Elasticsearch Experts in Düsseldorf
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Meet FRATCH Experts in Düsseldorf, who have recently used Elasticsearch
Ramzi A.
Last position:
Full Stack Java Developer at ISO Public Services GmbH
- Contributed to the development of an advanced RAG AI Chat application that integrates multiple LLM models, enabling users to seamlessly switch between models based on specific tasks. This improved the user experience by providing tailored, efficient solutions for various use cases, such as event scheduling, booking systems, and complex task management.
- Participated in designing and implementing a robust backend architecture using Spring AI, enabling advanced AI-driven capabilities like intelligent task automation, language processing, and contextual recommendations. Leveraged Spring AI Tools and Advisors to enhance the performance and decision-making of the AI models.
- Collaborated on the integration of vector databases to support embeddings, enhancing the app's ability to understand user queries and perform actions based on complex, real-time data inputs.
- Contributed to the development of a seamless, user-friendly front-end interface using React with TypeScript support, ensuring a modern, responsive, and scalable user experience across platforms.
- Assisted in implementing state management with Redux RTK for efficient data flow and real-time updates, optimizing the overall user experience in dynamic scenarios such as scheduling and task management.
- Partnered with stakeholders to define feature requirements, helping ensure that the app could scale to meet evolving business needs and integrate with other systems like calendar and email services. Worked alongside cross-functional teams, including data scientists and UI/UX designers, to fine-tune AI models and ensure alignment with project goals.
- Contributed to ensuring end-to-end system performance, security, and compliance by helping integrate authentication mechanisms, role-based access control, and secure communication protocols in both backend and frontend layers.
Technology Stack and Key Contributions:
- Java / Spring Boot / Spring AI: Developed backend services leveraging Spring AI for intelligent responses, task automation, and complex workflows.
- React / TypeScript: Built intuitive user interfaces with React and TypeScript, ensuring a smooth and scalable frontend.
- Redux RTK: Managed application state with Redux RTK for optimized state management, enabling dynamic, real-time data updates.
- Vector Databases: Integrated vector databases (pgVector) for embedding support, improving AI model performance in handling complex queries.
- PostgreSQL / Redis: Managed persistent and temporary data with relational and in-memory data stores, ensuring data integrity and speed.
- Kafka: Utilized Apache Kafka for event-driven communication and seamless integration between microservices.
- Spring Security: Ensured the security of backend services with robust authentication and authorization mechanisms.
- CI/CD & DevOps: Integrated continuous integration and deployment pipelines to ensure rapid and secure deployment of features and updates.
Andreas G.
Last position:
Senior Fullstack .NET (Core) & Angular Developer at IT Service Provider
- Supporting several agile teams in the new product development of an enterprise CRM and ERP application
- Web frontend development with Angular 17–21 (microfrontends, Domain-Driven Design, MDB-Bootstrap)
- Backend development with C# and .NET 7–10, MongoDB, MassTransit, RabbitMQ, Entity Framework Core, ElasticSearch (microservices, DDD)
- Technical feature design for assigned tasks
- Technical architecture design including forward-looking planning of AI-supported extension options
- Proof-of-concept implementation of AI-supported workflows with n8n and a locally hosted LLM (Ollama)
- Coordination with stakeholders and Product Owners, support with sprint planning
Result: Delivery of production-ready microservices and frontend modules in agile sprint cycles.
Environment: .NET 7–10 · Angular 17–21 · C# · TypeScript · OpenAPI · Microfrontends · DDD · Kubernetes · Docker · Helm · MS SQL Server · PostgreSQL · MongoDB · MassTransit · RabbitMQ · EF Core · ElasticSearch · Kibana · Azure DevOps · KeyCloak · n8n · Ollama
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
Matthias M.
Last position:
Project Manager at HSBC
- Project Manager for banking projects
- Management and coordination of the projects 'XONTRO T7 Migration' and 'UNO – Unified for New Opportunities'. Management of international stakeholders, preparation and leadership of steering committees, and coordination between departments, exchanges, and external partners.
- Project management of the strategic projects 'XONTRO T7 Migration' and 'UNO – Unified for New Opportunities'
- Management of international stakeholders including exchanges, custodians, and external project partners
- Coordination of functional and technical test activities at the exchanges between trading, IT, accounting, and mid-/back office
- Facilitation of steering committees at management level
- Preparation of decision papers, status reports, and risk analyses
- Conduct analyses in the areas of reporting (compliance, regulatory reporting, etc.), taxes on securities transactions & custody accounts, process analysis
- Enforcement of required requirements/specifications
- Coordination between business, IT, operations, and external market participants
- Coordination and alignment with external market participants, service providers, exchanges, and other project stakeholders
Michael H.
Last position:
Consulting, Architecture, Development at ALDI SÜD
- Solution architecture & development for a global commerce platform.
- Technologies: Spryker, PHP, AWS, SAP, VueJS
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
Discover over 15,000 top freelancers
Statistics of experts using Elasticsearch
Aggregated from the professional profiles of matched freelancers.
Experience
18 years
Position duration
1.8 years (Germany: 2 years)
Positions per freelancer
13 (Germany: 12)
Top business areas
Information Technology, Product Development, Business Intelligence
Top industries
Information Technology, Banking and Finance, Transportation
Certification focus areas
Information Technology, Business Intelligence, Product Development
Certifications per freelancer
1 (Germany: 2)
Most common languages
German, English, French
Speak two or more languages
100% (Germany: 99%)
Based on our profile pool as of 16 Oct 2026.
