Senior Engineer, Infrastructure/Platform

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

Responsible for end-to-end ownership of projects across the entire stack. Build products with web frameworks, application programming interfaces, databases, and multiple Backend languages. Solve challenges that impact both the front-end and backend architecture, while delivering global customer experiences. Integrates knowledge of business and functional priorities. Acts as a key contributor in a complex and crucial environment. May lead teams or projects and shares expertise.

Job Description

The Technology & Product organization works at the intersection of media and technology and our innovative teams are continually developing and delivering products and next-generation technologies that transform the customer experience. The Comcast Network and CONNECTivity (CONNECT) organization is a highly agile, fast-paced, dedicated group at the forefront of change focused on innovating, building, and operating the best in class, most reliable access network for our customers.

We are seeking a highly skilled Senior Engineer (Engineer 4) who excels in managing complex infrastructure and distributed systems. The ideal candidate should have a deep understanding of Kubernetes, Linux internals, operating systems, and networking fundamentals. This role will be central to the design, development, deployment, and operation of scalable, secure, and resilient infrastructure for our on-premises platform.

RESPONSIBILITIES:

• Developing well-tested, ready-for-production code.
• Contributing to design and architecture discussions.
• Creating robust deployment and monitoring systems.
• Providing support for production environments.
• Conducting code reviews and engaging in agile software development activities.
• Collaborating positively with team members.
• Adaptable, proactive, and willing to take ownership.
• Keen attention to detail and high level of commitment.
• An ability to adapt quickly in a fast-paced agile setting.
• Comfortable working in a fast-paced agile environment. Requirements change quickly and our team needs to constantly adapt to moving targets.
• Excellent communication skills and the ability to articulate technical challenges and solutions to a diverse audience.

DESIRED SKILLS AND EXPERIENCE:

• Bachelor’s degree in computer science, computer engineering, or a related technical field, or equivalent practical experience.
• 8+ years of experience

Expert-level proficiency in Kubernetes:

• Hands-on experience with Kubernetes internals (schedulers, controllers, API server, flannel).
• Experience with CRDs, Operators, Helm, and controller-runtime.
• Ability to debug and optimize workloads and cluster performance.

Strong Linux and OS-level understanding:

• Deep knowledge of Linux kernel concepts (cgroups, namespaces, process/thread scheduling).
• Process scheduling, thread management, signal handling, virtual memory management.
• Familiar with system calls, memory management, and In-depth filesystem behavior (ext4, XFS, overlayfs, etc.).
• Comfortable with system tuning and kernel parameter optimization.
• Hands-on with system boot process.
• Experience debugging low-level system issues using tools (strace, perf, ftrace, vmstat, iotop, dmesg, sysctl)

Advanced Networking Knowledge:

• Deep expertise in network architecture and protocols
• Practical knowledge of networking tools and diagnostics:
• Proficiency in network namespaces, IP tables, routing, and DNS.
• Experience with Kubernetes networking

Programming & Scripting:

• Golang, Python, C++, Bash, Rust

Additionally, experience in coreAWSservices (EC2, S3, VPC, IAM), infrastructure as code (Terraform, CloudFormation) and RDS databases like Postgres and SurrealDB is a plus.

OUR TEAM VALUES:

• Mutual respect and diversity of thought.
• Curiosity, experimentation, and the pursuit of continuous improvement.
• Team unity and minimal ego.
• Leadership and the willingness to technically guide scrum teams.
• Strong commitment to delivering projects on time.
• Dedication to training and mentoring young engineers.
• Simplicity in our architecture and coding, with a focus on details.
• Finding joy in our work and maintaining a balance with personal life.
• Ownership at both personal and team levels, building on mutual trust.
• Thoughtful refactoring and challenging the status quo.

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.

Comcast is proud to be 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.

Skills:

C++ Programming Language; Kubernetes; Linux; Networking Technologies; Python (Programming Language); Cable Modem Termination System (CMTS)

Base pay is one part of the Total Rewards that Comcast provides to compensate and recognize employees for their work. Most sales positions are eligible for a Commission under the terms of an applicable plan, while most non-sales positions are eligible for a Bonus. Additionally, Comcast provides best-in-class Benefits to eligible employees. 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 compensation and 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.

Relevant Work Experience

7-10 Years