AJAX Expert in Berlin
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Meet FRATCH Experts in Berlin, who have recently used AJAX
Benjamin F.
Last position:
Freelance Product Manager, Product Owner, Scrum Master & Agile Coach at Freelance
Freelance product owner, scrum master and agile coach in various projects spanning from local agencies to multinational corporations in diverse industries.
Last projects:
Adevinta: Technical Project Manager responsible for coordination of several sub-workstreams building the world’s largest classifieds multi-tenant platform.
Aroundhome (a ProSiebenSat.1 company): Product Manager implementing and verifying on the business side a concept for digital qualification of user requests for matching service providers.
Peek & Cloppenburg Düsseldorf: Product Manager Mobile advising on and guiding the rebuild of Android and iOS apps.
Visual Meta GmbH (an Axel Springer company), Berlin: Director Product co-leading the Product & Engineering department together with the Director Engineering.
Responsibilities at Visual Meta GmbH:
Define and deliver a 3–5 year horizon product strategy including a product vision & mission connecting to existing company strategy and strategies from adjacent departments.
Refine an existing OKR process together with OKR master and directors of other departments to increase focus and outcome.
Support the Director Engineering in creating a platform transformation strategy to transform a monolithic on-premise tech stack into a service-oriented, cloud-based architecture and establish a domain-based organizational setup.
Accountability for a motivated and talented team of 5 head-level colleagues and 17 operational team members from product management, data and UX/UI design.
Key achievements at Visual Meta GmbH:
Defined and delivered a 3–5 year horizon product strategy including a product vision & mission.
Increased focus within OKR process by moving from 10 company-level objectives to 2 and from several hundred team-level key results to a few dozen.
Created a career path framework for the product team defining roles and responsibilities from junior to head level positions.
Ola V.
Last position:
IT Lecturer
- IT training in theory and practice for IT specialists in application development and system integration
Toralf C.
Last position:
IT Consultant in PKI Software Development at BWI
- Implementation of a full-stack application with Angular as the frontend framework and Java as the backend language
- Use of the Swagger OpenAPI specification for REST communication between the frontend and backend applications
- Control of a card printer via the Nexus Card SDK framework
- Design and implementation of card management software with a web interface and a JavaFX module for printer monitoring
- Use of Cucumber tests for test automation and creation of test artifacts to test outside the development environment
- Use of Wireshark for network investigations to analyze the API of a third-party product and to monitor the REST API of the self-developed software
Igor K.
Last position:
Freelance Software Developer
Vamsi K.
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
Alberto G.
Last position:
C#/.Net Developer at Pean-IT GmbH
- Developed high-performance REST API interfaces in C# for Investitionsbank Berlin (IBB) using CI/CD (Git, Azure DevOps).
- Developed the "Pean Admin Center" using the Microsoft Graph API (backend: C#, frontend: Vuetify), implemented via CI/CD pipelines (Azure DevOps).
- Created low-code business applications and automated processes with Power Apps and Power Automate.
- Set up and designed the online shop for Pestalozzi-Fröbel-Haus (PFH) via Wix.
Syed A.
Last position:
Senior Web Developer at TU Dresden
- Contributed significantly to enhancing the university’s digital presence through modern WordPress development, performance optimization, and scalable deployment strategies.
- Designed and maintained robust CI/CD pipelines, streamlining deployments across local, staging, and production environments.
- Executed A/B tests on key landing pages, resulting in measurable improvements in user engagement and campaign performance.
- Integrated Google Tag Manager, Google Analytics, and custom tracking solutions to drive data-informed design and content decisions.
- Leveraged AI tools like ChatGPT through advanced prompt engineering to streamline development tasks, debug complex issues, and automate content optimization for SEO and documentation.
Discover over 15,000 top freelancers
Statistics of experts using AJAX
Aggregated from the professional profiles of matched freelancers.
Experience
22 years (Germany: 23 years)
Position duration
2.5 years (Germany: 2.6 years)
Positions per freelancer
15 (Germany: 16)
Top business areas
Information Technology, Product Development, Project Management
Top industries
Information Technology, Education, Media and Entertainment
Certification focus areas
Product Development, Project Management, Information Technology
Bachelor's degree or higher
100% (Germany: 85%)
Master's degree or higher
75% (Germany: 53%)
Certifications per freelancer
1 (Germany: 2)
Most common languages
German, English, Spanish
Speak two or more languages
86% (Germany: 98%)
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 AJAX
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.
AJAX 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%)
- Education (57%)
- Media and Entertainment (57%)
- Retail (57%)
- Automotive (43%)
- Banking and Finance (43%)
- Healthcare (43%)
- Telecommunication (43%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What AJAX does
AJAX enables a web page to exchange data with a server without a full page reload. The approach combines JavaScript with browser request APIs, commonly XMLHttpRequest or fetch, and formats such as JSON. It is used for live search, inline editing, dashboards, filters and interactive forms.
