Jenkins Experts in Cologne
matched in minutes with vetted freelancers and the power of AI.Hire experts who set up Jenkins pipelines, automate builds and tests, and keep release workflows stable across teams. Get fast, precise matching with vetted, available freelancers.
Meet FRATCH Experts in Cologne, who have recently used Jenkins
Hooman Behmanesh
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 Dinler
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
Christoph Sawicki
Last position:
Test Manager at Logistics
- Coordination and planning, execution, documentation, and analysis of test cases
- Development of test concepts considering best practices (e.g., test pyramid) with a focus on reliable, automatable test runs
- Implementation and maintenance of test cases according to the test concepts
- Technologies: Citrix Workspace, Shopify, Jira, Xray, MS Teams, MS SharePoint, Confluence, MS Office 365
Nenad Biresev
Last position:
Safety Video Analytics Project for Airbus at Airbus
- Developed a real-time video analytics proof-of-concept for deployment on NVIDIA Jetson edge devices.
- Implemented DeepStream pipelines including object detection, tracking, human pose estimation, face anonymization, and zone intrusion detection.
- Built a Qt/Python demonstration UI interfacing with the AI pipeline via REST APIs.
Fahad Razzaq
Last position:
Data Science – Operations Optimization at Netto-marken
Project: Digitalization of Warehouse Processes | Building a Data Analytics Platform.
- Built a web-based workforce allocation system that digitized daily shift planning by matching worker expertise to operational zones, replacing manual coordination with a structured workflow adopted across the site, saving supervisors time on daily planning.
- Developed a real-time operational visibility dashboard giving supervisors a live view of task throughput and outstanding workload across warehouse zones throughout the day, helping reduce overtime and idle labour costs.
- Developed a slotting optimization solution to improve warehouse picking efficiency and reduce picking time per order, working directly with operations teams from concept through production deployment.
Technologies used: Python, Django, PostgreSQL, Pandas, NumPy, HTML, Java, JavaScript, Docker, Kubernetes, AWS, Power BI, GitHub Actions CI/CD, GitOps, Claude, OpenAI
Sophia Wagner
Last position:
AI Engineer & Technical Consultant at Freelance
- Delivered ML pipelines for OCR, semantic search, and computer vision
- Integrated Azure AI Agents and GPT workflows for automation and QA
- Deployed cloud-based FastAPI services with scalable architecture
- Created integration docs and advised on LLM production readiness
Rainer Langbehn
Last position:
Senior IT Consultant, Senior Software Architect, Senior Software Developer, Senior DevOps Engineer at Techniker Krankenkasse
Automation of the database major / minor releases for the TKeasy project
Concept for database major / minor release automation
As-is analysis
Evaluation of Redgate Flyway functionality
Concept creation
Products: Redgate Flyway, GitHub, Quest, Erwin Data Modeller, Oracle, Atlassian Jira, Atlassian Confluence
Skills: Docker, Continuous Delivery, Continuous Integration, Redgate Flyway, Major Releases, Minor Releases
Stefan Marx
Last position:
Bundesrechtsanwaltskammer
- Design, planning and execution of complex acceptance tests for a document exchange platform for the German justice authorities.
- Validation of decrypted and certificate-based message exchange via web platform, mobile app, and Java API.
- Documentation of test cases, execution steps, and test results.
- Technologies: Windows 11/10, Ubuntu, iOS, Android, Bash for Windows, Java 17, IntelliJ, Git, Jira, Confluence, Citrix Server, xJustiz standard implementation, specific justice software.
Thomas Pawlitzki
Last position:
Freelance Software Architect at Self-employed
Stanislaus Stelle
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
Alexander Rautzenberg
Last position:
Business Analyst at Financial Services Provider Landesbank
The Helaba ATLAS project aims to modernize core systems and make them future-proof. As part of the subproject, the existing legacy system for international payments is being replaced by a modern web-based application.
