Express.js Experts in Berlin
matched in minutes from over 15,000 CVsHire experts who create REST APIs, real-time backends and production-ready Node.js services with Express.js, middleware and database integrations. FRATCH matches you quickly and precisely with vetted, available freelancers.
Meet FRATCH Experts in Berlin, who have recently used Express.js
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
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.
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.
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
Stefan D.
Last position:
Frontend Developer – Sports Event and City Portal Projects at München Betriebs GmbH
- Developed an accessible, responsive website based on Figma designs for a major sports event in compliance with WCAG, BITV and EN 301 549
- Planned and set up the tool stack with Vite, Playwright, Docker and GitLab CI
- Worked on two existing projects (Vue.js & Nuxt), focusing on bug fixing, accessibility audits and developing new features
- Collaborated with Design and QA to consistently implement accessible UI patterns
- Advised on improving existing frontend architectures in terms of accessibility, performance and maintainability
Wolfram K.
Last position:
AI / Machine Learning Engineer (Projects & Applied AI) at UNIVERSITÉ PARIS 1 PANTHEON-SORBONNE & LIORA
- Designed and implemented a hybrid recommendation system (content-based + collaborative filtering)
- Built end-to-end ML pipelines including data processing, feature engineering, model training, and evaluation
- Developed RAG-based LLM systems using LangChain and vector databases for semantic search and knowledge retrieval
- Established MLOps workflows with MLflow for experiment tracking, versioning, and deployment readiness
- Implemented deep learning models (computer vision & classification) using PyTorch and TensorFlow
Florian F.
Last position:
Fullstack Developer - freelance at cenfood GmbH
- Implementation of new features in backend and frontend in collaboration with the product team.
- Stack: Typescript, Vue 3, Node/Koa, TypeORM, GraphQL/Apollo, PostgreSQL, Github Actions, Weclapp
Ersin K.
Last position:
Founder & Lead Architect at ORBYNT / 7Style
- Full automation of the software development process: ticket analysis → AI coding agents → pull request → automated code review → deployment
- Multi-tenant architecture with 82 database models and real-time WebSocket monitoring
- Integration of 40+ AI tools with Claude & GPT
- Tech stack: React, TypeScript, Express.js, PostgreSQL, Redis, BullMQ
- Platform in productive use with paying customers
Nikunjkumar P.
Last position:
Senior Java Backend Developer at Questax Professionals GmbH
- Provide the Price Listing Service team with prices for all cars and vans in different markets
- Adapt market-specific requirements such as taxes, government subsidies, campaigns
- Import and synchronize new prices for all new and existing cars and store them in the Redis datastore
- Support our product and on-call duty
- Daily business, development of new features, bug fixing
- Pair programming, code review, mob programming
- Develop POCs for new ideas
- Maintain and extend the backend
- DevOps tasks
- Run Kubernetes updates
- Adjust and further develop Kubernetes resources
- Develop and adapt Helm charts
- Adapt and update ArgoCD
- Maintain, adapt, and improve CI/CD
Ottavio B.
Last position:
Semantic Test Framework for LLMs
Julien L.
Last position:
MLOps Engineer at SAMGEN
- Building and scaling cloud infrastructure on GCP to support a SaaS platform for industrial clients
- Designing and implementing a data-driven DevOps pipeline for streamlined deployment and CI/CD workflows
- Collaborating with Data Science team on MLOps workflow to automate integrated retraining
René P.
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
Olaf N.
Last position:
Frontend Engineer at Danaher/Hach Lange GmbH
- Developed a SolidJS frontend UI for a spectrometric water analysis system on an ARM-based embedded Linux platform
- Prototyped UI in TypeScript React/Nx with LitElements and MQTT integration
- Built production UI using SolidJS, SUID, i18next, Ajv, MQTT.js, C3.js
- Refined requirements with UX team and water analysis system engineers
- Defined and documented system architecture, MQTT message formats, frontend architecture, and development setup
- Set up frontend system from scratch, implemented domain-oriented type system, UI components, and application state
- Managed MQTT pub/sub services and schema-based message validation in frontend
- Coached two junior frontend developers
- Worked in an agile remote team using JIRA, Git, and Bitbucket
Max D.
Last position:
Tech Lead, Interim CTO/CPO at MatchDispatch
I worked on automating cold outreach.
- Developed a queue architecture to support the parallel execution of large volumes of background tasks.
- Integrated multiple email delivery providers.
- Implemented an LLM-based data enrichment process.
Technologies: TypeScript, React, Node.js, Next.js, Drizzle ORM, PostgreSQL, Next-Auth, JWT, Docker, Kubernetes, AWS, CloudFlare, Traefik, Groq, Jest, Figma
Edoardo P.
Last position:
Lead Backend Developer at Aware
Led backend engineering across core domains (main backend, notifications, medical knowledge base, results processing), owning delivery quality, team growth, and engineering standards.
Signature Outcomes
Shipped a flexible, no-code membership platform (pricing, packages, duration), enabling commercial changes without engineering involvement and keeping membership tiers coherent over time.
Built a high-impact backend team through mentorship, coaching engineers into independent contributors and establishing onboarding documentation that enabled fast ramp-up.
Scaled the team from 2 → 5 engineers while maintaining delivery cadence and code quality; owned hiring pipelines and onboarding.
Partnered closely with Product during design to assess feasibility, sequence work, and make pragmatic trade-offs between speed, tech debt, and long-term maintainability.
Institutionalized testing and simplicity as defaults, enforcing high test coverage and a “simple-first” architecture approach.
Tech & Practices
Stack: Node.js (TypeScript), Express, PostgreSQL; microservices (Node & Go); event-driven async jobs.
Practices: Testing as a release gate, lightweight design reviews, iterative delivery, documentation-driven onboarding.
