Find the perfect Full Stack Developers in Berlin matched in minutes from 15,000 CVs with the power of AI.
Need React, Node.js, TypeScript, API work, or end-to-end product delivery? Hire full stack talent who can move between frontend and backend, shape clean architecture, and keep releases on track. Get fast, precise matching with vetted, available freelancers.
About the role
What they build
A full stack developer works across the full web product stack. They connect user-facing interfaces with server logic, databases, APIs, and deployment flows. Companies bring in a freelancer when they need one person who can take ownership of a feature from concept to release and keep both frontend and backend aligned.
Typical deliverables
- Web apps and product features built end to end
- REST or GraphQL APIs connected to frontend components
- Database models, migrations, and data flows
- Authentication, permissions, and session handling
- Bug fixes, refactoring, and performance improvements
- Cloud deployment, build setup, and CI/CD support
Core skills
Strong full stack developers are comfortable moving between JavaScript or TypeScript on the frontend and backend, often with React, Next.js, Node.js, Express, NestJS, or similar stacks. They understand database design, state management, testing, and secure integration with third-party services. Good communication matters just as much as code, because they often need to align product, design, and engineering decisions.
When Berlin teams hire
In Berlin, companies often look for freelance full stack developers when a product team is short on capacity, a new MVP must move quickly, or an existing platform needs a focused rebuild. Startups, agencies, and established tech teams all use freelancers for fixed-scope work, feature bursts, and specialist support during launches. Remote collaboration is common, but on-site workshops can help when requirements are still shifting.
What sets strong people apart
A strong full stack developer does not just write code in two places. They make practical trade-offs, keep architecture simple, and spot issues before they reach production.
- They ship working features, not isolated snippets
- They write readable code and test the risky parts
- They understand how frontend and backend choices affect each other
- They can explain options clearly to product and design teams
- They leave the codebase easier to maintain than they found it
Common adjacent titles
People may search for a full stack developer as a full-stack engineer, web developer, software engineer, or full stack programmer. The work can overlap with frontend or backend roles, but the key difference is breadth: the best fit can cover both sides of the product and keep the handoff between them smooth. In Berlin, that is especially useful for fast-moving digital products where teams need flexible collaboration and clear English communication.
Meet FRATCH Full Stack Developers
Abhishek Nair
Hands-on Engineering Lead
Last position:
Fullstack Developer at DAMALO GmbH
- Own full-stack development of an AI-native enterprise platform built on TypeScript, React, Vite, tRPC, Hono, and PostgreSQL, delivering AI-powered consulting workflows to B2B clients.
- Designed and shipped a multi-agent AI system using ReAct framework and Claude skills-style workflow patterns, including an intelligent PM assistant with rich system prompts, slash commands, tool integrations, and streaming chat UI.
- Architected an LLM evaluation framework: rubric-based LLM-as-judge, golden datasets, regression testing, and automated quality gating — ensuring consistent AI output quality at scale.
- Integrated LangFuse for end-to-end LLM tracing, conversation replays, and evaluation pipelines, enabling data-driven prompt optimisation that reduced token costs and response variance.
- Built with Drizzle ORM, pgvector, and knowledge graphs for structured data access, semantic search, and relationship-aware AI reasoning across the platform.
- Led TanStack React Query migration across the application — replacing manual state management with centralised caching and automatic refetching, reducing data-fetching boilerplate significantly.
- Practiced AI-native development throughout: Claude Code, Codex, Perplexity SDK, and LLM-assisted testing across the full development lifecycle. Deployed on Vercel + Azure ACA with Biome for linting/formatting.
Rüdiger Schulz
Full-Stack Software Engineer / Consultant for Digitalization
Last position:
Full-Stack Software Engineer / Consultant for Digitalization at ARTEVENT
Designed, built, and launched an internal event planning web application used by over 100 department leads for a large event, despite having no dedicated testing phase.
Ensured smooth, failure-free operation during first production use, leading to the tool being adopted for future events.
Automated catering calculations and related workflows, significantly reducing email communication and manual computation effort for meal planning.
Managed deployment and hosting on a Linux server using Coolify, including application setup and runtime operations.
Hired and guided a communication designer on UX while independently owning all technical decisions and implementation.
Alois Rietzler
Senior Backend & Fullstack Developer
Last position:
Senior Fullstack Developer at brandung GmbH
- Opt-in RAG extension over tenant-owned data sources (SharePoint, Confluence) on existing multi-tenant enterprise AI platform
- Architecture: ADRs, solution evaluations, permission strategy, cost modeling
- End-to-end SharePoint and Confluence connectors: OAuth consent flows, token refresh, metadata sync, search integration
- Permission resolution: ACL indexing at ingestion and query-time verification (document-level security)
- Elasticsearch hybrid search (semantic + keyword) with RRF scoring
- RAG chat with context injection and source citations
- Stack: Elastic Cloud, Elasticsearch, Docker, Northflank, Next.js, React, TypeScript, Prisma, Microsoft Graph API, Atlassian REST API, OAuth 2.0
Ibrahim Hilali
Senior Full Stack Engineer | Cloud & AI Agent Engineer
Last position:
Senior Full Stack / AI Engineer at Punktum Digital GmbH
- Context: Healthcare and laboratory teams required faster document analysis, treatment-planning support, and reliable AI workflows for MR/VR-assisted operations.
