Anastasios Papagiannis
Software Engineer Technical Leader, Isovalent At Cisco
Greece
Summary
🤩
Rockstar🎓
Top SchoolAnastasios Papagiannis is a software engineer and technical leader with nine years of experience building reliable, production-grade systems in cloud and systems software roles across Isovalent, Meta, and research institutions. He holds a PhD, MSc, and BSc in Computer Science from the University of Crete and combines deep research grounding with hands-on production engineering and DevOps practice. At Isovalent he works on cloud-native networking and security, and his open-source contributions to the high-profile cilium/tetragon project show practical kernel- and user-space enhancements for eBPF-based security observability (including a notable CopyFD action for tracing dup* syscalls). Comfortable moving between kernel-level tracing, distributed production services, and security observability, he brings a rare blend of academic rigor and pragmatic system-building. Based in Greece, he has a track record of shipping observability and security features that bridge research prototypes and scalable production deployments.
9 years of coding experience
14 years of employment as a software developer
Doctor of Philosophy - PhD Computer Science, Doctor of Philosophy - PhD Computer Science at University of Crete, Department of Computer Science
Github Skills (9)
kernel10
go10
kernel-mode10
ebpf10
bpf10
kubernetes-pods9
security9
kubernetes9
system-design8
Programming languages (5)
Github contributions (5)
cilium/tetragon
May 2022 - Nov 2022
eBPF-based Security Observability and Runtime Enforcement
Role in this project:
Back-end Developer & Security Engineer
Back-end Developer & Security EngineerContributions:444 reviews, 111 commits, 290 PRs in 6 months
Contributions summary:Anastasios primarily contributed to the security and observability aspects of the `cilium/tetragon` project. They introduced the `CopyFD` action for capturing file descriptors from `dup*` syscalls, which enhanced the project's tracing capabilities. The contributions included modifying the protobuf definitions, kernel-level code (`bpf/lib/process.h`), and user-space code. Further contributions included fixing and testing selectors, and addressing path resolution issues, indicating work related to core system monitoring and security.
bpfkernelenforcementsecurityruntime
tpapagian/dune
Aug 2017 - Jul 2019
Contributions:7 pushes, 2 branches in 1 year 11 months
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