Vasilis Plavos

About

Polyglot across C#/.NET and Node.js/TypeScript, with Angular/React/React Native on the client and Azure as primary cloud, backed by PostgreSQL and MS SQL. Heavy user of agentic AI tooling (Claude Code, Cline, Codex) integrated into day-to-day development, and comfortable dropping into Python for the AI/ML and data work. Beyond client work, I design, ship and maintain my own products end-to-end — from UnboxGov, a public-data platform, to open-source developer tools and browser extensions used by thousands.

Latest Writing

• 

  [1/2] The First Autonomous AI Hack: How OpenAI Models Escaped Their Sandbox and Infiltrated Hugging Face

  2026 · Jul 24

  In what reads like a plot from a sci-fi thriller, an “autonomous” cyberattack was recently orchestrated by OpenAI models that escaped their restricted…

  read on blog ↗
• 

  I Couldn’t Answer “How Much Does AI Actually Help You?” — So I Measured It

  2026 · Jul 4

  A team asked me how much AI has actually improved my work. I didn’t have a real answer — so I ran a four-day solo sprint, tracked every number, and looked hard…

  read on blog ↗
• 

  Stop Wasting Tokens: Three Smarter Alternatives to JSON for LLM Pipelines

  2026 · May 22

  If you are feeding structured data into an LLM, there is a good chance you are paying a JSON tax — and you do not need a new format to fix it. Introduction…

  read on blog ↗

Experience

• +Finup AG — Founding Full-Stack Engineer (Node.js / React Native / Azure)May 2025 – Jul 2026 · Zurich, CH
• +ifolor AG — Senior Software Engineer (.NET / Azure)Apr 2023 – Apr 2025 · Zurich, CH
• +Alpha Bank — Full Stack Developer (.NET / MSSQL / Angular)Dec 2021 – Mar 2023 · Athens, GR
• +Grekodom Real Estate — Full Stack Developer (.NET / MSSQL / JS)Sep 2019 – Nov 2021 · Athens, GR
• +Brain Insurtech — Founder / DeveloperDec 2017 – Sep 2019 · Athens, GR
• +BCLA Group — Digital Innovation ManagerJun 2016 – Aug 2019 · Athens, GR

Stack

Selected Work

• UnboxGov.com

  2026 · Data Platform

  Creator / Full-Stack

  • Next.js
  • DuckDB-WASM
  • Python
  • HuggingFace
  • Vercel
  visit →

• Profit Center

  2026 · WealthTech

  Founding Engineer / Tech Lead

  • TypeScript
  • Node.js
  • React
  • PostgreSQL
  • Azure
  visit →

• Cookie AutoDelete V3

  2026 · Chrome Extension

  Creator / MV3 Port

  • TypeScript
  • React
  • Redux
  • Manifest V3
  • Webpack
  3,000+ users in week oneAdd to ChromeRepo ↗

• Booking.com Reviews Buddy AI

  2025 · Chrome Extension

  Creator / Full-Stack

  • React
  • Vite
  • Firebase
  • Firestore
  • Gemini
  visit →

• Alpha Bank

  2023 · Banking

  Full-Stack

  • .NET
  • Angular
  • TypeScript
  • Kendo UI
  • MS SQL
  visit →

• ifolor

  2025 · Cloud / Backend

  Senior Software Engineer

  • .NET
  • Azure
  • Docker
  • Microservices
  • CI/CD
  visit →

• YouTube Speech-to-Text

  2024 · Developer Tool

  Creator

  • Python
  • FastAPI
  • Whisper AI
  • Docker
  • Azure
  visit →

• NugetCheck

  2024 · CLI Tool

  Creator

  • .NET
  • NPM
  • NuGet API
  visit →

How I Work

• 01Builder mindset — I ship and maintain my own products end-to-end, several open-source, not just features on someone else's roadmap.
• 02Product-oriented engineering — I optimise for the outcome, not just the ticket.
• 03AI-augmented development — agentic tooling woven into the daily workflow.
• 04Technical leadership — mentoring distributed teams and building review processes from scratch.
• 05Cross-functional collaboration — comfortable with design, QA, and C-level stakeholders.

Education & Certificates

• Coding Bootcamp — Full-Stack Development

  2016

  Athens University of Economics and Business · Athens, GR · Java, MySQL, Bootstrap · 250-hour course

• B.Sc. in Business Administration

  2010 – 2015

  University of Thessaly · Larisa, GR

Certificates

• AI-Agents: Automation & Business with LangChain & LLM AppsUdemy · 2025
• Deploying .NET Microservices with K8s, AKS and Azure DevOpsUdemy · 2024
• Azure Functions, Blob Storage, Azure SignalR and Bicep for DevelopersUdemy · 2023
• Full Stack Web Development with Node.js, Express.js, PostgreSQL, HandlebarsMathesis · 2022
• RESTful API with ASP.NET Core Web APIUdemy · 2020

Beyond Code

• Skiing
• Motorcycle road trips
• Cooking
• Hiking
• Traveling

Get in touch

Open to senior / lead full-stack and founding-engineer roles. The fastest way to learn about my background is to grab this page as Markdown or open it in your favourite assistant.