Keycloak Experts in Hamburg
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Meet FRATCH Experts in Hamburg, who have recently used Keycloak
Daniel Sedlack
Last position:
Senior Software Engineer at energielenker solutions GmbH
- Designed and implemented a Python-based ETL pipeline with the Dagster framework to transform raw energy data from heterogeneous sources using InfluxDB and visualizations in Grafana
- Defined time-based and dependency-based jobs
- Deployed to managed Kubernetes clusters using Helm
- Integrated InfluxDB Cloud
- Prepared data for use in Grafana, including cleaning, normalization, and time-based resampling in Python
- Developed dashboards and visualizations in Grafana
- Developed unit tests with mocking using pytest
- Set up a CI/CD pipeline in GitLab
Technologies: Python, Dagster, InfluxDB, Grafana, pandas, pytest, REST, CI/CD, GitLab, Container, Kubernetes, Helm, Docker, Cloud
Rutger Boels
Last position:
Partner & Managing Director at AI.IMPACT
- Building an AI & Data Consultancy Practice with the goal of helping European companies adopt Artificial Intelligence and modern data platforms
- End-to-end further development of a production system using modified coding agents (OpenCode). Tech stack: Kubernetes, Argo, Keycloak, Typescript, Grafana, GitOps, DevOps, Playwright
- Internal research project on the use of coding agents in the field of mathematical logic for creating formal models. Use of Cursor IDE and Codex, Codex CLI. Architecture design, quality control and refactoring, as well as writing code and tests. Repository (open source) available pre-launch
- Research on the role of mathematical logic as a formal language that connects IT and AI with business processes
- Project lead for collecting and deploying parking recommendations for rail vehicles with significant savings potential based on real-time data in a mobility and transport company
- Project lead for collecting and distributing process measurement points for real-time control in a mobility and transport company
- Deputy application owner for an app used for communication in the dispatching and provision of rail vehicles
Cornelius Höfig
Last position:
Solution Architect at STIHL
- Remodeling of the system architecture for an Azure-based platform aimed at rapid development of new functionalities
- Modeling of a staging concept for the fulfillment of diverse customer and QA needs
- Creation of requirements for, and oversight of, a proof-of-concept supplier project for a Flutter app with highly advanced BLE functionalities
- Comparison of multiple observability platforms for feasibility and requirements fit within the project environment
- Creation of a mobile app architecture based on domain-driven architecture
- Position of technical advisor and accountable solution architect for two development teams
- Execution of architecture reviews and alignment of changes with architectural expectations
- Skills & Technologies: Microsoft Azure , App Services, NodeJS Mono-repository, microservice architecture, domain driven design, self contained systems, requirements engineering, CI/CD, DevOps, API design, solution architecture
Florian Wede
Last position:
Software Engineer at micimo GmbH
- Developing a professional scheduler for organizations with specific detailed requirements
- Evaluating different existing software solutions
- Creating a list of technical requirements
- Implementing these requirements
- Selected technologies: WebDAV, CalDAV, Rust, Baikal, OAuth, Keycloak
Felix Ortmann
Last position:
Cloud Architect at uni-assist e.V.
- Project lead ‘Cloud Migration’ for moving the on-premise production environment to Scaleway.
- Transformed a Docker-Swarm legacy setup to a modern Kubernetes-based cloud environment.
- Architected a GDPR-compliant cloud landscape and deployment setup – 100% European sovereign cloud.
- Hands-on bootstrapped the cloud environment with Terraform, ArgoCD, and GitLab Pipelines CI/CD.
- Replaced the legacy VPN with modern mTLS PKI and deep AD integration.
- Managed an 11-headed agile team using Kanban, moderating team meetings and plannings.
- Successfully finished the migration, moving infrastructure, services, and data, from planning to execution.
