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Java Experts in Vienna

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Hire experts who deliver Java backends, Spring Boot services and enterprise integrations for demanding applications. FRATCH uses fast, precise AI matching to connect you with vetted, available freelancers who fit your technical needs.

Meet FRATCH Experts in Vienna, who have recently used Java

Verified expert

John A.

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Senior DevOps Engineer

Vienna
John A.

Last position:

Software Developer and DevOps Engineer at Bundesrechenzentrum (BRZ)

Refactoring and improving core APIs; implementing client change requests. Setting up metrics, traces, and logs monitoring infrastructure to support operations. Designing GitOps deployment and infrastructure as code. Applications and systems configuration in ArgoCD and Openshift. Confluence documentation of design, approach, and solution. Tech Stack: Java 8 & 21, Spring framework, JSP, JavaScript, Bash scripts, SQL, Grafana Stack, OpenTelemetry, Docker, DB2, Maven, Kubernetes Kompose.

Verified expert

Manuel P.

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AI Engineer

Vienna
Manuel P.

Last position:

AI Engineer at Misumi Europe GmbH & Motius GmbH

  • Designed and built a next-generation NLP platform to accelerate sales-driven customer service through intelligent request analysis and routing, reducing average customer query response time by 30%.
  • Architected a hybrid NLP system combining Large Language Models (LLMs) with traditional NLP pipelines for robust, explainable results.
  • Developed request classification and routing mechanisms to accelerate customer support teams in handling customer queries faster and more accurately.
  • Optimized LLM based data extraction and classification with context engineering.
  • Integrated the platform into customer service processes, reducing response times and enhancing workforce efficiency.
Verified expert

Michael L.

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IAM Developer & IT Architect

Vienna
Michael L.

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

Verified expert

Mark K.

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Business Analyst / Business Designer

Vienna
Mark K.

Last position:

Business Analyst / Business Designer at UNIQA

  • Incident analysis and troubleshooting
  • Process improvements in collaboration with the business teams
  • Joint design and implementation of requirements with the business department and architecture
  • Planning and execution of quality management
Verified expert

Michail M.

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Experienced Software Developer and OpenShift Specialist, Application Architect with a focus on / experience in containerizing

Vienna
Michail M.

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.

Verified expert

Damir D.

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Senior IT Consultant

Vienna
Damir D.

Last position:

Senior IT Consultant at Dudakovic e.U.

  • Consulting in national and international projects in various roles and sectors (banking and finance, public sector, telecommunications, data management, software development)
  • Engaging in project management, requirements management, business analysis, process management, IT consulting and coaching
  • Delivering sustainable value quickly and efficiently due to high complexity and diversity of projects and expertise
  • Emphasizing collegiality and integrity and fostering a positive team atmosphere
Verified expert

Daniel A.

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Solution Architect and Fullstack Developer

Wien
Daniel A.

Last position:

Solution Architect and Fullstack Developer at IoT Sensor Data Processing and Evaluation

  • Develop a concept for the analysis of sensor data.
  • Assess implementation options, products, and pricing in Azure.
  • Present and advocate the solution concept to the client.
  • Implement an ETL pipeline for processing sensor data.
  • Integrate BI solutions with the data repository.
  • Provide documentation and support for end users.
Verified expert

Alexander V.

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Senior Cloud & Kubernetes Architect

Vienna
Alexander V.

Last position:

Senior Cloud & Kubernetes Architect at A.S.E. | Business Solutions for Construction

  • Architected and deployed a highly available, multi-tenant Kubernetes platform on Google Kubernetes Engine (GKE) for business-critical microservices.
  • Designed and implemented a comprehensive Infrastructure-as-Code strategy using Terraform for managing GKE clusters, networking (VPCs, Subnets), and IAM policies.
  • Engineered optimized storage solutions for stateful workloads (MongoDB) using GKE PersistentVolumes, enhancing performance and data resiliency.
  • Established a full-stack observability framework using Google Cloud Monitoring, Logging, Prometheus, and Grafana.
Verified expert

Fabio G.

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IT Architect, Requirements Analyst and Consultant

Vienna
Fabio G.

Last position:

IT Architect, Requirements Analyst and Consultant at CANCOM

  • Supports CANCOM customers in migrating legacy on-prem systems to Microsoft Fabric and Microsoft Foundry
  • Takes over and stabilizes existing solutions after a short handover
  • Business analysis and requirements engineering for migration to a new cloud environment
  • Optimization of machine learning models for feature extraction and customer profiling
  • Ensures data protection and compliance
  • Leads the migration of on-prem systems to Microsoft Fabric
  • Designs new AI platforms for clients
  • Tests the integration of chatbots for document intelligence with Microsoft Foundry, including requirements analysis, implementation, validation, and client communication
Verified expert

Üsame T.

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Java Backend Developer

Vienna
Üsame T.

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"
Verified expert

Burak E.

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Senior Developer (Freelancer)

Burak E.

