Alexander Sadovsky

5.0

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US$40.00

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ABOUT ME

Javascript Developer

I am Alex, a software developer who loves AI and computing.

I can pick almost any programming language and solve your problems end to end.

Be it full stack role on webservers or porting software, or anything else software related.

Czech, Slovak, English

Bratislava (+02:00)

Joined May 2016

EXPERTISE

JavaScript

10 years experience

I played with javascript long time ago, but I became full time javascript developer in 2014 when I left PHP

Chrome Extension Meteor Blaze TypeScript

HTML/CSS

10 years experience

I started to play with html/css on elementary school in cca 2003

Bootstrap

PHP

3 years experience

PHP was my first programming language, I made some apps in Yii and I worked with very customized joomla for an eshop platform.

Yii

Node.js

5 years experience

My first node app was sails.js websocket backend with MySQL and mozilla thunderbird extension as a client.

Meteor Sails.js

MySQL

3 years experience

I used MySQL mostly with PHP. Now I am more MongoDB guy, but I still remember some queries and I believe I am able to solve the things I ...

I used MySQL mostly with PHP. Now I am more MongoDB guy, but I still remember some queries and I believe I am able to solve the things I need :)

Git

2 years experience

CoffeeScript

1 year experience

REVIEWS FROM CLIENTS

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EMPLOYMENTS

Software Engineer (independent / B2B)

SkyVault OÜ (Estonia)

2016-01-01-Present

Built a linguistic-QA platform end to end: .NET Core REST microservices running the checks, an MCP server exposing them as typed tools...

Built a linguistic-QA platform end to end: .NET Core REST microservices running the checks, an MCP server exposing them as typed tools for AI agents, and a browser extension (TypeScript/MV3, Grunt) that surfaces the checks live inside CAT (translation) tools over the same API — Docker, Kubernetes, Azure DevOps. Later work across PHP/Laravel, Svelte, Bun, Node. AI-native delivery: ships real features daily with coding agents (Claude Code, Codex, OpenCode, Hermes) and self-hosted local models (MLX, llama.cpp) for offline/private workflows. Self-employed contractor since 2016 — B2B-native, zero onboarding friction for a contract engagement.

PHP

Node.js

Server

PHP

Node.js

Server

Laravel

TypeScript

Docker

Grunt

Codex

Kubernetes

.NET Core

Svelte

RESTful API

Azure pipelines

Bunjs

Claude code

CTO

Kuknito s.r.o.

2015-01-01-2016-01-01

Built a price-comparison platform: scraping/crawling backend aggregating dozens of sources into a unified API (Meteor, MongoDB, Elasti...

Built a price-comparison platform: scraping/crawling backend aggregating dozens of sources into a unified API (Meteor, MongoDB, Elasticsearch, Docker). Owned architecture and a small team.

MongoDB

Meteor

Elasticsearch

MongoDB

Meteor

Elasticsearch

Docker

Web Developer

CreativeSites s.r.o.

2014-01-01-2015-01-01

Shipped a Mozilla Thunderbird extension (JS/XUL) with a Sails.js REST backend turning emails into assignable tasks; a real-time task a...

Shipped a Mozilla Thunderbird extension (JS/XUL) with a Sails.js REST backend turning emails into assignable tasks; a real-time task app (PHP, MySQL, Node.js WebSockets); finalized an inherited e-shop appstore.

PHP

Node.js

MySQL

PHP

Node.js

MySQL

XHTML

Sails.js

RESTful API

PROJECTS

agent9View Project

2026

Porting software to plan9 OS. I have ported programming languages, compilers and runtimes: C++, nodejs, python3, and Zig... also ported p...

Porting software to plan9 OS. I have ported programming languages, compilers and runtimes: C++, nodejs, python3, and Zig... also ported pi9 (AI agent)

Reverse Engineering

Porting

Reverse Engineering

Porting