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04About

Sergey Endrass (Badin)

Software Developer · Full-Stack Developer · Digital Product Builder

I am a software developer based in Kaufbeuren, Germany, building modern websites, full-stack applications and interactive web products.

After my practice-based training in software development and full-stack web development at neue fische, I have kept developing my own projects — work that brings together frontend, backend, databases, real-time communication, product design and deployment.

What interests me is less the individual technology than the question of whether a product actually works in the end: for the people using it, and for the goal behind it.

How I measure the work

  • 01

    A clear product

    Every page and every feature has a reason. Whatever does not help does not ship.

  • 02

    Strong user experience

    Understandable without explanation, fast on any device, operable by keyboard.

  • 03

    Dependable engineering

    Strict TypeScript, clean separation of concerns, a deployment you can follow.

Working languages

  • German
  • English
  • Russian

Location

Kaufbeuren, Bavaria — working remotely or on site.

Portrait of Sergey Endrass

Sergey Endrass (Badin)

Kaufbeuren, Bavaria · working remotely or on site

Have a project?

Tell me briefly what it is about. You will get an honest assessment in return.

Discuss a project

Looking for a developer?

I am open to a conversation about collaboration, product development and full-stack work.

Get in touch
05Training

Practice-based training at neue fische

Practice-based training in software development and full-stack web development at neue fische. Building real applications with modern frontend and backend technologies — from the first product idea through to deployment.

The training was built around real development throughout: building your own applications, working in a team, delivering in agile workflows and presenting the results afterwards.

Instead of isolated exercises, the focus was on complete projects — with frontend and backend, database, authentication, testing and deployment.

  • Building real applications
  • Frontend and backend development
  • Teamwork and agile workflows
  • Presenting the products built

Practice-based professional training — not a university course and not an academic degree.

neue fische

What it covered

Frontend
  • HTML
  • CSS
  • JavaScript
  • TypeScript
  • React
  • Next.js
Backend
  • Node.js
  • NestJS
  • REST APIs
  • Authentication & Authorization
Databases
  • MongoDB
  • Mongoose
  • PostgreSQL
  • TypeORM
Quality & craft
  • Responsive Web Design
  • Accessibility
  • Testing
Workflow & collaboration
  • Git
  • GitHub
  • Teamwork
  • Agile Workflows
  • Deployment
06Technologies

What I work with.

A deliberately narrow stack: TypeScript from the database all the way to the interface.

01Frontend
HTMLCSSJavaScriptTypeScriptReactNext.jsTailwind CSSResponsive DesignAccessibility
02Backend
Node.jsNestJSREST APIsAuthenticationWebSocketsSocket.io
03Databases
PostgreSQLTypeORMMongoDBMongoose
04Development & tooling
GitGitHubBunDockerJestSwaggerVercelCI Workflows
05Creative development
Three.jsInteractive InterfacesWeb AnimationBrowser Game Concepts