- Analysis of functional and technical requirements
- Analysis and optimization of business processes
- Process modeling
- Preparation and facilitation of workshops
- Defining project scope and prioritizing requirements
- Business process management (analysis, modeling, and optimization)
- Specification of user stories
- Designing business and authorization concepts
- Testing and acceptance
- Designing mockups in Figma
- Creating the UI/UX style guide for web applications Approach: Scrum (agile) Technologies: Jira, Confluence, MS Teams, Conceptboard, Java, Vaadin, Figma
Yannick Tessa
Last position:
Cloud Architect at Anonymous
- Implementation of Infrastructure as Code (IaC) with Terraform to ensure a scalable, repeatable, and secure Azure infrastructure
- Implementation and optimization of CI/CD pipelines with Azure DevOps
- Management of container and server environments and AKS
Markus Glagla
Last position:
Full Stack Developer at REWE Digital
- A warehouse valuation system was reimplemented using Java, Spring Boot, and Camunda. The backend solution focuses on integration and batch calculations, the frontend on managing formulas and reviewing results.
- Java 21
- Spring Boot
- JPA
- Maven
- REST
- Kafka
- PostgreSQL
- DB2
- Liquibase
- Google Cloud Storage
- Keycloak
- GitLab CI/CD
- Helm
- Terragrunt
- SonarQube
- Angular
- IntelliJ
- JUnit 5
- Mockito
- Open API
Jens Hagemeyer-Lee
Last position:
#52 Test Manager in Safety-Critical Infrastructure at Telecommunications Company
- Network elements, network, operational and operator-related systems
- Supporting around 20 different products (managed agile)
- Requirements analysis and management (functional and non-functional)
- Test concept and planning (scope, test phases, effort, schedule, resources, organization, etc.)
- Aligning approach with clients and service providers
- Managing and assisting in creation of test cases for system, integration and end-to-end tests
- Guiding and supporting test execution
- Defect management and planning bug fixes with external providers
- Preparing and facilitating workshops
- Regular reporting and creating automated test reports
- Further development of agile testing methodology and configuration of supporting tools
- Conceptual support in developing a quality seal for rating product and service quality of internal and external providers
- Requirements engineering based on ISO/IEC 25010, Scrum, SaFE
- BMC Remedy, Atlassian Confluence, Atlassian Jira (including plugins Xray, Structure), Microsoft Office (incl. Visio), Obsidian, doxis document management system, Gitlab, Obsidian
Ayhan Gezer
Last position:
Senior QA Engineer / Test Automation Engineer / SDET at Rewe digital
Consulting, designing, and implementing the software testing lifecycle for multiple Android apps and backends Introducing test automation with Appium, SpringBootTest, RestAssured Setting up and managing emulators Developing an E2E library, an integration library, a Testcontainers library, and other libraries Developing, implementing, and advising on CI strategies Building the test environment with Testcontainers and virtualization Developing and implementing test cases for integration tests and end-to-end tests Establishing a maintainable test architecture with low entry barriers to simplify the creation of automated tests Some tools and technologies used: JUnit, RestAssured, Testcontainers, Kubedock, Appium, Android emulator, Jira Xray, Mockito, WireMock, Spring Framework, Kotlin
Discover over 15,000 top freelancers
Statistics of experts using Jenkins
Aggregated from the professional profiles of matched freelancers.
Experience
20 years (Germany: 19 years)
Position duration
2.9 years (Germany: 5.1 years)
Positions per freelancer
15 (Germany: 13)
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Retail, Banking and Finance
Certification focus areas
Information Technology, Project Management, Product Development
Bachelor's degree or higher
97% (Germany: 91%)
Master's degree or higher
72% (Germany: 55%)
Doctorate
7% (Germany: 6%)
Certifications per freelancer
3
Most common languages
German, English, French
Speak two or more languages
100% (Germany: 97%)
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 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 Jenkins
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
Pipeline automation
Jenkins is used to automate build, test, and deployment steps for software delivery. Strong experts design pipelines that are easy to read, easy to maintain, and safe to change. They also keep the workflow aligned with the way the team ships code.
What it runs
- Continuous integration and delivery pipelines
- Build orchestration for Java, JavaScript, and container-based projects
- Test execution, release checks, and artifact handoff
- Scheduled jobs and operational automation
Jenkins often sits at the center of a wider delivery toolchain. It connects source control, test tools, artifact stores, and deployment targets into one repeatable flow.
Plugins and ecosystem
A large part of Jenkins work is choosing and maintaining the right plugins. Experts know when to use common integrations and when to keep the setup lean. They also understand credentials, shared libraries, agents, and job configuration patterns.
