RxJS Experts in Munich
, matched with vetted and available freelancers in minutesHire experts who design reactive data flows, integrate RxJS with Angular and TypeScript, and improve real-time web applications with reliable observable patterns. FRATCH finds a precise match quickly among vetted, available freelancers.
Meet FRATCH Experts in Munich, who have recently used RxJS
Tamás E.
Last position:
Senior Software Developer / Tech Lead at NDA (defense / OSINT)
- Designing the audit logging framework
- Implementing APIs for developers to integrate in their codebase
- Implementing ingestion pipeline, database query layer and UI for browsing the audit events
- Improving stability and reliability of the backend system
David D.
Last position:
Senior Angular Engineer at HUK-Coburg
- Technologies: TypeScript, JavaScript, Java, HTML, SCSS, JSON, REST, Angular, Nx, NgRx, RxJs, Git, Spring, TFS, Jenkins, Jest, Cypress, UI/UX-Design, Figma, Storybook, Domain-Driven Design (DDD), Micro Frontend, Clean Code, Arc42, Agile, Scrum, Jira, Confluence
- Technical conception and further development of a modern Angular web application as part of the portal migration
- Built a modular frontend architecture with Nx and clear separation of domain and technical layers (Clean Architecture)
- Introduced and implemented Domain-Driven Design in the frontend context, including layer model and linting rules for code organization
- Developed reusable UI components and features using Angular, NgRx and RxJS
- Integrated the application with backend services via REST APIs
- Ensured high code quality through structured code reviews, testing with Jest and Cypress and introduction of guidelines
- Performed regular upgrades to new Angular versions to ensure long-term maintainability
- Collaborated closely with internal developers, product owners and stakeholders for requirements analysis and solution finding
- Supported the team through active knowledge transfer, review coaching and technical decision making
- Established a modular architecture with Nx & DDD as the technical foundation for future development
- Significantly improved test coverage through systematic introduction of Cypress and Jest tests
- Facilitated intensive collaboration with internal developers to build DDD structures and testing strategies
- Delivered a modernized UI focusing on clarity, usability and modern web technologies, achieving high acceptance by over 4,000 field staff
- Enabled parallel operation of the new Angular portal with the existing .NET system for phased migration of the sales process
Srinivasu K.
Last position:
Atruvia
Project: Tax Exemption Order Application
The client has an existing application for creating and maintaining tax exemption orders for end customers; design and implementation of a comparable application for internal employees.
- Design and implementation of microservices and the UI for the business area "tax exemption orders" using Domain Driven Design as well as Spring Boot and Angular.
- Implementation of reactive, non-reactive, and asynchronous APIs (Spring REST, WebFlux, GraphQL).
- Development of the Angular application, including state management using Signals, RxJS Observables, and subscriptions.
- Securing the API and the application using OAuth2, JWT, and OpenID Connect.
- Configuration and setup of CI/CD pipelines with Jenkins.
- Collaboration with cross-functional teams and conducting code reviews.
Environment: Java, Spring Boot, Angular 18 & 19 (standalone, signals), RxJs, Bootstrap CSS, Vitesting, OpenShift, Istio, microservices, Kafka, Dynatrace, Jenkins, GitLab, Graylog, Sonar, Oauth2, OracleDB
Daniel R.
Last position:
Software Engineer at DB InfraGO AG
- Development of dynamic web components for displaying KPIs, intelligent map applications, and operational process analysis tools
- Angular 18+
- Leaflet, MapLibre
- NestJS, JavaScript, HTML, CSS
- PostgreSQL, GraphQL, RabbitMQ
- Gitea, Jenkins, Docker
Andreas K.
Last position:
Senior Developer at ioki GmbH, a Deutsche Bahn AG company
- Fullstack development based on Next.js and TypeScript
- Development and optimization of geospatial database queries for PostgreSQL/PostGIS
- Visualization of geospatial data using Mapbox
- Design and execution of load tests and performance optimizations
- Code reviews and documentation tasks
- Technologies: JavaScript, TypeScript, Next.js, React, Zod, tRPC, Storybooks, PostgreSQL/PostGIS, MicroORM, Knex, Material UI, Mapbox, BullMQ, Jest, Playwright, Artillery.io, K6, Sentry, Figma, GitLab, Grafana, GTFS
Boris N.
