Semen Pinigin

Full-stack developer & team lead with 22+ years of experience. Building production SaaS, CRM/ERP systems, fintech billing, and AI-powered products — from architecture to deployment. Open to contract projects, senior/tech-lead full-time roles, and short advisory engagements. Remote-first.

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About

Semen Pinigin is a full-stack developer and team lead with 22+ years of experience, based in Montenegro and working remotely. The core stack is PHP (Laravel, Symfony, Hypervel), Node.js with Fastify, Python with FastAPI, React and TypeScript, PostgreSQL and Redis, Docker and Cloudflare Workers. Most of the work is production SaaS, CRM/ERP, and billing: multi-tenant platforms, Stripe and multi-provider payment gateways, subscriptions, roles, and admin panels. Current projects include NewTales, an AI audiobook SaaS; SHYWAI, a platform that shows how an engineer works with AI; and a Telegram-based education platform for a qigong federation. Every project is delivered through an AI-assisted workflow with Claude Code and Codex: a written spec, agent implementation, independent review by a second model, tests and CI before anything is called done. Open to contract work, full-time senior or tech-lead roles, and short advisory engagements. Email semasping@gmail.com or Telegram @semasping.

Core Stack

PHP · Laravel · Symfony · Hypervel CRM · ERP systems Microservices · REST API Stripe · Billing · Payments PostgreSQL · Redis · Elasticsearch Docker · Nginx · Coolify Python · FastAPI Node.js · Fastify React · TypeScript · Tailwind Claude API · Gemini AI-powered dev workflows

Featured Projects

SHYWAI

Show how you work with AI. An engineer works through a realistic engineering scenario in text with an AI assistant and an AI interviewer. Several independent AI analysts turn the recorded run into a private growth report across six dimensions, quoting the engineer's own words, with no overall score or ranking. The engineer decides what to publish for LinkedIn and a CV.

PythonFastAPIPostgreSQLClaude API

shywai.com →

NewTales

SaaS platform for AI-powered audiobook generation. Users provide a topic, AI writes the story, generates cover art, and produces narrated audio.

React 19FastifyNode.jsBullMQ

newtales.pro →

TG Platform — Qigong Education

Full-featured online education platform. Telegram Bot, Telegram Mini App, and React website all served from a single FastAPI monorepo backend.

FastAPIPythonSQLAlchemyReact

lk.tsygun.ru →

View all projects →