I integrate AI into production.
RAG, agents, cost-aware model routing, self-hosted inference — shipped and running.
My strongest skill isn't writing prompts — it's knowing where AI actually helps and where it doesn't. RAG vs fine-tune vs rules vs a human in the loop: I call that call, then own the build.
Python, Claude / GPT / Gemini APIs, RAG (pgvector, Qdrant), agents & tool-use, self-hosted LLMs (llama.cpp, Ollama), cost-aware model routing, FastAPI / PostgreSQL, Docker / GitHub Actions / Caddy.
Open to offersAI / LLM Engineer role, remote or EU relocation. See live work in Projects, and how I run everything in Infrastructure.
Live in production
Support & AI Analytics Platform
Unified communications platform for an e-commerce client: 4 data streams + 3 bots.
Designed the AI system and wrote the detailed development spec: four data streams (calls via MTS Exolve, marketplaces Ozon/WB/YM, messengers Telegram/MAX, the 4PDA forum) in one interface with semantic search across the whole base (Qdrant across 8 collections, Gemini via OpenRouter, monitoring via Langfuse). The AI answers requests in three bots (operator, support, MAX) drawing on the whole knowledge base and escalating to an operator by button or on low confidence, aggregates marketplace/messenger conversations into AI summaries with semantic search over them, transcribes support calls into short summaries, generates replies to marketplace reviews and questions, and builds charts on sales and support. Directed the embedding-model migration — retrieval quality rose to 0.82 (from 0.59). Delivered with full system documentation.
Sales & Negotiation Coach
AI trainer for sales calls & negotiations.
Telegram bot + Mini App: the user records a full sales or negotiation conversation as a voice message; the system transcribes it and returns structured coaching via LLM — what went well, what to improve, recommended next steps. Designed the system and wrote the development spec; set up the prompts and model routing via OpenRouter (Gemini Flash 3).
Virtual-Pet Mini App Game
Telegram Mini App game built around several AI integrations.
Owned the full decomposition, the ICE-prioritized backlog, sprint planning, and specs across ~3 developers + a designer. When a photo of a real pet is uploaded, an image model (Nano Banana 2 via OpenRouter) generates a virtual version of it; extra skins are generated on demand as the paid monetization loop. A meme mini-game runs a short pipeline: one LLM image generation (OpenRouter, combined prompt) split into two variants, then local background removal via RMBG-1.4 ONNX in parallel, returning two finished images (PNG + WebP). An audio handler records the pet's voice; a model strips extraneous noise and applies the cleaned sound in-game. Multi-pet system, payments, mini-games.
t.me/dogidog_game_bot →Assistant Operations Platform
Web + Telegram workspace for assistants and entrepreneurs.
CRM, HR automation, finance, group chats, task control, and contract generation, with an AI task delegator (assistant↔entrepreneur matching is one feature among many). Designed the rebuild of the Telegram bot into a single AI agent (detailed development spec): it knows the team structure (roles and reporting lines), automatically calculates ratings in the relevant chats, logs employee mistakes by context, converts free-text assistant requests into tasks, and returns context-aware replies about the work process. Tuned the AI assistant's prompts to the client's required specifications. Later initiated moving task tracking off Google Sheets into the web app: records, reporting, and dashboards in one place. Ran the roadmap and sprint planning across two developers (web + Telegram bot).
Legal-Tech Case Platform
Legal-tech platform for a client: case-law analysis by district, document generation from templates.
RAG search over case law (Qdrant), document generation from templates, cross-platform auth.
Beauty-Salon Booking Consultant
AI consultant for a beauty-salon chain.
Finds open slots and books consultations — bookings up 43%.
Real-Estate Auction Aggregator
Telegram bot aggregating real-estate auction listings from open sources.
Aggregates listings from open sources, with new-listing alerts.
Browser Subtitle Translator
Browser extension for learning English: live subtitles over any video, with instant translation.
Overlays subtitles directly on top of whatever video is playing in the browser and translates them on the fly, powered by ChatGPT.
