Selected Work

A public-data platform that surfaces patterns in Greek public procurement — making €380B+ of government spending searchable, with every finding framed as an indication, not an accusation.

• Analyses 300K+ contracts across 60K+ public bodies — flagging 43K+ patterns worth review: bid-splitting, price outliers, vendor concentration, and round-number gaming.
• Reproducible, pure-SQL detection rules over a public dataset published to HuggingFace — anyone can re-run and get the same flags.
• Next.js front-end that queries Parquet directly in the browser with DuckDB-WASM — no backend powering the searches.
• Bilingual (EN/EL) and disclaimer-first by design; ships organisation profiles, leaderboards, and per-flag breakdowns.

A production WealthTech platform built at Finup (Zürich) as Founding Engineer & Tech Lead — it automates revenue and commission allocation across Relationship Managers for external asset managers, replacing fragile spreadsheets for real clients.

• Reconciliation from days to minutes — automated broker-invoice parsing and a rule-based retrocession & fee-allocation engine handle even complex multi-party RM arrangements.
• Real-time per-RM commission visibility and one-click, audit-ready reports — one source of truth for finance and operations teams.
• Architected scalable TypeScript/Node.js services on PostgreSQL with a React front-end and an advanced user-roles system.
• Tech lead for a small team: owned architecture, code review, and CI/CD from GitHub Actions to Microsoft Azure, shipping features directly with clients and stakeholders.

A privacy browser extension that automatically clears cookies and leftover site data from sites once you leave them — a Manifest V3 revival of the classic, open-source Cookie AutoDelete.

• Rescued a beloved tool stranded by Manifest V3 — Chrome's MV2 deprecation broke the original's background-page architecture, so I forked it and refactored the whole extension onto MV3's service-worker model.
• Auto-deletes cookies and leftover site data (localStorage, IndexedDB) when you leave a site, with allow-lists for the sites you want to keep signed in.
• One codebase, two browsers — ships to both Chrome and Firefox through webextension-polyfill.
• Built on TypeScript + React + Redux with a Webpack pipeline and Jest tests; open source (MIT) and credited as a contributor on the original project.

A Chrome extension that helps Booking.com hosts reply to guest reviews in one click — it reads the review and drafts a professional, on-brand response with Generative AI.

• Cuts reply time by up to 85% — and speed compounds: industry data shows replies sent within 5 minutes earn ~92% guest satisfaction (CSAT) versus ~51% after 24 hours.
• Injects a "Generate" button directly into Booking.com's reviews page, then auto-fills the drafted reply into the response box.
• React + Vite front-end on a serverless Firebase backend (Functions, Firestore, Auth) on GCP, with replies generated through the Gemini API.
• Built and shipped solo to the Chrome Web Store; choosing Firebase over a custom backend cut delivery time ~10x.

Full-Stack Developer (.NET / Angular) at Alpha Bank (Athens) — one of Greece's largest banks — modernising core banking systems that serve real customers every day.

• Built a Corporate Loans PWA in partnership with Ernst & Young AG — turning a paper-heavy lending process into a modern, installable web app.
• Developed full-stack features on a microservices architecture with C#/.NET, Angular/TypeScript, Kendo UI and RxJS.
• Applied MVC patterns in Angular for a seamless banking UX across customer-facing applications.
• Shipped through Azure DevOps pipelines, collaborating across bank and consultancy teams.

Senior Software Engineer (.NET / Azure) at ifolor (Zürich) — Switzerland's leading photo-printing service — where I modernised the platform's infrastructure and core backend.

• Led the migration from on-premises servers to a hybrid Azure cloud — cutting costs while improving scalability, monitoring, and resilience.
• Built core C# .NET microservices (SOLID, REST, xUnit) and added real-time communication with Azure SignalR.
• Containerised services with Docker into Azure Container Registry and automated CI/CD pipelines for faster, reliable releases.
• Instrumented with Azure Application Insights and handled on-call, resolving outages fast to keep downtime low.

A containerised FastAPI app that turns any YouTube video into an accurate text transcript with Whisper AI — running entirely on your own machine, no OpenAI key or cloud quota.

• Transcribes any video in ~99 languages — straight from the audio, so it works even when YouTube's own captions are missing, auto-generated, or wrong.
• Self-hosted Whisper: zero per-call cost and full privacy — no third-party API keys.
• Simple HTTP API (GET /?url=…), async by design — kick off a job, then poll for the result.
• Dockerised for one-command local runs or cloud deploy (Azure ACR & App Service).

A command-line tool that audits NuGet packages and their entire transitive dependency tree for known vulnerabilities — before they ship.

• Scans to the deepest layer — where most tools stop at direct dependencies, it follows the full transitive tree to the final node.
• Checks a single package, a .csproj, or a whole directory of projects in one run.
• Cross-platform via npm, no install: npx nugetcheck package Newtonsoft.Json --version 11.0.2.
• Built in .NET against the NuGet API.