Apache Ant Experts in Cologne
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Meet FRATCH Experts in Cologne, who have recently used Apache Ant
Hooman B.
Last position:
Fullstack Developer at Möbel Roller GmbH
- Further development of the existing e-commerce platform based on SAP Commerce (Hybris) to meet the growing demands of digital commerce.
- Ensuring the scalability and performance of the backend, so the platform remained stable and efficient even under heavy user load.
- Development and integration of new OCC REST APIs and services for modular extensions and flexible adjustments, to implement new features quickly.
- Optimization of data flows and interfaces, which significantly improved platform efficiency and system performance.
- Ensuring a maintainable and scalable code base by using Clean Code principles, proven design patterns, and a future-proof architecture.
- Reduction of errors through extensive testing with JUnit, Mockito, and load tests with Gatling, supported by the introduction of automated test processes.
- Improved system performance through targeted refactoring measures and efficient database queries, especially to handle peak loads.
- Use of modern cloud and monitoring tools such as Kubernetes, Google Cloud Platform (GCP), and Grafana to ensure a stable and monitored infrastructure.
- Clear improvement in efficiency, scalability, and reliability of the platform, which now meets the demands of a dynamic and growing e-commerce market.
Burhan D.
Last position:
Enterprise Architect & Solution Architect at DB Netz AG
With project PRIZMA, DB will modernize its infrastructure on the one hand, and develop a fail-safe IT landscape on the other hand, which can be restored quickly and securely in case of a disaster.
- Capture current architectures of existing systems as well as methodical consulting and development of target architectures
- Deepen and maintain the building plan / target IT landscape
- Implement technical architecture concepts & architecture descriptions
- Implement migration concepts for updating and further developing the platform and information systems
- Assess submitted improvement suggestions as part of the project
- Capability management: identify capability gaps, develop target visions, and support transformation planning within the enterprise architecture.
- Create a compatibility matrix of the components in use and compare dependencies of specific versions
- Create an IT concept for extending the platform with the following topics: hardware and software requirements, security, licensing, high availability, load balancing, backup & recovery, update strategy, monitoring integration, etc.
- Coordinate with business architects as well as technical architects from the cross-functional architecture area of the PRISMA program for the topics (backup, Active Directory, monitoring, Citrix, and business applications ...)
- Status meetings and alignment of project planning with the Release Train Engineer / Project Manager
- Advise the Release Train Engineer / Project Manager in identifying project risks
- Advise the System Architect Engineers in steering the implementation of the concept
- Implement the IT concept
- Document the infrastructure
Label: MS Project, LINUX, Windows, ORACLE, Java, REST, SharePoint, Microsoft Exchange, UML, Enterprise Architect, BPMN, AZURE, AWS, V-MODEL, Micro Service, VisualStudio, SAP S/4HANA, SCRUM(SAFE), ESB (TIBCO), Python, Innovator, LeanIX (TOGAF), Ansible, Ansible Tower, Ansible Automation, ROBOT, SpringBoot
Thomas P.
Last position:
Freelance Software Architect at Self-employed
Allal K.
Last position:
Java Senior Full Stack Developer at Insurance ÖRAG
- Further development of a policy administration system (contract/claims) for the legal expenses insurer ÖRAG.
- My role: Senior Software Developer.
- The team consists of 12 developers.
- Technologies used: Java 8/21, Java EE, Quarkus, WebLogic, JPA, RabbitMQ, JTA, CI, CD, Jenkins, DB2, Maven, Jenkins, GIT (bitbucket) later GitLab, Junit, Elasticsearch, Mockito, Jira, SonarQube, Scrum, React, Workflow
- Migration and modernization of legacy systems: rewrote C and C++ code in Java to improve maintainability, scalability, and performance. Refactored Python into Java, including optimization and integration into modern architectures.
- Study on the use of AI (Codex) for implementing a Java feature. The goal is to compare the time spent and productivity of AI-supported development with a classic implementation by a developer. The results should show how strongly the use of AI affects development time and efficiency.
- Development of the following tariff calculators for the years 2024/2026: private, companies, doctors, farmers, owner-occupied G + H, landlords, traffic, club, top managers, sales representatives, special criminal law, savings bank, municipal, BayGT, doctors, Dehoga
Stanislaus S.
Last position:
Security Consultant at Rohde & Schwarz AG at Star Labs GmbH
- Worked on FPGA enhanced network encryption device with secure boot, TPM2.0 and smart card integration for BSI approved usage with Post Quantum Cryptography
- Developed and audited Linux drivers
- Collaborated using GitLab, Gerrit, Confluence and Jira
- Technologies: C, C++, Secure Boot
Predrag P.
Last position:
Test Developer | Test Automator at CreditReform
Technologies: Java 25, Selenium, Insomnia, SSO, GitLab, Jenkins, Docker, Kubernetes, Jira, IntelliJ, Nexus, Oracle, MariaDB, Spring Boot, Grafana, Concept Board, Vue.js, OpenAPI, Kotlin. Implementation, maintenance, and extension of automated end-to-end regression tests for UI and API interfaces. Appropriate and targeted test automation across multiple software products, including Java-based Windows applications. Automating business processes with Selenium, reset jobs, and DB import jobs, as well as creating test concepts, test case descriptions, and structured bug reporting.
