JSON Experts in Austria
in minutes from over 15,000 CVs with vetted specialists ready to deliver.Hire experts who work with JSON data models, API payloads, and configuration files, and who can also handle JSON Schema, validation, and clean data exchange across systems. Get fast, precise matching with vetted, available freelancers.
Meet FRATCH Experts in Austria, who have recently used JSON
Üsame Turhan
Last position:
Java Backend Developer at Porsche Informatik
- Java EE 8 development
- Java 21 and Spring Boot 3 microservices development
- Release management
- Onboarding of new team members
- Owner of an team-internal "Best Code Engineering Award"
Namik Delilovic
Last position:
Test Manager / Test Automation Engineer at Sky Deutschland GmbH
- Implemented and maintained 443 automated test cases with a 99% pass rate (441/443)
- Enabled CI for test automation: automated runs on review/merge, reporting via Xray
- Introduced accessibility and performance checks and established them in reporting
- Served as QA lead in daily operations with stand-ups, Kanban progress tracking, prioritization, and targeted task distribution
- Handled defect triage and stakeholder communication with daily triage, QA status analysis, and actionable recommendations
- Developed and maintained a stable regression suite for CRM/Salesforce flows (UI/E2E and near-API validations)
- Integrated CI/CD using Jenkins pipelines with Groovy (IaC)
- Maintained QA documentation, test conventions, and processes in Confluence, aligned across the team
- Conducted Salesforce Einstein chatbot testing with intent/topic validation and output checks, and used Robot Framework/Python suites for continuous quality monitoring
- Technology stack: Jira, Xray, Confluence, Jenkins, Groovy, Git, Java, Selenium, Playwright, Cucumber, TypeScript, Postman, REST, Salesforce, Google Cloud, Lighthouse, Evinced, Scrum/Kanban, BDD (Gherkin)
Michael Lechthaler
Last position:
Software Developer at ProjektPro GmbH
- Optimized the performance of a large FileMaker solution
- Optimized performance in cloud and on-premise solutions
- Optimized the REST API
- Bug fixing and documentation
- Part of a large Scrum team
Alexander Touchyn
Last position:
Functional Analyst & Administrator at Netz Niederösterreich GmbH
- Introduced automated testing for Fabasoft components and trained testers to create automated test cases.
- Installed AppTest on the server and clients.
- Requested firewall exceptions to allow communication between the AppTest server and clients.
- Conducted training sessions for testers.
- Automated test workflows.
- Created reports and sent emails.
- Enabled faster reviews of new releases, reduced manual testing effort, and improved documentation of test results and discovered defects.
David Moling
Last position:
Senior Technical Consultant at BMW Group
- Architecture and development of enterprise React 19 based documentation platform for automotive software systems
- Full-stack implementation of visualization tools & interactive diagram viewers
- Performance optimization initiatives including virtual rendering for 10,000+ node trees and Web Worker-based search functionality
- Designed and implemented modular plugin architecture enabling extensible document rendering system
- Technical consultation on Git-based architecture-as-code workflows and modern design patterns
- Ownership of critical features from design through deployment, collaborating with cross-functional enterprise teams
Michael Astl
Last position:
Founder & System Architect at Self-employed
- Development and operation of multiple digital platforms in logistics, catering, hotel industry, and SME digitization
- mampfen.at – Food delivery ecosystem (in production)
- ServicePortalPro – Service and automation platform (in production)
- ArtDorado – Art trading platform (rollout April 2026)
- ROOMMATE24 – Guest experience solution for hotels (rollout March 2026)
- firms.app – Business platform (currently in development)
- Various integration and automation projects
Vladislav Filipic
Last position:
Senior Test Automation Engineer / Test Manager at Stadt Wien – WUKSEA
- Creating test scenarios, manual test cases and test data using boundary value analysis and equivalence classes
- Executing functional and non-functional tests (manually with Postman and web application, automated with WebDriver, JUnit and NUnit)
- Setting up, automating and maintaining the test automation framework with Java, Spring Boot, Selenium and Cucumber in IntelliJ (system, regression, smoke, UI and integration tests for web front-end and SOAP API backend interfaces)
- Automating backend NUnit test cases in Visual Studio
- Test management: developing and implementing test strategy and test plans, controlling tests, quality ownership and prioritizing risk-based tests, as well as maintaining documentation in Confluence
- Detailed analysis and quality assurance of requirements
- Creating and maintaining Jenkins pipelines, ensuring quality in build & deployment
- Close collaboration with business analysts, developers, testers and test management
- Identifying, creating and tracking defects/bugs, with thorough test documentation
- Reporting test results and defect reports
- Monitoring test processes and continuous improvements
- Reviewing test data and test results in PostgreSQL database via pgAdmin
- Supporting effort estimation and backlog prioritization
- Analyzing and debugging development code System environment: Java, JUnit, Spring Boot, Selenium, Cucumber, JavaScript, Jenkins, C#, NUnit, Postman, Bitbucket, Confluence, Jira, xRay, pgAdmin, PostgreSQL, SonarQube, Maven, IntelliJ, Visual Studio, CI/CD, SOAP API interfaces
Jaroslav Abraham
Last position:
Child care, personal development and learning
Dominic Wehrmann
Last position:
Engineer / Architect at Freelancer
- Magento 2
- Symfony
- Various technologies
Discover over 15,000 top freelancers
Statistics of experts using JSON
Aggregated from the professional profiles of matched freelancers.
