This senior-level role is responsible for technical leadership, design, implementation, optimization, and highest-level operational support for critical Internet-facing systems within a large-scale Service Provider network. As the Subject Matter Expert, you will possess deep technical knowledge across key platforms including Carrier-Scale DNS (Recursive & Authoritative), Web Filtering, Deep Packet Inspection (DPI), Content Delivery Network (CDN) integration points, DDoS Mitigation (Arbor), Carrier-Grade NAT (CG-NAT), and the underlying Linux infrastructure. Your expertise will ensure the reliability, performance, security, and scalability of these essential internet services. Hands-on experience with key vendors like Akamai, Infoblox, WireFilter/Symantec, Arbor, and F5 is highly desirable.
Key Responsibilities:
- Technical Leadership & Architecture: Lead the design, architecture, and evolution strategy for carrier-scale DNS, Web Filtering, CG-NAT, DDoS mitigation, and related internet service platforms.
- Platform Management & Optimization: Oversee the day-to-day health, performance tuning, and capacity management of critical internet systems.
- Advanced Troubleshooting (L3/L4 Support): Serve as the final escalation point for complex and chronic incidents impacting internet systems.
- System Administration & Security: Perform advanced Linux system administration, including performance tuning and security hardening.
- Vendor & Technology Management: Act as the primary technical liaison with key vendors and manage CDN relationships.
- Change & Problem Management: Define and oversee the execution of complex changes on critical internet systems.
- Automation & Scripting: Identify and implement automation scripts for system deployment and management tasks.
- Mentorship & Documentation: Provide technical guidance and maintain design documents and operational procedures.
Required Qualifications & Experience:
- Education: Bachelor's or Master's degree in Computer Science, Information Technology, Telecommunications Engineering, or a related field.
- Experience: Minimum 7-8 years in a large-scale Service Provider (ISP/Telecom) environment, focusing on critical internet systems.
- Core Technical Expertise:
- DNS: Expert-level knowledge of DNS protocols, operations, and security, including DNSSEC concepts.
- Linux/Unix: Expert-level skills in Linux system administration (RHEL, CentOS, Debian).
- CG-NAT: Understanding of Carrier-Grade NAT principles and optimization techniques.
- Web Filtering: Knowledge of web filtering concepts and security implications.
- DDoS Mitigation: Understanding various DDoS attack vectors and mitigation techniques.
- Networking: Strong knowledge of TCP/IP fundamentals and routing protocols.
- Internet Services: Understanding of DPI concepts and CDN architectures.
Language Requirements:
- Fluency in English (written and verbal).
Desired Skills & Experience:
- Hands-on experience with specific vendors such as Akamai, Infoblox, WireFilter, Arbor, and F5.
- Proficiency in scripting languages like Python or Bash for automation and integration.
- Relevant industry or vendor certifications.
- Familiarity with the ITIL framework.
- Strong analytical and problem-solving skills.