- Contribution: Built the AI healthcare platform, model/agent workflows, VR-glasses deployment platform, REST APIs, Next.js/React interfaces, and CI/CD pipelines.
- Impact: Delivered a production-ready AI product foundation that improved clinical document review, supported laboratory automation, and made VR fleet deployment manageable across environments.
Tech: TypeScript, Next.js, Node.js, React, Java, Spring Boot, Python, PyTorch, TensorFlow, Docker, PostgreSQL, OpenAPI, GitLab, GitHub Actions.
Maciej Rosiek
Full Stack Developer
Last position:
Full Stack Developer (Freelancer) at Runbuggy
- Led development of RunBot AI assistant autonomously using LLM-powered workflow automation (React, TypeScript, Java, MongoDB, NATS)
- Architected TMS platform providing unified transportation management and real-time logistics visibility with AI processing pipelines
- Designed event-driven microservices architecture supporting marketplace
- Drove architectural decisions and technical leadership across full-stack platform development
Hans-Christian Pahlig
Senior Full Stack and AI Engineer
Last position:
Senior Full Stack and AI Engineer at simpleshow
- Developed a Generative AI-based image recommendation engine for an AI video production system
- Implemented automatic image analysis with GPT-4o
- Built semantic vector search using OpenAI embeddings, MongoDB, and OpenSearch
- Tagged and indexed 4 million customer assets
- Redeveloped recommendation engine with a hybrid, balanced keyword and vector search plus filters
Martin Silber
Fullstack Developer
Last position:
Fullstack Developer at Affiliate / Price Comparison (Technical Relaunch)
- Technical relaunch of the existing affiliate site based on Pimcore and Symfony
- Use of TailwindCSS for performant and flexible frontend design
- Implemented a CI/CD pipeline with GitHub Actions
- Used Redis for caching and performance optimization
- Responsible for DevOps tasks including system configuration and deployment
- Integrated the eBay API for automated data processing
- Managed tickets via YouTrack and team communication through Slack
- Test coverage with Codeception (unit & acceptance tests)
- Continuous development, maintenance, and performance improvement
- Designing new features and optimizing existing processes
Peter Mölzer
Fullstack Developer
Last position:
Fullstack Developer at Innobee
- Established and configured Docker containerization infrastructure for frontend development, ensuring seamless synchronization with Docker Hub repositories and Virtual Private Server deployments
- Implemented comprehensive ESLint code quality standards across the entire TypeScript and React Vite codebase to maintain consistent coding practices and enhance code maintainability
- Developed and maintained schema synchronization protocols between frontend and backend systems to ensure data consistency and API compatibility
- Designed and executed automated CI/CD pipeline workflows to streamline development processes and reduce deployment time by 40%
- Collaborated with cross-functional teams to architect scalable microservices infrastructure supporting high-availability production environments
- Conducted comprehensive code reviews on best practices for modern web development frameworks and deployment strategies
René Pfisterer
Founder and CEO
Last position:
Full Stack Developer at XPS Software
- Industry: B2B
- Headless frontend with AEM integration
- Key challenge: Migrating a PWA application in live operation based on .NET and legacy code; the entire application must be converted to React and Express.js/TypeScript
- Technical frameworks: Tailwind, XML, JavaScript, Caddy, ReactJS, Express.js, REST API, JSON
- Cloudflare CDN
- Caddy server with GitHub CI/CD pipeline
Oussama Krifa
Senior Frontend Developer
Last position:
Senior Frontend Developer at DKB Code Factory GmbH
Vamsi Krishna Mylu
Full Stack .NET Developer
Last position:
Full Stack .NET Developer at Neusta GmbH
- Implemented and maintained logistics-domain applications using Angular, C#, ASP.NET, HTML5, CSS3, JavaScript, AJAX and Bootstrap
- Analyzed, designed, coded and deployed backend services and integrations using .NET, XML Web Services and RESTful APIs
- Developed automated SSIS packages and scheduled ETL jobs to support data workflows
- Built and maintained Python scripts for automation and prototyping; applied Cursor AI to build/refactor full-stack AI/ML model integrations
- Implemented unit and integration testing (NUnit) and conducted performance tuning for backend services
- Managed source control and CI/CD using GitHub, Azure CI/CD pipelines and TeamCity
Oleg Abrazhaev
Lead Full Stack Software Engineer
Last position:
Lead Full Stack Software Engineer at sdev
- Worked on a customer project under NDA
- Tech stack used:
- Backend: TypeScript, Node.js, NestJS, Express, PostgreSQL, OpenAI API, Docker
- Frontend: TypeScript, Vue.js 3 with Composition API, Vuetify 3, Angular, Angular Material, SCSS, TailwindCSS
Christopher Mäuer
Mobile & Full-Stack Engineer
Last position:
Mobile & Full-Stack Engineer at Propstack GmbH
- Refactored the mobile app by reimplementing stores, models, API client, screens and components using Typescript
- Added performant on-device storage for stores as preparation for offline mode
- Integrated RNUILib to achieve a minimal and modern UI design quickly
- Implemented native packages to provide additional features such as displaying of caller IDs
- Planned feature development and UX improvements following initial refactoring and redesign
Marco Rodriguez De Paz
Fullstack Developer
Last position:
Fullstack Developer at Artificial Intelligence/LLMs
- Built a portfolio website using Vue 3 implementing dynamic pages responsive UI components.