Andreas Schmückert
Last position:
Solution Architect, Business Analyst, Consultant, Full-Stack Lead-Developer at 50Hertz Transmission GmbH
- Solution for micro-service and frontend solution for the electric grid
- Leading of development teams
- Technologies: React-Native, TypeScript, Kotlin, AWS, Infrastructure As Code, Serverless Architecture, React, NoSQL, GraphQL, Angular, Playwright, Python, ML(Ops), Kubernetes, Docker
Oliver Langer
Last position:
Developer, Architect at libri GmbH
- Role: Developer, Architect
- Technologies: java, typescript, golang, spring (boot, web, security, data), Angular, AWS (OpenSearch, Aurora, SNS/SQS, CloudWatch, EC2, IAM), Kubernetes, Terraform, Helm, OAuth, Keycloak, CI/CD, gradlew, Liquibase, Test Driven Development, shell scripting
Mark Plaatsman
Last position:
Full-Stack Software Developer, Product Data Import at Otto (GmbH & Co KG)
- Manage and operate the product data import services for the Otto merchant
- Enhance and maintain the backend systems
- Optimize and maintain AWS infrastructure
- Build a new product data import API
- Design and plan stories and features
- Conduct code reviews to ensure code quality and best practices
- Analyze and fix bugs
- Technologies: Java, Spring Boot, Kafka, AWS, Fargate, Terraform, MongoDB, Mongo Atlas, OpenAPI, GitHub, GitHub Actions, GitHub Copilot, Akhq, Debezium, JUnit, Test Containers, Hexagonal Architecture
Johannes Erchen
Last position:
Libri GmbH
- Operation and further development of the inventory system for booksellers (Quimus). It is an in-house development by Libri that is sold to customers as Software as a Service. The software is developed in an agile way by two developer teams (about 5 developers each). The software consists of around 25 Java microservices that mainly communicate via messaging and share a common Angular frontend. The application runs on Kubernetes in AWS.
- Technologies used: Java 17 & 21, Spring Boot 2 & 3, Hibernate, MySQL, Spring Cloud AWS, Lombok, AWS SQS, AWS SNS, AWS RDS, AWS S3, DynamoDB, Kubernetes, Docker, OpenSearch, Hibernate Search, Liquibase, Gradle, Terraform, Helm, GitLab CI, Keycloak OAuth2, TypeScript, Angular
- My focus until December 2023: Connecting additional POS systems to the inventory system. Connecting the data warehouse for report display. Extending existing features (goods receipts, invoicing, item management, ...). Operations and DevOps tasks.
- Focus from January 2024: Extracting the product search from the inventory system into a global service to use in other applications. Integrating the product search into the booksellers' online shops (also run by Libri). Importing and providing digital items in the product search.
Marcel Seifert
Last position:
Lead Developer / Software Architect at Rezeptprüfstelle Duderstadt GmbH
Responsible for the redevelopment of a billing and validation software for prescriptions to fully check and analyze e-prescriptions for correctness (content, billing)
System consists of multiple contexts running as services (Docker containers):
Checking and processing data deliveries via FTP and email
Management of invoicing, clearings, deductions and offsets
Management and execution of validation rules and test sets
Analytics based on Metabase
Developer Stack: Kotlin, Vue 3 / Vuetify 3, ANTLR, Spring Boot 3, REST API, Gradle, Docker, GitLab, PostgreSQL, Kafka, Keycloak, Scrum, Grafana, Loki, Testcontainers, Prometheus
Discover over 15,000 top freelancers
Statistics of experts using Keycloak
Aggregated from the professional profiles of matched freelancers.
Experience
18 years
Position duration
2 years (Germany: 1.7 years)
Positions per freelancer
10 (Germany: 13)
Top business areas
Information Technology, Product Development, Operations
Top industries
Information Technology, Retail, Professional Services
Certification focus areas
Information Technology, Human Resources, Product Development
Bachelor's degree or higher
78% (Germany: 87%)
Master's degree or higher
33% (Germany: 53%)
Doctorate
11% (Germany: 10%)
Certifications per freelancer
1 (Germany: 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 Hamburg 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 Hamburg 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 an open source identity and access management tool used for login, single sign-on, and access control across web apps, mobile apps, and APIs. It helps teams centralize authentication instead of building it into every service. Many search for it as Keycloak, Red Hat SSO, or RH-SSO.