Alexander V.
Last position:
Senior DevOps / Platform Engineer at Kaufland e-commerce / real.digital (ex hitmeister.de)
- Evolved the platform from bare-metal infrastructure with a monolithic PHP application to a hybrid Google Cloud architecture with Go microservices on Kubernetes
- Managed and scaled a production infrastructure with 300+ VMs and dozens of clusters, including MySQL, PostgreSQL, MongoDB, RabbitMQ, Redis and Elasticsearch clusters
- Designed architecture, deployment, monitoring, performance analysis, and upgrades for all platform services using Terraform and Ansible
- Migrated observability systems from ELK and Prometheus to Datadog, managed with Terraform
- Introduced Jenkins CI/CD with SonarQube integration and automated tests to speed up feedback cycles
- Containerized the testing environment and implemented GitLab CI pipelines for Docker image builds, static code analysis, and infrastructure tests
- Performed zero-downtime migrations of MySQL and MongoDB clusters to Google Cloud
- Developed reusable Ansible roles for database clusters and automated data obfuscation for staging environments
- Decomposed monolithic databases and migrated to microservice architectures
- Built tools to detect and optimize slow queries in MySQL and MongoDB
- Conducted online schema migrations with pt-online-schema-change without downtime windows
- Developed internal Go applications for batch queries, GitLab-Jira integration, and MongoDB backup recovery
- Technologies: Debian, Ubuntu, Alpine, Go, Bash, Python, PHP, SQL, GitLab CI, Jenkins, Drone CI, MySQL, MongoDB, PostgreSQL, Redis, Elasticsearch, RabbitMQ, Kafka, Docker, Kubernetes, Nomad, Ansible, Terraform, Grafana, ELK, Prometheus, Datadog, Nagios, Zabbix, Nginx, HAProxy, Vault, Helm, SonarQube, Filebeat, Auditbeat, Google Cloud, AWS
Vladimir M.
Last position:
Developer at Financial services provider
- Support and further development of a framework for developing applications in a banking association: DynS/OSPE
- Migration of the framework to Java 11 and Java 17
- Java8, Java11 and Java17, Spring, Spring-Batch, Spring WebServices, Spring-Security, Spring-Data, JPA, Hibernate, OpenSource libraries etc.
- XML, JAXB, JSON, REST and SOAP services, DB2, Oracle, WebSphere or Liberty AS, FreeMaker, Junit, mock libraries, JaCoCo, Maven, IntelliJ, Eclipse, GitHub, SVN, Jira
Peter B.
Last position:
Data Warehouse Consultant (Development and Analysis) at Atruvia AG
- Developed and enhanced ETL loading jobs with IBM DataStage and optimized SQL in an IBM DB2 environment as part of the Agree21 data migration
- Analyzed data quality and developed test procedures
- Created PowerShell scripts and documented GIT deployment processes
- Technologies: RedHat Linux, IBM DB2 with DBVisualizer, IBM InfoSphere DataStage 11.7, JIRA, TortoiseGIT, TortoiseSVN, PowerShell scripts
Fabian K.
Last position:
Managing Partner at FK Solution Design GmbH
- Founded FK Solution Design GmbH and acts as managing partner.
- Optimizes existing system landscapes, reduces data silos, and connects software systems.
- Enables more efficient data usage and reduces process lead time.
Last position:
Rewe Digital
- Creation of Spring Boot integration tests
- Creation of JUnit tests for the coupon system
- Creation of component tests for Kafka topics
- Creation of CI/CD pipeline scripts
- Creation of UI tests with Playwright
- Creation of UI tests with Cypress
- Review of developer unit tests
- Planning the test architecture for integration tests
- Creation of the test automation concept
- Evaluation and creation of test reports
Jacqueline K.
Last position:
OTTO
- Design, development, and monitoring of microservices
- Migrating functions from a monolithic system into separate microservices
- Designing and implementing new microservices (backend and frontend)
- Setting up and maintaining a CI/CD pipeline (GitHub Actions)
- Configuring cloud infrastructure with AWS CDK and Terraform
- Designing and implementing event-driven communication with AWS SNS/SQS and Apache Kafka
- Ensuring code quality through Test Driven Development (TDD), static code analysis, and Clean Code
Discover over 15,000 top freelancers
Statistics of experts using Apache Ant
Aggregated from the professional profiles of matched freelancers.
Experience
22 years (Germany: 24 years)
Position duration
2.3 years (Germany: 2.2 years)
Positions per freelancer
16
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Banking and Finance, Insurance
Certification focus areas
Information Technology, Project Management, Quality Assurance
Bachelor's degree or higher
90% (Germany: 89%)
Master's degree or higher
60% (Germany: 48%)
Doctorate
20% (Germany: 7%)
Certifications per freelancer
3 (Germany: 2)
Most common languages
German, English, French
Speak two or more languages
100% (Germany: 97%)
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 Cologne 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 Cologne using Apache Ant
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.
