Evgeny Khramtsov
Technical Team Lead at RingCentral
Madrid, Community of Madrid, Spain
Summary
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RockstarEvgeny Khramtsov is a Technical Team Lead and backend specialist with over 20 years of experience building and optimizing high-performance distributed systems using Erlang, C, Rust, Go, Node.js and cloud-native tools like Docker and Kubernetes. He has deep protocol-level expertise—SIP, SIGTRAN, XMPP/MQTT—and has shipped production systems including an Erlang SIP Session Border Controller, a Maglev-like L3/L4 balancer leveraging eBPF, and media discovery services. Evgeny combines hands-on engineering with Scrum leadership, mentoring small cross-functional teams while driving benchmarking, automated testing, and documentation standards. A long-time contributor to the ejabberd ecosystem, he has adapted and extended Erlang modules used in large-scale IM and IoT deployments for clients such as EA, Ubisoft and Nokia. Based in Madrid and fluent in Russian and English, he brings a pragmatic blend of low-level systems thinking and modern cloud practices to complex infrastructure challenges.
20 years of coding experience
13 years of employment as a software developer
Stackoverflow
526reputation
17kreached
36answers
0questions
Github Skills (10)
xmpp10
ejabberd10
erlang10
sql8
xml6
mongooseim6
rfc6
database-design6
ejabberd-module6
mysql6
Programming languages (16)
Github contributions (5)
processone/ejabberd-contrib
Sep 2016 - Nov 2019
Growing and curated ejabberd contributions repository - PR or ask to join !
Role in this project:
Backend Developer
Backend DeveloperContributions:10 commits, 3 PRs, 10 pushes in 3 years 2 months
Contributions summary:Evgeny primarily contributed to the ejabberd-contrib repository by updating and modifying Erlang modules, likely to enhance or maintain the functionality of the ejabberd XMPP server. Their work involved adapting modules like `mod_post_log`, `mod_s2s_log`, and `mod_irc` to ensure compatibility with newer ejabberd versions and to integrate new features. These contributions included SQL schema additions and the addition of a new module `mod_isolation`.
ejabberd
processone/zlib
Apr 2013 - Feb 2015
Native zlib driver for Erlang
Contributions:17 commits, 3 PRs, 2 pushes in 1 year 11 months
drivererlangzlib
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