Projects

Products I designed and carried into production. Some are my own, some were built to order.

  1. Groundline

    A RAG service that counts its own savings

    Answer search across your own documents, on Python and FastAPI: pgvector, a LangGraph pipeline, hybrid retrieval, reranking and a semantic answer cache.

    Role: Architecture, backend, quality evaluation and the interface.

    Stack: Python, FastAPI, LangGraph, pgvector, PostgreSQL, Docker

    Open the site How it was built

  2. Toqen.app

    Authentication with the password removed

    A B2B SDK and a mobile app for OIDC and passkey authentication: cryptographic device binding, hardware key storage, a strict token lifecycle.

    Role: Founder: architecture, security model, mobile client and the public SDK.

    Stack: Node.js, TypeScript, OIDC, Passkeys, React Native, Astro

    Open the site

  3. Litseller.com

    Book summaries in eleven languages

    A book summary platform with an LLM pipeline that generates, validates, edits and translates the content with no human in the loop.

    Role: Product and development: platform architecture and the content pipeline.

    Stack: Astro, React, Supabase, OpenAI API, Claude API

    Open the site

  4. Start4Drive.com.ar

    The Argentine theory driving exam

    An app for the theory exam. The official question bank with word by word and full translation into Russian and English, an offline mode and an exam simulator.

    Role: Product and development: the mobile app, the data and the translations.

    Stack: React Native, Expo, NativeWind, Supabase, PostgreSQL

    Open the site

  5. AutoInspect

    A car inspection in one report

    Client project

    A web app for car sourcing: a photo checklist, voice notes with AI transcription and generated PDF reports.

    Role: Built to order: frontend, backend and the report pipeline.

    Stack: Next.js, TypeScript, S3, Whisper API, PDF generation