Apache Solr Experts in Berlin
in minutes from over 15,000 CVs with the power of AI.Hire experts who tune Solr search relevance, build faceted navigation and filters, and design indexes for fast retrieval. Get fast, precise matching with vetted, available freelancers.
Meet FRATCH Experts in Berlin, who have recently used Apache Solr
Alexander Zhirov
Last position:
Senior Data Solutions Engineer at VMware Inc.
- Architected and deployed private cloud data platform on VMware vSphere, integrating Greenplum MPP, Apache Kafka, Kubernetes, and Apache Solr, and developed real-time ingestion pipelines with Kafka Connect and Schema Registry.
- Led Oracle Exadata to Greenplum migration, rearchitected data models, optimized storage, implemented RabbitMQ with Debezium for CDC, and deployed VectorDB for Generative AI.
- Designed and executed multi-cloud migration PoC across AWS, Azure, and GCP, defined KPIs for throughput, latency, and cost efficiency, executed bulk data transfers, validated analytics and streaming workloads, and delivered full-scale architecture recommendations.
- Assessed legacy on-premises infrastructure and designed modern cloud-native data platforms using Greenplum and containerized microservices, advising on scalability, disaster recovery, and high-availability.
Rüdiger Schulz
Last position:
Full-Stack Software Engineer / Consultant for Digitalization at ARTEVENT
Designed, built, and launched an internal event planning web application used by over 100 department leads for a large event, despite having no dedicated testing phase.
Ensured smooth, failure-free operation during first production use, leading to the tool being adopted for future events.
Automated catering calculations and related workflows, significantly reducing email communication and manual computation effort for meal planning.
Managed deployment and hosting on a Linux server using Coolify, including application setup and runtime operations.
Hired and guided a communication designer on UX while independently owning all technical decisions and implementation.
Nikunjkumar Parmar
Last position:
Senior Java Backend Developer at Questax Professionals GmbH
- Provide the Price Listing Service Team Price for all cars and vans in different markets
- Adjust market-specific requirements like taxes, government subsidies, campaigns
- Import, synchronize and store new prices for all new and existing cars in Redis datastore
- Support our product and handle on-call duties
- Daily operations, developing new features, bug fixing
- Pair programming, code reviews, mob programming
- Develop POCs for new ideas
- Maintain and extend the backend
- DevOps tasks
- Perform Kubernetes updates
- Adjust and further develop Kubernetes resources
- Develop and customize Helm charts
- Adjust and update ArgoCD
- Maintain, adjust and further develop CI/CD pipelines
Pawel Ginalski
Last position:
Senior Consultant & Drupal 10 Architect at Stiftung Jüdisches Museum Berlin
- Planning and development of jmberlin.de, the digital platform of the Jewish Museum Berlin, a central place for history, education, and social dialogue
Salar Mohtaj
Last position:
Project management and tutor at LLMs Learning Journey
- Designed and managed an upskilling academy for Deutsche Telekom.
Henning Petersen
Last position:
Backend Systems Development at Deutsche Bank/DWS/Morgenfund
- Developed backend systems for the DWS Investment App, a white-label investment solution (robo-advisor), and an investment solution for institutional clients.
- Java 8-17, Kotlin, Spring Boot, Spring MVC, OpenAPI 3.0, JPA, JDBI, Oracle, Hazelcast, JXLS, Apache POI, Apache PDFBox, Apache Kafka & Avro, Active MQ, Elasticsearch, React Native, Spock Test, IntelliJ IDEA, Kubernetes, Helm, Microservices/Netflix-Stack, TeamCity, Splunk.
- Kanban team, continuous integration.
- Migrated existing applications from Deutsche Bank's private cloud environment to Azure as part of a carve-out.
Michael Wetzl
Last position:
TUI AG / Robinson
- Developed an Internet Booking Engine (IBE) (Saber and Juniper) and other microservices
- Backend development with PHP and Symfony, endpoint and interface implementation
- Unit and integration tests
Discover over 15,000 top freelancers
Statistics of experts using Apache Solr
Aggregated from the professional profiles of matched freelancers.
Experience
25 years (Germany: 21 years)
Position duration
2.2 years (Germany: 1.9 years)
Positions per freelancer
16 (Germany: 15)
Top business areas
Information Technology, Product Development, Business Intelligence
Top industries
Information Technology, Media and Entertainment, Automotive
Certification focus areas
Information Technology, Product Development
Bachelor's degree or higher
100% (Germany: 94%)
Master's degree or higher
40% (Germany: 56%)
Doctorate
20% (Germany: 9%)
Certifications per freelancer
1 (Germany: 2)
Most common languages
German, English, Spanish
Speak two or more languages
100%
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 Berlin 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 Berlin using Apache Solr
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 engine core
Apache Solr is a search and retrieval engine built on Lucene. It is used to power site search, product search, document lookup, and content discovery with faceting, highlighting, and relevance tuning. Strong experts know how to make search results feel fast and useful.