When companies bring in help
Companies often look for freelance Jenkins specialists when pipelines become slow, fragile, or hard to extend. It is also common during migrations from older jobs, when teams need help with shared libraries, or when a release process must be cleaned up before growth.
Cologne delivery context
In Cologne, Jenkins work often supports product teams, agencies, and enterprise IT groups that need reliable delivery pipelines. On-site workshops can help with process reviews and handover, while day-to-day pipeline work is often done remotely in English or a mix of English and German.
What strong experts do
- Keep pipelines clear, versioned, and reusable
- Reduce plugin sprawl and build instability
- Set up secure credentials and access control
- Improve test feedback and release traceability
- Document jobs so teams can maintain them without guesswork
Good Jenkins experts do more than fix a broken job. They improve the full delivery flow, from commit to release, and leave behind setups the team can run with confidence.
Frequently asked questions
What clients ask us most about Jenkins — answered in short.
Jenkins is used to automate build, test, and delivery tasks. Teams rely on it to run pipelines after code changes, check quality, and prepare releases in a repeatable way. It is especially useful when the delivery process has several steps that need to stay consistent.
Jenkins is often chosen when a team wants deep control, broad plugin support, or a long-established setup that runs across many systems. GitHub Actions and GitLab CI can feel simpler for teams already centered on those ecosystems. The best choice depends on how much customization, maintenance, and integration depth the workflow needs.
A strong Jenkins expert usually also knows source control, shell scripting, YAML where relevant, and common build tools such as Maven or Gradle. Experience with Docker, Linux, credentials handling, and release workflows is also valuable. These skills help the specialist design pipelines that are stable and easy to operate.
Jenkins help is useful when pipelines become hard to maintain, build times grow, or releases start depending on manual steps. Companies also bring in specialists for migration work, plugin cleanup, or to standardize delivery across several teams. A freelancer can often improve the setup without needing a long internal ramp-up.
Ask which parts of the Jenkins setup the specialist has owned: pipeline design, plugin management, shared libraries, security, or migration work. For Cologne-based teams, it also helps to clarify whether the work is remote, hybrid, or on-site and whether collaboration will happen in English or German. Clear expectations early on make handover much easier.
Yes, Jenkins is still a strong choice when a team needs flexible automation and a mature ecosystem. It is not always the lightest option, but it remains effective for complex delivery flows and mixed toolchains. The key is to keep the setup disciplined and avoid unnecessary complexity.
Look for a Jenkins specialist who can explain pipeline choices clearly and show how they reduced fragility or maintenance work. Good signs include clean shared code, secure handling of secrets, and a setup that other experts can understand quickly. Ask for examples of how they improved reliability, not just how they configured jobs.
Jenkins began as a fork of Hudson, so the two names often appear in older discussions and legacy documentation. Today, Jenkins is the name people usually mean when they talk about that CI server ecosystem. A freelancer who has worked with older Hudson setups may be useful during migration or cleanup work.
The average hourly rate of freelancers in Cologne, Germany who have used Jenkins in their recent projects is 96 €, which corresponds to a daily rate of about 772 € based on an 8-hour working day.
Of the freelancers in Cologne, Germany who have used Jenkins in their recent projects, 97% hold at least a Bachelor's degree, 72% hold at least a Master's degree, and 7% hold a doctorate.
On average, freelancers in Cologne, Germany who have used Jenkins in their recent projects have 20 years of professional experience, with a single engagement typically lasting around 2.9 years.
The most common languages among freelancers in Cologne, Germany who have used Jenkins in their recent projects are German (100%), English (100%), and French (18%).
The most common industries among freelancers in Cologne, Germany who have used Jenkins in their recent projects are Information Technology (90%), Retail (56%), and Banking and Finance (49%).
The most common business areas among freelancers in Cologne, Germany who have used Jenkins in their recent projects are Information Technology (100%), Product Development (85%), and Quality Assurance (72%).
Main locations of FRATCH Experts, who have recently used Jenkins
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.
Berlin 
Hamburg 
Munich 
Frankfurt 
Stuttgart 
Dusseldorf 
Dortmund 
Essen 
Bremen 
Dresden 
Nuremberg Request a free demo
Get in touch with the FRATCH team and we will get back to you within 4 hours.
Would you rather directly get in touch?
We always have the time for a call or email!
Philipp Thomaschewski
FRATCH CEO