- Integrated OpenAI ChatGPT API for interactive AI content generation.
- Handled API requests and media management via Cloudflare, enabling efficient communication and asset delivery.
- Vue.js
- Vuetify
- C++, WPF
- Debian
- Matlab
- MySQL
- PostgreSQL
- Tailwind CSS
- Cloudflare Workers
- GitHub Actions
- Node.js
Muhammad Jahangir Javed
Senior Full Stack Developer
Last position:
Senior Full Stack Developer at Freelancer
- Architected RESTful APIs and microservices using .NET Core.
- Designed and managed SQL Server and Cosmos DB databases.
- Developed responsive frontends with Angular, Bootstrap, and TypeScript.
- Deployed and managed Azure cloud infrastructure.
- Implemented unit tests for both backend and frontend modules.
Discover over 15,000 top freelancers
Full Stack Developers statistics
Typical experience
15 years
Average project duration
2 years
Certifications per freelancer
2
Top business areas
Information Technology, Product Development, Project Management
Top industries
Information Technology, Media and Entertainment, Automotive
Most common languages
English, German, Spanish
Bachelor's degree or higher
94%
Master's degree or higher
44%
Salary / Daily Rate Distribution
The chart shows how the daily rates of freelancers in this role are distributed, based on recent contracts on our platform. Each bar covers a rate range — its height shows how many freelancers charge within that range. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
Average rates for Full Stack Developers & Seniority distribution
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
Frequently Asked Questions
Do you have questions? Here you can find further information about FRATCH
A full stack developer handles both the frontend and the backend of a web product. That usually includes building interfaces, APIs, database logic, and deployment support. The best freelancers can take a feature from the first spec to a working release.
Look for solid JavaScript or TypeScript skills, plus comfort with a modern frontend framework and a backend stack such as Node.js, Express, or NestJS. They should also understand databases, authentication, testing, and basic cloud workflows. A good full stack developer can move between layers without creating fragile code.
A frontend developer focuses on the user interface, while a backend developer focuses on server-side logic and data. A full stack developer does both and connects them in one solution. That makes the role useful when you need end-to-end delivery, not just one layer of the system.
Freelance support makes sense when the work is clearly scoped, time-sensitive, or tied to a product milestone. Many teams use a full stack developer to unblock a launch, add features to an existing app, or cover a gap while hiring is still in progress. It is also a good choice when you need flexibility without adding a long-term headcount commitment.
Yes, remote work is common for this role, especially for product work that already has clear tickets, designs, and technical direction. For Berlin teams, occasional on-site sessions can help with planning, discovery, or complex architecture decisions. The best setup is the one that matches the project’s level of uncertainty and the team’s way of working.
The exact stack depends on the product, but common tools include React, Next.js, Vue, Node.js, PostgreSQL, MongoDB, REST, GraphQL, Git, Docker, and CI/CD tooling. A full stack developer should be able to adapt to your existing codebase rather than forcing a new stack. Tool familiarity matters, but problem-solving and code quality matter more.
Ask for examples of features they delivered across the whole stack, not only isolated frontend screens or backend endpoints. A strong full stack developer can explain trade-offs, testing approach, performance decisions, and how they kept the system maintainable. Clean code, clear communication, and practical judgment are better signs than a long tool list.
A good full stack developer will want clarity on scope, ownership, code standards, release process, and who approves product decisions. They should also understand whether they are expected to build a new feature, stabilize an existing system, or support a broader migration. Clear expectations early make delivery much smoother.
Request a Free Demo
Get in touch with the FRATCH team and we will get back to you within 4 hours.
Would you rather directly get in touch?
We always have the time for a call or email!
Philipp Thomaschewski
FRATCH CEO
