Oleksii Siniaiev
RUUAESEN
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RUUAESEN

Available for hire

Senior full-stack engineer · 10+ years in production

I work on Laravel, Django and complex WordPress projects.

Mostly backend: SaaS billing, APIs, integrations, legacy code, performance and infrastructure. I can build something new or jump into an existing project and figure out what needs fixing. AI agents help with the routine, and I review every change myself.

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Laravel / PHP Django WordPress Stripe AWS / Docker AI agents & automation
Oleksii Siniaiev

Products that need to keep working after launch.

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

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

SaaS, publishing and commerce. A closer look at the systems I have helped build and maintain.

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
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Services

Where I can help

Building something new, improving a running product, or making the development process work better.

WordPress & WooCommerce rescue

Your site is slow, updates break things, or customers cannot complete checkout. I find the real cause, fix the critical path, and leave you with a site your team can safely operate.

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Laravel & SaaS development

Turn a product idea or an unfinished platform into software people can actually use and pay for, including subscriptions, onboarding, dashboards, integrations and reliable releases.

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AI tools & workflows

I set up AI coding agents for your team: Claude Code or Codex with project context, rules, subagents and checks, so they help with real tasks instead of producing code nobody trusts. Review and responsibility for changes stay with engineers.

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Legacy modernization

Keep the business running while an old PHP, Laravel, or WordPress system is made safer and easier to change. Improvements are delivered in controlled steps, not as a risky big-bang rewrite.

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How I work

AI agents do the legwork. Decisions stay with me.

I use Claude Code, Codex and my own self-hosted agents every day, and I set up the workflow around them: the agent knows the project, works inside clear limits, and every change gets checked before it ships.

  1. Project context lives in AGENTS.md and CLAUDE.md, not in a chat
  2. Subagents for search, planning, review and browser tests
  3. Every change is reviewed and tested before production
More about me →

Latest

From the blog

Notes from real projects: Laravel, WordPress, AI agents in development, and what broke along the way.

All articles →

Work together

Let’s work on what’s next.

Tell me about your product, your team, and what needs to change. I’m open to senior engineering roles and project work.

Discuss a project → [email protected]

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