Jul 2019 - Present
Network infrastructure security engineer
- Built a high performance DNS proxy service which supports DNS over HTTPs/TLS and serves Facebook IOS mobile user, expects over 100K QPS globally
- Built a large scale secure proxy cache system which offloads sensitive data from PoP (point of present) to data center, and secures connections through TLS
- Responsible for developing data center host-level firewall leveraging Express Data Path (XDP) bpf program
- Experience in network stack, HTTPs, DNS, BPF program