548 matching jobs for “Principal Software Engineer”

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GE Vernova

Software Engineer

Chennai, Tamil Nadu, India

Summary Job Description Software Engineer will be responsible for designing, developing, and maintaining software solutions that leverage …

Added Nov 5, 2026

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Fidelity National Information Services

Principal Software Engineer, Platform Adoption and Migration

US FL JAX 347

… and onto the new platform, and the technical relationship with every team that depends on it. As a principal engineer, you will plan and drive large-scale migrations, retire legacy technology and its cost, and turn …

Added Nov 3, 2026

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Palo Alto Networks

Principal Software Engineer - Secure AI Agent (Hybrid)

Office - Bulgaria - Sofia

… control, secrets management, and agent and user identity tailored to the modern agent ecosystem. As a Principal Engineer, you’ll take ownership of these critical systems, designing and implementing how agents establish …

Added Oct 27, 2026

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Palo Alto Networks

Principal Engineer Software - Front End (Prisma AIRS)

Office - USA - CA - Headquarters

… powerful AI security capabilities accessible, actionable, and intuitive for enterprise users. The Role As a Principal/Sr. Staff Frontend Engineer on the AIRS team, you will operate at the intersection of UX, cloud security, …

Added Oct 27, 2026

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Nvidia

Principal Software Engineer - Rack Scale Systems Infrastructure

Santa Clara, California, United States +4 locations

… their best work. Come join the team and see how you can make a lasting impact on the world. At NVIDIA, as a Principal Rack Scale Systems Infrastructure Engineer, you will build and guide the development of software systems. …

Added Oct 27, 2026

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Comcast

Principal Engineer, Xfinity Mobile Systems & Software Architecture

Philadelphia, Pennsylvania, United States

Full time
Regular

Added Oct 22, 2026

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General Motors

Staff / Principal Software Engineer, In-Vehicle AI Experiences

Mountain View, California, United States

Hybrid
Full time
Regular

Pay posted by employer$189,300–$290,000

… Our mandate is simple: own what the driver can do and how it feels. We are seeking hands-on Staff and Principal Software Engineers who can turn ambiguous customer problems into high-quality, production-ready …

Added Oct 12, 2026

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Palo Alto Networks

Principal Engineer Software (Prisma AIRS Core Services Backend)

Office - USA - CA - Headquarters

… security posture from development through runtime. We are looking for a highly skilled and experienced Principal Software Engineer to join the Prisma AIRS shared services team, specifically focused on platform applications. In this role, …

Added Oct 27, 2026

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RTX

Principal Software Engineer - Section and Technical Lead

McKinney, Texas, United States

… secure world. Join us and help shape the future of aerospace and defense. We are seeking an experienced principal ‑ level software technical leader with deep knowledge of real‑time embedded systems, advanced algorithms, …

Added Oct 27, 2026

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Workday

Principal Forward Deployed Engineer (FDE), Software Development

Dublin, Leinster, Ireland

Flex
Full time

… It's a team where deep technical skill meets real customer impact, every day. About the Role As a Principal Forward Deployed Engineer, you'll bridge hands-on software development with high-impact customer technical …

Added Nov 4, 2026

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RTX

Principal Software Engineer - Advanced Simulation & Training Systems (Onsite)

Sterling, Virginia, United States

… - Current

 Security Clearance Status: Active and existing security clearance required on day 1 Principal Software Engineer - Advanced Simulation & Training Systems (Onsite) At RTX, the world's largest aerospace and defense …

Added Oct 27, 2026

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Palo Alto Networks

Principal Software Engineer - ADEM Agent (Client/Endpoint Focus)

Santa Clara, California, United States

… Your Career Palo Alto Networks' ADEM (Autonomous Digital Experience Management) group is seeking a Principal Software Engineer to serve as a primary architect and technical visionary for our ADEM Agent/Client software. In this …

Added Oct 27, 2026

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Northrop Grumman

Sr Principal Software Engineer – BM/SRM (26-325)

United States-Alabama-Huntsville

Pay posted by employer$135,800–$203,600

… Northrop Grumman Space Systems—Missile Defense Integration offers an excellent opportunity for a Sr Principal Software Engineer – BM/SRM (26-325) to join our team of skilled and diverse professionals. Based in Huntsville, AL, this role …

Added Nov 3, 2026

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Nvidia

Principal Software Engineer, GPU Firmware and GPU System Software — CSP Engagements

