02.06.2026 aktualisiert
100 % verfügbar
Freelance React & TypeScript Developer | Web Apps for Startups & SMEs
Berlin, Deutschland
Deutschland +2
B.Sc. Medieninformatik (Media Informatics) - Berliner Hochschule für Technik (BHT), Berlininfo: Deutschland, Österreich, Schweiz
Über mich
Freelance React & TypeScript developer in Berlin. I help startups & SMEs build performant web apps. Clean code, close design collaboration, on-time delivery. Stack: React, Next.js, TypeScript, Tailwind, Node.js, Firebase. Available for remote/hybrid projects.
Skills
Tailwind CSSSupabaseAgiles TestenAtlassian ConfluenceAtlassian JiraC++C++/CLIDjangoJSONPostgreSQLNode.jsPrismaTypoScriptNext.jsReact.js
JavaScript & TypeScript Development
Expertise in JavaScript, TypeScript and NodeJS for building full-stack web applications and tools, including serverless deployments on Cloudflare Workers and Pages.
AI & LLM Integration
Proficiency in integrating large language models via the Claude / Anthropic API, including prompt design, structured JSON output and AI orchestration pipelines for production workflows.
Web Audio & Frontend Engineering
Deep knowledge of the Web Audio API, React, Vite, Tone.js, Three.js and Canvas API, with a strong focus on accessibility (ARIA) and inclusive UI design.
C++ Audio Plugin Development (JUCE)
Experience developing VST3 audio plugins in JUCE/C++, including a stereo-linked true-peak limiter with lock-free parameter updates.
Workflow Automation with n8n
Building AI orchestration pipelines using n8n, connecting trigger nodes to Claude model nodes and JavaScript validation nodes for deterministic structured output.
Python (Basics)
Basic knowledge of Python for scripting and supporting software development tasks.
REST APIs & Git/GitHub
Practical experience working with REST APIs, version control via Git and GitHub, and integrating third-party services into production applications.
Monetization & Auth Integration
Implementation of magic-link authentication (Resend), KV-based credit storage and Lemon Squeezy monetization in web applications.
HTML & CSS
Solid foundation in HTML and CSS for building accessible, standards-compliant web interfaces.
Expertise in JavaScript, TypeScript and NodeJS for building full-stack web applications and tools, including serverless deployments on Cloudflare Workers and Pages.
AI & LLM Integration
Proficiency in integrating large language models via the Claude / Anthropic API, including prompt design, structured JSON output and AI orchestration pipelines for production workflows.
Web Audio & Frontend Engineering
Deep knowledge of the Web Audio API, React, Vite, Tone.js, Three.js and Canvas API, with a strong focus on accessibility (ARIA) and inclusive UI design.
C++ Audio Plugin Development (JUCE)
Experience developing VST3 audio plugins in JUCE/C++, including a stereo-linked true-peak limiter with lock-free parameter updates.
Workflow Automation with n8n
Building AI orchestration pipelines using n8n, connecting trigger nodes to Claude model nodes and JavaScript validation nodes for deterministic structured output.
Python (Basics)
Basic knowledge of Python for scripting and supporting software development tasks.
REST APIs & Git/GitHub
Practical experience working with REST APIs, version control via Git and GitHub, and integrating third-party services into production applications.
Monetization & Auth Integration
Implementation of magic-link authentication (Resend), KV-based credit storage and Lemon Squeezy monetization in web applications.
HTML & CSS
Solid foundation in HTML and CSS for building accessible, standards-compliant web interfaces.
Sprachen
DeutschMutterspracheEnglischverhandlungssicher
Projekthistorie
Frontend-Development
React, Next.js, TypeScript, JavaScript (ES6+), Tailwind CSS, HTML5, CSS3, Responsive Design, Single-Page Applications (SPA), Progressive Web Apps (PWA)
Backend & Databases
Node.js, Express, REST APIs, Firebase, Supabase, PostgreSQL, MongoDB
Tools & Methods
Git, GitHub, Agile/Scrum, Code Reviews, Testautomatisierung (Jest, Cypress), CI/CD
Languages
German (native), English (fluent)
Industry Experience
Developing MVPs for Startups, interaktive Dashboards, client oriented Web-Plattformen, close cooperation with Design-Teams, Performance-Optimization
Independently designing, building and shipping audio and AI software end to end. Founder of the Craft Audio brand and the Sonic Inclusion accessibility initiative. Projects include CraftForge (AI-powered Web Audio plugin generator), craftforge-n8n-workflow (AI orchestration pipeline) and Craft Audio Suite (accessible web-native music tools).