Apache Maven Experts in Dusseldorf
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Meet FRATCH Experts in Dusseldorf, who have recently used Apache Maven
Marijn S.
Last position:
Senior Software Engineer at Puls Security GmbH
Optimizing and acceleration of our Gitlab CI pipeline
Conceptual work for the PoC of the Zero Trust system
Extension of the policy-engine backend in Go
Extension of the policy-testing mechanism in Python
Architectural design of the PEP component of Zero Trust
Documentation of the product
Technologies: Zero Trust, Go, Python, Gitlab CI, Docker, JWT, Domain-Driven Design
Boris S.
Last position:
Generalist expert for software development at Mercor
- Training AI models, evaluating images and text UI/UX, turning the provided data into insights through OpenAI Feather as part of the machine learning workflow
Technologies: OpenAI Feather
Hassan A.
Last position:
DevOps & Observability Consultant at ALDI South (Albrecht's Discount)
- Supporting the DevOps team in Terraform-managed, multi-region AWS infrastructure to achieve environment parity.
- Developed end-to-end CI/CD pipelines using AWS CodePipeline, CodeBuild, and CodeDeploy, automating the build and deployment.
- Maintained pre- and post-deployment scripts to automate critical tasks such as database schema migrations and environment sanity checks.
- Implemented CI/CD flow specifically for hotfixes via separate Git branches, managing back-merge activities from feature branches to release branches to ensure code integrity through automated conflict resolution.
- Deployed a dedicated, lightweight sanity check application hosted cost-effectively on Azure Container Apps to run automated health and basic functional checks as a post-deployment activity triggered via pipeline.
- Investigated production incidents through code changes and AWS CloudWatch logs.
- Coordinated integration of Dynatrace APM and its APIs for monitoring purposes.
- Full stack QA strategist for a high-traffic e-commerce platform built on a layered architecture for the back-end testing of core platform services, especially the order management system in Zed and Glue layers.
- Managed automation activities, testing process, and refactoring practices.
- Responsible for framework migrations, setup, and training for new automation frameworks.
- Promoted a shift-left approach within the QA team and created the test concept.
- Participated in meetings with IT managers, business owners, product owners, and team members.
- Designed and implemented contract testing to validate API schema compatibility between the order management system and the Zed and Glue layers, reducing production-relevant breaking changes by approximately 3%.
- Led the migration to a multi-environment framework that enabled test execution across 4 country configurations from a single codebase.
- Integrated automated unit and functional tests directly into the GitLab CI/CD pipeline, reducing pipeline runtime by 32%.
- Coached and trained 5 QA engineers across Germany and Hungary in test automation, framework architecture, and best practices.
- Architected a layered backend test automation framework separating business logic, API request builders, and the database layer.
- Piloted AI-assisted testing with Playwright Agents, the Playwright MCP Server, and GitHub Copilot for automated test generation, execution, and self-healing Playwright scripts.
Marc S.
Last position:
Fullstack Developer at PLANT-MY-TREE
PLANT-MY-TREE®-per-order
The application enables Shopify merchants to automatically place tree-planting orders for every incoming order. By integrating ecological contributions directly into the purchase process, the manual effort for tracking and billing reforestation initiatives is eliminated. The system increases transparency for end customers through real-time visualizations of the ecological impact directly in the storefront. The architecture is based on a modular monolith with Spring Boot in the backend and an integrated React app inside the Shopify admin area. The solution uses webhooks to capture order data in an event-driven way and integrates the weclapp ERP system for automated monthly invoicing. An app proxy mechanism provides dynamic statistics such as CO2 compensation and planted trees without any performance loss for the merchant shop.
Tasks:
- Design of the modular software architecture based on Spring Modulith to ensure high maintainability
- Development of the event-driven business logic for evaluating Shopify orders via webhooks
- Implementation of automated invoicing by connecting the weclapp REST API
- Building the frontend using React Router and Shopify App Bridge for native integration
- Design of the database model and implementation of the persistence layer with JPA/Hibernate and Prisma
- Integration of internationalization processes for global use in the frontend and email communication
- Automation of deployment processes using Docker and GitLab CI/CD
Project skills: Java 25, Spring Boot, Spring Security, Spring Modulith, Hibernate, JPA, REST API, PostgreSQL, Maven, Liquibase, React, TypeScript, React Router, Vite, Node.js, Prisma, Zod, Docker, Docker Compose, GitLab CI/CD, Shopify CLI, Shopify App Bridge, Polaris, weclapp, i18next, Lombok, Vitest
Klajdo F.
Last position:
Independent Product Developer / Software Architect at rastr.eu
- Architected and deployed a live B2B geocoding and demographic-data platform for Germany, combining address lookup with census-based population statistics through a web application and REST API.
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
Jan G.
