应用网关研发工程师/资深专家-基础架构
Core
Design and develop high-performance traffic access systems and application-layer gateways for ByteDance's core business lines (Douyin, Toutiao), handling billions of QPS and massive long connections.
Role type
Senior IC infrastructure engineer (application gateway)
Builds
High-performance traffic access systems, L7 load balancers, API gateways, and long-connection message gateways for Douyin and Toutiao.
Domain
Internet infrastructure, high-concurrency systems, network protocols
Required skills
C/C++/Go, Linux network programming, TCP/IP stack, HTTP/HTTPS/WebSocket protocols, high-concurrency service development, distributed system design
Preferred skills
Web Server development (Nginx, Kong, OpenResty, Envoy), DNS, cloud networking (VPC, NAT), QUIC protocol
Responsibilities
Design and implement core gateway modules including traffic scheduling, rate limiting, overload protection, and plugin systems; Architect and develop long-connection message gateways with custom QUIC protocols; Develop forward proxy architectures integrating security components; Optimize system performance and stability under high concurrency and low latency; Analyze and resolve complex online issues to improve observability and fault localization.