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70 followers · 82 following

Achievements

Achievement: Pair Extraordinairex2Achievement: Starstruckx2Achievement: YOLOAchievement: QuickdrawAchievement: Pull Sharkx4Achievement: Arctic Code Vault Contributor

Achievements

Achievement: Pair Extraordinairex2Achievement: Starstruckx2Achievement: YOLOAchievement: QuickdrawAchievement: Pull Sharkx4Achievement: Arctic Code Vault Contributor

Organizations

@truemail-rb @mocktools @RubyWorkout @on-strum @obstools

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bestwebua/README.md

Hi, I'm Vladislav Trotsenko 👋

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Welcome to my personal GitHub profile! I'm a software engineer from 🇺🇦 Ukraine, currently based in Barcelona, Spain. I'm a backend developer with a sysadmin background, passionate about Ruby, Go, and Crystal. Interested in scalable distributed systems, open source, and building reliable software. I enjoy mentoring, collaborating in teams, and occasionally speaking at tech events.

Languages and tools

Ruby Go Crystal Postgres MongoDB Redis RabbitMQ Apache Kafka Git Shell Script Docker CircleCI AWS DigitalOcean

My principles

"Always code as if the guy who ends up maintaining your code will be a violent psychopath who knows where you live." - John F. Woods

I care deeply about code quality — clean architecture, strong testing culture, and well-documented systems. At the same time, I'm strongly business-oriented and enjoy aligning engineering with product goals to deliver features that create real value for users and drive measurable impact.

Open Source

I've been actively working on Open Source Software for over 5 years, while having a full-time job at the same time. During this time I have created truemail-rb, mocktools and obstools organizations to organize these code. Here is the short list of the projects that I have created and currently maintaining on. Many of them have been mentioned on Awesome Ruby, Awesome Go and repeatedly announced on RubyWeekly digest.

Name Language Description
truemail Ruby Configurable framework agnostic plain Ruby email validator/verifier
go-smtp-mock Golang Mock server that can mimic any SMTP server behavior for test environment
truemail docker Docker Lightweight rack based web API dockerized image of Truemail Server
ruby-dns-mock Ruby Library that can mimic any DNS records for test environment
healthcheck_endpoint Ruby Configurable rack middleware for Docker/Kubernetes healthchecks probes
truemail-go Golang Configurable email validator/verifier
ruby-smtp-mock Ruby Flexible Ruby wrapper over smtpmock
heartbeat Golang Configurable multithreaded Prometheus heartbeat (smokeping) exporter
truemail server Ruby Lightweight rack based web API wrapper for Truemail Ruby gem
truemail-ruby-client Ruby Web API client for Truemail Server
rom-mongo Ruby MongoDB adapter for ROM
frs Bash Script for configuring developer stuff on Linux Ubuntu in minutes
truemail-java-client Java Web API client for Truemail Server
truemail-rspec Ruby Truemail RSpec helpers
truemail-crystal-client Crystal Web API client for Truemail Server

Public speaking slides

Business connections

I am always open to new opportunities. Feel free to ask me directly on email or via LinkedIn.

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  1. truemail-rb/truemail truemail-rb/truemail Public

    🚀 Configurable framework agnostic plain Ruby 📨 email validator/verifier. Verify email via Regex, DNS, SMTP and even more. Be sure that email address valid and exists.

    Ruby 1.3k 69

  2. mocktools/go-smtp-mock mocktools/go-smtp-mock Public

    SMTP mock server written on Golang. Mimic any 📤 SMTP server behavior for your test environment with fake SMTP server.

    Go 160 22

  3. mocktools/ruby-dns-mock mocktools/ruby-dns-mock Public

    DNS mock server written on 💎 Ruby. Mimic any DNS records for your test environment with fake DNS server.

    Ruby 65 5

  4. truemail-rb/truemail-rack-docker-image truemail-rb/truemail-rack-docker-image Public

    Truemail rack docker image 🐳

    Shell 29 11

  5. truemail-rb/truemail-crystal-client truemail-rb/truemail-crystal-client Public

    Truemail web API client library for Crystal 📦

    Crystal 3 1

  6. RubyWorkout/frs RubyWorkout/frs Public

    Fast Ruby 💎 setup. Configure your developer stuff on Linux Ubuntu in minutes 🚀

    Shell 6