. The Ads machine learning data platform team is responsible for building highly efficient
Posted 60+ days ago | Updated 10 hours ago

Senior Staff Software Engineer - Data Products

Rippling

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Seattle, Washington, USA

Full-time

About Rippling Rippling gives businesses one place to run HR, IT, and Finance. It brings together all of the workforce systems that are normally scattered across a company, like payroll, expenses, benefits, and computers. For the first time ever, you can manage and automate every part of the employee lifecycle in a single system. Take onboarding, for example. With Rippling, you can hire a new employee anywhere in the world and set up their payroll, corporate card, computer, benefits, and even
Posted 56 days ago | Updated 11 hours ago

Sr. Software Engineer, EC2 VPC

Amazon Development Center U.S., Inc.

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Seattle, Washington, USA

Full-time

We're at an exciting juncture to redefine the future of EC2 networking for Cloud Computing in 2025. To achieve our ambitious goals, we're expanding our team and looking for a Senior Engineer to lead the development of a new EC2 Service critical to scale our current and next-generation Machine Learning (ML) and HPC Platforms. You will also be a technical leader for a team that owns the software-defined networking (SDN) dataplane stack that powers EC2 networking across diverse industries such as M
Posted 57 days ago | Updated 20 hours ago

Lead Software Engineer - Backend (Hybrid/Onsite)

Visa Inc.

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Remote or Bellevue, Washington, USA

Full-time

Company Description Visa is a world leader in payments and technology, with over 259 billion payments transactions flowing safely between consumers, merchants, financial institutions, and government entities in more than 200 countries and territories each year. Our mission is to connect the world through the most innovative, convenient, reliable, and secure payments network, enabling individuals, businesses, and economies to thrive while driven by a common purpose - to uplift everyone, everywhe
Posted 8 days ago | Updated 11 hours ago

Sr. Software Engineer, EC2 VPC

Amazon Development Center U.S., Inc.

•

Seattle, Washington, USA

Full-time

We're at an exciting juncture to redefine the future of EC2 networking for Cloud Computing in 2025. To achieve our ambitious goals, we're expanding our team and looking for a Senior Engineer to lead the development of a new EC2 Service critical to scale our current and next-generation Machine Learning (ML) and HPC Platforms. You will also be a technical leader for a team that owns the software-defined networking (SDN) dataplane stack that powers EC2 networking across diverse industries such as M
Posted 57 days ago | Updated 1 hour ago

Tech Lead Software Engineer, TikTok Ads Creative & Ecosystem

TikTok

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Seattle, Washington, USA

Full-time

Location : Seattle Employment Type : Regular Job Code : V9893 Apply to this job Share this listing: Responsibilities TikTok is the leading destination for short-form mobile video. Our mission is to inspire creativity and bring joy. TikTok has global offices including Los Angeles, New York, London, Paris, Berlin, Dubai, Singapore, Jakarta, Seoul and Tokyo. Why Join Us Creation is the core of TikTok's purpose. Our platform is built to help imaginations thrive. This is doubly true of the tea
Posted 60+ days ago | Updated 10 hours ago

Principal Data Science ML Engineer - Hybrid - Seattle

Nordstrom

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Remote or Seattle, Washington, USA

Full-time

Job Description As a Principal Machine Learning Engineers at Nordstrom you will have the opportunity to develop and implement advanced machine learning systems and infrastructure, focusing on Merchandising, Supply Chain, and Inventory helping Nordstrom optimize profit while improving the customer experience. The Principal ML Engineer will collaborate closely with data scientists, software engineers, and product teams to translate complex business problems into production-ready solutions. You wi
Posted 60+ days ago | Updated 11 hours ago

Principal SAP Engineer

Montek System

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Remote

Contract

Principal SAP Engineer Location: Columbus, OH or Merrillville, IN THEY CAN WORK MOSTLY REMOTE TILL THEY GO FTE IN 6 MOUNTS Overview: This is a senior technical leadership role responsible for delivering and continuously improving SAP solutions that support key platforms such as Work Asset Management (WAM), Finance, and HR. The role blends architecture, hands-on development, and cross-team collaboration. Key Responsibilities: Lead SAP S/4HANA and ECC implementations, including BASIS, ABAP, and G
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Posted 6 hours ago

Sr Staff Software Engineer, Storage & Caching

Pinterest, Inc.

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Remote or Seattle, Washington, USA

Full-time

About Pinterest: Millions of people around the world come to our platform to find creative ideas, dream about new possibilities and plan for memories that will last a lifetime. At Pinterest, we're on a mission to bring everyone the inspiration to create a life they love, and that starts with the people behind the product. Discover a career where you ignite innovation for millions, transform passion into growth opportunities, celebrate each other's unique experiences and embrace the flexibility
Posted 58 days ago | Updated 11 hours ago

Staff Software Engineer (Web Frontend) - Mobility Verticals

Uber Corporate

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Seattle, Washington, USA

Full-time

About the Role The Mobility Verticals team at Uber owns the biggest verticals in Uber's rides business such as Airports and Reserve. These verticals each contribute billions of dollars to Uber's business. The team also innovates and launches new vertical products, aiming to find the next 1-billion business for Uber. Our engineers work on the latest business opportunities, create innovative solutions, and pioneer new products for Uber's Go-Get mission. If you're interested in working on somethi
Posted 4 days ago | Updated 11 hours ago

Staff Software Engineer - Delivery Marketplace

Uber Corporate

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Seattle, Washington, USA

Full-time

About the Role The Marketplace Simulation team - part of Uber's Delivery Marketplace organization - builds the systems and tools that power high-fidelity simulations of participants and dynamics across the Uber platform. Our work is critical to some of the most important services in the Uber stack, touching everything from infrastructure scalability to machine learning models that replicate real-world user behavior. We are looking for a Staff Software Engineer to join our growing team in Uber'
Posted 60+ days ago | Updated 11 hours ago

Software Engineer V / Sr. Principal Engineer

Medifast, Inc.

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Remote or Baltimore, Maryland, USA

Full-time

About the Opportunity At Medifast, our team members are relentless in our mission of driving Lifelong Transformation, Making a Healthy Lifestyle Second Nature . When you join Medifast, you become part of a dynamic, fast-growing community of highly motivated, like-hearted people who share a passion for promoting health and wellness. Just as OPTAVIA Coaches inspire Clients to reach their personal wellness goals, at Medifast, we inspire each other to bring our best to work each day to further our s
Posted 33 days ago | Updated 8 hours ago

Principal Cybersecurity Engineer

NuLeap

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Remote or US

Third Party

Job Summary (List Format): - Lead the design and implementation of secure, scalable, and high-performance cloud-based systems. - Architect and develop backend systems using Rust (Tokio, Actix, Axum, Rocket) and Scala (Akka, ZIO, Cats, Play). - Ensure secure execution environments utilizing WebAssembly (WASM). - Employ extensive AWS services (Lambda, ECS, S3, API Gateway, CloudFront, DynamoDB, GuardDuty, WAF, Security Hub, KMS) for cloud infrastructure and security. - Implement and enforce AP
Posted 36 days ago | Updated 2 days ago