Rumen Georgiev
Lead Software Engineer at Nicoya Health
Sofia, Sofia-City, Bulgaria
Summary
🤩
Rockstar🎓
Top SchoolRumen Georgiev is a Lead Software Engineer based in Sofia with 13 years of experience building enterprise back-end and cloud-native systems. He has progressed from software developer and team lead roles to senior technical staff positions at VMware and Omnissa, and now leads engineering at Nicoya Health. Rumen combines hands-on backend and DevOps expertise with architecture and team leadership, focusing on reliable, maintainable systems for device management and operational tooling. He contributes to Kubernetes—notably improving kubeadm, kubelet config and upgrade robustness—highlighting a practical emphasis on production-grade orchestration and upgrade safety. Comfortable across the full lifecycle from upgrade/versioning edge cases to TLS and IPv6 configuration, he brings a pragmatic approach to hardening distributed systems. Trained at the Technical University of Sofia, he pairs deep technical fluency with a track record of shipping resilient enterprise software.
13 years of coding experience
19 years of employment as a software developer
Bachelor's degree, Computer Systems and Technologies, Bachelor's degree, Computer Systems and Technologies at Technical University of Sofia
Bulgarian, English
Stackoverflow
702reputation
198kreached
8answers
2questions
Github Skills (16)
kubernetes10
go10
etcd10
devops10
kubernetes-pods10
regular-expression9
configuration-management9
docker8
dockers8
actionscript6
algorithm6
crystal-reports6
slickgrid6
apache-flex6
complexity-theory6
Programming languages (7)
Github contributions (5)
kubernetes/kubernetes
Jan 2018 - Sep 2020
Production-Grade Container Scheduling and Management
Role in this project:
Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:6 reviews, 89 commits, 98 PRs in 2 years 7 months
Contributions summary:Rumen's contributions primarily revolve around the `kubeadm` tool for Kubernetes cluster management. They fixed a panic in CoreDNS version support by using regular expressions for image digest matching and addressed issues related to etcd versioning during upgrades. Additionally, the user increased the TLS bootstrapping timeout and moved the IPv6DualStack feature gate configuration to the component config. Further contributions include refactoring kubelet configuration and removing unused constants, demonstrating a focus on improving the robustness and maintainability of the Kubernetes deployment process.
containersschedulingdockergradeproduction-grade
rosti/kubernetes
Jan 2018 - Sep 2020
Production-Grade Container Scheduling and Management
Contributions:408 pushes, 100 branches in 2 years 7 months
containersschedulingdockergradeproduction-grade
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