REST API Experts in Austria
in minutes from over 15,000 CVs with vetted, available specialistsHire experts who design clean REST endpoints, integrate systems through JSON and HTTP, and harden API security for production use. Get fast, precise matching with vetted, available freelancers.
Meet FRATCH Experts in Austria, who have recently used REST API
Chrisabel Prischl
Last position:
AI Systems & Product Strategy Expert at Webmeisterin
I build. I advise. I think in systems. After years leading digital transformation at scale — Accenture, BP, Lidl — I made a deliberate choice: trade platform dependency for structural independence. My focus is at the intersection of AI systems, product strategy, and venture thinking. I work with operators and founders who want to move fast without losing control — of their data, their stack, their direction.
Karl Forstner
Last position:
ONECEPT Website at ONECEPT GmbH
Development and implementation of the website onecept.at using React/Next.js. Focus on responsive web design, high-performance component structure, basic SEO optimization, and technical deployment.
Technologies: React, Next.js, TypeScript / JavaScript
Michael Langer
Last position:
IAM Developer & IT Architect at Internationale Bank
Design and implementation of new functionalities in the areas of Lifecycle Management (LCM), Role Management (RLM) and Access Governance
Adjustment of the company-wide Segregation of Duties (SoD) matrix to ensure regulatory and internal compliance requirements
Further development and configuration of recertification processes
Creation and adaptation of custom workflows, rules and tasks in SailPoint IdentityIQ (BeanShell, XML, Java)
Use of static code analysis with SonarQube to ensure code quality and compliance with defined development standards
Regular code reviews within the development team to ensure quality, share knowledge and follow clean code principles
Work in an agile Scrum team with daily communication, sprint planning and reviews
Coordination with testers, test managers and business departments to ensure quality and smooth production rollout
Active involvement in release planning and deployment coordination, including test preparation, cutover activities and rollback strategies
Analysis and sustainable resolution of issues in the IAM production environment (2nd- and 3rd-level support)
Reproduction of complex errors, identification of root causes and implementation of lasting fixes
Creation of technical analyses and recommendations for operations and further development
Marcel Steger
Last position:
Senior AI Engineer - Python at Insurance Company
Project Tech Stack: Python, AWS, Azure, FastAPI, openai, pandas, unittest/pymock
Achievements:
- Engineered automated data extraction pipelines to transform complex Excel datasets into structured formats via LLM-driven workflows.
- Architected a generative slide-deck engine that translates natural language prompts into formatted presentation assets.
- Integrated advanced LLM capabilities with the OpenAI Response API, implementing sophisticated tool-calling and structured output logic.
- Developed and containerized scalable backend microservice using FastAPI, Docker, and OpenShift to host and serve agentic skills.
Immo Mohrenschildt
Last position:
Interim Manager/Management Consultant at Austrian regional energy supplier
Further development of the data analytics system landscape based on MS Power BI
- Concept and development of ETL processes, primary data source SAP IS/U incl. extraction via Theobald extractors to Azure Synapse, support with SAP S/4 conversion
- Support in the concept and development of data models in Azure Synapse Analytics
- Gathering and implementation of requirements in the data analytics area from internal business units
- Identification, documentation and analysis of existing as well as cross-functional processes
- Data definition, data modeling & preparation as well as source selection for merging data from differently structured data sources
- Design of reports and dashboards based on MS Power BI
- Transfer of reporting processes from existing structures to MS Power BI Premium (PPU)
- Hands-on development and implementation of analyses, reports and dashboards based on Microsoft Power BI
- Power Apps for write-back processes from Power BI Premium to Azure SQL DB
- Power BI support as part of the SAP S/4 conversion
- Cooperation with internal business units and external development partners
- Coaching/training, documentation, development processes
Alexander Hartinger
Last position:
Software Developer at SpiraTec AG
- Developed modular applications for an industrial chemical plant to optimize internal processes
- Technologies: .NET 10, Blazor WebAssembly, C#, Azure SQL, Syncfusion
- Built frontend components with Blazor WASM
- Backend logic in C#
- Database design in Azure SQL
- Implemented modular software architecture
- Extended existing systems
Jori Martini
Last position:
Agile IT Manager Healthcare Systems at MA01 Gov. Digital City
- Responsible for managing GMP-critical systems
- Leading a team of 20 professionals
- Vendor management with a €15M annual budget
Michail Matjuchin
Last position:
OpenShift Specialist, Developer at Insurance
Project goal: Introduce OpenShift as the run-time platform and migrate all applications to OpenShift.
