Senior Software Engineer, VIPER CDN

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Sr. Software Engineer, VIPER CDN

We are looking for engineers to join our Content Delivery team. Do you love to build massive distributed
systems? Are you passionate about open source software, and building systems using it? Do you like to
add immediate, tangible business value?

As an engineer in the CDN team, you will help build the infrastructure and develop software to support the
systems that deliver IP content for a wide range of mobile and first-screen television devices. As part of
the larger Comcast engineering teams, you will help shape the next generation of IP content delivery and
transform the customer experience. Using the tenets of DevOps, you will have the opportunity to own the
entire stack, from architecture to production.

Who does the CDN engineer work with?
Traffic Control is the Open Source CDN control plane for which we lead the development, and this project
represents our primary focus. Want to learn more? Visit There you will
find the documentation, source code, and every open bug. We're a small team, delivering state-of-the-art
software solutions at the leading edge of CDN technology.

What are some interesting problems you'll be working on?
We deliver petabytes of traffic and billions of transactions every day. Our software infrastructure is crucial
in analyzing this data to visualize trends, and enable deep-diving into issues.

Where can you make an impact?
Thinking out of the box and considering the customer experience are key to our success. We never want
to impact service unless it is in a positive manner. We need additional team members to follow their
passion of coding and contribute to the delivery code at the heart of many organizations!

• Design new software applications, support applications under development, and customize existing
• Develop software update process for existing applications. Assist in the rollout of software releases.
• Collaborate with project stakeholders to identify product and technical requirements. Conducts
analysis to determine integration needs.
• Diagnose performance issues and propose and implement code improvements
• Ensure the software architecture is lean and extensible
• Ensure software modules are reliable for reuse
• Work with Quality Assurance team to determine if applications fit specification and technical

Here are some of the specific technologies we use for Traffic Control:
• Go (golang)
• Java
• Linux (CentoOS)
• Git
• Apache httpd
• Perl
• InfluxDB
• Docker

Preferred Skills:
• An open mind and a passion for coding excellence
• BS in Computer Science or 6+ years equivalent experience
• Experience in OO programming languages, mainly Java. Experience with GoLang highly desired
• Knowledge of Object Design, Design patterns, and Algorithms
• Experience developing software for Networking, Web services, DNS, HTTP, and TCP/IP
• Good communicator; able to analyze and clearly articulate complex issues and technologies
understandably and engagingly
• Great design and problem-solving skills, with a strong bias for architecting at scale
• Strong troubleshooting and problem-solving skills, adaptable, proactive and willing to take
• Able to work in a fast-paced environment

About the CDN Team:
The CDN team is a quasi-startup group within Comcast's Technology and Product Division and is based
in Denver's LoDo district. Our technology is open-source based, and our products deliver video and other
content over IP infrastructure to an array of connected devices in and out of the home.
Comcast is an EOE/Veterans/Disabled/LGBT employer

About Comcast VIPER (Video IP Engineering & Research)

VIPER (Video IP Engineering & Research), is a division within Comcast's VNCRE (Video, Network, Cloud and Reliability Engineering) team and spun out from IP Video and online projects originated within Comcast Interactive Media is based in downtown Denver, CO. We are a cloud-based, IP video infrastructure that's been built to deliver a broad mix of on-demand video, live TV streams and an assortment of other digital media to an array of connected devices in the home.

Comcast is an EOE/Veterans/Disabled/LGBT employer