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Java Experts in Vienna

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Hire experts who build Spring-based services, Java SE applications, Jakarta EE systems, and JVM integrations. Get fast, precise matching with vetted, available freelancers.

Meet FRATCH Experts in Vienna, who have recently used Java

Verified expert

John Ampia-Addison

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Senior DevOps Engineer

Vienna
John Ampia-Addison

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

Alexander Vasilenko

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Senior Cloud & Kubernetes Architect

Vienna
Alexander Vasilenko

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

Burak Elalmis

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Senior Developer (Freelancer)

Burak Elalmis

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

Michael Langer

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IAM Developer & IT Architect

Vienna
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

Verified expert

Nikola Neloski

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Founder and CEO - Senior Business Analyst

Wien
Nikola Neloski

Last position:

Founder and CEO - Senior Business Analyst at fintechno AI GmbH

  • Business analysis
  • Requirements engineering
  • System design
  • Various insurance projects
  • Technology stack: msg.Billing (in-/ex-collection)
  • Product: Pay-per-use car insurance based on blockchain and OBD-II real-time telemetry with AI
Verified expert

Mark Kiel

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Business Analyst / Business Designer

Vienna
Mark Kiel

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

Jori Martini

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Agile IT Manager Healthcare Systems

Wien
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
Verified expert

Michail Matjuchin

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

Vienna
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.

Verified expert

Daniel Auferbauer

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Solution Architect and Fullstack Developer

Wien
Daniel Auferbauer

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

Damir Dudakovic

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Senior IT Consultant

Vienna
Damir Dudakovic

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

Fabio Galvagni

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IT Architect, Requirements Analyst and Consultant

Vienna
Fabio Galvagni

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 Turhan

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Java Backend Developer

Vienna
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"
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 Welk

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Software Development

Vienna
Frank Welk

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

Discover over 15,000 top freelancers

Statistics of experts using Java

Aggregated from the professional profiles of matched freelancers.

Experience

19 years

Position duration

2.5 years

Positions per freelancer

10

Top business areas

Information Technology, Product Development, Quality Assurance

Top industries

Information Technology, Banking and Finance, Government and Administration

Certification focus areas

Information Technology, Project Management, Product Development

Bachelor's degree or higher

88%

Master's degree or higher

66%

Doctorate

9%

Certifications per freelancer

3

Most common languages

German, English, French

Speak two or more languages

94%

Based on our profile pool as of 30 Aug 2026.

Daily rate distribution

0 4 8 12 16
<€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.

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. 804 €

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 30 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.

About the technology

Core uses

Java is used for business back ends, APIs, event-driven services, batch jobs, and large internal systems. It is also common in Android tooling, data processing, and integration layers where stability matters. Teams choose it when they need code that runs reliably on the JVM and fits complex enterprise environments.

Ecosystem

Java work often means more than the language itself. Strong professionals know the JDK, JVM tuning, Maven or Gradle, testing with JUnit, and frameworks such as Spring Boot or Jakarta EE.

  • Design clean service layers and domain models
  • Build REST APIs and messaging integrations
  • Maintain legacy Java SE and J2EE codebases
  • Set up build, test, and release workflows

When companies hire

Companies bring in Java specialists when a product needs new modules, a modernization project needs careful refactoring, or a release is blocked by hard-to-isolate defects. In Vienna, this is common in finance, insurance, public-sector work, logistics, and other systems with long-lived application landscapes. Remote support is common, but on-site time can help during discovery, architecture reviews, or handover.

What strong experts do

A strong Java professional writes readable code, understands concurrency, and knows how to keep performance predictable under load. They can trace problems through logs, tests, and runtime behavior instead of guessing. They also communicate trade-offs clearly, which matters when older Java systems must evolve without breaking what already works.

Modern stack

Java projects often include Spring Boot, Hibernate, REST, Kafka, Docker, and Kubernetes, plus CI pipelines and observability tools. Good specialists know when to keep a solution simple and when to add another framework or library. They can work across monoliths, microservices, and shared platform services without losing consistency.

Search signals

Look for experts who have worked with Java SE, the JVM, and the libraries your stack already uses. If your codebase still carries J2EE history, ask how they handle migration toward Jakarta EE or Spring-based patterns. The best candidates explain how they will reduce risk, improve maintainability, and keep delivery moving.

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Frequently asked questions

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

Java is used for back-end services, internal business systems, APIs, batch processing, and integration work. It is also common in software that must stay stable for a long time, especially when teams need the JVM ecosystem, mature tooling, and predictable deployment options.

Java is usually chosen for broad ecosystem support, mature enterprise libraries, and teams that need a proven path for large systems. Kotlin is often preferred for newer JVM code with a lighter syntax, C# is common in Microsoft-heavy environments, and Go is often used for smaller services where simplicity is the priority.

A strong Java specialist usually knows Spring Boot, Maven or Gradle, JUnit, SQL, and REST API design. For modern systems, Kafka, Docker, and basic cloud deployment knowledge are often important too. If the role touches legacy systems, Jakarta EE or older J2EE patterns can matter as well.

A good Java freelancer can start with a focused codebase and a clear problem statement, but they still need access to tests, logs, build scripts, and deployment details. For larger systems, a short discovery phase helps them understand modules, data flows, and the rules that the team must not break.

Bring in Java expertise when delivery is blocked, a legacy application needs refactoring, or a release needs a quick review before go-live. Freelancers are also useful when your team needs extra hands for a migration, a performance fix, or a short-term architecture assessment.

Yes, Java work is often done remotely because most tasks depend on source code, tests, and clear communication. For Vienna teams, a hybrid setup can still help at the start of a project, during workshops, or when stakeholders want faster alignment on requirements and design.

A strong Java professional explains trade-offs, writes tests that protect behavior, and keeps code easy to change. Look for evidence of clean APIs, sensible use of the JVM, and practical debugging skills. Good candidates also ask about deployment, monitoring, and ownership, not just the code itself.

Java is the language and ecosystem most people mean when they talk about application development. The JDK is the toolset used to build and run it, while the JVM is the runtime that executes the bytecode. If a freelancer understands all three, they can solve problems at both code and runtime level.

The average hourly rate of freelancers in Vienna, Austria who have used Java in their recent projects is 101 €, which corresponds to a daily rate of about 804 € 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 2.5 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%), Banking and Finance (56%), and Government and Administration (56%).

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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