Principal Software Engineer Jobs in Philadephia, PA

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Principal Propulsion System Performance Engineer (P4) - Hybrid

RTX Corporation

Remote or East Hartford, Connecticut, USA

Full-time

Date Posted: 2025-06-25 Country: United States of America Location: PW100: East Hartford 400 Main Street, East Hartford, CT, 06118 USA Position Role Type: Hybrid U.S. Citizen, U.S. Person, or Immigration Status Requirements: This job requires a U.S. Person. A U.S. Person is a lawful permanent resident as defined in 8 U.S.C. 1101(a)(20) or who is a protected individual as defined by 8 U.S.C. 1324b(a)(3). U.S. citizens, U.S. nationals, U.S. permanent residents, or individuals granted refugee or a

Principal Communications Engineer

Draper

Remote or Cambridge, Massachusetts, USA

Full-time

Overview: Draper is an independent, nonprofit research and development company headquartered in Cambridge, MA. The 2,000+ employees of Draper tackle important national challenges with a promise of delivering successful and usable solutions. From military defense and space exploration to biomedical engineering, lives often depend on the solutions we provide. Our multidisciplinary teams of engineers and scientists work in a collaborative environment that inspires the cross-fertilization of ideas

Principal, Development Engineer - Remote

Constellation Energy

Remote or Raleigh, North Carolina, USA

Full-time

WHO WE ARE As the nation's largest producer of clean, carbon-free energy, Constellation is focused on our purpose: accelerating the transition to a carbon-free future. We have been the leader in clean energy production for more than a decade, and we are cultivating a workplace where our employees can grow, thrive, and contribute. Our culture and employee experience make it clear: We are powered by passion and purpose. Together, we're creating healthier communities and a cleaner planet, and our

Principal Engineer - Data Protection & Insider Threat (Remote)

United Airlines

Remote or Chicago, Illinois, USA

Full-time

Description Join our Cybersecurity and Digital Risk (CDR) team to help us also lead the airline industry in cyber-safety. United's CDR team is tasked with keeping our customers' and employees' information safe and secure. Our primary mission is to embed cybersecurity into the DNA of United Airlines by reducing business risk through implementation of strong cybersecurity standards. Job overview and responsibilities The Principal Engineer for Data Protection & Insider Threat will play a critical

Principal Engineer, Machine Learning Ops

Harman International

California, USA

Full-time

A Career at HARMAN As a technology leader that is rapidly on the move, HARMAN is filled with people who are focused on making life better. Innovation, inclusivity and teamwork are a part of our DNA. When you add that to the challenges we take on and solve together, you'll discover that at HARMAN you can grow, make a difference and be proud of the work you do every day. About the Role Join our team as a Principal MLOps Engineer and help build the infrastructure and deployment systems for a rev

Lead Engineer, Software Development - DXP

tax.com

Remote or Dallas, Texas, USA

Full-time

Why Ryan? Hybrid Work OptionsAward-Winning CultureGenerous Personal Time Off (PTO) Benefits14-Weeks of 100% Paid Leave for New Parents (Adoption Included)Monthly Gym Membership Reimbursement OR Gym Equipment ReimbursementBenefits Eligibility Effective Day One401K with Employer MatchTuition Reimbursement After One Year of ServiceFertility Assistance ProgramFour-Week Company-Paid Sabbatical Eligibility After Five Years of Service Ryan, LLC is an award-winning global tax firm that liberates its c

Lead Observability Engineer Sumo Logic & SRE Location :Remote

NeoTech Solutions

US

Third Party, Contract

Role : Lead Observability Engineer Sumo Logic & SRE Location : Remote Hire type : Contract JD: Experience: 10+ years (with 3+ years in Sumo Logic & Cloud-native observability) Job Summary: We are seeking a highly skilled Lead Observability Engineer to lead a critical implementation of Sumo Logic for a client migrating from Dynatrace. This role requires deep expertise in Sumo Logic, Site Reliability Engineering (SRE) practices, and Kubernetes (EKS) observability. The ideal candidate will de

(USA) Staff, Software Engineer

Walmart Inc.