Santa Clara, California, United States +3 locations

We're looking for a Principal Software Engineer to join our CSP Engagements team as the technical focal point for GPU firmware and GPU system software, …

Added Oct 27, 2026

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Ingram Micro Holding

Principal, Software Engineer - Search (.NET Core, React, ELK)

Field

Hybrid

… where you’ll make technology happen in surprising ways. Let’s shape tomorrow - it’ll be a fun journey! As a Principal, Software Engineer , Own and deliver medium to large-scale projects with minimal supervision, ensuring …

Added Nov 3, 2026

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Palo Alto Networks

Principal Software Engineer, Device Security & Containers (NGFW) - NetSec

Office - India - Bangalore Bagmane Tech Park

… risks facing our everyday lives that are only enabled by a secure digital environment. Job Summary As a Principal Software Engineer for Device Security & Containers, you will build the enterprise managed devices running the PANW security …

Added Oct 28, 2026

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Palo Alto Networks

Principal Engineer Software (Prisma AIRS Backend - Runtime Security)

Office - USA - CA - Headquarters

As a Principal Software Engineer on the Prisma AIRS Runtime Security team, you will serve as a technical visionary and strategic leader …

Added Oct 27, 2026

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Palo Alto Networks

Principal Engineer Software (Strata Cloud Control Plane) (Evergreen)

Santa Clara, California, United States

… by the unknown risks facing our everyday lives that are only enabled by a secure digital environment. Principal Software Engineers are: Technical experts that help accelerate adoption of the very best engineering …

Added Oct 27, 2026

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Palo Alto Networks

Principal Software Engineer - Secrets Manager Integration Team (Hybrid)

Office - Bulgaria - Sofia

… functionality. We have an existing portfolio of such integrations and we continue to expand it. As a Principal Software Engineer in the Integrations team, you will act as a tech lead in various aspects. You will lead the team’s planning …

Added Nov 3, 2026

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Palo Alto Networks

Senior Principal Software Engineer – GlobalProtect (Windows & macOS Internals)

Office - USA - CA - Headquarters

About the Role As a Senior Principal Software Engineer for GlobalProtect, you will be the hands-on technical authority for our endpoint networking stack across …

Added Nov 5, 2026

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Comcast

Principal Engineer, Xfinity Mobile Systems & Software Architecture

Philadelphia, Pennsylvania, United States

Full time
Regular

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Preferred Qualifications · employer excerpt

Extensive experience in telecommunications, wireless systems, software architecture, systems engineering, or related engineering disciplines.
Strong understanding of mobile network and MVNO architectures.
Experience designing solutions in multi-MNO, MVNO, or carrier-integrated environments.
Demonstrated ability to translate network, product, and partner capabilities into system and software requirements.
Experience designing complex distributed systems and integrations using REST APIs, event-driven architectures, asynchronous messaging, and related integration patterns.

12 more in the full description below.

About this opportunity

Original employer description

Make your mark at Comcast -- a Fortune 30 global media and technology company. From the connectivity and platforms we provide, to the content and experiences we create, we reach hundreds of millions of customers, viewers, and guests worldwide. Become part of our award-winning technology team that turns big ideas into cutting-edge products, platforms, and solutions that our customers love. We create space to innovate, and we recognize, reward, and invest in your ideas, while ensuring you can proudly bring your authentic self to the workplace. Join us. You’ll do the best work of your career right here at Comcast. (In most cases, Comcast prefers to have employees on-site collaborating unless the team has been designated as virtual due to the nature of their work. If a position is listed with both office locations and virtual offerings, Comcast may be willing to consider candidates who live greater than 100 miles from the office for the remote option.)

Job Summary

This role provides technical leadership across Xfinity Mobile systems, multi-MNO integrations, and software platforms. The Principal Engineer will serve as a bridge between MVNO engineering, product, software development, and operations teams, translating network capabilities, partner interfaces, service behaviors, and product requirements into end-to-end technical solutions and software requirements.

The role will initially focus on international roaming and roaming product service assurance, while supporting broader Xfinity Mobile initiatives across our multi-MNO environment.

Job Description

This Engineer 5 role is based with the team in our cutting-edge Comcast Technology Center in downtown Philadelphia. It is not eligible for remote or virtual hiring.

