Ifeanyi Ubah
Lead Software Engineer at VALIDIO
Stockholm, Stockholm County, Sweden
Summary
🤩
Rockstar🎓
Top SchoolIfeanyi Ubah is a Lead Software Engineer based in Stockholm with 10 years of experience building resilient backend and networking systems. He combines a master's-level background in distributed systems with hands-on work at companies like Embark Studios and DigitalRoute, focusing on scalable, production-grade services. An active open-source contributor, he has improved high-profile projects such as Quilkin (adding load-balancing, rate limiting and Prometheus session metrics) and Cilium (enhancing eBPF tooling, tests and operator probes). Known for pragmatic refactors and bug fixes that reduce complexity and improve observability, he bridges backend engineering and DevOps concerns to ship reliable systems. Colleagues would describe him as a practical problem-solver who surfaces subtle infrastructure issues and turns them into maintainable solutions.
10 years of coding experience
4 years of employment as a software developer
Master's degree, Software Engineering of Distributed Sytems, Master's degree, Software Engineering of Distributed Sytems at KTH Royal Institute of TechnologyBachelor's Degree, Computer Engineering, Bachelor's Degree, Computer Engineering at Mid Sweden UniversityComputer Software Engineering, Computer Software Engineering at University of Gothenburg
English, Swedish
Github Skills (23)
kubernetes10
multiplayer10
ebpf10
game-dev10
testing10
load-balancing10
networking10
go10
prometheus10
multiplayer-game10
kubernetes-pods10
rust10
game-development10
rate-limiting9
bpf9
Programming languages (13)
Github contributions (5)
googleforgames/quilkin
Jun 2020 - Jan 2022
Quilkin is a non-transparent UDP proxy specifically designed for use with large scale multiplayer dedicated game server deployments, to ensure security, access control, telemetry data, metrics and more.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:127 reviews, 76 commits, 23 PRs in 1 year 8 months
Contributions summary:Ifeanyi primarily focused on improving the Quilkin proxy's backend functionality. They removed redundant asynchronous code, corrected comment typos, and added support for client proxy load balancing, including RoundRobin and Random policies. Further contributions included integrating Prometheus metrics for session tracking and implementing a local rate-limiting filter. They also refactored the configuration and added support for a dynamic configuration via XDS.
proxyudp-proxydedicated-gameserversdedicatedtelemetry-data
cilium/cilium
Jul 2018 - Nov 2019
eBPF-based Networking, Security, and Observability
Role in this project:Backend & DevOps Engineer
Backend & DevOps EngineerContributions:25 PRs, 67 comments in 1 year 4 months
Contributions summary:Ifeanyi primarily contributed to the Cilium project by adding and improving unit tests, enhancing ID allocation, optimizing locking mechanisms, and refactoring CLI command handling. They also addressed several bugs, including those related to DNS lookup timeouts in Istio and nil pointer dereferences. Furthermore, the user added functionality for liveness probes in the Cilium operator and introduced enhancements to the BPF metrics and IPcache commands.
bpfcontainerskerneltroubleshootingkubernetes-networking
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