Alexander Sadovsky
Senior full-stack engineer with 15+ years of production experience, working B2B through my own EU company (SkyVault OÜ, Estonia) since 2016.
What I do best:
• Backend services and integrations: REST APIs, OAuth/OIDC (Entra ID / MSAL), webhooks, third-party and enterprise systems, in TypeScript/Node.js, C#/.NET, PHP/Laravel and Python.
• Platform work: Docker, Kubernetes (Helm, zero-downtime rollouts), Azure DevOps CI/CD, Prometheus/Grafana, SQL Server, MySQL, MongoDB, Elasticsearch.
• AI engineering: MCP servers that expose production APIs as tools for agents, OpenAI/Anthropic API integrations, my own Go agent runtime with a terminal UI (github.com/Alino/agent9), local models (MLX, llama.cpp).
Main engagement: I built and run a linguistic-QA platform for a global language-services provider: .NET microservices, an MCP server and a TypeScript browser extension, used by thousands of linguists in 160+ languages.
I work best async and ticket-driven: clarify in writing, ship through clean merge requests, keep things documented. Based in Bratislava (CET), comfortable with US Eastern overlap.
REVIEWS FROM CLIENTS
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.
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.
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.