Principal Developer Jobs in Seattle, WA

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Staff Software Engineer, Control

PsiQuantum

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Remote or Palo Alto, California, USA

Full-time

Quantum computing holds the promise of humanity's mastery over the natural world, but only if we can build a real quantum computer. PsiQuantum is on a mission to build the first real, useful quantum computers, capable of delivering the world-changing applications that the technology has long promised. We know that means we will need to build a system with roughly 1 million qubits that supports fault tolerant error correction within a scalable architecture, and a data center footprint. By harnes
Posted 60+ days ago | Updated 9 hours ago

Lead AI Engineer

St. Jude Childrens Research Hospital

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Tennessee, USA

Full-time

Overview St. Jude is where those with a passion for making a difference come to break new ground. Located in Memphis, Tennessee, the mission of St. Jude Children's Research Hospital is to advance cures, and means of prevention, for pediatric catastrophic diseases through research and treatment. We are leading the way the world understands, treats and defeats childhood cancer and other life-threatening diseases. We are looking for a Lead AI Engineer to join our Analytics Services team in support
Posted 8 days ago | Updated 9 hours ago

EDI Architect

York Solutions, LLC

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Remote

Contract

Required Technical Skills Experience with cloud-native architecture. Golang, Python AWS, Terraform, Kubernetes in federated mode. Experience with compliance standards (HIPAA, SOC, PII) is beneficial. Nice to have: distributed systems and Rust tech stack. Desired Candidate Traits High level of autonomy and self-direction. Collaborative mindset while being able to take ownership. Comfortable operating with vague requirements. Experience in multi-faceted enterprise environments preferred. We are
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Posted 4 days ago | Updated 15 hours ago

Windows Kernel Developer (C++)

Request Technology, LLC

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Remote

Full-time

NO SPONSORSHIP Principal Kernel Engineer SALARY: $235,000 - $275,000 plus 10% bonus and pre-IPO stock LOCATION: remote You will focus on stopping ransomware. New features, bug fixes, performance enhancements, write high quality multithread. Safe code c++ in both Kernal mode win32 APIs and NT Kernal internals reverse engineering windows mini-filter drivers windows filter platform call out drivers SQL databricks rust c++ We deliver an anti-ransomware solution that breaks new ground as to what an a
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Posted 60+ days ago | Updated 1 day ago

Field Engineer II

Panasonic

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Mukilteo, Washington, USA

Full-time

Overview Who we are: Ever wonder who brings the entertainment to your flights? Panasonic Avionics Corporation is #1 in the industry for delivering inflight products such as movies, games, WiFi, and now Bluetooth headphone connectivity! How exciting would it be to be a part of the innovation that goes into creating technology that delights millions of people in an industry that's here to stay! With our company's history spanning over 40 years, you will have stability, career growth opportunities
Posted 5 days ago | Updated 9 hours ago

DPHM ADEM Modeling Lead, Principal Engineer (Hybrid)

RTX Corporation

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Remote or Aguadilla, Aguadilla, Puerto Rico

Full-time

Date Posted: 2025-07-29 Country: United States of America Location: PW222: PW Puerto Rico Road 110 North Km28.8 San Antonio Industrial Park, Aguadilla, PR, 00603 USA Position Role Type: Hybrid U.S. Citizen, U.S. Person, or Immigration Status Requirements: Security Clearance: None/Not Required Pratt & Whitney is working to once again transform the future of flight-designing, building and servicing engines unlike any the world has ever seen. And because transformation begins from within, we're s
Posted 4 days ago | Updated 9 hours ago

Lead Actimize developer

Sharpedge Solutions

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Remote

Full-time

Position: Lead Actimize developer Location: Remote JD: Must Have: 5+ years of development experience in Actimize IFM Solutions Experience in developing customized AIS and RCM Components.Good Knowledge and understanding of the RCM Objects.Proficiency in development of custom profiles, AIS/RCM Plugins.Implementation experience of ActOne and IFM-X install, configure and code with in Actimize modules comprising of the Microsoft SQL.Experience in Solution upgrades and profile migrations.Good understa
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Posted 4 days ago

Lead Systems and Tools Engineer

Boeing Company

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Seattle, Washington, USA

Full-time

Lead Systems and Tools Engineer Company: The Boeing Company The Engineering Test & Technology (ET&T) organization is seeking a Lead Systems and Tools Engineer to join our Supply Chain System & Tools team in Seattle, WA. ET&T Supply Chain leads the strategy and execution of procurement for ET&T. The largest internal customers are Boeing Test & Evaluation (BT&E) and Boeing Research & Technology (BR&T). ET&T Supply Chain System & Tools is responsible for developing the strategy and requirements f
Posted 11 days ago | Updated 9 hours ago

Principal Software Engineer - ITSI

Splunk Inc.

