TypeScript Experts in Berlin
for reliable web products, matched in minutes with vetted and available professionalsHire experts who build maintainable frontends, Node.js services and typed APIs with TypeScript, React, Angular or NestJS. FRATCH matches you quickly and precisely with vetted, available freelancers who fit your project.
Meet FRATCH Experts in Berlin, who have recently used TypeScript
Stefan O.
Last position:
Founder at ProtocolEngine.io
Evidence-led health intelligence platform turning published research into personal health protocols. It scores 430 habits, foods, and supplements against the studies behind them, and moves the score when the evidence moves. Built solo.
- Built the daily ingestion pipeline across PubMed, bioRxiv, and medRxiv: 43,000+ papers from 3,400+ journals processed into 230,000+ typed evidence claims, each one traceable back to the study it came from.
- Designed the six-factor evidence scoring model and the public changelog behind it, so no recommendation ever appears without the papers underneath it. 23,000+ grade changes recorded and explained to date.
- Shipped an entity information model connecting every intervention to its mechanisms, biomarkers, and outcomes: 118 biomarkers with region-specific reference ranges, 77 mechanisms, 32 graded outcomes.
- Built the personalisation layer: blood panel ingestion that reads lab PDFs with a vision model and corrects results for draw time against the user's wake anchor, plus Oura, WHOOP, and Withings integration for daily readiness context.
- Operate eleven specialised review agents over the corpus and codebase, covering paper curation, retrieval quality, health-claim compliance across EU and US regimes, and security.
- Shipped the Evidence Assistant, a RAG assistant that answers from the claim database and cites the underlying papers, plus a B2B practitioner tier, an Expo React Native app, and localisation across 3 languages and 7 markets.
Stack: Next.js 16, TypeScript, Supabase, pgvector, Anthropic Claude, Vercel, DeepInfra.
Sascha B.
Last position:
Web Developer at GxPlex
- Built a customized MediaWiki instance, including installation, MySQL database, SSL, and automatic backups
- Set up user roles (Admin, Mod, Verified, User) and a permissions system
- FlaggedRevisions for editorial review workflows · Commenting and rating extensions
Chintan P.
Last position:
Product Owner and Technical Product Lead at Sustamize GmbH
LLM-based features for automated CO₂e data extraction from unstructured documents (70% reduction)
Agentic AI pipeline for automated Scope 3 emissions calculations with 150.000+ validated data records
Intelligent API workflows for real-time carbon footprint calculations in ERP and ESG systems
ML algorithms for predicting emissions hotspots and optimizing product design
Automated data validation pipelines with NLP for quality assurance of CO₂e datasets
Led a 15-person cross-functional team in developing 10+ AI features
Strategic product planning and AI roadmap with 35% shorter time-to-market
Stakeholder management with DAX companies (40% higher satisfaction, 95% retention)
On-time project delivery with 95% budget adherence through data-driven backlog management
Agile methods (Scrum, Kanban) with continuous AI/ML integration (25% increase in team velocity)
Product-market fit for AI features through A/B testing and analytics (60% higher adoption rate)
Ines S.
Last position:
Freelance UX Designer at Ines Siebrecht UX | UI Design
Oleg A.
Last position:
Staff Software Engineer at Kpler Germany GmbH
- Delivered a new notifications platform implementation built from scratch to replace existing and upcoming services
- Collaborating with other teams to integrate more domains
Tech stack:
- Data: Scala 3, Apache Kafka, Python, Airflow, Astronomer
- BE-FE: TypeScript, NestJS, Java, Spring Boot, Vue
- Dev-ops: AWS, PostgreSQL, Docker, GitHub Actions, Kubernetes, Helm, ArgoCD
Alexandr K.
Last position:
Technical Co-Founder at Dealyv
- Joined the initial development team and helped transform an n8n prototype into a production-ready 0-to-1 product in a fast-paced environment.
- Owned delivery across CRM and Twilio integrations, customer communication workflows, and administrative interfaces.
