Expo Experts in Berlin
, matched quickly with vetted and available freelancersHire experts who create cross-platform React Native apps with Expo, configure EAS Build and EAS Submit, and connect native modules when projects need them. Get precise, fast matching with vetted, available freelancers for your mobile product.
Meet FRATCH Experts in Berlin, who have recently used Expo
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.
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
Ibrahim H.
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.
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
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
Stefan G.
Last position:
Freelance Product Owner / Manager at Self employed
- Working on [link] and [link]
- Temporary Product Owner / Product Manager
- Project management
- Jira/Confluence setup/configuration
- Requirements engineering
- User story mapping, backlog creation and prioritization
- Scrum Master for hybrid and remote teams
Muhammad A.
Last position:
Senior Software Engineer at Verbund Pflegehilfe
Own Azure-hosted ASP.NET Core microservices for chronic-care workflows, sustaining 99.8% uptime across 3,000+ patient interactions.
Shape HL7 FHIR-based patient, encounter, and observation profiles delivering a unified source of truth for clinical teams and integrations.
Implement SignalR telemetry, Application Insights alerting, and automated pipelines that surface deteriorating vitals in under three seconds.
Automated consultant outreach by orchestrating Twilio voice campaigns via n8n workflows and VAPI AI assistants, boosting successful client contacts by 55%.
Entlass Manager: Led the end-to-end build of the chronic-care coordination platform, standing up Azure-native microservices, clinical data flows, and patient-facing tooling from initial requirements through production release.
Power Dialer: Built the Twilio-driven consultancy auto-dialer and n8n workflows, raising client reachability to 85%.
Martin M.
Last position:
Florio C3G
- App that helps patients schedule their medication, track their symptoms, and biomarkers
- The app is being certified as a medical device
- Technologies: React Native, Expo, Redux Toolkit
Discover over 15,000 top freelancers
Statistics of experts using Expo
Aggregated from the professional profiles of matched freelancers.
Experience
13 years
Position duration
1.5 years
Positions per freelancer
11
Top business areas
Information Technology, Product Development, Business Intelligence
Top industries
Information Technology, Banking and Finance, Healthcare
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
100%
Master's degree or higher
25%
Certifications per freelancer
3
Most common languages
German, English, Japanese
Speak two or more languages
100%
Based on our profile pool as of 19 Sep 2026.
Daily rate distribution
The chart shows how the daily rates of freelancers in this technology in Berlin 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.
Average rates of experts in Berlin using Expo
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 19 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
Expo 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%)
- Banking and Finance (63%)
- Healthcare (63%)
- Education (50%)
- Energy (50%)
- Media and Entertainment (50%)
- Automotive (38%)
- Manufacturing (38%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What Expo is
Expo is an open-source framework and set of tools built around React Native. It helps teams create iOS and Android applications from a shared JavaScript or TypeScript codebase, while providing standard libraries for features such as notifications, cameras, location and secure storage. Expo Go supports rapid device testing, while prebuild and custom native projects cover more advanced requirements.
What teams build
Expo suits consumer apps, internal mobile tools, commerce experiences and companion apps for web or connected products. A specialist can shape the application structure, navigation, data flow and release process while keeping the shared codebase maintainable.
- Cross-platform iOS and Android applications
- Mobile interfaces with native device features
- Prototypes that can mature into production apps
- Branded apps with app-store release workflows
Ecosystem and tooling
The ecosystem combines React Native with Expo SDK packages, Expo Router and TypeScript. EAS Build creates application binaries, EAS Submit supports store delivery and EAS Update enables over-the-air updates within platform rules. Specialists may also work with authentication services, GraphQL or REST APIs, analytics, push notifications, testing tools and native modules.
When to bring in expertise
Companies often need freelance support when a mobile product must move from a prototype to a reliable release, or when an existing React Native app is being adopted into Expo. Berlin teams may value professionals who collaborate remotely across time zones while joining local workshops when product, design and compliance decisions need close coordination.
- A release pipeline needs dependable EAS configuration
- Native functionality is missing from the standard Expo libraries
- App performance, navigation or state management needs review
- A legacy React Native project needs migration planning
What strong specialists deliver
Strong Expo professionals understand both the managed workflow and the points where native iOS or Android work becomes necessary. They establish clear environment configuration, handle secrets safely, manage app identifiers and signing, and test on physical devices. They also distinguish an update that can use EAS Update from a change that requires a new store build.
How quality is assessed
Review practical examples of released Expo applications and ask how the specialist handled permissions, offline behavior, deep links, notifications and failed builds. Good professionals explain trade-offs between Expo Go, development builds and custom native code without treating one workflow as universal. They leave documented scripts, repeatable build settings and a clear handover for the product team.
Frequently asked questions
Everything clients usually want to know about Expo, in one place.
Expo is used to build and maintain cross-platform mobile applications with React Native. It provides libraries and services for device features, development builds, app creation, store submission and controlled updates.
Expo adds an integrated toolchain and maintained modules around React Native, which can speed up setup and releases. Plain React Native may offer more direct control from the start, but Expo can still support custom native code through development builds and prebuild.
A strong Expo specialist should also understand React, TypeScript, React Native navigation, state management and mobile accessibility. Experience with APIs, authentication, automated testing, app-store rules and native iOS or Android configuration is valuable when the project goes beyond standard modules.
The right level depends on the product stage and native complexity. A small prototype may need focused Expo delivery skills, while a production app benefits from a professional who can design architecture, manage EAS workflows, investigate device-specific issues and plan long-term maintenance.
Expo works well in remote collaboration because its configuration, scripts and build artifacts can be shared consistently. Teams in Berlin can work with specialists remotely, provided they agree on communication routines, device testing, release ownership and documentation; on-site workshops can help with sensitive product decisions.
Expo Go is useful for fast testing with the libraries it already includes, but it cannot represent every custom native dependency. A specialist should move to a development build when the app needs a custom native module, special permissions, native configuration or behavior that Expo Go does not provide.
Yes. Expo applications can use supported Expo modules, compatible community packages and custom native modules through development builds and prebuild. The specialist should check compatibility, configure iOS and Android settings, and test the resulting builds on real devices.
Ask the Expo professional to explain release configuration, error handling, offline states, permissions, update safety and store submission. Review the code structure and documentation, then request a small technical walkthrough that shows how the app is tested and how another professional could reproduce its builds.
The average hourly rate of freelancers in Berlin, Germany who have used Expo in their recent projects is 94 €, which corresponds to a daily rate of about 750 € based on an 8-hour working day.
Of the freelancers in Berlin, Germany who have used Expo in their recent projects, 100% hold at least a Bachelor's degree and 25% hold at least a Master's degree.
On average, freelancers in Berlin, Germany who have used Expo in their recent projects have 13 years of professional experience, with a single engagement typically lasting around 1.5 years.
The most common languages among freelancers in Berlin, Germany who have used Expo in their recent projects are German (100%), English (100%), and Japanese (25%).
The most common industries among freelancers in Berlin, Germany who have used Expo in their recent projects are Information Technology (100%), Banking and Finance (63%), and Healthcare (63%).
The most common business areas among freelancers in Berlin, Germany who have used Expo in their recent projects are Information Technology (100%), Product Development (100%), and Business Intelligence (63%).
Main locations of FRATCH Experts, who have recently used Expo
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.
Countries:
Berlin 
Hamburg Munich Cologne Frankfurt Stuttgart Dusseldorf Leipzig Dortmund Essen Bremen Dresden Hanover Nuremberg Request a free demo
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Philipp Thomaschewski
FRATCH CEO
