Full Stack Engineer - Traffic Management - London

Responsibilities

Edge Platform team is seeking experienced developers for our edge platform networking 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 TikTok's self-built CDN PoPs, supporting user performance optimization and resource load balancing. Edge Platform team operates hundreds of PoPs 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 site traffic management 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 TikTok users routing layer performance analysis and troubleshooting
- TikTok internal and external services support on public internet topology and connectivity

Qualifications

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
- 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
- Knowledge of HTTP, HTTPS, QUIC
- 3+ years' experience in one or more programming languages such as Go, or scripting experience in Shell and Python

Preferred Qualifications
- Experience with Kubernetes
- Experience with DNS service
- Knowledge of internet OSI model
- Fast learner