MSDS @ Columbia · ex-AI Developer at Hostinger

Tomas
Jankauskas

Hi, I'm Tomas, a Data Science master's student at Columbia University and formerly an AI Developer at Hostinger, one of Europe's fastest-growing companies, where I pioneered company-wide adoption of the Model Context Protocol and built LLM-powered products.

I came up as a frontend engineer and started out as a physicist, which still shapes how I break down hard problems. Now I'm going deeper on data science and ML systems.

LinkedIn ↗ GitHub ↗ Download CV ↓
open to roles MSDS student · Columbia University

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Tomas Jankauskas
New York, NY
Columbia University

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Projects

JavaScript · Claude API · Telegram

AI Job Hunter

Local-first job hunter that scrapes real openings from free career-site APIs, ranks them against your résumé with Claude, and pings you on Telegram. Runs itself daily.

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TypeScript · Anthropic & OpenAI APIs

Loopbreaker

Kill switch for AI agents stuck in infinite loops. A local proxy for Anthropic and OpenAI-compatible APIs with a live dashboard and post-mortems.

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TypeScript · Ollama · RAG

DocChat

Chat with a PDF or pasted text — fully local RAG via Ollama, no API keys, nothing leaves your machine.

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Experience

Oct 2025 - Jun 2026
MOST RECENT

AI Developer

@ Hostinger International · Lithuania / Remote
one of Europe's fastest-growing companies · FT 1000, six years running
  • Pioneered company-wide adoption of the Model Context Protocol (MCP) - building Python tooling and contributing to Hostinger's NLP assistant, Kodee - to help automate and deflect 68% of routine support interactions across 4.6M global users, supporting €9M in annual operational savings
  • Spearheaded multi-locale A/B text experimentation by building custom MCP servers that integrated Amplitude telemetry with live UI adjustments via Claude Desktop
  • Replaced free-form text configurations with structured JSON outputs enforced via strict Pydantic validation schemas, reducing production pipeline formatting exceptions from 28% to <0.5%
  • Led weekly technical presentations on NLP and agentic architectures - analyzing 20+ foundational research papers to accelerate R&D knowledge transfer across the engineering division
Mar 2021 - Oct 2025

Senior Frontend Developer

@ Hostinger International · Kaunas, Lithuania
  • Led the frontend development and implementation of the centralized multi-site dashboards and client collaboration tools for the "Hostinger Pro Panel" (Agency Hosting) launch
  • Engineered an Abstract Syntax Tree (AST) Python refactoring script that automatically parsed and migrated 1,000+ hardcoded English frontend files into i18n translation slugs in under 3 minutes, bypassing over 80 hours of manual labor
  • Designed and implemented hPanel customer onboarding interfaces using Vue 3, driving a 20% relative increase in user registration conversion rates across 4.6M active clients
  • Optimized core web properties on Nuxt (lazy rendering, advanced caching) to LCP <1.2s - securing a market-leading speed rank and a 15% expansion in organic search traffic
M.S. in Data Science
Columbia University · New York
M.S. in Computer Science
Donghua University · Shanghai
B.S. in Applied Physics
Vilnius University · Top 15% GPA · Erasmus exchange, VU Amsterdam

What I work with

AI & Machine Learning
LLM APIs MCP RAG Prompt Eng. PyTorch Vector Search
Frontend
Vue 3 / Nuxt React / Native TypeScript JavaScript
Backend & Data
Python FastAPI Node.js Scrapy SQL / Mongo
Cloud & Tools
AWS Docker GitHub Actions Grafana Amplitude

Life outside the editor

When I'm not shipping code, I'm usually somewhere new, coffee nearby. I trained as a physicist, so I never really stopped being curious about how things work: space, systems, and the messy edges where AI meets the real world.

What I'm chasing next: going deeper on data science and ML systems at Columbia, and building tools that make powerful tech feel effortless for the people using it.

Travel Physics & space Side-projects Basketball Fitness Pilates Reading
26
countries visited
Lithuania · China · South Korea · Japan · Netherlands · and more
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