- Collaborated on AI evaluation, microservice architecture, and other cross-functional product and engineering topics.
- Supported the CEO across VC communications, customer acquisition, product positioning, onboarding, documentation, pricing, and sales.
Mukund B.
Last position:
Voice AI Chatbot - Real-Time Audio Assistant
- ▶ Built real-time voice assistant (STT → LLM → TTS pipeline) benchmarking and evaluating multiple STT providers including faster-whisper and Azure Speech. achieved sub-3s latency, Groq API (Llama 3) with multi-turn memory - directly handling edge cases in dictation, names and passcode recognition.
Anna M.
Last position:
Freelance Frontend Consultant at Mister Spex
- Developed complex React/TypeScript frontend systems for highly customizable lens products.
- Designed internal tooling for validating and managing product configuration constraints.
- Led accessibility initiatives to align customer-facing applications with EU accessibility requirements.
- Worked extensively in large legacy codebases while incrementally improving maintainability and developer experience.
- Collaborated across multiple teams in an international e-commerce environment.
Rüdiger S.
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.
Marvin M.
Last position:
Co-founder & CTO · Freelance Software Engineer (AI & SaaS) at Self-employed
- Self-employed · Berlin, Germany
- Co-founded the company and own the entire technical side: product architecture, backend, frontend, infrastructure and operations.
- Designed and built the Automated Booking System (ABS) as well as the core platform and payment logic.
- Development of AI-powered SaaS products, from architecture through backend and frontend to production operation.
- Technical consulting on product architecture, data protection and permissible automation.
- Building, running and monetising my own API products for AI agents, each available as a REST interface and as an MCP server.
- Full ownership of architecture, infrastructure, billing, legal texts and go-to-market.
Aruldass A.
Last position:
Web Module Lead at Mphasis Limited
- Led the end-to-end delivery of enterprise full-stack web applications by driving requirement analysis, solution design, frontend and backend development, database design, API integration, code reviews, team coordination, Agile execution, CI/CD deployments, production support, performance optimization, security implementation, and stakeholder collaboration to deliver scalable, high-quality software solutions.
Jorge N.
Last position:
Senior Developer at SafeXSmart KI Solutions UG
AI Platform Backend – Senior Developer
Brought in to design and build a backend for an AI platform from scratch, including multi-provider LLM orchestration and real-time infrastructure for AI influencer personas at scale.
Tasks and responsibilities
- Architecture and implementation of a multi-LLM orchestration layer with Semantic Kernel to integrate GPT-4 and other providers for core platform logic and AI influencer personas, reducing model-switching overhead by abstracting provider APIs behind a single interface.
- Design and development of a backend from scratch in C# / .NET 10, including domain modeling with DDD, a versioned RESTful API layer, and cloud infrastructure setup on Azure.
- Built a real-time chat infrastructure with Server-Sent Events (SSE), message persistence, and delivery guarantees for live operation of AI influencer personas at scale.
- Developed a media management service with integration of cloud object storage for upload and retrieval of influencer-generated content.
- Created an integration and unit test suite with data seeding for reliable regression testing across all core platform flows, significantly reducing production error rates.
Tools and technologies: C#, .NET, ASP.NET Core, Python, TypeScript, MySQL, Semantic Kernel, EF Core, Minimal APIs, LLM Orchestration, Prompt Engineering, Agentic AI, Generative AI, AI-Assisted Engineering, Claude Code, GitHub Copilot, Google Gemini, OpenAI API, Ollama, Redis, Azure, Azure Container Apps, Azure Database for MySQL, Docker, GitHub Actions, Clean Architecture, Vertical Slice Architecture, CQRS, Domain-Driven Design, REST API, xUnit, Integration Testing, Unit Testing, Jira, Confluence, Scrum
Murad H.
Last position:
Founder & Technical Lead at Hubpoint.Ai
- Founded an AI-powered scheduling and business-management SaaS for SMBs, owning technology strategy, architecture, product development, UX, billing and go-to-market execution.