My contribution: Make sure logging and monitoring for the applications were in place. Set up and put into operation the OpenShift components for logging and monitoring (Elasticsearch, Prometheus, and Grafana). Develop and implement the security concept for OpenShift. Work with developers to define and carry out the application changes needed for the OpenShift migration. Integrate monitoring into the applications.
Technical environment: Java, WebSphere Liberty, OpenShift components, Elasticsearch (ELK stack), Prometheus, Grafana.
Elija Lechner
Last position:
Consultant at Fujitsu Deutschland Mediashop GmbH
- Support and co-design of the development and evolution of an enterprise-wide HUB system for integrating various data warehouse and BI systems as well as data sources and applications in an international context
- Consulting and analysis in the area of enterprise-wide data and BI systems, including organizational structure, data flows, system landscapes, architecture, and strategic data integration
- Data modeling, ETL processes, reporting, and data quality management
Peter Stritzinger
Last position:
Lead Software Architect at Pritz IT GmbH
- Lead software architect in a greenfield MES project (Manufacturing Execution System / factory control system), responsible for architecture decisions, technology selection, and technical direction throughout the entire development lifecycle
- Designed and built the core framework from scratch, including several reusable Spring Boot starters (e.g., OPC-UA integration, messaging, security) that enable flexible composition of the individual system modules
- Introduced Keycloak as the central authentication and authorization system with SSO across all MES components
- Created and owns the full CI/CD pipeline covering Java, NPM and Docker – automating build, test, containerisation and deployment across all project components
- Set up the architecture documentation space in Confluence as the single source of truth for all architecture decisions, component designs, and integration patterns
- Defined and enforced naming conventions and coding standards to ensure consistency in the growing codebase
- Conducted regular code reviews for quality assurance, knowledge sharing, and adherence to architecture guidelines
- Created and maintained technology roadmaps to guide future development priorities and infrastructure investments
Florian Faist
Last position:
Freelance Senior Developer at Green Compliance GmbH
- Developed a CRM solution using the Vaadin UI framework
- Implemented a digital audit workflow for efficient handling of review and approval processes
- Supported structured management of customer and project data and ensured compliance
- Focused on usability, process automation, and integration into existing systems
Werner Paulin
Last position:
Industrial Innovation & Digital Product Advisory at VarionImpact
I help industrial companies in strategy and implementation of digital products.
I work with companies that see software, automation, and connected systems as core drivers of growth or are in the process of becoming exactly that. I help organizations turn technological potential into market-relevant solutions by aligning strategy, product thinking, and execution.
My work sits at the intersection of industry expertise, software, and business impact.
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)
Markus Kleiber
Last position:
Document Development at Insurance Company
- Replacement of original Dopix documents and modules into the Quadient document environment
- Extension of document logic
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
Discover over 15,000 top freelancers
Statistics of experts using REST API
Aggregated from the professional profiles of matched freelancers.
Experience
18 years
Position duration
2.8 years
Positions per freelancer
9
Top business areas
Information Technology, Product Development, Project Management
Top industries
Information Technology, Banking and Finance, Transportation
Certification focus areas
Information Technology, Project Management, Product Development
Bachelor's degree or higher
78%
Master's degree or higher
51%
Certifications per freelancer
2
Most common languages
German, English, Italian
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 REST API
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 REST APIs do
REST APIs let different systems exchange data over HTTP in a simple, predictable way. They power web apps, mobile apps, partner integrations, and internal services that need stable access to business data. Strong experts keep the interface clear, versioned, and easy to consume.