Responsibilities:

Lead end-to-end solution architecture for Xfinity Mobile capabilities spanning multiple MNOs, Comcast applications, and business/product partner integrations.
Translate network capabilities, partner interfaces, service behaviors, and product needs into system architecture and clear, testable software requirements.
Serve as a technical bridge between MVNO/network engineering and software development teams, helping translate telecom capabilities into scalable software solutions.
Evaluate differences in MNO capabilities and interfaces and develop solution patterns that support common Xfinity Mobile capabilities while accommodating MNO-specific requirements where needed.
Develop architecture diagrams, end-to-end call flows, interface specifications, APIs, event flows, and functional and non-functional requirements.
Provide technical leadership for international roaming and roaming product service assurance, including monitoring, observability, troubleshooting, and operational capabilities.
Define requirements for highly available and resilient applications, including scalability, security, configuration management, failure handling, recovery, logging, monitoring, and alerting.
Partner with software engineering teams throughout architecture, design, development, and production readiness.
Analyze complex issues spanning MNO capabilities, partner platforms, Xfinity Mobile applications, and supporting infrastructure and drive cross-functional technical resolution.
Evaluate solution alternatives and technical trade-offs considering customer experience, reliability, operational complexity, extensibility, cost, and time to market.
Lead architecture and design reviews and provide technical guidance and mentorship across engineering teams.
Influence technical direction across product, engineering, operations, MNO, and partner organizations.

Preferred Qualifications:

Extensive experience in telecommunications, wireless systems, software architecture, systems engineering, or related engineering disciplines.
Strong understanding of mobile network and MVNO architectures.
Experience designing solutions in multi-MNO, MVNO, or carrier-integrated environments.
Demonstrated ability to translate network, product, and partner capabilities into system and software requirements.
Experience designing complex distributed systems and integrations using REST APIs, event-driven architectures, asynchronous messaging, and related integration patterns.
Experience designing highly available, resilient, scalable, and operationally supportable applications.
Experience with production observability, service assurance, monitoring, logging, metrics, alerting, and end-to-end troubleshooting.
Strong systems-thinking and problem-solving skills with the ability to analyze interactions across networks, applications, partner platforms, and infrastructure.
Demonstrated ability to lead technical architecture discussions and influence decisions across multiple teams and organizations.
Strong written and verbal communication skills.
Experience working with an MVNO or mobile network operator.
Experience with international roaming products, systems, or service assurance.
Knowledge of 4G/LTE and 5G architectures and mobile services.
Knowledge of SIM/eSIM provisioning, subscriber provisioning, entitlement, policy, charging, or OSS/BSS systems.
Experience with cloud platforms, microservices, APIs, event-driven architectures, and technologies such as Kafka.
Experience with multi-region or multi-site application architectures.
Software development experience sufficient to collaborate effectively with application development teams and participate in detailed software architecture and design discussions.

Employees at all levels are expected to:

Understand our Operating Principles; make them the guidelines for how you do your job.
Own the customer experience think and act in ways that put our customers first, give them seamless digital options at every touchpoint, and make them promoters of our products and services.
Know your stuff be enthusiastic learners, users and advocates of our game-changing technology, products and services, especially our digital tools and experiences.
Win as a team make big things happen by working together and being open to new ideas.
Be an active part of the Net Promoter System a way of working that brings more employee and customer feedback into the company by joining huddles, making call backs and helping us elevate opportunities to do better for our customers.
Drive results and growth.
Support a culture of inclusion in how you work and lead.
Do what's right for each other, our customers, investors and our communities.

Disclaimer: This information has been designed to indicate the general nature and level of work performed by employees in this role. It is not designed to contain or be interpreted as a comprehensive inventory of all duties, responsibilities and qualifications.

Skills

Application Development, Distributed System Design, Mobile Core Network, Mobile Virtual Network Operator (MVNO), Software Architectures, Wireless Systems

We believe that benefits should connect you to the support you need when it matters most, and should help you care for those who matter most. That's why we provide an array of options, expert guidance and always-on tools that are personalized to meet the needs of your reality—to help support you physically, financially and emotionally through the big milestones and in your everyday life.

Please visit the benefits summary on our careers site for more details.

Education

Bachelor's Degree

While possessing the stated degree is preferred, Comcast also may consider applicants who hold some combination of coursework and experience, or who have extensive related professional experience.

Certifications (if applicable)

Relevant Work Experience

10 Years +

Comcast is an equal opportunity workplace. We will consider all qualified applicants for employment without regard to race, color, religion, age, sex, sexual orientation, gender identity, national origin, disability, veteran status, genetic information, or any other basis protected by applicable law.

Why this result? · Employer labels

All keywords in title

Engineering
Full time
Regular

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