About Me

Full-stack developer with 10+ years of experience-from first client websites to leading architecture across 50+ enterprise applications.
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I'm Andrei Ksianzou, a full-stack developer with over a decade of experience building web products. I've shipped everything from landing pages to enterprise-scale applications, and led frontend architecture for products with 50+ interconnected apps.

My path started with WordPress sites and PHP integrations, went through the jQuery-to-React transition era, and now includes AI/LLM product development. I've seen enough technology cycles to know what lasts and what's hype.

What I've done

  • Led frontend architecture for a large product suite (50+ applications), establishing coding standards, delivery processes, and technical strategy
  • Built a design system from scratch - UI kit with 70+ components, theming system, Storybook docs, automated releases
  • Migrated legacy codebases from jQuery to modern frameworks without stopping feature development
  • Optimized build pipelines - webpack to Vite migration, 3-4x faster builds
  • Developed AI-powered tools - SEO content editors, LLM brand monitoring products
  • Mentored engineers at all levels, coordinated cross-team work between design, product, and engineering

How I work

I ship in small, safe steps:

  • Start with the business process, not the code
  • Define contracts early - APIs, data models, success metrics
  • Build with good defaults - strong typing, tests where they matter, clear boundaries
  • Add observability from day one - logs, metrics, traces
  • Document decisions so the next person isn't guessing

I've learned that most engineering problems are people and process problems first. Technical solutions come after alignment.

What I care about

  • Pragmatism over patterns — use what works, not what's trendy. Monolith before microservices. Simple before clever.
  • Speed without chaos — shipping fast doesn't mean shipping messy. Good architecture is what lets you stay fast as the product grows.
  • Developer experience — if the build is slow, the tests are flaky, or the code is confusing, the product suffers. I invest in DX because it compounds.

Beyond code

When I'm not building, I'm probably reading about systems thinking, tinkering with side projects, or exploring new tools. I believe the best engineers stay curious.

Feel free to browse my projects if you'd like to work together.

© 2025 Andrei Ksianzou