- Architected and shipped a multi-tenant platform with REST APIs, RBAC, CRM, billing and notifications, powering the manager dashboard, admin console, booking experience and iOS/Android applications.
- Led and mentored 7 software engineers, 1 DevOps engineer, 1 QA engineer and 1 UX/UI designer, while remaining hands-on across backend, frontend and product delivery.
- Built AI voice and chat agents using Python/FastAPI, OpenAI and Anthropic APIs, RAG, pgvector and tool calling; integrated Twilio, Google Calendar/Meet, Stripe and Firebase.
- Owned production infrastructure and automated delivery across separate environments using Docker, Nginx, GitHub Actions and Grafana; represented the company at accelerators and international startup events.
Selected stack: Python, FastAPI, Node.js, Vue 3, React/Next.js, React Native, PostgreSQL, Redis, Docker
Santhosh K.
Last position:
Freelance Software Engineer at Zalando SE
- Drive migration of enterprise authorization platform from Styra DAS to open-source OPA via Skipper (Zalando's Golang-based ingress proxy) integration
- Optimise k8s resources and integrate native Prometheus metrics with OPA
- Migrate from internal monitoring solution to Prometheus CRs + Dash0
Tech Stack: Java/Kotlin, Golang, Python, Spring Boot, AWS, Kubernetes, Docker, OpenTofu, Prometheus, Grafana
Maciej R.
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
Discover over 15,000 top freelancers
Statistics of experts using TypeScript
Aggregated from the professional profiles of matched freelancers.
Experience
15 years (Germany: 17 years)
Position duration
2 years (Germany: 2.8 years)
Positions per freelancer
10 (Germany: 11)
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Media and Entertainment, Retail
Certification focus areas
Information Technology, Product Development, Business Intelligence
Bachelor's degree or higher
95% (Germany: 89%)
Master's degree or higher
56% (Germany: 50%)
Doctorate
2% (Germany: 5%)
Certifications per freelancer
1 (Germany: 2)
Most common languages
English, German, Spanish
Speak two or more languages
98%
Based on our profile pool as of 9 Oct 2026.
Daily rate distribution
The chart shows how the daily rates of experts in this technology in Berlin are distributed, based on recent contracts on our platform. Each bar covers a rate range — its height shows the share of experts charging within that range.
Average rates of experts in Berlin using TypeScript
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.
Calculated based on our freelancers’ daily rates as of 9 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
TypeScript experts industry focus
See which industries our matched freelancers work in most often — every figure is calculated live from the freelancers on FRATCH.
- Information Technology (97%)
- Media and Entertainment (39%)
- Retail (39%)
- Healthcare (35%)
- Automotive (34%)
- Education (34%)
- Banking and Finance (32%)
- Manufacturing (27%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Typed JavaScript for modern products
TypeScript is a statically typed superset of JavaScript that compiles to JavaScript for browsers, servers and other runtimes. It helps teams describe data structures, catch mistakes during development and refactor large codebases with more confidence. Its types are removed at build time, so applications run through familiar JavaScript environments.
Applications and services
Companies use TypeScript for customer portals, SaaS products, commerce interfaces, internal tools and server-side services. It supports shared models between frontend and backend, making contracts easier to understand as products grow.
- Responsive web applications with React, Angular or Vue
- Node.js APIs and backend services
- Full-stack products with shared validation and types
- Libraries, design systems and developer tooling
Ecosystem and tooling
Strong TypeScript professionals work with the compiler, tsconfig settings, module systems and modern build pipelines. Common tools include Node.js, npm or pnpm, Vite, Webpack, ESLint, Prettier and Jest. Framework knowledge may include Next.js, NestJS, Angular and React, while API work often involves REST, GraphQL, databases and authentication.
When companies need specialists
Freelance expertise is useful when a JavaScript codebase needs a safe migration, a product team must establish consistent types, or delivery is slowed by unclear interfaces. Berlin companies may also bring in specialists for distributed work across product, design and backend teams, with clear communication in English or German.
