Christos Markou
Principal Software Engineer I at OpenTelemetry
Athens, Attica, Greece
Summary
🤩
Rockstar🎓
Top SchoolChristos Markou is a Principal Software Engineer and CNCF Ambassador with 11 years of experience specializing in observability, cloud-native systems, and open-source tooling. Based in Athens, he contributes upstream to OpenTelemetry (Semantic Conventions and Collector) and helps ensure Elastic’s compatibility as an OpenTelemetry backend, combining product-focused engineering with standards stewardship. His hands-on work spans eBPF networking and security (Cilium), Beats and Elastic integrations, and cross-platform metrics/log collection, reflecting deep expertise in Golang, Kubernetes, and systems telemetry. Notably, he has implemented security-minded observability features—like query/header redaction in Cilium’s Layer 7 processing—and driven documentation and metadata improvements in the OpenTelemetry Collector. He’s active in the community through speaking, blogging, and mentoring, bridging research-rooted systems knowledge from NTUA with practical production experience.
11 years of coding experience
9 years of employment as a software developer
General Lyceum Graduation, General Lyceum Graduation at 63rd Lyceum of AthensElectrical and Computer Engineering. 5-year studies equivalent to Master 300 ECTS Computer Engineering, Electrical and Computer Engineering. 5-year studies equivalent to Master 300 ECTS Computer Engineering at National Technical University of Athens
English, Greek
Github Skills (52)
monitoring10
kubernetes10
docker10
observability10
nat10
data-collection10
ebpf10
testing10
configuration-management10
http10
dockers10
networking10
security10
prometheus10
data-streaming10
Programming languages (16)
Github contributions (5)
elastic/integrations
Jun 2020 - Jan 2023
Role in this project:
DevOps Engineer
DevOps EngineerContributions:225 reviews, 64 commits, 124 PRs in 2 years 7 months
Contributions summary:Christos primarily focused on integrating and configuring various data streams and modules for the Kubernetes integration within the `elastic/integrations` repository. Their contributions included migrating existing modules, such as Prometheus and Kubernetes, into a package structure. They added new packages like NATS and STAN, and updated existing components to leverage new functionalities and settings. Furthermore, they updated the elastic-package dependency and adapted the codebase to reflect these upgrades.
elasticintegrationselasticsearch
elastic/beats
Aug 2018 - Jan 2023
:tropical_fish: Beats - Lightweight shippers for Elasticsearch & Logstash
Role in this project:Back-end Developer
Back-end DeveloperContributions:790 reviews, 508 commits, 1105 PRs in 4 years 5 months
Contributions summary:Christos's contributions focused on enhancing the `beats` project, specifically within the `filebeat` and `metricbeat` components. A key aspect of their work involved addressing Windows-specific issues, indicating experience with cross-platform development. They also added new modules and metricsets for various technologies like NATS and Prometheus, demonstrating a familiarity with building integrations and data collection. Furthermore, code changes reveal they were involved in updating dependencies to ensure compatibility within the larger Beats ecosystem.
tropicalheartbeatlogstashbeatsfilebeat
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