Dmytro Kozlov
Full Stack Developer at VictoriaMetrics
Warsaw, Masovian Voivodeship, Poland
Summary
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RockstarDmytro Kozlov is a Full Stack Developer based in Warsaw with 10 years of experience building reliable back-end systems and pragmatic user-facing fixes. He contributes to high-performance open-source projects like VictoriaMetrics, where he improved alerting, authentication (including OAuth2), and UI labels—work that touches both operational reliability and developer experience. Comfortable across the stack, he has modernized Go tooling and terminal handling in popular utilities, showing attention to compatibility and maintenance. Dmytro blends hands-on engineering with a focus on production-ready changes that reduce operational friction and enhance security. He prefers pragmatic, incremental improvements that deliver measurable value rather than large speculative rewrites.
10 years of coding experience
Github Skills (16)
alertdialog10
user-authentication10
authentication10
go10
alertview10
progress-bar10
alerts10
terminal-application10
back-end-development10
oauth9
prometheus9
syscall9
build-automation8
uid6
front-end-development6
Programming languages (5)
Github contributions (5)
VictoriaMetrics/VictoriaMetrics
Mar 2022 - Jan 2023
VictoriaMetrics: fast, cost-effective monitoring solution and time series database
Role in this project:
Back-end Developer
Back-end DeveloperContributions:745 reviews, 158 commits, 191 PRs in 10 months
Contributions summary:Dmytro contributed significantly to the `vmalert` and other components within the `victoriametrics` repository, focusing on enhancing authentication mechanisms, adding flags for various auth types, and integrating support for OAuth2. Their work extended to implementing features such as `resendDelay` for alerts and modifying the UI by fixing labels, suggesting involvement in both functionality and user interface aspects. Additionally, they worked on fixing incorrect headers for certain paths.
promqlobservabilitycost-effectivegrafanaprometheus
cheggaaa/pb
May 2022 - May 2022
Console progress bar for Golang
Role in this project:Back-end Developer
Back-end DeveloperContributions:5 commits, 3 PRs, 3 comments in 1 day
Contributions summary:Dmytro primarily focused on updating the dependencies and migrating the codebase to use `golang.org/x/term` for terminal handling. The contributions involved modifying the build configurations and build rules to support the switch to the new terminal library. Several commits were dedicated to replacing deprecated system calls and adjusting the code to ensure compatibility with the new version.
golangconsoleprogress-bargoterminal
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