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Remote or San Jose, California, USA

Full-time

Description Splunk, a Cisco company, is building a safer and more resilient digital world with an end-to-end full stack platform made for a hybrid, multi-cloud world. Leading enterprises use our unified security and observability platform to keep their digital systems secure and reliable. Our customers love our technology, but it's our caring employees that make Splunk stand out as an amazing career destination. No matter where in the world or what level of the organization, we approach our wor
Posted 60+ days ago | Updated 9 hours ago

Principal Software Engineer - Remote

First-Citizens Bank & Trust Company

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Remote or California, USA

Full-time

Overview This is a remote role that may only be hired in the following location(s): AZ or CA This position provides expert technical guidance on large, complex, and strategic projects with significant impact. Facilitates the creation and implementation of software systems and software development. Consults and provides subject matter expertise on software evaluations, feasibility studies, and new technologies. Specializes in software development and integration with third party solutions, as a
Posted 60+ days ago | Updated 6 hours ago

Principal Software Engineer - Remote

First-Citizens Bank & Trust Company

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Remote or Phoenix, Arizona, USA

Full-time

Overview This is a remote role that may only be hired in the following location(s): AZ or CA This position provides expert technical guidance on large, complex, and strategic projects with significant impact. Facilitates the creation and implementation of software systems and software development. Consults and provides subject matter expertise on software evaluations, feasibility studies, and new technologies. Specializes in software development and integration with third party solutions, as a
Posted 60+ days ago | Updated 6 hours ago

Principal Software Engineer - Remote

First-Citizens Bank & Trust Company

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Remote or Phoenix, Arizona, USA

Full-time

Overview This is a remote role that may only be hired in the following location(s): AZ or CA This position provides expert technical guidance on large, complex, and strategic projects with significant impact. Facilitates the creation and implementation of software systems and software development. Consults and provides subject matter expertise on software evaluations, feasibility studies, and new technologies. Specializes in software development and integration with third party solutions, as a
Posted 60+ days ago | Updated 6 hours ago

Full Stack Lead Software Engineer- Voice & Chat

KeyCorp

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Remote

Full-time

Location: For Those Who Work At Home, Ohio Job Description- Join the Voice & Chat Automation / Contact Center Delivery group as Technical Lead - full stack. Be part of a team that is working on a major modernization effort, revolving around exciting new technologies, like Google Cloud, Dialogflow, AI, UJET, and NICE. The Tech Lead will be responsible for leading building Intelligent Bots and associated components for the KeyBank Bot Squad. We are looking for an experienced Tech Lead to join ou
Posted 42 days ago | Updated 9 hours ago

Lead Software Engineer - Full Stack

Guardian Life Insurance Company

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Remote or New York, New York, USA

Full-time

Overview We are seeking a highly motivated Senior Software Engineer to join our team. In this role, you will work on deploying and managing applications on AWS and other cloud platforms, using various software frameworks such as Java, Node.js, Angular, React, and .NET. This position requires technical knowledge on AWS, SDLC concepts and will work independently with application development teams, business leaders, data and technical management to develop both architecture framework, and deliver s
Posted 60+ days ago | Updated 9 hours ago

(USA) Senior, Software Engineer - Unified Payments Platform

Walmart Inc.

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Remote or Bentonville, Arkansas, USA

Full-time

Position Summary What you'll do About the Team: The Unified Payments team is building a next-generation platform to handle all payment processing across Walmart's physical and digital channels.The platform is being re-architected from a legacy mainframe to a modern, cloud-native solution. Senior Software Engineer, you'll play a critical role in designing, developing, and delivering scalable solutions for Walmart's Unified Payments Platform. You'll work closely with Staff Engineers and cross-fu
Posted 2 days ago | Updated 9 hours ago

Senior Staff Software Engineer, Hotels

Airbnb

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Remote

Full-time

Airbnb was born in 2007 when two hosts welcomed three guests to their San Francisco home, and has since grown to over 5 million hosts who have welcomed over 2 billion guest arrivals in almost every country across the globe. Every day, hosts offer unique stays and experiences that make it possible for guests to connect with communities in a more authentic way. The Community You Will Join: The Airbnb Hotels organization, which includes HotelTonight, is a fun, entrepreneurial, start-up team where
Posted 60+ days ago | Updated 9 hours ago

Staff Software Engineer - DevEx Platform

Circles Inc.

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Remote or San Francisco, California, USA

Full-time

Circle is a financial technology company at the epicenter of the emerging internet of money, where value can finally travel like other digital data - globally, nearly instantly and less expensively than legacy settlement systems. This ground-breaking new internet layer opens up previously unimaginable possibilities for payments, commerce and markets that can help raise global economic prosperity and enhance inclusion. Our infrastructure - including USDC, a blockchain-based dollar - helps busines
Posted 60+ days ago | Updated 9 hours ago

Principal Engineer - Thermal Engineering

Amgen Inc

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Remote or Thousand Oaks, California, USA

Full-time

Career Category Engineering Job Description Join Amgen's Mission of Serving Patients At Amgen, if you feel like you're part of something bigger, it's because you are. Our shared mission-to serve patients living with serious illnesses-drives all that we do. Since 1980, we've helped pioneer the world of biotech in our fight against the world's toughest diseases. With our focus on four therapeutic areas -Oncology, Inflammation, General Medicine, and Rare Disease- we reach millions of patients ea
Posted 60+ days ago | Updated 9 hours ago

Lead Palantir Developer

Enfycon Inc

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Remote

Full-time, Third Party

Required Qualifications: 12+ years of overall software engineering experience.8+ years of hands-on experience with Palantir Foundry and Gotham.Strong experience in Java using springboot (backend).4+ years of experience building data dashboards using Plotly Dash.Solid understanding of data structures, ETL processes, and SQL.Experience with Git, CI/CD tools, and agile development methodologies.Excellent communication, leadership, and problem-solving skills.Education and Certificate: Bachelor s o
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Posted 1 day ago

Staff Frontend Engineer

Stripe

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Remote or New York, New York, USA

Full-time

Who we are About Privy Our mission is to make privacy and user ownership the default online. We build simple, flexible developer tooling that make it easy to build products that put users first. By leveraging modern cryptography, we shift the status quo around digital ownership and protect the accounts and assets of millions of users. Engineering at Privy is not just about writing world-class code. We create software that turns complex technical systems into delightful developer tools. We asse
Posted 1 day ago | Updated 9 hours ago