Elastic Stack Experts in Cologne
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Meet FRATCH Experts in Cologne, who have recently used Elastic Stack
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.
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.
Andreas Ernst
Last position:
Consultant at Iteratec GmbH
Alexander Vasiliev
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
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
Sebastian Thees
Last position:
Software Engineer / Cloud Engineer at OC Fulfillment GmbH
- Hybrid role as the first software engineer in the company to bootstrap the organization, laying out technical foundation and advising management on organizational aspects.
- Set up the SaaS platform architecture, selected languages and tools, and designed processes to deliver customer value quickly and reliably.
- Designed and implemented build and continuous deployment pipeline with multi-tenant approach enabling extreme scaling of the SaaS platform.
- Established initial ITSM and support processes, provided monitoring and alarming, and participated in the on-call team.
- Proposed new approaches to scale the platform and improve backend interfaces to mitigate bugs and communication overhead.
- Mentored new employees and served as a trustful team member and lateral leader.
- Conducted interviews for technical roles.
- Used technologies: Typescript, Node.js, Bash, Google Cloud Platform (App Engine, Cloud Run, Cloud Functions, Google Endpoints, Firebase), GitHub Actions, Docker, Terraform, MongoDB, Firebase, REST APIs, GraphQL.
Jacqueline Haefke
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
Jacqueline Krech
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 Elastic Stack
Aggregated from the professional profiles of matched freelancers.
Experience
23 years (Germany: 18 years)
Position duration
2.2 years (Germany: 2.1 years)
Positions per freelancer
21 (Germany: 12)
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Transportation, Retail
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
100% (Germany: 88%)
Master's degree or higher
83% (Germany: 52%)
Certifications per freelancer
2 (Germany: 4)
Most common languages
German, English, Persian
Speak two or more languages
100% (Germany: 96%)
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 Elastic Stack
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
Search and observability
Elastic Stack is used to search large data sets, explore logs, and monitor systems in real time. Teams rely on Elasticsearch and Kibana to turn raw events into useful views for support, operations, and product work.
Core parts
A strong setup usually combines:
- Elasticsearch for indexing and search
- Kibana for dashboards and analysis
- Logstash for data pipelines and transforms
- Beats or Elastic Agent for collecting data at the source
Typical work
Experts help with ingestion design, index mapping, query tuning, dashboard creation, alert rules, and role-based access. They also review data quality so that search results and observability views stay reliable as volume grows.
When specialists help
Companies bring in freelance Elastic Stack professionals when a search project is slow, logs are hard to read, or a migration needs clean execution. In Cologne, this often fits software teams, media companies, e-commerce operations, and industrial environments that need clear visibility across distributed systems.
What strong experts do
- design stable index and shard strategies
- write useful queries and filters
- build dashboards that answer real questions
- tune pipelines for noisy or changing data
- document decisions for in-house teams
Good fit for the project
The best specialists know how Elasticsearch, Kibana, Logstash, and Beats work together and where each one breaks down. They ask about data shape, retention, access control, and failure modes before they change anything, which keeps the stack useful after handover.
Frequently asked questions
Need clarity? These are the questions we hear most often about Elastic Stack.
Elastic Stack is used for search, log analysis, metrics, and alerting. Companies bring it in when they need a single place to inspect application events, operational data, or content search. It is especially useful when teams want fast investigation and clear dashboards.
Elastic Stack is the broader name for the ecosystem that many people still call ELK Stack. In practice, ELK usually refers to Elasticsearch, Logstash, and Kibana, while the newer Elastic Stack naming also includes Beats and Elastic Agent. A good specialist knows both terms and can work across older and newer setups.
A strong Elastic Stack specialist understands data modeling, query design, and pipeline work. They should also be comfortable with Kibana dashboards, access control, index lifecycle management, and troubleshooting ingestion issues. For many projects, Linux, APIs, and cloud deployment knowledge matter too.
Elastic Stack help is worth bringing in when search relevance is off, logs are inconsistent, or an existing setup has become hard to maintain. It also helps during migrations, security reviews, and dashboard rebuilds after a product change. If the team needs quick clarity, a specialist can save a lot of trial and error.
Elastic Stack is often chosen for flexible search and observability with deep control over indexing and queries. Compared with Splunk, it can feel more hands-on to operate, and compared with OpenSearch it offers a different ecosystem and commercial model. The right choice depends on data shape, team skills, and how much control the company wants.
Elastic Stack work is often done remotely because most tasks involve configuration, data checks, and dashboard reviews. Cologne teams may still ask for on-site sessions when they need workshops with operations, security, or product stakeholders. A good specialist can switch between both without losing context.
Look for clear questions about data sources, mappings, retention, and failure cases. A good Elastic Stack freelancer does not just build dashboards; they explain why each index, pipeline, or alert exists. Clean handover notes and practical decisions are a strong sign of quality.
Yes, Elastic Stack is often used for both. Many teams use Elasticsearch to power site search, internal search, or product discovery, then use the same stack for logs and monitoring. The best specialists know how to keep those use cases separate enough to stay fast and easy to manage.
The average hourly rate of freelancers in Cologne, Germany who have used Elastic Stack in their recent projects is 95 €, which corresponds to a daily rate of about 758 € based on an 8-hour working day.
Of the freelancers in Cologne, Germany who have used Elastic Stack in their recent projects, 100% hold at least a Bachelor's degree and 83% hold at least a Master's degree.
On average, freelancers in Cologne, Germany who have used Elastic Stack in their recent projects have 23 years of professional experience, with a single engagement typically lasting around 2.2 years.
The most common languages among freelancers in Cologne, Germany who have used Elastic Stack in their recent projects are German (100%), English (100%), and Persian (11%).
The most common industries among freelancers in Cologne, Germany who have used Elastic Stack in their recent projects are Information Technology (89%), Transportation (67%), and Retail (67%).
The most common business areas among freelancers in Cologne, Germany who have used Elastic Stack in their recent projects are Information Technology (100%), Product Development (89%), and Quality Assurance (78%).
Main locations of FRATCH Experts, who have recently used Elastic Stack
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 
Munich 
Frankfurt 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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We always have the time for a call or email!
Philipp Thomaschewski
FRATCH CEO