Common work
- Schema design and field mapping
- Query tuning and relevance work
- Facets, filters, and autocomplete
- Indexing pipelines and reindexing flows
- SolrCloud setup and operations
Ecosystem skills
Good Solr specialists also work with Java, Lucene concepts, JSON and HTTP APIs, and search analyzers. They understand tokenizers, synonyms, stemming, stop words, and how these choices change result quality.
When companies hire
Teams bring in freelance help when search feels slow, relevance is weak, or a migration needs careful handling. In Berlin, this often comes up in ecommerce, media, and B2B software, where search quality affects daily work and customer trust.
What strong experts do
They read query patterns, inspect indexes, and test changes against real content. They can explain trade-offs clearly, protect production stability, and improve both precision and recall without making the search stack hard to maintain.
SolrCloud focus
SolrCloud adds distributed indexing, shard management, replication, and failover. Experts who know this layer can support scaling, node recovery, collection design, and operational checks that keep the search service reliable under changing load.
Frequently asked questions
Key details about Apache Solr, drawn from the questions we get asked most.
Apache Solr is used for fast search over content, products, documents, and knowledge bases. Companies hire specialists to build search pages, filters, autocomplete, and relevance rules that help users find the right result quickly. It is common in ecommerce, publishing, support portals, and internal search tools.
Solr and Elasticsearch are both search engines on top of Lucene, but they often fit different teams and operating styles. Solr is frequently chosen for structured search setups, strong faceting, and existing Apache stack familiarity. A good specialist can explain which one fits the data model, scaling needs, and operational setup best.
A strong Apache Solr freelancer usually knows Lucene basics, schema design, analyzers, query parsing, and SolrCloud operations. Useful adjacent skills include Java, JSON, HTTP APIs, Linux, and indexing pipelines. For search work, they should also understand relevance testing and content modeling.
Apache Solr projects can be small, but search changes are easy to get wrong, so experience matters. A simple setup may only need help with schema and query tuning, while a migration or clustered setup needs someone who understands indexing, replication, and production risks. The right level depends on whether the work is tactical or architectural.
Yes, Solr work is often done remotely because the main tasks are schema changes, query tuning, and index troubleshooting. Berlin teams may still want some overlap for workshops, stakeholder reviews, or release planning. German language can help in some organizations, but many technical teams work in English.
If Apache Solr search is slow, irrelevant, or hard to extend, it is time to bring in a specialist. Other warning signs are broken facets, poor synonym handling, index bloat, or unclear query logic. A freelancer can quickly isolate whether the issue is data, schema, analyzers, or cluster setup.
A good Apache Solr expert talks in concrete terms about schemas, query behavior, analyzers, and production safety. Look for examples of search improvements, migration work, or SolrCloud operations, not vague claims. Strong specialists test changes on real content and can explain why a result improves or gets worse.
Solr is still a solid choice when you need mature search features, faceting, and fine control over relevance. It fits teams that want an established Lucene-based stack and clear operational behavior. The best choice depends on your data shape, traffic pattern, and how much control you want over search tuning.
The average hourly rate of freelancers in Berlin, Germany who have used Apache Solr in their recent projects is 91 €, which corresponds to a daily rate of about 729 € based on an 8-hour working day.
Of the freelancers in Berlin, Germany who have used Apache Solr in their recent projects, 100% hold at least a Bachelor's degree, 40% hold at least a Master's degree, and 20% hold a doctorate.
On average, freelancers in Berlin, Germany who have used Apache Solr in their recent projects have 25 years of professional experience, with a single engagement typically lasting around 2.2 years.
The most common languages among freelancers in Berlin, Germany who have used Apache Solr in their recent projects are German (100%), English (100%), and Spanish (14%).
The most common industries among freelancers in Berlin, Germany who have used Apache Solr in their recent projects are Information Technology (100%), Media and Entertainment (86%), and Automotive (57%).
The most common business areas among freelancers in Berlin, Germany who have used Apache Solr in their recent projects are Information Technology (100%), Product Development (100%), and Business Intelligence (43%).
Main locations of FRATCH Experts, who have recently used Apache Solr
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.
Hamburg 
Munich 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
