27.10.2026 aktualisiert

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Full-Stack Web Developer - React | Next.js | Node.js | NestJS | TypeScript

Berlin, Deutschland
Deutschland
Dipl.-Informatiker
Berlin, Deutschland
Deutschland
Dipl.-Informatiker

Profilanlagen

CV_Carsten_Stein.pdf

Über mich

Help you to develop your MVP and scalable applications. Consult you to choose the right architecture and improve your working processes. Show your team how to build future proof software systems. Review and integrate generated code.

Skills

JavaScriptWeb EntwicklungNode.jsNext.jsTypeScriptReact.jsExpress.jsFull Stack EntwicklungNestJS
Development
React, JavaScript, TypeScript, Node.js
Next.js, NestJS, Express.js
Redux, Zustand, Tanstack-Query, Tanstack-Router
Storybook
Jest, Vitest, Testing-library, TestCafe, Playwright
HTML, CSS
Headless CMS, Contentful, Strapi
Material-ui, shadcn ui, ark-ui, Panda CSS, Tailwind
SQL, Postgres, MySQL, TypeORM
NoSQL, MongoDB, Mongoose
Redis
Performance, Accessibility

Tools
npm, pnpm
webpack, vite
turborepo
git, github
Jira, Confluence
Claude code

Cloud
Google Cloud
Microsoft Azure, Azure DevOps
render.com
Docker

Standards
Swagger, OpenAPI, OAuth, Rest-API, GraphQL

Methoden
Agile, Scrum, Kanban
OOP, Functional programming
TDD
SEO
Accessibility, A11y, WCAG

Erfahrung

Berufserfahrungmehr als 10 Jahre
Freelancer seit2006

Sprachen

DeutschMutterspracheEnglischverhandlungssicher

Projekthistorie

HR Case Management Tool

Young Digitals GmbH

Internet und Informationstechnologie

< 10 Mitarbeiter

Architecture, Frontend-, Backend-Development
Tech:
NestJS, Next.js, React.js, MUI, TypeScript, TypeORM, MS SQL Server, OpenAPI

Law as code

Young Digitals GmbH

Internet und Informationstechnologie

< 10 Mitarbeiter

Frontend-, Backend-Development
Tech:
NestJS, Postgres, Keycloak, React, Zustand, Tanstack-Router, Tanstack-Query, Ark-UI, Panda CSS, XML

AMC Cooking App

Jakala

Internet und Informationstechnologie

10-50 Mitarbeiter

Task: Web & Backend development
Tech:
TypeScript, Node.js, Nest.js, React, Next.js, 
Azure Cloud: App service, Function App, Search Service, Storage, Service Bus, Azure AD B2C
Azure DevOps

Backend development for Mineral Waste Manager

Internet und Informationstechnologie

10-50 Mitarbeiter

Task: Backend development
Tech:
React.js, Node.js
Mongo
Kubernetes
Azure DevOps

AI based resource planning

Internet und Informationstechnologie

10-50 Mitarbeiter

Task: Lead Developer
Tech:
React.js, Node.js, Nest.js
Mongo, MySQL
Kubernetes
Azure DevOps

Online marketplace: CMS and SEO

Adevinta

Internet und Informationstechnologie

50-250 Mitarbeiter

Tasks: Develop the webapp (content), SEO, refactoring
Tech: React.js, Node.js, JavaScript, TypeScript, Contentful CMS, Jenkins, Google Cloud

AI based planning service

NEXT Data Service AG

Internet und Informationstechnologie

10-50 Mitarbeiter

Tasks: Architecture, Code conventions, Frontend and Backend development, teaching
Tech: React.js, Redux, Material-ui, Mongoose, ES6, CSS, webpack, Jest, TestCafe, Node.js, Express, MongoDB, Microsoft Azure

Online marketplace for vehicles

eBay Classifieds Group

Internet und Informationstechnologie

250-500 Mitarbeiter

Tasks: Develop the webapp (search), ui modules, accessibility, Test automation, QA, refactoring, A/B tests, tracking
Tech: React.js, ES6, CSS, Redux, lodash, lerna, webpack, Storybook, Jest, Enzyme, Testing Library, TestCafe, Optimizely, Google Analytics, Node.js, Rest API, Jenkins, Google cloud

Webapp for the ICO

envion AG

Energie, Wasser und Umwelt

10-50 Mitarbeiter

Tasks: Implement frontend and back office tools
Tech: Angular1, Node.js, Express, Sequelize, Postgres

Billing and providing assets for bild.de

Bild GmbH & Co. KG

Medien und Verlage

250-500 Mitarbeiter

Tasks: Develop the webapp, Interface to Rest API (Spring), Unit tests
Tech: React.js, Redux, TypeScript, CSS, Jest, Enzyme

Webapp for medical experts

Medicinisto AG

Pharma und Medizintechnik

10-50 Mitarbeiter

Tasks: Develop the webapp
Tech: React.js, Redux, Sagas, SASS, Material-ui, MongoDB

Asset service for Cornelsen Verlag GmbH

ITR8 UG

Medien und Verlage

< 10 Mitarbeiter

Tasks: Develop a Rest API for assets management
Tech: PHP, Symfony 3, PHPunit, MySQL

Internet shop for picture frames

Artvera GmbH & Co. KG

Konsumgüter und Handel

< 10 Mitarbeiter

Task: Develop shop plugins
Tech: JavaScript, Freshdesk, QR Code Scanner

Real-time bidding for online advertising

Travel audience GmbH

Sonstiges

10-50 Mitarbeiter

Tasks: Develop a campaign management tool: Frontend, Interface to Rest API, Refactoring, Unit tests
Tech: React.js, ES6, Redux, CSS, SASS, Bootstrap, Gulp

SEO Tools

Searchmetrics GmbH

Task: Develop a component for data visualization
Tech: React.js, ES6, Flux, SASS, Bootstrap, d3.js, Java, Spring framework, Websocket

Webspecials

Razorfish GmbH

Marketing, PR und Design

10-50 Mitarbeiter

Task: Webspecials for Audi, responsive microsites
Tech: HTML5, CSS3, SASS, JavaScript, jQuery, Photoshop

Voucher platform

OptioPay GmbH

Banken und Finanzdienstleistungen

< 10 Mitarbeiter

Tasks: Develop the webapp, Implement a white label solution
Tech: React.js, ES6, CSS, SASS, Gulp

E-commerce platform (valmano.de, petobel.de)

EPIC Companies GmbH

Task: Implement Online shops, Responsive webdesign
Tech: JavaScript, jQuery, Bootstrap, Java, JSF, Grails, Selenium

Web questionnaire for a medical study

ARGUS Statistik GmbH

Task: Develop the platform
Tech: PHP, Zend Framework, JavaScript, jQuery, Bootstrap, MySQL

Online marketplace for vehicles

mobile.international GmbH

Tasks: Develop magazine pages, implement advertising, tracking
Tech: JavaScript, jQuery, CSS, LESS, Java, JSP, Freemarker, openCMS

Community / social network platform for gyms (McFit)

xailabs GmbH

Tasks: Specifications, Develop frontend and admin tool
Tech: PHP5, Smarty templates, JavaScript, jQuery, MySQL

Portfolio

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