Konstantin Larionov — fullstack developer and DevOps engineer in Voronezh

Over 4+ years I went from content manager and sysadmin to a developer who writes code, configures servers, and ships to production. I understand how a business actually runs — not just code, but the processes around it.

The past 1.4 years — deliberate practice with AI agents: context engineering, RAG systems, multi-agent orchestration, LLM integration into real business processes. I take a base model (Claude, GPT) and build the context around it so the model actually solves the client's task — not just runs a demo.

In parallel — fullstack on the Veloport team: backend, frontend, content pipeline with GPT copywriting across 22,000+ product cards, catalog support. My personal SaaS — Thumós , on Next.js.

Self-employed (Russia NPD tax regime), TIN 366606549484. Contract with both legal entities and individuals; a fiscal receipt for every payment via the "My Tax" app. Active status verifiable at npd.nalog.ru .

4+years in IT

5projects in production

23k+products processed

Work history

Real backend tenure: enterprise 1С servers, PostgreSQL/MS SQL clusters, IS analytics. Not "took a course" — actually shipped.

February 2025 — present

Fullstack developer · AI integration

Freelance · Larionov's Web Workshop
- Fullstack on the Veloport team: Bitrix-based bicycle e-commerce, 100+ brands, 40+ catalog categories, content pipeline of 22,000+ SKUs with GPT copywriting.
- Client web work: auto-service landing Niva36, local SEO landings, pro bono web showcase for scientific freeware.
- AI integration: RAG systems, multi-agent orchestration, LLM integration into business processes (Anthropic SDK, Claude Code, OpenAI GPT API, MCP). 1.4 years of deliberate practice.
- Personal SaaS Thumós on Next.js + Prisma + PostgreSQL: 18 validated psychological tests, forum, user accounts.
- Automation: parsing (Python / BS4 / Playwright), 1С-Bitrix REST integrations, Excel catalogs of 23,000+ items.
- DevOps: Linux servers, Nginx, Docker, PM2, SSH/rsync deploys, SSL.
- Building a personal context-management framework for AI agents: long-term memory, sub-agent orchestration, autonomous task loops — applied in personal and client projects.
Anthropic SDK Claude Code RAG MCP Next.js TypeScript Python 1С-Bitrix PostgreSQL
October 2023 — February 2025

Senior 1С support engineer (tier-2)

MTS Digital
- Resolution of complex IT incidents on enterprise infrastructure.
- Administration of 1С server clusters and databases (PostgreSQL, MS SQL Server).
- 1С code debugging, performance issue resolution.
- Integration buses, PowerShell automation scripts.
1С 8.3 PostgreSQL MS SQL PowerShell clustering
December 2021 — October 2023

Application systems administrator

MTS Retail
- User administration in Active Directory, Oracle, 1С.
- SQL data analysis queries, integration bus monitoring (XML).
- Routine task automation via PowerShell.
Active Directory Oracle SQL PowerShell

References

Contacts available on request: TRIAR Group · MTS Retail · Veloport.

Stack by category

Not "familiar with" — what I actually use across the projects in portfolio .

AI / Context

Anthropic SDK
Claude Code
OpenAI GPT API
RAG
multi-agent
memory systems
MCP
prompt engineering

Frontend

React
Next.js
TypeScript
Vue.js
HTML5
CSS3
responsive

Backend

Node.js
Python
PHP (Bitrix)
REST API
WebSocket

Databases

PostgreSQL
MySQL
SQLite
MS SQL Server
Prisma ORM
SQL

DevOps

Linux (CentOS, Ubuntu)
Nginx
Docker
PM2
SSH/rsync
SSL
PowerShell

Integrations

1С-Bitrix
1С:UT
Bitrix24 REST
Telegram Bot API
YooKassa
parsing (BS4, Playwright)

SEO & content

schema.org
Open Graph
Yandex.Metrica
Google Analytics
product copywriting
SEO architecture

Got a project? Tell me — I'll reply within a day.

No phone calls, no 10-page proposals. Just text and facts.

Message me See portfolio

Konstantin Larionov — fullstack developer based in Voronezh