Common delivery work
- Design endpoint structure, resources, and request flows
- Build JSON responses and error handling
- Connect services, databases, and external platforms
- Document usage for front-end, mobile, and partner teams
Tools and ecosystem
REST API work often sits with OpenAPI, Swagger, Postman, and auth layers such as OAuth 2.0 or JWT. Experts also work with gateways, caching, testing tools, and logging so services stay easy to debug. In Austria, this often supports teams that need reliable integration across distributed business systems.
When freelance help makes sense
Companies bring in specialists when they need a new API, a legacy interface cleanup, or help with scaling an existing service. It is also a common need during product launches, third-party integrations, and migrations from older SOAP or ad hoc endpoints. Freelancers can join remotely or on-site in Austria, depending on the team setup.
What strong experts deliver
Good REST API professionals think beyond the endpoint list. They define resource models, status codes, authentication, validation, and versioning in a way that stays maintainable. They also write clear documentation so other teams can use the API without long handovers.
Signs you need one
- Your team argues about endpoint design or naming
- Integrations keep breaking because contracts are unclear
- Security, authentication, or rate limiting needs attention
- You need help reviewing API quality before release
Frequently asked questions
The facts hiring teams ask for most often when it comes to REST API.
A REST API is used to let applications exchange data through standard HTTP methods such as GET, POST, PATCH, and DELETE. Companies use it for web back ends, mobile app access, partner integrations, and internal service communication. It works well when the interface needs to be simple, stateless, and easy to document.
A REST API is usually the better fit when you want clear resources, predictable URLs, and easy caching. GraphQL is stronger when clients need flexible data fetching, while SOAP is still found in some older enterprise systems with strict contracts. A good specialist will recommend the option that fits the system, not just the trend.
A strong REST API specialist usually knows HTTP, JSON, authentication, error handling, and API documentation. Practical experience with OpenAPI, testing tools, logging, and gateway setup is also valuable. In many projects, database design and service integration skills matter just as much as endpoint coding.
The right level depends on the scope of the REST API work. A small internal interface may need only a focused specialist, while a public API with partners, versioning, and security checks needs someone who has shipped similar systems before. The key is proven delivery, not a long title list.
Yes, most REST API work can be done remotely because the deliverables are code, documentation, and tested endpoints. On-site collaboration in Austria can still help when teams need fast workshops, architecture alignment, or access to sensitive internal systems. Many projects use a mixed setup.
Look for clear resource design, consistent status codes, versioning strategy, and secure authentication in their REST API work. Good specialists also write documentation that other teams can actually use and show how they test failure cases, not only the happy path. Samples of past API design decisions are often more useful than general claims.
For a REST API integration, ask how the specialist handles contract changes, retries, idempotency, and error mapping. You should also check whether they have worked with the systems you need to connect, such as CRMs, payment services, or internal microservices. That tells you whether they can keep the integration stable over time.
For many products, REST API is still the safest default because it is widely understood and easy for teams to adopt. It is especially practical when you need public endpoints, partner access, or simple front-end consumption. A specialist can help confirm whether REST fits better than GraphQL, SOAP, or a more specialized interface.
The average hourly rate of freelancers in Austria who have used REST API in their recent projects is 99 €, which corresponds to a daily rate of about 795 € based on an 8-hour working day.
Of the freelancers in Austria who have used REST API in their recent projects, 78% hold at least a Bachelor's degree and 51% hold at least a Master's degree.
On average, freelancers in Austria who have used REST API in their recent projects have 18 years of professional experience, with a single engagement typically lasting around 2.8 years.
The most common languages among freelancers in Austria who have used REST API in their recent projects are German (100%), English (100%), and Italian (13%).
The most common industries among freelancers in Austria who have used REST API in their recent projects are Information Technology (91%), Banking and Finance (43%), and Transportation (33%).
The most common business areas among freelancers in Austria who have used REST API in their recent projects are Information Technology (100%), Product Development (87%), and Project Management (52%).
Main locations of FRATCH Experts, who have recently used REST API
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.
Vienna Graz 
Vienna Request a free demo
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FRATCH CEO
