Alexander Klizhentas
Chief Technology Officer at Teleport
Seattle, Washington, United States
Summary
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RockstarAlexander Klizhentas is a seasoned technology leader and co-founder currently serving as Chief Technology Officer at Teleport with 16 years of experience building cloud-native infrastructure and secure distributed systems. He blends hands-on engineering—contributions to well-known open-source projects like Vulcand and Oxy, where he implemented TLS, load balancing and retry logic—with strategic product and platform leadership. Prior roles as a founding member at Mailgun and technical lead at Rackspace underscore his experience scaling operations from early-stage startups to large enterprises. Deep expertise in Kubernetes, Docker, Etcd and networking/ security automation informs his practical approach to reliability and observability. Colocated in Seattle, he is comfortable moving between code, architecture and DevOps, and is known for reusing and refactoring core components to drive maintainability and operational efficiency.
16 years of coding experience
2 years of employment as a software developer
Github Skills (37)
kubernetes10
middleware10
docker10
tls1210
apidoc10
retrying10
cni10
bash10
load-balancing10
tls1310
dockers10
containerization10
mtls10
flannel10
go10
Programming languages (15)
Github contributions (5)
vulcand/vulcand
Mar 2014 - May 2017
Programmatic load balancer backed by Etcd
Role in this project:
Back-end Developer
Back-end DeveloperContributions:4 releases, 255 commits, 56 PRs in 3 years 1 month
Contributions summary:Alexander primarily focused on implementing TLS (Transport Layer Security) support, which included adding documentation, and fixing logging and connection tracking issues. The commits also involved setting and retrieving logging levels. The user made changes to the codebase to reuse an Etcd client, as well as added and updated features related to the API.
etcdprogrammaticbackedmonitoringload-balancer
vulcand/oxy
Dec 2014 - Jul 2017
Go middlewares for HTTP servers & proxies
Role in this project:Back-end Developer
Back-end DeveloperContributions:97 commits, 24 PRs, 28 pushes in 2 years 7 months
Contributions summary:Alexander's commits primarily focus on building and improving the `oxy` project, which is a middleware suite for HTTP servers and proxies. The contributions involve implementing core features like weighted round-robin load balancing and integrating retry mechanisms to enhance reliability. The user also refactored existing components, such as the streamer, to improve efficiency and maintainability while adding new functionality to existing components such as the forwarder.
golangproxyproxiesmiddlewaresmiddleware
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