- Moving JavaScript modules to TypeScript
- Defining shared domain models and API contracts
- Improving build, test and release workflows
- Reviewing architecture and reducing type-related risk
What strong professionals deliver
A capable TypeScript specialist chooses useful types without making code rigid or hard to read. They understand structural typing, generics, narrowing, asynchronous flows and runtime validation, while knowing that compile-time types cannot replace checks on external input. They also document decisions and keep tooling aligned with the team.
Quality and collaboration signals
Look for work that shows clear boundaries, practical tests and maintainable modules rather than types added for appearance. Ask how the professional handles third-party data, errors, evolving APIs and strict compiler settings. For remote or on-site work in Berlin, shared conventions, thoughtful pull requests and reliable handovers matter as much as framework experience.
Frequently asked questions
Not sure where to start with TypeScript? These answers cover the essentials.
TypeScript is used to build browser applications, Node.js services, shared libraries and full-stack products. Its type system makes data contracts and refactoring easier to manage, especially in larger JavaScript codebases.
TypeScript adds static type checking, editor support and clearer contracts to JavaScript, then compiles to JavaScript for execution. JavaScript can be faster to start with for small scripts, while TypeScript often brings more control to long-lived applications.
A strong TypeScript specialist commonly understands JavaScript, HTML, CSS, Git and automated testing. Depending on the project, useful adjacent skills include React, Angular, Node.js, SQL, GraphQL, cloud services and runtime schema validation.
The right level depends on the codebase, not on a fixed duration. A migration benefits from someone who understands JavaScript patterns and compiler configuration, while a new product may require broader architecture, testing and framework experience.
TypeScript projects are well suited to remote collaboration because code, reviews, tests and build checks are shared digitally. Berlin teams should agree on working hours, written communication and whether German or English is expected for documentation and meetings.
A company may bring in a TypeScript freelancer for a JavaScript migration, a new frontend, a Node.js API or a review of type and build conventions. External expertise is also useful when an internal team needs temporary capacity without compromising code quality.
Review whether TypeScript code uses types to clarify domain rules rather than to add noise. Ask for examples of strict compiler settings, runtime validation, testing, error handling and API evolution, and inspect how clearly the specialist explains trade-offs.
TypeScript supports both frontend and backend applications, often allowing teams to share models and validation concepts across them. Frontend work may use React or Angular, while backend services commonly use Node.js frameworks such as NestJS or Fastify.
The average hourly rate of freelancers in Berlin, Germany who have used TypeScript in their recent projects is 90 €, which corresponds to a daily rate of about 717 € based on an 8-hour working day.
Of the freelancers in Berlin, Germany who have used TypeScript in their recent projects, 95% hold at least a Bachelor's degree, 56% hold at least a Master's degree, and 2% hold a doctorate.
On average, freelancers in Berlin, Germany who have used TypeScript in their recent projects have 15 years of professional experience, with a single engagement typically lasting around 2 years.
The most common languages among freelancers in Berlin, Germany who have used TypeScript in their recent projects are English (98%), German (94%), and Spanish (12%).
The most common industries among freelancers in Berlin, Germany who have used TypeScript in their recent projects are Information Technology (97%), Media and Entertainment (39%), and Retail (39%).
The most common business areas among freelancers in Berlin, Germany who have used TypeScript in their recent projects are Information Technology (99%), Product Development (97%), and Quality Assurance (45%).
Main locations of FRATCH Experts, who have recently used TypeScript
Our freelancers and interim experts are at home across the DACH region — available on-site in the major business hubs or fully remote. Choose a location to discover matched specialists, local market insights and up-to-date availability.
Hamburg 
Munich 
Cologne 
Frankfurt 
Stuttgart 
Dusseldorf 
Leipzig 
Dortmund 
Essen 
Bremen 
Dresden 
Nuremberg 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