Experience
16 years
Position duration
3.9 years
Positions per freelancer
6
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Automotive, Education
Certification focus areas
Information Technology, Quality Assurance, Product Development
Bachelor's degree or higher
67%
Master's degree or higher
44%
Certifications per freelancer
4
Most common languages
German, English, Croatian
Speak two or more languages
100%
Based on our profile pool as of 30 Aug 2026.
Daily rate distribution
The chart shows how the daily rates of freelancers in this technology in Austria 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 Austria using JSON
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 30 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
About the technology
What JSON is
JSON, short for JavaScript Object Notation, is a lightweight text format for structured data. It is used to move information between services, store configuration, and keep machine-readable payloads easy to read. Strong experts know when to keep JSON simple and when to shape it for long-term use.
Where it shows up
- REST and GraphQL API requests and responses
- Configuration files for apps and services
- Event messages, webhooks, and integrations
- Data export, import, and migration tasks
It is common in backend systems, web apps, and cloud tools. In Austria, companies often need specialists who can work with distributed teams and review data contracts without slowing delivery.
Skills that matter
Good professionals do more than format text. They design clear structures, validate fields, handle nested objects and arrays, and avoid fragile payloads that break integrations. They also understand related tools such as JSON Schema, JSONPath, and JSON-LD when the project needs validation or linked data.
When to bring in help
Bring in freelance expertise when an API keeps changing, a data exchange is unstable, or a migration must preserve structure across systems. A strong specialist can clean up payload design, fix parsing issues, and document the contract so other teams can use it safely. That is useful for product teams, platform work, and data-heavy integrations.
What strong experts deliver
- Stable API payloads and response structures
- Clear schema rules and validation logic
- Clean transformation between formats and systems
- Better error handling for malformed data
The best professionals write JSON that is easy to parse, easy to debug, and hard to misuse. They keep naming consistent, avoid deep nesting where it hurts maintainability, and think about the systems that consume the data.
Quality and collaboration
A good JSON specialist checks examples, edge cases, and downstream consumers. They work well with product, backend, and data teams, and they can review existing structures without turning every change into a rewrite. For Austrian teams, that often means smooth remote collaboration in English, with clear handover notes and practical documentation.
Frequently asked questions
Quick answers to the questions that come up most around JSON.
JSON is used to move structured data between services, store configuration, and pass payloads through APIs and webhooks. It is also common in log pipelines, import and export jobs, and content feeds. Companies hire specialists when the structure needs to stay stable across many systems.
JSON is usually the first choice when the main goal is clean data exchange between applications. Compared with XML, it is shorter and easier to read; compared with YAML, it is often safer for machine parsing and API work. XML still appears in legacy systems, and YAML is common in human-edited configuration.
You should bring in JSON expertise when an API is failing, data is inconsistent, or an integration needs a better contract. It also helps during migrations, schema design, and refactoring old payloads. A specialist can often spot structure problems that are hard to see in code reviews alone.
A strong JSON specialist often knows REST APIs, schema validation, data transformation, and basic scripting. Depending on the project, knowledge of JSON Schema, OpenAPI, GraphQL, or JSON-LD can also be useful. For data-heavy work, they should understand how downstream systems consume the payload.
Simple JSON formatting tasks are easy, but production work needs someone who understands contracts, validation, and compatibility. If the project touches external integrations, mobile apps, or shared APIs, the specialist should be able to reason about breaking changes and edge cases. For larger systems, that matters more than raw speed.
Yes, JSON work is usually easy to handle remotely because the output is text-based and reviewable in pull requests or design docs. For Austrian companies, that often works well across product and platform teams, with English as the common working language. On-site time is only needed when many stakeholders need to agree on the same data contract quickly.
A strong JSON specialist produces structures that are consistent, readable, and strict where they need to be. Look for clear naming, good handling of null and optional fields, and attention to validation and backward compatibility. Good professionals also explain trade-offs instead of only fixing the immediate issue.
Yes, JSON is still central to most API-driven systems, including microservices, SaaS integrations, and many automation tools. Even when the business logic lives elsewhere, the data contract often depends on clean JSON. That is why companies still need experts who can design, review, and maintain it properly.
The average hourly rate of freelancers in Austria who have used JSON in their recent projects is 107 €, which corresponds to a daily rate of about 854 € based on an 8-hour working day.
Of the freelancers in Austria who have used JSON in their recent projects, 67% hold at least a Bachelor's degree and 44% hold at least a Master's degree.
On average, freelancers in Austria who have used JSON in their recent projects have 16 years of professional experience, with a single engagement typically lasting around 3.9 years.
The most common languages among freelancers in Austria who have used JSON in their recent projects are German (100%), English (100%), and Croatian (33%).
The most common industries among freelancers in Austria who have used JSON in their recent projects are Information Technology (78%), Automotive (33%), and Education (33%).
The most common business areas among freelancers in Austria who have used JSON in their recent projects are Information Technology (100%), Product Development (89%), and Quality Assurance (56%).
Main locations of FRATCH Experts, who have recently used JSON
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:
Vienna Graz Request a free demo
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Philipp Thomaschewski
FRATCH CEO