Apache Ant 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 (92%)
- Banking and Finance (58%)
- Insurance (58%)
- Retail (58%)
- Telecommunication (58%)
- Transportation (50%)
- Automotive (33%)
- Government and Administration (33%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Build automation
Apache Ant is an open-source build tool for Java and other JVM-based projects. It uses XML build files to describe tasks such as compiling source code, copying resources, packaging JAR or WAR files, and cleaning generated output. Its task-based model remains useful in established enterprise systems.
Core capabilities
Ant experts design clear, repeatable build processes and keep them dependable as a codebase changes. They work with targets, properties, paths, filesets, filters, and custom tasks, while separating environment settings from reusable build logic. They can also document the build so teams can operate it without hidden manual steps.
Ecosystem and tooling
Apache Ant commonly works alongside Java compilers, JUnit, Apache Ivy, Maven repositories, application servers, and continuous integration tools. Strong specialists understand when to use Ant alone, when to combine it with Ivy, and when to connect it with shell scripts or other delivery tooling. They can also maintain custom Java tasks and third-party task libraries.
Typical project work
- Create or refactor build.xml files for multi-module Java applications
- Package libraries, web applications, installers, and release archives
- Add unit tests, quality checks, signing, and deployment targets
- Migrate brittle manual release steps into repeatable automation
- Connect Ant builds to continuous integration and artifact repositories
When expertise matters
Companies usually bring in freelance Ant expertise when a legacy build has become difficult to change, releases depend on manual fixes, or an older Java application must be moved to a new environment. In Cologne, local teams may benefit from on-site workshops, while remote collaboration works well when build logs, repositories, and environment access are organized. German or English communication can support mixed delivery teams.
Quality indicators
A strong professional first maps dependencies, target ordering, environment variables, and generated artifacts before changing a build. They use reproducible inputs, meaningful failure messages, incremental execution where appropriate, and tests for critical targets. Good documentation, version-controlled configuration, secure secrets handling, and a practical rollback path distinguish maintainable Ant work from a quick script patch.
Frequently asked questions
Need clarity? These are the questions we hear most often about Apache Ant.
Apache Ant automates repeatable build steps, especially for Java applications and libraries. Teams use it to compile code, run tests, process resources, create archives, and deploy artifacts. Its XML build files can also coordinate custom scripts and tools.
Apache Ant gives teams detailed control over build targets and task order, but it does not impose a standard project structure or dependency model. Maven provides stronger conventions and built-in dependency management. The right choice depends on whether a project needs flexible legacy automation or a more opinionated build lifecycle.
Apache Ant can be paired with Apache Ivy for dependency resolution and repository management. A specialist can configure versioned dependencies, retrieve artifacts, and integrate them into compilation and packaging targets. This is useful when a team needs Ant's flexibility without managing every library manually.
Apache Ant work often requires solid Java build knowledge, XML, version control, JUnit, artifact repositories, and continuous integration. Experience with shell scripting, application servers, Ivy, or Maven is also valuable. These skills help a specialist connect the build to the wider delivery process.
Apache Ant projects need more than familiarity with XML syntax when builds contain custom tasks, conditional targets, generated sources, or complex release flows. The specialist should have handled similar build structures and be able to trace dependencies and failures. The required depth depends on the build's age, size, and operational risk.
Apache Ant work is usually suitable for remote collaboration when the specialist has repository access, representative build environments, and usable logs. A Cologne team may still choose on-site sessions for build discovery, release workshops, or handover. Clear English or German communication should match the wider project team.
Apache Ant quality is visible in reproducible builds, clear target names, controlled dependencies, useful errors, and documentation that explains setup and release steps. Ask the specialist to describe how they would isolate environment-specific settings and test a build change. A clean version-controlled solution is stronger than a script that only works on one workstation.
Apache Ant may be worth replacing when its build logic is opaque, dependencies are unmanaged, and routine releases require frequent manual intervention. Migration to Maven, Gradle, or another tool can improve conventions and dependency handling, but it also carries compatibility and release risk. A careful specialist should first map the existing targets, outputs, and integrations before recommending a change.
The average hourly rate of freelancers in Cologne, Germany who have used Apache Ant in their recent projects is 101 €, which corresponds to a daily rate of about 812 € based on an 8-hour working day.
Of the freelancers in Cologne, Germany who have used Apache Ant in their recent projects, 90% hold at least a Bachelor's degree, 60% hold at least a Master's degree, and 20% hold a doctorate.
On average, freelancers in Cologne, Germany who have used Apache Ant in their recent projects have 22 years of professional experience, with a single engagement typically lasting around 2.3 years.
The most common languages among freelancers in Cologne, Germany who have used Apache Ant in their recent projects are German (100%), English (100%), and French (25%).
The most common industries among freelancers in Cologne, Germany who have used Apache Ant in their recent projects are Information Technology (92%), Banking and Finance (58%), and Insurance (58%).
The most common business areas among freelancers in Cologne, Germany who have used Apache Ant in their recent projects are Information Technology (100%), Product Development (83%), and Quality Assurance (75%).
Main locations of FRATCH Experts, who have recently used Apache Ant
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.
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