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** We are seeking a highly experienced Sr. Full Stack Engineer to guide the team responsible for the stability, performance, and reliability of Project Iris, Comcast’s next generation GIS based CAD platform for broadband network design. Iris is a core strategic system within AeGIS, the CONNECT organization that builds the tools enabling the construction, improvement, and long term evolution of Comcast’s nationwide access network. The system supports the planning and design of more than one million miles of coax and fiber infrastructure, and integrates automation capabilities that reduce design cycle time and cost. As Comcast continues deploying some of the most advanced broadband networks in the world, Iris plays a critical role in ensuring our design and deployment teams have the tools needed to work at scale. Built on modern technologies including Unity3D, Node.js, MongoDB, and AWS, Iris demands strong architectural stewardship and engineering leadership to maintain enterprise grade performance, resiliency, and accuracy. **Job Description** In this role, you will lead a team of engineers responsible for **diagnosing, triaging, and resolving production issues** across the full stack. You will own root‑cause analysis of complex system behaviors and design forward‑looking solutions that improve system scalability, robustness, and availability. You will mentor engineers, establish best practices, and drive continuous improvements in code quality, observability, and operational excellence. This is a hands-on engineering role requiring both deep technical expertise and the ability to guide a team through ambiguity, complex technical challenges, and high‑priority production scenarios. Expertise across the Iris stack—Node.js, Unity3D/C#, MongoDB—as well as deep understanding of broadband network architecture is essential. Broadband domain expertise should include: + HFC (Hybrid Fiber Coax) + rPHY (Remote PHY) + EPON (Ethernet Passive Optical Networks) + DAA (Distributed Access Architectures) + DWDM (Dense Wavelength Division Multiplexing) Required skills: + **7+ years** building and supporting enterprise‑scale software systems, including leadership responsibilities such as mentoring, code reviews, and architectural decision‑making + **5+ years** of hands‑on development experience with **Node.js** in high‑performance, distributed architectures + **5+ years** of experience designing, optimizing, and implementing solutions on **MongoDB** + **3+ years** of professional **Python** development + Experience with **Unity3D** and C# for interactive client applications + Experience integrating with **GIS** platforms and spatial data systems + Strong experience establishing and using observability platforms such as **ELK** , **Kibana** , and **Grafana** + Familiarity with **AI‑assisted development tools** , including Retrieval‑Augmented Generation (RAG), and their practical application in engineering workflows + **7+ years** of direct experience with broadband access network technologies (HFC, rPHY, EPON, DAA, DWDM) and the ability to translate domain knowledge into technical decision‑making + Demonstrated ability to lead engineering teams through production issues, drive permanent fixes, establish operational best practices, and improve long‑term product stability **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 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:** JavaScript; Structured Query Language (SQL); Unity3D; Node.js 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 (https://jobs.comcast.com/benefits) 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 **Job Family Group:** Engineering