Last position:
Master Data Application at confidential
Visualization, search, and maintenance of various types of master data, providing them via a REST API, and implementing a variety of import and export formats.
Implementation, architecture, project management.
Technologies and tools: Angular (Signals, Signal Store, swagger-codegen, standalone components), Java, PostgreSQL, ActiveMQ, JavaScript, Spring Boot (Spring Core, Spring MVC, Spring Data/JPA via Hibernate, Spring Security, Spring Modulith), JUnit, Flyway, QueryDSL, GraphQL, REST API, Node, npm, Maven, SonarQube, GitLab CI/CD pipelines, Docker, Nexus, OpenAPI + Swagger UI, Keycloak, OAuth2, OpenID Connect, IntelliJ IDEA, Jira, Confluence.
Rishu K.
Last position:
Java Technical Lead (Agile Developer) at Accenture
- Led the development of robust, scalable, and high-performance micro-services architecture.
- Migrated legacy monolith systems to Spring Boot with RESTful APIs.
- Designed, implemented, deployed, tested, and optimized scalable backend systems ensuring high availability and performance.
- Maintained and deployed Dockerized applications on Kubernetes integrated into CI/CD pipelines.
- Collaborated with cross-functional teams, including frontend developers, product managers, and designers, to translate business requirements into scalable and efficient backend solutions.
- Mentored team members and contributed meaningful code reviews.
Jacqueline H.
Last position:
Kitchen Appliance Manufacturer
Setting up and enhancing an international subscription management system
Migrating and decommissioning a Hybris-SAP system and integrating Zuora
Implementing numerous interfaces to various systems (external and internal)
Setting up and improving monitoring with Grafana, Prometheus, and Databricks
Introducing logging with Loki
Implementing business requirements using jQuery, Thymeleaf, Spring Boot, Java, Go, and Python
Adjusting and extending the GitLab CI pipelines
Setting up and extending infrastructure as code with Terraform and ArgoCD on AWS
Setting up and running E2E and performance tests
Expanding the Databricks business intelligence solution to provide various KPIs
Responsibilities: Architecture, DevOps, development, unit tests, coaching employees and apprentices, E2E, smoke, and integration tests, agile methods consulting (Kanban, Scrum)
Technologies and methods: Java, Go, Kotlin, Node.js, Spring Boot, SOAP/REST, Quarkus, Thymeleaf, Vaadin, Slack, Jira, Confluence, IntelliJ, GitLab, SQS, Kafka, AWS, Kubernetes, Terraform, Maven, Gradle, GitLab CI, Databricks
Sara S.
Last position:
Senior Software Developer with a Focus on UI/UX at vGen GmbH
Development of an interactive prototype for the concept of an AI-supported Enterprise Architecture Management tool. The goal was to present complex relationships between IT systems, business processes, and departments in a way that is easy to understand and to support decision-making in the context of IT transformations.
The prototype combined data-driven analyses with guided questions and interactive visualizations. A central part was the integration of a RAG process to provide domain-specific EAM knowledge in context. The focus was on quick idea validation, user-centered interaction design, and the technical feasibility of a scalable overall concept.
Design, implementation, and validation of a RAG process for domain-specific EAM knowledge with Python, LangChain, and graph/vector databases (Neo4J, Milvus)
Business and technical requirements analysis as well as definition of an MVP
Development of the architecture and technology concept using Angular, Spring Boot, GraphQL, and Kubernetes
Design of an interaction concept and creation of a brand style guide with Figma
Development of interactive prototypes with Angular, Konva.js, and TypeScript
Integration of CI/CD processes with GitLab CI/CD
Discover over 15,000 top freelancers
Statistics of experts using Apache Maven
Aggregated from the professional profiles of matched freelancers.
Experience
11 years (Germany: 20 years)
Position duration
1.3 years (Germany: 1.9 years)
Positions per freelancer
11 (Germany: 14)
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Banking and Finance, Transportation
Certification focus areas
Information Technology, Project Management, Product Development
Bachelor's degree or higher
100% (Germany: 93%)
Master's degree or higher
75% (Germany: 56%)
Certifications per freelancer
11 (Germany: 3)
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 Dusseldorf 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 Dusseldorf using Apache Maven
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 Maven 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 (100%)
- Banking and Finance (50%)
- Transportation (50%)
- Retail (50%)
- Telecommunication (50%)
- Manufacturing (40%)
- Automotive (30%)
- Agriculture (20%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Build foundation
Apache Maven is a build automation and project management tool used mainly across the Java ecosystem. It defines source layouts, dependencies, plugins, tests, packaging and release steps in a project object model, usually stored in a pom.xml file. Teams use it to create repeatable builds for libraries, services, enterprise applications and reusable components.
