Senior Internet Systems Engineer

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.