Compliance & Security: Led implementation of Privacy Officer recommendations (GDPR and German healthcare regulations).
Discover over 15,000 top freelancers
Statistics of experts using Express.js
Aggregated from the professional profiles of matched freelancers.
Experience
17 years (Germany: 16 years)
Position duration
1.8 years (Germany: 2.2 years)
Positions per freelancer
11
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Media and Entertainment, Healthcare
Certification focus areas
Information Technology, Product Development, Business Intelligence
Bachelor's degree or higher
89% (Germany: 90%)
Master's degree or higher
53% (Germany: 46%)
Certifications per freelancer
1
Most common languages
English, German, Spanish
Speak two or more languages
100% (Germany: 98%)
Based on our profile pool as of 29 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 Express.js
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 29 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
Express.js 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 (100%)
- Media and Entertainment (50%)
- Healthcare (41%)
- Retail (41%)
- Education (36%)
- Banking and Finance (36%)
- Professional Services (32%)
- Tourism (27%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What Express.js does
Express.js is a lightweight web framework for Node.js. It provides routing, middleware and request handling for APIs, server-rendered applications and backend services without imposing a large application structure. Its small core lets teams shape the architecture around their product and existing JavaScript or TypeScript practices.
Where it fits
Express.js is used for public APIs, internal services, authentication layers, webhook endpoints and backend-for-frontend applications. It also supports server-side rendering when paired with view engines or broader Node.js frameworks. In Berlin, it often appears in digital products, commerce systems and business applications that need a flexible JavaScript backend.
- REST and GraphQL API services
- Webhooks and third-party integrations
- Real-time features with WebSockets or Socket.IO
- Authentication, sessions and access control
Ecosystem and tooling
Strong specialists work comfortably with Node.js, npm, TypeScript and asynchronous programming. Common project work includes Express middleware, validation, OpenAPI documentation, Jest or Mocha testing, ESLint, Docker and CI pipelines. Database experience may cover PostgreSQL, MongoDB, Redis and hosted cloud services, depending on the system.
When to bring in an expert
Companies often need freelance expertise when an API must be delivered quickly, an older Node.js service needs a safe refactor or an internal team lacks backend capacity. The specialist may define routes, improve error handling, connect external services, add tests or prepare the service for production. Clear ownership of security, observability and deployment matters as much as feature delivery.
- A growing API has inconsistent routes or middleware
- Slow requests require profiling and targeted fixes
- A monolith needs separation into maintainable services
- A product team needs temporary backend capacity
What strong professionals deliver
Look for a professional who can explain trade-offs rather than only add endpoints. They should understand middleware order, validation, dependency risks, error boundaries, input sanitisation and graceful shutdowns. Reliable work includes readable route design, automated tests, useful logs and documentation that helps the next team member operate the service.
Working model and handover
Express.js work can be done remotely when repositories, environments and requirements are organised. Berlin-based collaboration can add value for workshops, system reviews or close work with product and infrastructure teams, while English is common in international projects. A good handover includes API contracts, environment guidance, deployment notes and known limitations.
Frequently asked questions
Curious about Express.js? Here are the answers that come up again and again.
Express.js is commonly used to build Node.js web servers, REST APIs, webhook handlers and backend-for-frontend services. Its routing and middleware model also suits authentication, file handling, integrations and server-rendered applications.
Express.js offers a small, flexible core and leaves many architectural decisions to the team. NestJS adds stronger structure and conventions, while Fastify focuses on performance and a more opinionated plugin model; the right choice depends on team preferences, existing code and service requirements.
Express.js work usually benefits from strong Node.js, JavaScript or TypeScript skills, plus API design and asynchronous programming. Useful adjacent knowledge includes SQL or document databases, authentication, Docker, cloud deployment, automated testing and observability.
Express.js is easy to start with, but production services need more than route creation. Match the project with a professional who has handled its security model, data access, testing, deployment and failure cases at a comparable level of complexity.
Express.js projects are often well suited to remote collaboration because the main work happens in repositories, issue trackers and deployment environments. A Berlin-based specialist can also support on-site workshops or closer collaboration with local product and infrastructure teams when needed.
Express.js quality shows in clear route boundaries, predictable middleware, validated inputs, useful error responses and tests for important behaviour. Ask the professional to explain security decisions, monitoring, deployment risks and how the service can be maintained after handover.
Express.js can be a strong choice when a team wants a mature, adaptable Node.js foundation and control over its application structure. It may be less suitable when the project needs strict conventions out of the box or a framework with more built-in modules and governance.
Express.js specialists should clarify the API contract, authentication approach, data stores, deployment target, service boundaries and expected traffic patterns. They should also confirm coding standards, test coverage, ownership of infrastructure and the format of the final documentation.
The average hourly rate of freelancers in Berlin, Germany who have used Express.js in their recent projects is 98 €, which corresponds to a daily rate of about 780 € based on an 8-hour working day.
Of the freelancers in Berlin, Germany who have used Express.js in their recent projects, 89% hold at least a Bachelor's degree and 53% hold at least a Master's degree.
On average, freelancers in Berlin, Germany who have used Express.js in their recent projects have 17 years of professional experience, with a single engagement typically lasting around 1.8 years.
The most common languages among freelancers in Berlin, Germany who have used Express.js in their recent projects are English (100%), German (91%), and Spanish (23%).
The most common industries among freelancers in Berlin, Germany who have used Express.js in their recent projects are Information Technology (100%), Media and Entertainment (50%), and Healthcare (41%).
The most common business areas among freelancers in Berlin, Germany who have used Express.js in their recent projects are Information Technology (100%), Product Development (100%), and Quality Assurance (55%).
Main locations of FRATCH Experts, who have recently used Express.js
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.
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