Oleksii Siniaiev
RUUAESEN
Main navigation
RUUAESEN

Senior full-stack engineer

I build production-grade SaaS, Laravel and WordPress systems.

I own backend architecture, billing, infrastructure, and frontend delivery for web systems that need to stay maintainable after launch.

10+ years Stripe billing AWS/Docker delivery Laravel + WordPress
View case studies Download CV
Oleksii Siniaiev

Worked on production systems for

  • Artnet News high-traffic art media platform
  • WebSpellChecker SaaS and commercial platform
  • DHL Consulting enterprise consulting projects
  • WGames product engineering

Portfolio

Selected work

Real projects shipped — from content platforms to SaaS products.

SAAS PLATFORM

WProofreader SaaS — Subscription Management Platform

Lead Full-Stack Engineer

Full SaaS subscription platform built from scratch: Stripe billing via Laravel Cashier, OAuth sign-in with Jetstream team management, Sanctum API credentials, and PostHog / ApexCharts usage analytics — on Laravel 12, Inertia.js, Vue 3 and Docker.

Designed the Laravel 12 backend and Inertia + Vue 3 (Tailwind) frontend: Cashier/Stripe subscriptions, Socialite OAuth, Jetstream teams, Sanctum API tokens, PostHog analytics, AWS S3, and Docker-based CI/CD.

  • AWS
  • Docker
  • Inertia.js
  • Jetstream
  • Laravel
Read case study → Visit live site
MEDIA PLATFORM

Artnet News — Global Art Media Platform

Full-stack engineering for one of the world's largest art media platforms: 11 custom WordPress plugins, a Leaky Paywall metered subscription system, AMP, Redis caching, Swiftype search, and multi-channel distribution to Apple News and Facebook Instant Articles — on a Composer/Timber-Twig stack.

  • AMP
  • Bedrock
  • Cloudflare
  • Cloudinary
  • Composer
Read case study → Visit live site
All projects →

Engineering capabilities

What I build with

Backend

  • Laravel
  • PHP
  • MySQL
  • Redis
  • REST APIs

Frontend

  • Vue.js
  • React
  • TypeScript
  • Tailwind CSS

Infrastructure

  • AWS
  • Docker
  • GitHub Actions
  • Linux
  • CI/CD

Product & Commerce

  • Stripe
  • WooCommerce
  • Subscriptions
  • Licensing
  • Analytics

Latest

From the blog

Technical articles based on real work: Laravel, architecture, performance, integrations, and practical engineering decisions.

Articles Jun 21, 2026 11 min read

How to tell your AI agent lost context: a state-canary in AGENTS.md and CLAUDE.md

A state-canary is a simple observability pattern for AI coding agents: one state line per response helps you catch context drift, lost scope, and…
Articles Jun 14, 2026 19 min read

Part 3. A month with an AI journal: finding patterns in sleep, stress, and workouts

How to analyze an AI journal after the first month: transcription fixes, honest reflection with cited sources, Obsidian dashboards, cost, and privacy.
Articles Jun 14, 2026 26 min read

Part 2. Hermes Agent + DeepSeek on Ubuntu: a complete Telegram AI journal setup

A step-by-step setup for Hermes Agent and DeepSeek on Ubuntu: a locked-down Telegram bot, local faster-whisper, a Markdown vault, private Git, and a daily…

All articles →

About

How I work

I've spent 10+ years building systems that need to stay reliable long after launch. Here's what that looks like in practice.

  1. Own the whole system
  2. Make production boring
  3. Keep code maintainable
More about me →

Work together

Have a production system that needs senior ownership?

Best fit: Laravel/SaaS platforms, complex WordPress systems, billing integrations, performance work, and production debugging.

Email project brief → LinkedIn

Based in Spain · Remote-friendly · EN/RU/UK/ES