Independent AI engineer · freelance

AI that earns its keep.

Production-grade AI agents, RAG systems, and automation — designed and shipped end to end.

01 — Flagship

The proof, live.

Live · production SaaS

Echofy

An AI employee for Instagram shops.

A production multi-tenant SaaS I designed and shipped solo. It reads a shop's Instagram DMs and answers product questions, qualifies buyers, and handles support 24/7 — in the customer's own language, across text, images and voice.

It's live and running in production right now. Don't take my word for it — try it yourself.

Open the live demo
echofy / architecture
apiFastAPI + Celery task queue
dataPostgres, row-level multi-tenancy
ingestInstagram DM webhooks
brainMultimodal RAG over each shop's catalog
langAuto-detect: Ukrainian · Russian · English
verifyFormal verification (Z3) on billing & ownership
deployDockerized · VPS behind Caddy
02 — How I ship

I use AI to build AI.

Echofy is a full production SaaS I shipped solo. That's only possible because I turn the same agentic techniques I build for clients inward — onto my own engineering. This is the working method behind the build.

01

My own agent process

Custom skills and subagents I built to run production development end to end — solo, at the pace of a team.

custom skills · subagents
02

Wired into real systems

MCP servers connect my agents straight to the tools, data and APIs a real build touches — not a sandbox.

MCP servers
03

Orchestration at the frontier

I work with Claude Code's newest layer — Dynamic Workflows: plan a job, fan it across parallel subagents, self-verify, merge.

Dynamic Workflows
03 — What I offer

Practical AI, built properly.

/ 01

AI Knowledge Assistant

Finds and delivers answers across a team's documents and systems. Covers data and process analysis, a custom RAG architecture, a web or messenger interface, and team onboarding.

/ 02

AI Sales Chatbot

A 24/7 sales agent that answers product questions, qualifies leads, books meetings, logs to a CRM, and hands off to a human when needed.

Optional: Stripe payments · custom integrations

/ 03

Custom AI Workflows

Automates repetitive work like document sorting, email and form processing, and reporting. Covers process analysis, building the workflow, integrations with existing tools, and documentation/handoff.

05 — Expertise

What I work with.

01

Agentic AI Development

Multi-agent systems that plan, delegate to subagents, call tools, and verify their own work.

02

Advanced RAG Systems

Hybrid retrieval and reranking that answers with the source attached.

03

Workflow Automation

Repetitive back-office work wired end to end.

04

Backend & API

The FastAPI services and data layer underneath it all.

05

LLM Eval & Tracing

Measuring answer quality and watching every call in production.

06

Prompt Engineering

Prompts tuned and tested against real cases, not guessed.

01

Orchestration

How agents plan, hold state, call tools, and connect to real systems.

LangGraph · LangChain · PydanticAI · MCP · DSPy
02

Retrieval

Finding the right facts in a sea of documents.

LlamaIndex · Qdrant · BM25 · FlashRank
03

Evaluation

Proving the answers are good — and watching them in production.

Langfuse · Ragas · DeepEval · Promptfoo
04

Serving

Running models and background jobs fast, at scale.

vLLM · Celery · Docker
05

Foundation

The dependable backend everything sits on.

Python · FastAPI · Postgres
06 — About

Who's behind it.

Roman — independent AI engineer

I'm Roman — an AI engineer who ships real systems, not toys. Echofy is a full production SaaS I built alone, from webhooks to formal verification to deployment. Now I help businesses put the same kind of AI to work — fast, and done properly.

— Roman
07 — Let's talk

Let's put AI to work.

Bring me a problem worth automating. I'll scope it, build it end to end, and ship something that holds up in production.