Full Stack Engineer, Traffic Management

About the Team:

Edge Traffic Scheduling team is seeking experienced developers for our edge network and maintain its stability as well as drive the functionality and capability of our infrastructure to the next level. Our team builds cross sites (also cross uplink providers) traffic management system based on DNS, to manage Tik Tok's self-built CDN Po Ps, supporting user performance optimization and resource load balancing. Edge Traffic Scheduling team operates hundreds of Po Ps and their networking and traffic around the world to run edge workloads (e.g. CDN cache, live streaming, gaming, real-time communication, etc.). The cross PoP traffic scheduling system is one of the core parts of the platform, as it has a direct impact on user experience. We are looking for passionate engineers to join and work together to build a traffic management system that provides one-stop solutions for edge services running on our edge platform.

Responsibilities:

• Design and build a control system that directs traffic following performance-based or cost-based routing strategies
• Global Tik Tok users routing layer performance analysis and troubleshooting
• Byte Dance internal and external services support on public internet topology and connectivity

Requirements:

Minimum Qualifications:

• Master’s degree (or bachelor’s degree with 3+) years of experience in Computer Engineering, Electrical Engineering, Computer Science, or related quantitative fields
• Experience with DNS service
• Knowledge of networking protocols such as BGP, IP (IPv4 and IPv6), TCP, UDP
• Experience with networking tools, including ping, mtr, traceroute
• Experience with networking metrics, including SNMP, sflow / netflow
• Experience with IPDB
• Knowledge of HTTP, HTTPS, QUIC

Preferred Qualifications:

• 3+ years’ experience in one or more programming languages such as Go, or scripting experience in Shell and Python
• Experience with Kubernetes
• Knowledge of internet OSI model
• Experience with AI Agent