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Engineer · AI agent fleet
2026 · taking projects

AI services and automation, built end to end — in weeks, not months.

I lead your project from idea to launch and beyond. To move at the speed of a whole team, I use my own fleet of AI agents: they take on research, code, tests and deployment, while architecture, decisions and quality stay with me.

agent-build · project buildlive
modulesdata flowsR A C V T D · agents01 · research · 0%
Brief to launch
2–3 wks
typical
Services in prod
0+
shipped
Agents in the fleet
0
specialised
Point of contact
0
direct, no middlemen

“I don't assemble a team for each task — I already run a fleet of AI agents. So you get the speed of a team while dealing with one person who owns the result.”

§ 01

What I do

4 directions

From a single automation to a turnkey app. I own the task end to end — from framing and prototype to production deployment, testing and maintenance.

01

AI in your workflows

Process audit, finding automation points, a fast pilot on real data and an impact estimate before scaling.

auditpilotROI
02

Turnkey apps & services

Building a product from prototype to production: backend, interface, inference, monitoring and operations.

MVPprodmonitoring
03

Agents & automation

AI agent pipelines for routine: document processing, support, reporting, research, quality control.

multi-agentpipelinesworkflow
04

Integrations & RAG

Connecting LLMs to data and systems: knowledge bases, RAG, voice, documents, vision, internal API links.

RAGLLM-APIvision · voice
§ 02

My agent fleet

Under my lead

Not a “developer with ChatGPT”. I run a fleet of specialised agents: each covers its own area, while I keep the architecture, quality and deadlines.

Fig. 1 · Agent fleetProject lead · 6 stages
00 · leadSergey KostarevI set the tasks, make the key decisions, check the result and own it.
01 · researchResearchRequirements, domain analysis, choosing the approach.
02 · architectArchitectureDesign, stack selection, breakdown into steps.
03 · coderBuildCode generation per module — in parallel.
04 · reviewCode reviewRefactoring, security, standards compliance.
05 · qaTestsMulti-stage runs, including complex real-world scenarios.
06 · devopsDeploymentContainerisation, CI/CD, production and maintenance.
Flow: brief → prodStages 01 → 06 run sequentially
§ 03

How a project runs

Brief to prod

A transparent rhythm with short iterations. You see working results in the first week — not a deck a month later. Every result goes through multi-stage testing, including complex real-world scenarios, and my personal review before launch.

Day 0

Brief & goal

I unpack the task, success metric and constraints. Scope locked.

Day 1–2

Prototype

A working prototype on your data — I test the hypothesis for real.

Week 1

MVP

A service with the key scenario, interface and basic monitoring.

Week 2–3

Production

Real-world scenario testing, my sign-off, deployment, documentation and handover.

Next

Maintenance

Support, improvements and scaling driven by feedback.

§ 04

Cases

Selected

A few projects I built with my agent fleet. The structure and metrics are a reference for your scenario.

RAGscreenshot · 16:10
Case 012 wks

Knowledge-base assistant

Search and answers across 12,000 internal documents with source links and hallucination control.

RAGFastAPIpgvector
−70%search time
94%accuracy
Agentsscreenshot · 16:10
Case 0210 days

Ticket processing pipeline

Classification, enrichment and routing of inbound requests by a fleet of agents with no operator in the loop.

multi-agentqueuewebhook
×6throughput
24/7no pauses
Voicescreenshot · 16:10
Case 033 wks

Voice assistant

A phone bot with speech recognition, scenarios and handover of complex dialogues to a live operator.

STT · TTSrealtimeSIP
62%auto-answered
1.2slatency
§ 05

Stack

Tools

I pick tools for the task, but lean on a proven set for speed and reliability.

Models & agents
LLM-API · open modelsAgent orchestrationRAG · vector searchFunction calling
Backend
Python · FastAPINode.jsPostgreSQL · pgvectorRedis · queues
Frontend
TypeScript · ReactNext.jsTailwindWebSocket · streaming
Data & infra
Docker · CI/CDCloud · serverlessObservabilityVector DBs
§ 06

Let us talk about your project

Direct, no middlemen

Have an AI service idea or a process that is ready to automate?

Write to me directly — I answer myself, within a day. Describe the task in two sentences and I'll come back with a timeline estimate and an approach. The first prototype is usually ready 1–2 days after the brief.