Last position:
Fullstack Developer & DevOps Engineer at EnBW Energie Baden-Württemberg
- Further development of the internal "ECockpit" platform with an Angular 17 frontend and .NET (C#) backend
- Maintenance and further development of Azure DevOps pipelines
- Introduction of technical improvements in build & release processes
- Collaboration on a modular architecture approach (Clean Architecture & DDD)
- Focus on scalability and secure data processing
- Tech stack: Angular 17, .NET / C#, Azure, Azure DevOps, Git, CI/CD, Clean Architecture, Domain Driven Design
Alexander S.
Last position:
Full-Stack Developer (Java/Kotlin/Angular) at Hypoport (Vergleich.de)
Further development of the vergleich.de website
Development of new and improvement of existing backend services as microservices
Deployment via TeamCity and GitHub Actions
Development of monitoring tools
Development of REST APIs
Database migration from Oracle to PostgreSQL
Java and Kotlin (including Spring, Spring Boot, JPA, Hibernate)
Angular (TypeScript) and JavaScript
IntelliJ IDEA and WebStorm
Apache Maven
Oracle DB (and SQL Developer), MongoDB, PostgreSQL DB
Git (GitLab, GitHub, BitBucket)
TeamCity
Jira
Docker
JUnit, Mockito, jasmin
Bela B.
Last position:
Full Stack Lead Developer, Backend Architect at Telefonica (O2)
The software supports the complete planning and approval of antennas for mobile telephony.
The system was implemented using an event-driven microservice architecture for cloud-native deployment with Quarkus on the backend, Kafka for communication, and Angular for the frontend. Services run on Kubernetes in Google Cloud. A special challenge was synchronizing with the legacy system still used by some users.
Igor C.
Last position:
Senior Frontend Developer at Freelance Frontend Developer
- Senior Frontend Developer, January 2022 – July 2024: Industry: banking and Deutsche Bahn, large databases; Technology: Angular 18, AngularJS, TypeScript, JavaScript, RxJS, CSS, HTML, Azure, Docker, Git; Company size: 50–55 people
- Senior Frontend Developer, October 2021 – December 2021: Industry: contract management; Technology: Angular 12, Syncfusion, TypeScript, RxJS, CSS, HTML, Docker, Git; Company size: 15–20 people
- Senior Frontend Developer, May 2021 – September 2021: Industry: web, social network; Technology: JavaScript, jQuery, Django, CSS, HTML, Git, Compass; Company size: 15–20 people
- Senior Frontend Developer, January 2021 – April 2021: Industry: web, web applications; Technology: Angular 8, TypeScript, RxJS, Docker, Git, CSS, HTML; Company size: 1–10 people
- Senior Frontend Developer, June 2020 – December 2020: Industry: web, web applications; Technology: JavaScript, Dart, Flutter, Git, CSS, HTML; Company size: 1–10 people
René W.
Last position:
Development of an AI-supported system for lead generation
As part of an in-house development project, a pipeline for automated lead generation was created as the second stage of a preceding system for project monitoring. Based on a list of freelance project URLs (freelancermap), qualified lead records are generated, including company, contact person, official and personal email address, and the appropriate form of address (informal/formal). The technologies used were Python (openpyxl, requests) as well as an LLM agent workflow in VS Code (GitHub Copilot Chat) with a custom slash command and extensive rule set; search APIs (Serper.dev) are connected for research. My tasks included the full concept and development. The core is a rule set of around 480 lines that guides the LLM agent deterministically through extraction, website and email lookup, duplicate matching (against existing provider lists), and the creation of a structured JSON output. Deterministic steps (Excel matching, web/email search, pattern derivation) were moved into Python helper scripts. Other requirements included validating the results through versioned blind runs against a reference, iterative refinement of the rule set, and a swappable search provider layer for cost and stability reasons.
Discover over 15,000 top freelancers
Statistics of experts using RxJS
Aggregated from the professional profiles of matched freelancers.
Experience
20 years (Germany: 19 years)
Position duration
1.5 years (Germany: 1.7 years)
Positions per freelancer
15
Top business areas
Information Technology, Product Development, Project Management
Top industries
Information Technology, Banking and Finance, Telecommunication
Certification focus areas
Information Technology, Business Intelligence
Bachelor's degree or higher
86% (Germany: 87%)
Master's degree or higher
57% (Germany: 30%)
Doctorate
29% (Germany: 7%)
Certifications per freelancer
0 (Germany: 2)
Most common languages
German, English, Hungarian
Speak two or more languages
100% (Germany: 99%)
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 Munich 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 Munich using RxJS
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.
