Keycloak Experts in Cologne
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Meet FRATCH Experts in Cologne, who have recently used Keycloak
Hamdi Rajab
Last position:
Full-Stack AI Developer at Karray-Pflege GmbH
PFS-Matching-App
- Integrated an intelligent LLM chatbot using LangChain4j, enabling conversational AI, context-aware question answering, document summarization, and autonomous tool execution.
- Implemented Retrieval-Augmented Generation (RAG), prompt engineering, and AI agent workflows to connect large language models with enterprise data and backend services.
- Developed RESTful APIs and secure backend services to support AI-driven interactions and business processes
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
Manuel Schneider
Last position:
Project Manager at Univention
Industry: digital sovereignty, public sector
Content:
- Project steering (teams: consulting, development, testing, deployment/operations)
Products and standards:
- Jira, Confluence, Asana, Miro, Mural
- Open Source, Keycloak, Open Xchange, ownCloud
Pierre Gronau
Last position:
Ansible Automation, Windows Third Level Support at DB InfraGO AG
- PRISMA project
- Ansible automation
- Windows third level support for Windows NT, Windows 2000, Windows 2013, Windows 2016, Windows 2019
Vladimir Maznicenko
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
Sara Schönherr
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 Keycloak
Aggregated from the professional profiles of matched freelancers.
Experience
18 years
Position duration
1.3 years (Germany: 1.7 years)
Positions per freelancer
23 (Germany: 13)
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Automotive, Banking and Finance
Certification focus areas
Information Technology, Product Development, Business Intelligence
Bachelor's degree or higher
100% (Germany: 87%)
Master's degree or higher
86% (Germany: 53%)
Doctorate
14% (Germany: 10%)
Certifications per freelancer
2
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 Keycloak
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
Identity control
Keycloak is used to manage login, access, and identity across web apps, APIs, and internal tools. It centralizes authentication so teams do not build custom sign-in logic in every service. Companies use it when they need single sign-on, social login, or user federation in one place.
Core setup
A strong Keycloak specialist works with realms, clients, roles, groups, and token settings. They tune OpenID Connect and SAML flows, configure identity providers, and align session and logout behavior with the application landscape. Good setup work keeps access clean and predictable.
Typical delivery
- Single sign-on for portals and internal systems
- User federation with LDAP or Active Directory
- Client setup for web, mobile, and API access
- Role design and access policies
- Login and consent flow adjustments
Ecosystem skills
Keycloak sits close to OAuth 2.0, OpenID Connect, SAML, LDAP, and directory services. Experts often also work with Java ecosystems, reverse proxies, container setups, and cloud environments. Strong professionals understand where identity ends and application authorization begins.
When freelancers help
Teams bring in freelance Keycloak professionals during new rollouts, migrations from older identity tools, or when login problems block releases. This is common in Cologne when companies need experienced support for enterprise systems, customer portals, or mixed on-site and remote collaboration. Short-term help is also useful for reviews and hardening.
What good looks like
A reliable specialist documents the flow, avoids fragile custom code, and checks token lifetimes, key rotation, and session handling. They test edge cases such as password resets, logout, and provider failure. The best experts leave the identity setup easy to operate, extend, and audit.
Frequently asked questions
Need clarity? These are the questions we hear most often about Keycloak.
Keycloak is used to control sign-in, single sign-on, and access across apps and APIs. It helps companies keep identity logic out of individual services and manage users, roles, and external identity providers in one place. That makes it a common fit for portals, internal systems, and customer-facing platforms.
Keycloak is often chosen when teams want a self-managed identity layer with support for OpenID Connect, OAuth 2.0, and SAML. Compared with lighter libraries, it covers more of the identity lifecycle; compared with fully managed identity services, it gives more control over setup and hosting. The right choice depends on your security model and operating preferences.
A strong Keycloak specialist usually understands LDAP or Active Directory, token-based authentication, and common proxy or container setups. Knowledge of Java-based systems, API security, and browser session behavior also helps. These skills matter because identity work often touches many layers of the application stack.
A simple login integration may need only focused setup work, but a full identity rollout needs someone who has handled client registration, federation, and logout behavior before. Keycloak becomes more demanding when multiple apps, external identity providers, or legacy directories are involved. In those cases, proven delivery matters more than general security knowledge alone.
Yes. Keycloak can connect to LDAP and Active Directory for user federation and can also act as a central login layer on top of existing directories. That makes it useful when a company wants modern sign-in without replacing the current user store.
Most Keycloak work can be done remotely because it relies on configuration, testing, and application integration. On-site time can help at the start of a rollout or when access to internal systems, security teams, or legacy infrastructure is needed. In Cologne, many teams use a mix of remote delivery and local workshops.
Look for clear reasoning about realms, clients, roles, token settings, and identity provider flows, not just basic login setup. A strong Keycloak professional can explain trade-offs, document decisions, and show how they handled logout, renewal, and error cases. Clean configuration and stable integrations are better signs than clever shortcuts.
Common signs are broken single sign-on, confusing role handling, failed token validation, or slow release cycles around authentication changes. Keycloak expertise is also useful when a team plans a migration, adds a new identity provider, or needs to harden access flows. These issues usually need someone who can trace identity across the full system.
The average hourly rate of freelancers in Cologne, Germany who have used Keycloak in their recent projects is 99 €, which corresponds to a daily rate of about 792 € based on an 8-hour working day.
Of the freelancers in Cologne, Germany who have used Keycloak in their recent projects, 100% hold at least a Bachelor's degree, 86% hold at least a Master's degree, and 14% hold a doctorate.
On average, freelancers in Cologne, Germany who have used Keycloak in their recent projects have 18 years of professional experience, with a single engagement typically lasting around 1.3 years.
The most common languages among freelancers in Cologne, Germany who have used Keycloak in their recent projects are German (100%), English (100%), and French (38%).
The most common industries among freelancers in Cologne, Germany who have used Keycloak in their recent projects are Information Technology (88%), Automotive (75%), and Banking and Finance (63%).
The most common business areas among freelancers in Cologne, Germany who have used Keycloak in their recent projects are Information Technology (100%), Product Development (88%), and Quality Assurance (88%).
Main locations of FRATCH Experts, who have recently used Keycloak
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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