Last position:

Senior Software Engineer at Nürnberger Versicherung

Further development of an insurance product quotation system

  • Implementation and maintenance of pricing logic for property and casualty products (accident, property liability, business contents) based on Java and FaktorIPS
  • Implementation of actuarial tariff revisions into product-specific calculation models
  • Development and refactoring of backend components and web UI components
  • Creation and maintenance of test tables and automated premium tests for quality assurance
  • Code reviews and active involvement in quality assurance in the development process
  • Production support and bug fixing in live operations
Verified expert

Matthias K.

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Business Architect

Vienna
Matthias K.

Last position:

Business Architect at E5GTEC

  • Analysis of extended requirements related to existing controllers in an industrial plant
  • Creating concepts for storing and visualizing sensor data
  • Communication with PLCs
  • Microservice architecture
  • Unified architecture
  • AI-based evaluations of sensor data
  • Technologies used: .NET 8, Minimal API, Postgres, MQTT, RabbitMQ
Verified expert

Frank W.

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Software Development

Vienna
Frank W.

Last position:

Software Development at REI and EMI

  • Code review, bug fixing, and new development of program code in PL/SQL and Oracle Forms
  • Migration of the database version to Oracle 12/19 and migration of the Oracle Forms environment from client-server to web (6i → 12c)
  • Fixing blocking sessions and implementing new workflow requirements
  • Use of PL/SQL packages, procedures, functions, database triggers, batch files, and Java applications
  • Revision of screen masks based on Oracle Forms and client-side PL/SQL code
  • Business handling of issuing and processing vouchers (REI = Reimbursement; EMI = Emission), including billing with acceptance partners
  • Agile development based on SCRUM with monthly sprints and weekly coordination meetings
Verified expert

Michael G.

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Scrummaster

Wien
Michael G.

Last position:

Scrummaster at Xenovo

  • Planning and monitoring sprints and holding the scheduled meetings

  • Analyzing and resolving issues in the development process

  • Error analysis, bug management and correction in individual process steps

  • Stakeholder management

  • Documentation and improvement of the development process

  • Tools: JIRA, Confluence

Discover over 15,000 top freelancers

Statistics of experts using Java

Aggregated from the professional profiles of matched freelancers.

Experience

19 years

Java experts in Vienna have 19 years of professional experience on average.

Position duration

2.4 years

Java experts in Vienna stay in a single position for 2.4 years on average.

Positions per freelancer

11

Java experts in Vienna have completed 11 positions on average over the course of their careers.

Top business areas

Information Technology, Product Development, Quality Assurance

Java experts in Vienna have gathered most of their hands-on project experience in Information Technology, Product Development, and Quality Assurance.

Top industries

Information Technology, Government and Administration, Banking and Finance

Java experts in Vienna are most in demand in Information Technology, Government and Administration, and Banking and Finance.

Certification focus areas

Information Technology, Project Management, Product Development

Java experts in Vienna earn their certifications most often in Information Technology, Project Management, and Product Development.

Bachelor's degree or higher

88%

88% of Java experts in Vienna hold at least a Bachelor's degree.

Master's degree or higher

66%

66% of Java experts in Vienna hold at least a Master's degree.

Doctorate

9%

9% of Java experts in Vienna have a doctorate (PhD).

Certifications per freelancer

3

Java experts in Vienna hold 3 professional certifications on average.

Most common languages

German, English, French

Java experts in Vienna most often speak German, English, and French.

Speak two or more languages

94%

94% of Java experts in Vienna speak two or more languages.

Based on our profile pool as of 19 Sep 2026.

Daily rate distribution

0 4 8 12 16
3 of the Java experts in Vienna charge less than €640 per day.
13 of the Java experts in Vienna charge between €640 and €800 per day.
8 of the Java experts in Vienna charge between €800 and €960 per day.
4 of the Java experts in Vienna charge between €960 and €1120 per day.
2 of the Java experts in Vienna charge between €1120 and €1280 per day.
One of the Java experts in Vienna charges €1280 or more per day.
<€640 €640-​800 €800-​960 €960-​1120 €1120-​1280 €1280+

The chart shows how the daily rates of freelancers in this technology in Vienna 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.

Discover detailed Java rate benchmarks:

Explore rate insights

Average rates of experts in Vienna using Java

Rates are based on recent contracts and do not include FRATCH margin.

1000
750
500
250
Rate comparison chart
Daily rate avg. 802 €

The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.

1000
750
500
250
Rate comparison chart
Median rate 760 €

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.

Java 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 (89%)
  • Government and Administration (56%)
  • Banking and Finance (53%)
  • Telecommunication (42%)
  • Insurance (39%)
  • Transportation (39%)
  • Professional Services (31%)
  • Automotive (25%)

Please note that freelancers can work across multiple industries, so percentages overlap.