Typical work
- Set up realms, clients, users, and roles
- Connect apps through OIDC or SAML
- Add social or enterprise identity providers
- Tune tokens, sessions, and logout flows
- Extend login with themes or custom steps
Ecosystem skills
Strong specialists understand OpenID Connect, OAuth 2.0, SAML, LDAP, and user federation. They also work with JWT handling, reverse proxies, Java-based extensions, and container deployments. For larger environments, they align identity settings with existing directory services and application security rules.
When to bring help
Companies usually bring in freelance expertise when a rollout touches many apps, when an old SSO setup needs migration, or when login is blocking a release. In Hamburg, this often fits teams in logistics, media, trade, and SaaS that need secure access across internal and customer-facing systems. Remote support is common, but on-site work helps when security, networking, and directory access are tightly coupled.
What good experts do
A strong Keycloak professional does more than click through the admin console. They design clean realm structures, document flows, test edge cases, and keep authentication stable during upgrades. They also know how to avoid brittle customizations that make future changes risky.
Practical deliverables
- Identity architecture and integration plan
- Login and SSO rollout for apps and APIs
- Migration from older SSO setups
- Custom authentication flow or theme support
- Troubleshooting for token, session, or federation issues
Frequently asked questions
Need clarity? These are the questions we hear most often about Keycloak.
Keycloak is used to centralize login, single sign-on, and access rules across multiple applications and APIs. It fits teams that want one place for user authentication, role handling, and identity federation instead of separate login logic in each system.
Keycloak is often chosen when teams want self-hosted control and deep configuration instead of a managed identity service. Compared with Auth0, Okta, or Microsoft Entra ID, it usually gives more infrastructure responsibility to the company but also more freedom around deployment and customization.
A strong Keycloak specialist usually knows OpenID Connect, OAuth 2.0, and SAML very well. LDAP, user federation, JWT handling, container basics, and secure reverse-proxy setup are also common adjacent skills.
A Keycloak project needs experienced help when it affects many apps, external customer access, or a migration from another SSO setup. It also helps when custom authentication flows, token behavior, or identity-provider links are causing delays.
Yes, Keycloak work is often done remotely because most setup, testing, and documentation can be handled online. On-site sessions in Hamburg can still be useful when the team needs close access to internal networks, directory systems, or security stakeholders.
With Keycloak, common mistakes include unclear realm design, weak role models, and custom authentication logic that becomes hard to maintain. Another frequent issue is skipping proper testing for token lifetimes, logout behavior, and identity-provider edge cases.
A good Keycloak expert can explain the full login flow in plain words and show how they would model users, clients, roles, and identity providers. Look for clean documentation, secure defaults, and practical experience with migration or production troubleshooting.
Red Hat SSO is closely related to Keycloak and is commonly mentioned by teams that know the product from Red Hat packaging and support. When people search for Keycloak, they often mean the same core IAM platform, so a specialist should understand both names and the differences in deployment context.
The average hourly rate of freelancers in Hamburg, Germany who have used Keycloak in their recent projects is 118 €, which corresponds to a daily rate of about 941 € based on an 8-hour working day.
Of the freelancers in Hamburg, Germany who have used Keycloak in their recent projects, 78% hold at least a Bachelor's degree, 33% hold at least a Master's degree, and 11% hold a doctorate.
On average, freelancers in Hamburg, Germany who have used Keycloak in their recent projects have 18 years of professional experience, with a single engagement typically lasting around 2 years.
The most common languages among freelancers in Hamburg, Germany who have used Keycloak in their recent projects are German (100%), English (100%), and French (20%).
The most common industries among freelancers in Hamburg, Germany who have used Keycloak in their recent projects are Information Technology (100%), Retail (60%), and Professional Services (50%).
The most common business areas among freelancers in Hamburg, Germany who have used Keycloak in their recent projects are Information Technology (100%), Product Development (100%), and Operations (60%).
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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