RxJS 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 (90%)
- Banking and Finance (70%)
- Telecommunication (70%)
- Automotive (60%)
- Manufacturing (50%)
- Retail (50%)
- Education (40%)
- Insurance (40%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Reactive foundations
RxJS is a JavaScript library for composing asynchronous and event-based programs with observables. It gives teams a consistent way to handle user input, HTTP requests, WebSockets, timers and application events. Operators transform, combine and control these streams without scattering complex callback logic across the codebase.
Where RxJS fits
RxJS is widely used in Angular applications, TypeScript front ends and real-time browser interfaces. It supports dashboards, search experiences, collaborative tools, notifications and workflows that react to changing data. In Munich, companies often use it in connected products and enterprise web applications that must coordinate many live events.
Ecosystem and tooling
Strong specialists work comfortably across the wider JavaScript ecosystem, not just the RxJS API.
- Angular services, components and NgRx state flows
- TypeScript types, generics and strict project settings
- REST, GraphQL, WebSockets and server-sent events
- Jest, Jasmine, marble testing and browser debugging
- Build tools, linting and frontend CI pipelines
When to bring in expertise
Freelance expertise helps when observable chains have become difficult to understand, cancel or test. Companies also engage specialists during Angular migrations, real-time feature work, performance reviews and state-management changes. A professional can simplify operators, define clear stream boundaries and document decisions for the existing team.
What quality looks like
A strong RxJS professional chooses the simplest suitable operator and makes subscription ownership explicit. They understand hot and cold observables, multicasting, cancellation, error recovery and the risks of unmanaged subscriptions. They also test timing-sensitive behavior rather than relying only on manual checks.
Working with Munich teams
RxJS work can be delivered remotely when the repository, architecture decisions and review process are well organised. On-site collaboration in Munich can help during discovery, legacy-system analysis or close work with product and frontend teams. Clear technical English is usually important, with German useful when workshops involve local stakeholders.
Frequently asked questions
Questions about RxJS? Start with the answers below.
RxJS is used to model asynchronous and event-driven work as observable streams. Teams use it for HTTP requests, search input, WebSockets, live dashboards, notifications and coordinated frontend state.
RxJS handles ongoing streams and multiple values over time, while promises normally represent one eventual result. It also provides operators for cancellation, combination, throttling and recovery, but can add complexity when a simple promise is enough.
A capable RxJS specialist should also understand TypeScript, Angular or another frontend framework, browser networking and state management. Experience with testing, WebSockets, REST APIs and build pipelines is valuable for production work.
The right level depends on the system rather than a fixed time period. A small feature may need solid observable fundamentals, while a large Angular application benefits from a professional who can review architecture, state flows, testing and subscription lifecycles.
Yes, RxJS work is often suitable for remote collaboration when code review, documentation and technical communication are consistent. On-site sessions in Munich can still help with legacy analysis, workshops and decisions involving several local teams.
Ask the specialist to explain a real stream design, including cancellation, errors, subscription ownership and testing. Good RxJS professionals explain trade-offs clearly and avoid complex operator chains when simpler code is safer.
RxJS is strongly associated with Angular, but it is a general JavaScript and TypeScript library. It can also support React, Vue, Node.js services and browser applications that need structured event streams.
Frequent race conditions, duplicated requests, memory leaks and unclear loading states are common warning signs. An RxJS expert can trace the stream lifecycle, simplify data flow and introduce focused tests before the issues spread.
The average hourly rate of freelancers in Munich, Germany who have used RxJS in their recent projects is 88 €, which corresponds to a daily rate of about 705 € based on an 8-hour working day.
Of the freelancers in Munich, Germany who have used RxJS in their recent projects, 86% hold at least a Bachelor's degree, 57% hold at least a Master's degree, and 29% hold a doctorate.
On average, freelancers in Munich, Germany who have used RxJS in their recent projects have 20 years of professional experience, with a single engagement typically lasting around 1.5 years.
The most common languages among freelancers in Munich, Germany who have used RxJS in their recent projects are German (100%), English (90%), and Hungarian (20%).
The most common industries among freelancers in Munich, Germany who have used RxJS in their recent projects are Information Technology (90%), Banking and Finance (70%), and Telecommunication (70%).
The most common business areas among freelancers in Munich, Germany who have used RxJS in their recent projects are Information Technology (100%), Product Development (100%), and Project Management (50%).
Main locations of FRATCH Experts, who have recently used RxJS
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.
Berlin 
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Philipp Thomaschewski
FRATCH CEO