About the technology

What Java Delivers

Java is a general-purpose programming language and runtime for reliable software across servers, cloud environments, mobile devices and embedded systems. Its object-oriented model, strong typing and mature tooling support applications that must remain stable as teams and requirements change. The Java Virtual Machine lets compiled applications run across operating systems with consistent behaviour.

Applications and Systems

Java is used for transactional backends, web services, data platforms, payment processing and internal business systems. It also supports Android projects through the wider Java ecosystem, although many newer Android codebases combine Java with Kotlin.

  • Design REST and event-driven services
  • Build secure enterprise applications
  • Connect databases, queues and external APIs
  • Modernise older Java applications

Ecosystem and Tools

The Java ecosystem includes the JDK, JVM, Maven, Gradle, JUnit and widely used observability and testing tools. Spring Boot is common for production services, while Jakarta EE remains important in structured enterprise environments. Specialists often work with Hibernate, Kafka, Docker, Kubernetes and cloud services alongside Java.

When Companies Need Experts

Companies bring in freelance Java expertise when a platform needs new services, a legacy codebase needs controlled change or an internal team needs support during a critical delivery phase. In Vienna, Java is relevant to organisations in finance, public services, logistics, manufacturing and technology. Remote collaboration can work well when documentation, access and release processes are clear.

  • Split a monolith into maintainable services
  • Improve performance, resilience or test coverage
  • Prepare a migration to a current JDK
  • Establish delivery and monitoring practices

Skills That Matter

Strong professionals understand more than Java syntax. They can model domain logic, choose suitable concurrency patterns, design APIs, secure data flows and reason about database transactions. They also understand build pipelines, version control, container deployment and production diagnostics.

A good specialist explains trade-offs clearly and keeps code readable for the team that will maintain it. Experience with Spring Boot, Jakarta EE, SQL, messaging and cloud infrastructure is valuable when the project crosses application and operations boundaries.

Choosing the Right Specialist

Assess candidates through a focused review of comparable systems, architecture decisions and delivered outcomes. Ask how they handle backward compatibility, failures, dependency upgrades and test strategy rather than relying only on framework names. A practical discussion about a real service boundary can reveal how they think.

For Vienna-based work, clarify whether workshops or release activities require on-site collaboration and which working languages the team uses. The strongest match combines relevant domain experience with careful communication, realistic planning and respect for existing constraints.

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Frequently asked questions

The facts hiring teams ask for most often when it comes to Java.

Java is commonly used for enterprise backends, web services, financial systems, data processing applications and integration layers. Its JVM runtime and mature libraries make it suitable for systems that need portability, strong testing and long-term maintainability.

Java and C# both offer mature object-oriented ecosystems, strong tooling and broad enterprise use. Go is often chosen for simpler, lightweight services and fast compilation, while Java can be a better fit when a project depends on established JVM libraries, Spring Boot or a large existing codebase.

A strong Java specialist may also work with Spring Boot, SQL, Hibernate, REST, Kafka, Docker and Kubernetes. Familiarity with cloud services, CI/CD, observability, security and automated testing is important for production systems.

The right level depends on the system’s complexity, not a fixed number of years. A smaller service may need solid Java and testing skills, while a regulated platform or large migration calls for proven experience with architecture, performance, security and operational ownership.

Yes. Java projects are often well suited to remote collaboration because source control, automated builds, issue tracking and cloud environments support distributed teams. Agree on communication routines, access controls, working hours and any on-site workshops before the engagement begins.

Java refers to the language and its broader platform. The JDK provides the tools needed to compile, test and package applications, while the JVM runs compiled bytecode; selecting and maintaining the right JDK version is part of responsible project work.

Ask for examples of systems they have delivered and explore the decisions behind API design, data access, testing and failure handling. A capable Java professional can explain trade-offs plainly, identify risks early and show how their work remained maintainable after release.

Java teams often choose Spring Boot when they need production-ready services with convention-based configuration, dependency injection and broad integration support. It is not automatically the right choice for every application, so the decision should consider existing architecture, team skills, runtime needs and operational constraints.

The average hourly rate of freelancers in Vienna, Austria who have used Java in their recent projects is 100 €, which corresponds to a daily rate of about 802 € based on an 8-hour working day.

Of the freelancers in Vienna, Austria who have used Java in their recent projects, 88% hold at least a Bachelor's degree, 66% hold at least a Master's degree, and 9% hold a doctorate.

On average, freelancers in Vienna, Austria who have used Java in their recent projects have 19 years of professional experience, with a single engagement typically lasting around 2.4 years.

The most common languages among freelancers in Vienna, Austria who have used Java in their recent projects are German (100%), English (94%), and French (28%).

The most common industries among freelancers in Vienna, Austria who have used Java in their recent projects are Information Technology (89%), Government and Administration (56%), and Banking and Finance (53%).

The most common business areas among freelancers in Vienna, Austria who have used Java in their recent projects are Information Technology (100%), Product Development (83%), and Quality Assurance (58%).

Main locations of FRATCH Experts, who have recently used Java

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

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