Daily rate distribution
The chart shows how the daily rates of experts in this technology in Düsseldorf are distributed, based on recent contracts on our platform. Each bar covers a rate range — its height shows the share of experts charging within that range.
Average rates of experts in Düsseldorf using Elasticsearch
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 16 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
Elasticsearch 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%)
- Government and Administration (50%)
- Retail (50%)
- Manufacturing (33%)
- Telecommunication (33%)
- Agriculture (17%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Search and discovery
Elasticsearch is a distributed search and analytics engine built on Apache Lucene. Companies use it to index structured and unstructured data, then retrieve relevant results with low latency. It supports full-text search, filtering, sorting, aggregations and relevance tuning for websites, applications and internal systems.
Core use cases
Elasticsearch can power customer-facing search as well as operational data workflows.
- Product, content and document search with autocomplete and typo tolerance
- Log analysis and application observability through the Elastic Stack
- Real-time dashboards, metrics and event exploration
- Geospatial search, recommendations and security event analysis
Elastic Stack toolkit
The wider Elastic Stack combines Elasticsearch with Kibana for visualization and exploration, Logstash for data ingestion, and Beats for lightweight collection. Strong specialists also work with Elastic integrations, ingest pipelines, index templates, aliases, data streams and the Query DSL. They connect these components to cloud services, databases, message brokers and application APIs.
When expertise matters
Companies often bring in freelance expertise when search quality is inconsistent, indexing becomes difficult to maintain or a log environment needs a clearer structure. Specialists can design mappings, analyze slow queries, plan shard and replica settings, and migrate data safely. In Düsseldorf, they may support local teams on-site or collaborate remotely across multilingual projects.
- Search relevance needs measurable improvement
- Index growth requires lifecycle and retention planning
- A legacy cluster needs migration or version alignment
- Dashboards must turn operational data into useful signals
Skills that distinguish specialists
A capable professional understands both search behavior and distributed systems. They can choose analyzers, tokenizers and field types carefully, prevent mapping conflicts, and explain trade-offs between denormalization and application-side joins. They also know how query profiling, load testing, snapshots, security controls and monitoring affect production reliability.
Choosing the right professional
Review work involving comparable data volumes, query patterns and availability needs rather than judging Elasticsearch knowledge in isolation. Ask how the specialist would model documents, test relevance, handle failed nodes and control index growth. For Düsseldorf-based collaboration, clarify language, on-site expectations, access procedures and handover documentation before work begins.
Frequently asked questions
Need clarity? These are the questions we hear most often about Elasticsearch.
Elasticsearch is used for fast full-text search, filtering, log analysis and near-real-time analytics. It can index documents, events and application data, then expose results through queries, aggregations and dashboards.
Elasticsearch is designed for distributed search and relevance-oriented retrieval, while a relational database is usually the system of record for transactional data. Elasticsearch can complement a database, but it should not automatically replace one when strong transaction guarantees and relational joins are central.
A strong Elasticsearch specialist often works with Kibana, Logstash, Beats, REST APIs and the Query DSL. Experience with cloud infrastructure, containers, Linux, observability, data modeling and application languages is also valuable.
The right level depends on the scope, data model and production risk. A focused search feature may need a specialist who can design mappings and relevance, while a distributed migration or critical observability environment calls for deeper experience with cluster operations, resilience and performance testing.
Yes. Elasticsearch work is often suitable for remote collaboration through shared repositories, tickets, dashboards and secure environments. On-site sessions in Düsseldorf can still help with discovery, access planning, workshops and knowledge transfer.
A well-run Elasticsearch engagement should produce clear mappings, index templates, ingestion rules and tested queries. It should also document retention, backups, access controls, monitoring, failure handling and the process for deploying changes safely.
Ask the specialist to explain relevance decisions, shard design, mapping choices and expected failure modes in plain language. Good Elasticsearch work includes reproducible tests, query profiling, sensible observability and documentation that another professional can maintain.
Elasticsearch may be unsuitable when the workload depends mainly on complex transactions, strict relational consistency or simple queries already handled well by an existing database. It can also add unnecessary operational overhead if there is little search or analytics value to justify a separate system.
The average hourly rate of freelancers in Dusseldorf, Germany who have used Elasticsearch in their recent projects is 96 €, which corresponds to a daily rate of about 769 € based on an 8-hour working day.
On average, freelancers in Dusseldorf, Germany who have used Elasticsearch in their recent projects have 18 years of professional experience, with a single engagement typically lasting around 1.8 years.
The most common languages among freelancers in Dusseldorf, Germany who have used Elasticsearch in their recent projects are German (100%), English (100%), and French (17%).
The most common industries among freelancers in Dusseldorf, Germany who have used Elasticsearch 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 Elasticsearch in their recent projects are Information Technology (100%), Product Development (100%), and Business Intelligence (83%).
Main locations of FRATCH Experts, who have recently used Elasticsearch
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 
Cologne 
Frankfurt 
Leipzig Request a free demo
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Philipp Thomaschewski
FRATCH CEO