Core building blocks
AJAX work sits between the browser and the application backend. Strong implementation covers asynchronous control flow, request states, response parsing, error handling and DOM updates. Experts also understand HTTP methods, status codes, authentication, caching and the API contract behind each interaction.
- Connect browser events to API requests
- Update focused page regions without reloads
- Handle loading, empty and failure states
- Protect data sent through client-side requests
Ecosystem and tooling
Typical projects use JavaScript or TypeScript with fetch, XMLHttpRequest, Promises and event-driven UI code. The surrounding stack may include REST endpoints, JSON, browser storage and frameworks such as React, Vue or Angular. Testing tools, browser developer tools and network inspection are essential for tracing slow or failed requests.
When companies need experts
Companies often bring in freelance AJAX expertise when an older server-rendered interface needs interactive behavior without a complete rebuild. Berlin teams may also use specialists to connect internal tools, commerce journeys or customer portals to existing services while coordinating remotely or on site.
- Replace full reloads in high-use workflows
- Modernize jQuery-based request logic
- Connect a front end to REST services
- Diagnose race conditions and inconsistent updates
What strong professionals deliver
A strong professional designs clear request flows instead of adding JavaScript patches that are hard to maintain. They separate transport, state and presentation logic, consider accessibility, and keep progressive enhancement in view. They measure network behavior and explain trade-offs in language that product and backend teams can use.
Choosing the right specialist
Look for evidence of shipped interfaces where asynchronous behavior affects real user journeys. Ask how the specialist handles cancellation, duplicate requests, retries, validation, authorization and unexpected responses. For Berlin collaboration, clarify remote routines, on-site workshops and the working language before implementation begins. A practical review should include browser traces, tests and a concise explanation of the API boundary.
Frequently asked questions
Not sure where to start with AJAX? These answers cover the essentials.
AJAX is used to exchange data with a server while keeping the current page visible. Common examples include live search, autocomplete, inline edits, shopping cart updates, dashboards and filters that refresh only the relevant interface area.
With AJAX, the browser sends a background request and updates selected content instead of replacing the whole document. This can make an interaction feel faster, but it also requires careful handling of loading states, errors, browser history and accessibility.
AJAX describes an interaction pattern, not a single framework. React, Vue and Angular often use fetch or another request layer to retrieve data asynchronously, so an expert should understand both the framework conventions and the underlying browser behavior.
A capable AJAX specialist usually works comfortably with JavaScript or TypeScript, HTTP, JSON, REST APIs, browser debugging and asynchronous control flow. Experience with HTML, CSS, accessibility, authentication and a front-end framework is useful when the requests support a larger interface.
The right level depends on the work. A small request integration may need focused AJAX experience, while a legacy modernization or high-use portal calls for a professional who can trace browser behavior, understand backend contracts and improve reliability across the full flow.
AJAX work is well suited to remote collaboration because code, browser traces and API contracts can be reviewed online. Berlin companies should still agree on communication language, overlap for debugging sessions and whether on-site workshops are needed for discovery or release planning.
Review whether the AJAX implementation handles slow networks, failed responses, duplicate actions and empty results clearly. Good work also keeps keyboard access, security, maintainability, test coverage and a clean separation between requests and interface updates.
XMLHttpRequest is the older browser API frequently associated with AJAX and is still present in legacy applications. fetch offers a more modern Promise-based interface, but it does not automatically reject on HTTP errors, so robust request handling remains important.
The average hourly rate of freelancers in Berlin, Germany who have used AJAX in their recent projects is 85 €, which corresponds to a daily rate of about 681 € based on an 8-hour working day.
Of the freelancers in Berlin, Germany who have used AJAX in their recent projects, 100% hold at least a Bachelor's degree and 75% hold at least a Master's degree.
On average, freelancers in Berlin, Germany who have used AJAX in their recent projects have 22 years of professional experience, with a single engagement typically lasting around 2.5 years.
The most common languages among freelancers in Berlin, Germany who have used AJAX in their recent projects are German (100%), English (86%), and Spanish (14%).
The most common industries among freelancers in Berlin, Germany who have used AJAX in their recent projects are Information Technology (100%), Education (57%), and Media and Entertainment (57%).
The most common business areas among freelancers in Berlin, Germany who have used AJAX in their recent projects are Information Technology (100%), Product Development (86%), and Project Management (86%).
Main locations of FRATCH Experts, who have recently used AJAX
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 
Hamburg Munich Cologne Frankfurt Stuttgart Dusseldorf Leipzig Dortmund Essen Bremen Dresden Hanover Nuremberg 
Munich 
Frankfurt 
Dusseldorf Countries:
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