Dmitriy Alekseev
DevOps Engineer at Namecheap, Inc
Oberhausen, North Rhine-Westphalia, Germany
Summary
🤩
Rockstar🎓
Top SchoolDmitriy Alekseev is a DevOps Engineer with nine years of experience, currently focused on infrastructure and platform reliability at Namecheap while based in Oberhausen, Germany. He brings practical expertise in mail system hardening and containerized deployments, contributing notable improvements to the popular mailcow-dockerized open-source project around Postfix, netfilter rules, and SOGo integrations. Comfortable operating in production environments, he has a track record of tightening mail delivery security (e.g., anonymizing sender IPs and refining SMTP handling) and simplifying configuration management. Dmitriy pairs a formal IT education from Kyiv National Economics University with hands-on system-level problem solving and cross-team collaboration. Not actively seeking new roles, he nevertheless continues to refine open-source infrastructure tooling and operational practices. His work reveals a pragmatic mindset: small, auditable changes that reduce attack surface and improve maintainability in real-world mail platforms.
9 years of coding experience
Bachelor's degree, Information Technology, Bachelor's degree, Information Technology at Kyiv National Economics University
Stackoverflow
1reputation
0reached
1answer
0questions
Github Skills (20)
docker10
post10
docker-compose10
smtps10
smtp10
dockers10
smtpd10
postfix-notation10
netfilter10
rspamd9
automations8
automation8
it-security8
security8
sec8
Programming languages (23)
Github contributions (5)
mailcow/mailcow-dockerized
Nov 2019 - Apr 2022
mailcow: dockerized - 🐮 + 🐋 = 💕
Role in this project:
DevOps Engineer
DevOps EngineerContributions:7 reviews, 51 commits, 72 PRs in 2 years 5 months
Contributions summary:Dmitriy focused on enhancing the mailcow-dockerized project's infrastructure and configuration, particularly concerning postfix and netfilter components. They made changes to Postfix settings, including disabling SMTPUTF8, anonymizing sender IPs, and refactoring the master.cf file. Additionally, they worked on netfilter configurations, incorporating a rule for non-SMTP commands and improving ban exclusions. Furthermore, the user made improvements to SOGo contacts dynmap and updated configuration settings.
sogodovecotdisposablemailboxdockerized
dragoangel/rspamd.com
Jul 2020 - Dec 2024
rspamd.com website.
Contributions:43 pushes, 15 branches in 4 years 5 months
rspamd
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