Yoni Shieber — Software Developer

I used to chase hackers for the Israeli Police. Now I build backend systems and write tools so AI agents can do my job faster than I can.

I'm a software developer at Optimove, building backend services, data pipelines and internal tools with TypeScript, NestJS and React. Before I started building things for a living, I spent a few years breaking them — investigating cybercrime for Israel's Lahav 433 unit.

These days I'm deep into AI-powered development workflows. I built a Claude quota tracker for VS Code (because knowing how much AI you've consumed is peak developer self-awareness) and an MCP server that lets AI agents talk to public APIs. I believe the best developers aren't being replaced by AI — they're the ones building the bridges between AI and everything else.

B.Sc. Computer Science from the Open University. Fueled by curiosity, black coffee and the quiet satisfaction of a clean git log.

Experience

• Software Developer — Optimove

  2025 — Present

  Building and maintaining backend services and internal tooling for a customer-led marketing platform, with a focus on data-heavy pipelines and reliability.

• Fullstack / Backend Developer — Vim Healthcare

  2022 — 2025

  Built backend services, data pipelines and internal tooling for a healthcare platform used by millions. Implemented Auth0 integrations, automated E2E testing with Playwright, and optimised CI/CD workflows.

• Cyber Crime Investigator — Israel Police — Lahav 433 Cyber Unit

  2019 — 2022

  Investigated complex cybercrime cases involving fraud, phishing and blockchain-related offences. Developed custom Python tooling for network forensics and data analysis. Earned OSCP. Learned that criminals also write terrible code.

• Developer & Co-Founder — Google for Startups Accelerator — Privasee

  2021

  Selected for Google's accelerator programme. Built a spy-detection device designed to protect at-risk women from surveillance, combining hardware sensors with software analysis to identify hidden recording devices.

Projects

• LiLimit

  Chrome extension that caps how long — and how often — you visit a site.

  TypeScript, Chrome MV3, Jest, Webpack, GitHub Actions

  SourceChrome Web Store

• Claude Quota Tracker

  VS Code extension showing live Claude usage in the status bar.

  TypeScript, VS Code API, ESLint

  SourceVS MarketplaceOpen VSX

• bounty-catcher

  Recovers live secrets from deleted Git objects across bug-bounty orgs.

  Python, TruffleHog, SQLite, GitHub API, Telegram

• fingerprintDriver

  Reverse-engineering a Goodix USB fingerprint sensor into a Linux driver.

  C, libfprint, Python, pyusb, pycryptodome, USB protocol RE

• koi

  Privacy extension that flags network anomalies and risky extensions locally.

  TypeScript, Chrome MV3, Jest, Playwright, Webpack

• epsiclaw

  An LLM agent loop rebuilt in ~515 lines — "nanoGPT for agents".

  Python, OpenAI-compatible API, Telegram

  Source

• ghosts-tracker

  Scores Israeli R&D job postings by how long they have been haunting the board.

  TypeScript, Next.js, Node.js, Docker Compose, npm workspaces

• chaosSystem

  A URL shortener built as an excuse to instrument everything properly.

  NestJS, TypeScript, TypeORM, PostgreSQL, OpenTelemetry, Prometheus, Grafana

  Source

• tinyBrowser

  A web browser written from scratch in Python: parser, DOM, layout, paint.

  Python, tkinter, requests, PIL

• nanoclaw

  Contributor — an AI assistant that runs each agent in its own container.

  TypeScript, Docker, pnpm workspaces, Vitest

  Sourcenanoclaw.dev

• weather-mcp

  A Model Context Protocol server exposing live weather as an agent tool.

  TypeScript, MCP SDK, Docker

• DForce

  Anti-phishing tool that poisons stolen-credential databases with junk.

  Python, Selenium, selenium-wire, Tor

  Source

• Customer Service Analyst Agent

  A LangGraph ReAct agent that answers questions about a support dataset.

  Python, LangGraph, MCP, Streamlit, LLM

  Source

• GNOME Multiple Paste

  A clipboard history manager for the GNOME Shell — the real desktop.

  JavaScript, GJS, GNOME Shell, GSettings

  Source

• Quicker

  The precursor to DForce — a targeted strike on a single phishing site.

  Python, Automation

  Source

Skills

• Languages: TypeScript, Python, JavaScript, Java, C, SQL
• Backend: Node.js, NestJS, FastAPI, GraphQL, REST APIs, Airflow
• Frontend: React, HTML / CSS, Tailwind, Responsive Design
• Infrastructure: Docker, Kubernetes, AWS, CI/CD, PostgreSQL, Redis
• Observability: OpenTelemetry, Prometheus, Grafana
• Security: OSCP, Network Forensics, Penetration Testing, Auth0
• AI & Tools: Claude Code, MCP Servers, LLM Agents, Playwright, Git

Contact

• GitHub
• LinkedIn
• Email