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Senior WiFi AAA Engineer

Company: Comcast Corporation
Location: Hamilton
Posted on: February 7, 2024

Job 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 SummaryResponsible for managing and maintaining the Xfinity WiFi AAA platform, for public XWIFI - open and secure (EAP). Actively involved in providing technical solutions in support of the Xfinity WiFi product suite by optimizing the AAA infrastructure for greater efficiency and reliability, monitoring application and hardware health, and integrating with XWiFi APs (access points), Captive Portals, and WAGs (wireless aggregation routers), to ensure accurate authentication, authorization, and accounting, in compliance with security policies. Partner with key stakeholders: XWiFi Engineers from the Core Network, QA, and Operations teams, Product Owners, Security, MSO/Cablewifi partners, and vendors.Job DescriptionSenior Xfinity WiFi AAA Engineer Core Responsibilities:AAA Design and Planning

  • Participate in design of new features and enhancements to existing the AAA configuration and policy flow with key stakeholders
  • Develop code for new features, policy flows, and protocols within the AAA platform
  • Manage and maintain various profiles and models in support of different types of customers
  • Develop and maintain AAA secure protocols for EAP TTLS/TLS/GTC and Xfinity Mobile carrier bundle (Android and iOS)
  • Modify and maintain SOAP APIs to populate AAA in-memory caches (USS2 models)
  • Support and optimize performance of current AAA infrastructure to maximize efficiency, capacity, reliability, and securityAAA Implementation and Configuration
    • Coordinate and support deployment of AAA changes from LAB to pre-prod to production
    • Unit test and coordinate with Xfinity WiFi QA and 3rd Party Partners: Single Digits, Cox, Altice, Charter
    • Define and socialize standard procedures for network installation, maintenance, and operations: create detailed MOPs
    • Follow the change management process for ticket creation, change implementation, and post-deployment validation
    • Participate in development of automation to streamline processes
    • Manage and maintain AAA hardware and network configurations for LAB, pre-prod, and production environments
    • Plan and implement AAA hardware (physical servers), network upgrades, and expansionAAA Platform Monitoring and Maintenance
      • Monitor AAA platform performance: ensure high availability and reliability, identify problems and respond accordingly
      • Build and enhance dashboards and alerts on key AAA hardware, software, and network elementsAAA Network Security
        • Implement and maintain network security measures to protect against unauthorized access, data breaches, and malware
        • Configure firewalls and advise on the integration of intrusion detection: protect the AAA platform from DDoS
        • Participate in periodic network audits to ensure compliance with security standardsAAA Documentation and Reporting
          • Maintain detailed documentation on AAA for new development, changes, and deployment MOPs
          • Maintain detailed AAA hardware and network documentation for LAB and production
          • Define and create regular reports on AAA components for performance, availablity, and capacity to inform decision-making and drive continuous process improvementCollaboration and Communication
            • Partner effectively with engineers, key stakeholders, and vendors
            • Share knowledge and provide guidance to team members: provide technical support and assistance for AAA related issues
            • Exercise consistent independent judgment and discretion in matters of significance to achieve maximum service availability and optimal customer experience
            • Work productively without close supervision
            • Participate in 24x7 on call rotation as primary or secondary
            • Available to work nights and weekends as needed
            • Attain and maintain key industry standard certifications and education
            • Stay current with the latest AAA RFCs, industry best practices, and security trendsQualifications:
              • Protocols - RADIUS, DIAMETER, EAP TTLS/TLS/GTC: secure profiles, certs, and keys, SOAP, SSH, UDP, TCP, SFTP, SCP
              • L2 and TCP/IP Networking, IPv4/IPV6, MAC addressing - MAC randomization, Captive Portal integration
              • Coding skills - Java, Javascript, Perl
              • Linux - Intermediate, CentOS preferred
              • Tools - Grafana, Wireshark, Zabbix, Splunk
              • Scripting/Automation - Bash, Ansible
              • Database/Streaming - SQL, MySQL, Cassandra, Kafka
              • Hardware - HP or Dell: physical server configuration, monitoring, management, and alerting
              • F5 Load balancers and VIPs - configuration, monitoring, management, and alerting
              • CI/CD - - GIT, GIT Copilot, Jenkins, Mortar, Docker
              • Virtualization - VMware, Cloud
              • Nokia Motive 8950 experience highly desirable, free radius experience acceptable
              • WiFi RF and Networking - General/AdvancedSkills
                • Proven experience in designing, implementing, and managing Radius AAA systems
                • Strong knowledge of AAA protocols and standards: RADIUS and Diameter
                • Solid understanding of access control mechanisms, authentication protocols, and encryption techniques
                • Proficient in monitoring and diagnostic tools to maintain highest availability and best customer experience: AAA application, network, and hardware
                • Able to create and interpret complex requirements
                • Develop new features and enhancements for the AAA platform
                • Able to troubleshoot and resolve complex Xfinity AAA issues, remediate outages or performance degradation
                • Understanding of Network, OSS/BSS system integration points, and network security principles and practices
                • Proficient in creating and interpreting documentation
                • Able to quickly develop an understanding of XWIFI end-to-end call flows for each use case
                • Proven business skills: able interact professionally with internal teams and external vendorsExperience/Education
                  • 8-12 years' experience supporting in Telecommunication/Cable Development and Operations or related field managing high reliability large-scale systems: AAA/Radius experience highly preferred - Nokia or FreeRadius
                  • Certifications: preferred CWNA, CWSP, Java OCA, CCNA Wireless, CCNA Routing and Switching or equivalent experience
                  • B.S. Computer Science or Engineering or M.S. Computer ScienceCore Responsibilities
                    • Collaborates with project stakeholders to identify product and technical requirements. Conducts analysis to determine integration needs.
                    • Designs new software and web applications, supports applications under development and customizes current applications. Develops software update process for existing applications. Assists in the roll-out of software releases.
                    • Trains junior Software Development Engineers on internally developed software applications.
                    • Oversees the researching, writing and editing of documentation and technical requirements, including evaluation plans, test results, technical manuals and formal recommendations and reports.
                    • Keeps current with technological developments within the industry. Monitors and evaluates competitive applications and products. Reviews literature, patents and current practices relevant to the solution of assigned projects.
                    • Provides technical leadership throughout the design process and guidance with regards to practices, procedures and techniques. Serves as a guide and mentor for junior level Software Development Engineers.
                    • Assists in tracking and evaluating performance metrics. Ensures team delivers software on time, to specification and within budget.
                    • Works with Quality Assurance team to determine if applications fit specification and technical requirements.
                    • Displays expertise in knowledge of engineering methodologies, concepts and skills and their application in the area of specified engineering specialty.
                    • Displays expertise in process design and redesign skills. Presents and defends architectural, design and technical choices to internal audiences.
                    • Consistent exercise of independent judgment and discretion in matters of significance.
                    • Regular, consistent and punctual attendance. Must be able to work nights and weekends, variable schedule(s) and overtime as necessary.
                    • Other duties and responsibilities as assigned.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.
                      • Respect and promote inclusion & diversity.
                      • 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.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.EducationBachelor's DegreeWhile 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 Experience7-10 YearsBase 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. 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 on our careers site for more details.

Keywords: Comcast Corporation, Hamilton , Senior WiFi AAA Engineer, IT / Software / Systems , Hamilton, Ohio

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