Remote or Denver, Colorado, USA

Full-time

Position Summary Are you passionate about blending cloud infrastructure with financial acumen? Join our Walmart/VIZIO Team as a Cloud FinOps Automation Engineer, where you'll leverage your skills to optimize cloud spend, drive automation, and collaborate across teams to align cloud usage with business goals. This is your opportunity to make a significant impact at the intersection of technology and finance. What you'll do About the Team The Walmart/VIZIO Team is dedicated to enhancing cloud i

Principal Substation P&C Engineer

ENTRUST Solutions Group

Remote

Full-time

Join Our Team as a P&C Engineer! Are you passionate about power systems and looking to make a significant impact in the field of protective relaying and control systems? We have an exciting opportunity for you to join our dynamic team! What You'll Do: Stay Ahead: Keep up to date with NERC and NPCC protection and control standards.Innovate: Engineer protective relay and control systems, calculate relay settings, create relay control logic, and analyze relay operations for transmission/distribut

(USA) Staff, Software Engineer

Walmart Inc.

Remote or Dallas, Texas, USA

Full-time

Position Summary Join Walmart|VIZIO and take your career to the next level! VIZIO's Technology - Software and Services team is seeking a Staff Software Engineer to join the HTML5 App platform team. The team maintains and enhances the platform that enables hundreds of 3rd party Apps to run on Vizio TV's, which accounts for the majority of user viewing hours. The Senior Software Engineer will fix bugs, address technical debt and design / implement new features. In this role, you will be a member o

Principal Engineer - Steam Turbine

ENTRUST Solutions Group

Remote or Greenville, South Carolina, USA

Full-time

Join ENTRUST's Power Generation group as a fulltime-Principal Engineer - Steam Turbine focused on supporting steam turbines engineering activities. This position offers remote and hybrid schedule options with minimal travel required. ENTRUST Solutions Group Power Generation offers independent third-party engineering solutions to global power providers and plant operations. Power Generation's service offerings cover conventional and renewable power, as well as compliance, encompassing plant conc

(USA) Staff, Software Engineer

Walmart Inc.

Remote or Seattle, Washington, USA

Full-time

Position Summary Are you a seasoned software engineer looking to make a significant impact? Join Walmart/VIZIO as a Staff Software Engineer in our Content Services team. This is a unique opportunity to work on cutting-edge technology, shape our software solutions, and help drive the future of our digital content. What you'll do About the Team: The Content Services team at Walmart/VIZIO is dedicated to delivering top-tier digital content experiences. We operate with a focus on innovation and sc

Lead Software Engineer (Remote Eligible, U.S.)

GE Vernova

Remote

Full-time

Job Description Summary We are looking for full-stack software engineers with a minimum of 5 years of professional experience responsible for designing, building, delivering and maintaining software applications. The candidate will be responsible for software development lifecycle including activities such as requirement analysis, documentation/procedures and implementation with a flexible work option. Job Description Essential Responsibilities Responsibilities include but not limited to: Col

Principal RF Engineer

Kratos Defense and Security Solutions, Inc.

Remote

Full-time

Job Description Kratos Microwave, Inc., a Kratos' company, is looking for a Principal RF Engineer. Kratos Defense & Security Solutions, Inc. (NASDAQ:KTOS) develops and fields transformative, affordable technology, platforms, and systems for United States National Security related customers, allies, and commercial enterprises. At Kratos, we encourage an entrepreneurial spirit balanced with discipline. We work hard, and take care of our customers, employees and families. Recognized as thought l

Staff Software Engineer, Reservation Management

Airbnb

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: Reservation Management The Reservation Management team is a full-stack product team that is responsible for

Senior Software Engineer - Full Stack (Remote)

Donnelley Financial Solutions

Remote

Full-time

Join a dynamic team at the pulse of global markets, where we deliver innovative software and service solutions for essential financial reporting and capital markets transactions. At DFIN, we are a values-driven organization that empowers you to build a fulfilling career while bringing your authentic self to work every day. Our "Win as One" mentality ensures that our team's success is directly linked to Client, Shareholder and Employee Satisfaction. Recognized by Newsweek as one of AMERICA'S MOST

Staff Software Engineer - Fullstack

ServiceNow, Inc.

Remote or San Diego, California, 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

Principal Kernel Engineer

Request Technology, LLC

Remote

Full-time

Principal Kernel Engineer Salary: Open + Bonus + Stock Options Location: Remote *We are unable to provide sponsorship for this role* Qualifications Writes high-quality multithread-safe code in C++ in both kernel-mode and user-modeDevelops high-quality code in Rust or a strong desire and capacity to learn quickly (Rust)Has shipped at least one production quality driver for Windows NTStrong knowledge of Win32 APIs and NT kernel internalsDebugs memory corruption issues and improves end-to-end syste

Principal Engineer, Project Engineering (CSE) (Hybrid)

RTX Corporation

Remote or Aguadilla, Aguadilla, Puerto Rico

Full-time

Date Posted: 2025-05-30 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

Principal Security Engineer, Threat Intelligence & Investigations

Circles Inc.

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