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  • hello@chepio.tech
  • 🇦🇹 +43 664 138 42 58🇺🇦 +38 093 147 50 37
  • Leoben, Austria
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© 2026 Denys Chepiha. All rights reserved.

Web Development Services

End-to-end engineering from architecture to deployment - delivered from Leoben, Austria to clients worldwide

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View all servicesHow it worksA website built for your business

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Clear scope, honest estimates, and code built to last.

Frontend Development

I build pixel-perfect, high-performance UIs with React and Next.js - including server-side rendering (SSR), static generation (SSG), and the App Router.

ReactNext.jsTypeScriptJavaScript
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Fullstack Engineering

I design and ship end-to-end systems with Node.js, NestJS, PostgreSQL, and MongoDB - REST and GraphQL APIs built to scale.

Node.jsNestJSExpressTypeScript
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AI Integration

I integrate large language models (LLMs) into products: retrieval-augmented generation (RAG) pipelines, vector search, and AI-driven automation.

OpenAIClaudeLangChainpgvector
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Performance Audit

I audit Core Web Vitals, cut JavaScript bundle sizes, and deliver measurable load-time improvements with before/after numbers in a written report.

LighthouseWebPageTestChrome DevToolsBundle Analyzer
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Technical Mentoring

I coach developers 1-on-1 and run team workshops, architecture reviews, and growth programs that take engineers from junior to senior.

ReactTypeScriptNext.jsJavaScript
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Tech Consulting

I advise on architecture, stack selection, legacy modernization, and technical due diligence - including fractional CTO engagements.

ReactNext.jsNode.jsTypeScript
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From idea to production, without blind spots.

Every project follows a transparent delivery system. You always know what is being built, why it matters, what comes next, and where the project stands.

  1. We define the real problem, business goals, users, constraints, risks, and success criteria before committing to a solution.

    Outputs

    Project brief · Risk map

  2. I turn discovery into a clear scope, technical direction, delivery roadmap, timeline, and written estimate.

    Outputs

    System direction · Delivery roadmap

  3. The product is built in short, testable iterations. You see working software regularly, so feedback arrives before decisions become expensive.

    Outputs

    Working increments · Weekly demos

  4. Deployment, monitoring, documentation, handover, and post-release support are part of the delivery, not an afterthought.

    Outputs

    Production release · Observability & support

Outputs

Project brief · Risk map

01
Outputs

System direction · Delivery roadmap

02
Outputs

Working increments · Weekly demos

03
Outputs

Production release · Observability & support

04

A website built for your business

From local companies to growing brands. Modern design, fast performance, and a site that is built to convert, not just to look good.

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Website development - United States

My colleagues are ready to work with startups and growing businesses in Austria, the DACH region, and worldwide.

United States

Website development by country

  • Australia
  • Austria
  • Belgium
  • Bulgaria
  • Croatia
  • Cyprus
  • Czechia
  • Denmark
  • Estonia
  • Finland
  • France
  • Germany
  • Greece
  • Hungary
  • Ireland
  • Italy
  • Japan
  • Latvia
  • Lithuania
  • Luxembourg
  • Malta
  • Netherlands
  • New Zealand
  • Poland
  • Portugal
  • Romania
  • Slovakia
  • Slovenia
  • South Korea
  • Spain
  • Sweden
  • Switzerland
  • Ukraine
  • United Arab Emirates
  • United Kingdom
  • United States

Not sure what you need?

Describe your project and we can discuss which colleague and approach best fit your needs.

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