I build complete web products
— from interface
to production

LLM Failover Proxy

One endpoint that keeps working when an AI provider fails, rate-limits or slows down.

problem

Keep an OpenAI-compatible endpoint answering when a provider rate-limits, returns nothing usable or stalls mid-stream.

my ownership

Routing logic, failure classification, hedged requests, named model lists, CLI and terminal UI, persistence, tests and the npm release.

architecture

Node.js 22 behind one OpenAI-compatible HTTP and SSE contract, provider adapters, Promise.race hedging with AbortController, cooldowns persisted across restarts and zero runtime dependencies.

delivered

Pull request #4 merged upstream: 12 commits and +1,638 lines across 18 files, published as v1.8.0 on npm.

Forked from @ajoly21 and reviewed back into upstream, the shell in the agent lab below serves the same ordered model chain.

Extranet Fimainfo

One platform for telephony operations, reporting and an access-controlled AI assistant.

problem

Bring operational workflows and data from several services and SQL Server estates into one maintainable platform.

my ownership

Architecture and full-stack delivery across the web application, BFF, unified API, RAG service, BI and observability.

architecture

Next.js and Express over four SQL Server estates, FastAPI and Qdrant for permission-aware RAG, Docker, Traefik and OpenTelemetry.

delivered

Five services, around 60 operational screens and roughly 786 commits over 17 months.

Production and source code stay on the company network, the case study documents the architecture without exposing internal data.

ASCoFaçade

A public website and four secure portals for a construction company.

problem

Replace disconnected marketing and site administration with a single role-aware platform.

my ownership

Product structure, UX, frontend, server actions, data model, access control, AI features and deployment.

architecture

Next.js 16, React 19 and Supabase with row-level security, resumable media uploads, document generation and provider-agnostic AI.

delivered

One public local-SEO site plus four secured role portals, in production.

way2buy

A Telegram Mini App for sales, loyalty and cashback.

problem

Unify product discovery, loyalty, cashback, publishing and administration inside the channel customers already use.

my ownership

Product model, Telegram Mini App UX, backend, database, rules engine, scheduler, AI reports and serverless deployment.

architecture

Node.js, Express and SQLite with Telegram identity, bidirectional channel webhooks and idempotent scheduled jobs.

delivered

A zero-build client backed by 19 tables and 81 automated tests, available as a live Mini App.