Dependency control
Maven resolves libraries from repositories and records them with explicit coordinates, scopes and versions. Its standard lifecycle covers validation, compilation, testing, packaging, verification and installation, while profiles support controlled differences between environments. Strong configuration keeps transitive dependencies visible and reduces surprises between developer machines and CI runners.
Ecosystem and tooling
Experts work across Maven Central, private repository managers and common Java frameworks. Their work often includes:
- Designing parent POMs, BOMs and multi-module structures
- Configuring plugins for testing, quality checks, coverage and packaging
- Connecting Maven builds with Jenkins, GitHub Actions, GitLab CI or Azure Pipelines
- Managing artifact publication, release workflows and repository access
Maven integrates with IDEs such as IntelliJ IDEA and Eclipse, testing tools such as JUnit, and container or application packaging workflows.
When expertise matters
Companies bring in freelance Apache Maven specialists when builds are slow, inconsistent or difficult to release. Typical triggers include a migration from Ant or Gradle, a growing multi-module codebase, dependency conflicts, unreliable pipelines or the introduction of private artifact repositories. In Dusseldorf, remote and on-site collaboration can both work well for teams in software, manufacturing, finance and enterprise services, provided build ownership and documentation are clear.
Project deliverables
A specialist can audit an existing POM structure, simplify dependency management and establish build conventions for the whole team. Deliverables may include reusable parent POMs, version catalogs or BOM adoption, plugin configuration, CI pipeline stages, repository setup, release documentation and troubleshooting guides. They can also make local and pipeline builds produce the same artifacts.
Strong practitioners
The best professionals understand Java compilation, classpaths, packaging formats and the Maven lifecycle rather than treating POM files as isolated configuration. They explain why a plugin, scope or repository rule is needed, pin versions deliberately and test changes in clean environments. Look for evidence of maintainable multi-module builds, secure dependency handling, clear CI diagnostics and communication in the languages your Dusseldorf team uses.
Frequently asked questions
Before you brief your next project: the most common questions about Apache Maven.
Apache Maven automates builds and manages dependencies for Java and related JVM projects. It can compile source code, run tests, package artifacts, publish them to repositories and support repeatable release workflows.
Apache Maven favors convention, declarative POM files and a standardized lifecycle, which can make projects easier to understand across teams. Gradle offers a more programmable build model, while Ant is more task-oriented and usually requires more project-specific structure.
Apache Maven work often requires strong Java fundamentals, dependency analysis, Git and CI/CD knowledge. Experience with JUnit, repository managers such as Nexus or Artifactory, Docker and frameworks such as Spring can also be valuable.
A small POM cleanup may suit a professional who has handled comparable Java builds, while a large multi-module migration needs experience with lifecycle behavior, transitive dependencies and release design. For complex work, ask for examples of diagnosing build failures and maintaining pipelines over time.
Apache Maven projects are well suited to remote collaboration because POM files, CI logs and repository configuration can be reviewed in version control. Agree on documentation, access permissions, review routines and whether the team needs German communication or can work fully in English.
Bring in an Apache Maven specialist when dependency conflicts, slow builds, inconsistent environments or release bottlenecks are consuming team time. External expertise is also useful during Gradle or Ant migrations, repository changes and the standardization of several Java services.
Ask an Apache Maven professional to explain lifecycle phases, dependency mediation, plugin configuration and the trade-offs in a proposed POM structure. Good work is reproducible, documented, secure and easy to diagnose in a clean environment, not merely successful on one machine.
Apache Maven specialists should understand how local builds, CI agents and artifact repositories interact. They should also be comfortable with version control, automated tests, release management, dependency security and communicating build conventions to the wider Java team.
The average hourly rate of freelancers in Dusseldorf, Germany who have used Apache Maven in their recent projects is 84 €, which corresponds to a daily rate of about 672 € based on an 8-hour working day.
Of the freelancers in Dusseldorf, Germany who have used Apache Maven in their recent projects, 100% hold at least a Bachelor's degree and 75% hold at least a Master's degree.
On average, freelancers in Dusseldorf, Germany who have used Apache Maven in their recent projects have 11 years of professional experience, with a single engagement typically lasting around 1.3 years.
The most common languages among freelancers in Dusseldorf, Germany who have used Apache Maven in their recent projects are German (100%), English (100%), and French (20%).
The most common industries among freelancers in Dusseldorf, Germany who have used Apache Maven in their recent projects are Information Technology (100%), Banking and Finance (50%), and Transportation (50%).
The most common business areas among freelancers in Dusseldorf, Germany who have used Apache Maven in their recent projects are Information Technology (100%), Product Development (90%), and Quality Assurance (80%).
Main locations of FRATCH Experts, who have recently used Apache Maven
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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Munich 
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Frankfurt 
Stuttgart 
Nuremberg Request a free demo
Get in touch with the FRATCH team and we will get back to you within 4 hours.
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Philipp Thomaschewski
FRATCH CEO