// plus several other client AI/LLM projects — these are the ones most interesting by stack
Nexus & Arcana
Telegram AI agent + React miniapp system: ☀️ Nexus (tasks & productivity) and 🌒 Arcana (esoteric practice & witchcraft).
Nexus (personal assistant: tasks, finances, inventory, notes) and Arcana (CRM for my tarot practice) share a Mini App. Natural-language control: a two-tier classifier (regex pre-filter → Haiku few-shot) routes free-form input across 11+ domains. Cost-aware routing keeps Haiku as default and reserves Sonnet for high-value reasoning (budget analysis, tarot interpretation, summaries) — locked in by static regression tests, so the cheap path can't silently slide to an expensive model. Every model output is wrapped in validate → retry → fallback with JSON-only parsing. Persistent memory across sessions; multimodal via Vision (receipts → expenses) and Whisper (voice). Arcana adds RAG over a multi-collection base — an esoteric grimoire as the knowledge base, spread structures, and per-client session context — so interpretations stay grounded and consistent with how I read. A companion Mini App (React + Vite + FastAPI) gives each bot a tabbed GUI over the same backend.
github.com/dontkaiad/nexus-arcana →job-hunter-agent
Telegram bot + React dashboard for automated job search.
LLM scoring with cost-aware routing against a structured candidate profile. A pluggable source abstraction ingests Telegram channels and public job APIs behind one interface; an add-by-URL pipeline runs any vacancy link through the full scoring flow with an SSRF guard. Self-hosted: PostgreSQL, Caddy/HTTPS, Telegram-login auth, container healthchecks and ops alerting.
github.com/dontkaiad/job-hunter-agent →klgpff — multi-model chat router
Cost-optimized creative-writing bot.
A Haiku classifier routes each request across Opus / Sonnet / Haiku by task type, with manual override. Prompt caching (cache_control = ephemeral) on the system + facts block cuts repeat-turn input cost to ~10%. Per-chat cost tracking across all models with input / output / cache-read / cache-write breakdown. History compression via summarization; persistent fact memory with semantic retrieval over pgvector; per-chat system prompts persisted on disk. Full technical write-up in ARCHITECTURE.md: diagrams, message lifecycle, trade-offs.
github.com/dontkaiad/klgpff-bot →Local LLM Sims
A local-LLM sandbox on 7 networked Raspberry Pi with local Llama (nano models).
A Sims-style multi-agent simulation where each device runs an autonomous agent. Built to prove out the self-hosted / local-inference skill hands-on, not just in theory.
heylark_cats
Telegram bot + Mini App for remote cat-sitting coordination.
Built while away from home for two months to coordinate a cat-sitter without manual check-ins. A bot tracks recurring and one-off care tasks (feeding, litter, water, plus optional bonus chores) and awards a points-based reward currency; the owner gets a quiet activity log instead of a ping per task. A companion Mini App (React) mirrors the same data with a resident-facing dashboard and a ported care guide. Access is grants-based and app-scoped (sitter vs. owner-only sections), authenticated two ways: Telegram initData inside the Mini App, and a centralized Telegram-Login SSO shared across my other products (one cookie domain, one grants table, each product gates independently). A RAG support layer (pgvector + Haiku, "ask about the flat/cats") is rolling out behind a feature flag.
github.com/dontkaiad/heylark_cats →// more self-hosted bots and Mini Apps live on heylark.dev — this is a selection, not the full list
How it's run
One VPS. No DevOps team, no shared ops — I set it up, secured it, and keep it running.
Beyond work
Compulsive automator of my own life — Nexus is a project that runs mine, not just a portfolio piece.
Into esoterica, urban exploration, and the music industry.
10k+ hours in League of Legends, ADC main, peak Master tier — the same hyperfocus and mechanical grind I bring to building.
Owned by three cats.
ADHD brain — it's why I automate everything obsessively instead of doing it by hand twice.
Hire the person who ships this.
I'm looking for the role where integrating AI takes real weight off people — fewer manual hours, cheaper pipelines, systems that quietly do the boring work. If that's the problem you're hiring for, we should talk.
Remote, or relocation — Europe (PL / CZ / RS pref.).
"The logs and the cards say the same thing once you can read them."