Hibernate Experts in Berlin
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Meet FRATCH Experts in Berlin, who have recently used Hibernate
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.
Benjamin Faas
Last position:
Freelance Product Manager, Product Owner, Scrum Master & Agile Coach at Freelance
Freelance product owner, scrum master and agile coach in various projects spanning from local agencies to multinational corporations in diverse industries.
Last projects:
Adevinta: Technical Project Manager responsible for coordination of several sub-workstreams building the world’s largest classifieds multi-tenant platform.
Aroundhome (a ProSiebenSat.1 company): Product Manager implementing and verifying on the business side a concept for digital qualification of user requests for matching service providers.
Peek & Cloppenburg Düsseldorf: Product Manager Mobile advising on and guiding the rebuild of Android and iOS apps.
Visual Meta GmbH (an Axel Springer company), Berlin: Director Product co-leading the Product & Engineering department together with the Director Engineering.
Responsibilities at Visual Meta GmbH:
Define and deliver a 3–5 year horizon product strategy including a product vision & mission connecting to existing company strategy and strategies from adjacent departments.
Refine an existing OKR process together with OKR master and directors of other departments to increase focus and outcome.
Support the Director Engineering in creating a platform transformation strategy to transform a monolithic on-premise tech stack into a service-oriented, cloud-based architecture and establish a domain-based organizational setup.
Accountability for a motivated and talented team of 5 head-level colleagues and 17 operational team members from product management, data and UX/UI design.
Key achievements at Visual Meta GmbH:
Defined and delivered a 3–5 year horizon product strategy including a product vision & mission.
Increased focus within OKR process by moving from 10 company-level objectives to 2 and from several hundred team-level key results to a few dozen.
Created a career path framework for the product team defining roles and responsibilities from junior to head level positions.
Santhosh Kannan
Last position:
Freelance Software Engineer at Zalando SE
- Support Authorization as a Service initiative for enterprise-scale authorization platform
- Incorporate comprehensive observability solutions into authorization infrastructure
- Provision and manage AWS infrastructure for authorization services
- Mentor development team on AWS and Kubernetes best practices
- Tech Stack: Java/Kotlin, Golang, Python, OPA, Spring Boot, AWS, Kubernetes, Terraform, ELK Stack, Prometheus, Grafana
Maciej Rosiek
Last position:
Full Stack Developer (Freelancer) at Runbuggy
- Led development of RunBot AI assistant autonomously using LLM-powered workflow automation (React, TypeScript, Java, MongoDB, NATS)
- Architected TMS platform providing unified transportation management and real-time logistics visibility with AI processing pipelines
- Designed event-driven microservices architecture supporting marketplace
- Drove architectural decisions and technical leadership across full-stack platform development
Imran Ali
Last position:
Software Engineer II at LivePerson Germany GmbH
- Led development of 15+ microservices (Java 17, Spring Boot) driving customer interactions; migrated from on-prem to GCP Kubernetes, improving scalability and reducing infra cost by 20%.
- Optimized user services with CouchDB caching and API refactoring, cutting response times by 35% and enhancing customer experience.
- Implemented canary deployments, FluxCD GitOps, and CI/CD optimizations in GitLab, reducing release lead time by 25% and enabling zero-downtime rollouts.
- Set up Grafana health checks and Anodot alerts for latency, error, and throughput monitoring, reducing MTTR by 40%.
- Built secure APIs using OAuth2, DPoP, and Gatekeeper, integrated REST and GraphQL, and achieved 90%+ test coverage with unit and E2E tests.
- Mentored junior developers, promoted Agile best practices, and collaborated cross-functionally to deliver high-impact, reliable customer-facing features.
Abhiroop Basu
Last position:
Software Engineer III at Foundry Digital
- Developed and deployed microservices in Kotlin and Spring Boot, integrated AWS Secrets Manager to secure credentials and decreased network calls using Spring cache.
- Refactored Kafka consumer using Spring Kafka with semaphore-based backpressure to cap records and keep heap memory stable under spikes; switched to batch upserts to cut down on database invocations; added Testcontainers integration tests for Kafka and database to pave the way for future changes.
- Automated the financial reconciliation workflow in Spring Boot (Kotlin) using Spring Scheduler, transactional boundaries, JPA/Hibernate on MySQL, and Flyway migrations, saving the accounts team 16+ hours per week.
- Designed and dockerized payments end-to-end test framework in Robot (Python) with reusable keyword libraries and profiles; integrated with GitLab CI (JaCoCo XML and HTML reports) to accelerate releases and lift code coverage to 80%.
- Implemented end-to-end observability on Datadog by instrumenting services with Datadog APM, correlating metrics and logs, provisioning dashboards, and creating monitors with burn-rate alerts and anomalies to harden reliability and give stakeholders clear visibility.
Mario Jelinski
Last position:
Architect / Developer at handyhase
- Overhaul of the entire design and implementation of new UI/UX aspects using React
- Planning of the software architecture and structuring of the project for long-term scalability using Git for version control
Igor Kazarnovskiy
Last position:
Freelance Software Developer
Jorge Pérez Suárez
Last position:
Software Engineer – AWS and Kubernetes Specialist at Citti
- Creation, maintenance and hardening of Kubernetes clusters employing Ansible and ArgoCD
- Keywords: Ansible, AWX, Kubernetes, NetApp, Prometheus, CI/CD ArgoCD, SSO, Fluent-bit, HAProxy, Calico, Keycloak, oauth2-proxy, SealedSecrets, kubeseal, Aqua kube-bench, CIS-Benchmarks, Aqua Trivy operator
Olaf Nouvortne
Last position:
Frontend Engineer at Danaher/Hach Lange GmbH
- Developed a SolidJS frontend UI for a spectrometric water analysis system on an ARM-based embedded Linux platform
- Prototyped UI in TypeScript React/Nx with LitElements and MQTT integration
- Built production UI using SolidJS, SUID, i18next, Ajv, MQTT.js, C3.js
- Refined requirements with UX team and water analysis system engineers
- Defined and documented system architecture, MQTT message formats, frontend architecture, and development setup
- Set up frontend system from scratch, implemented domain-oriented type system, UI components, and application state
- Managed MQTT pub/sub services and schema-based message validation in frontend
- Coached two junior frontend developers
- Worked in an agile remote team using JIRA, Git, and Bitbucket
Anusha Ramanan
Last position:
Full-time parenting (Career Break) at Full-time parenting (Career Break)
Neil Parsonage
Last position:
Software Engineer at AKDB
- Maintenance, enhancement, modernization, and testing of the OK.VERKEHR specialized application, a monolithic Enterprise Java solution (approx. 3.5 million LOC) for vehicle registration and driving license authorities
- Design, development, testing and maintenance of end-to-end workflows (dialogs, backend services and persistence layer, test suite) for new driver's license applications, modifications/extensions of licenses, management of parking permits and truck driver cards
- Development and maintenance of web services for communication between local road traffic authorities and the Federal Motor Transport Authority (Kraftfahrt-Bundesamt), FAER register, TÃœV inspection centers and driving schools
- Performance optimization and targeted refactoring for the future migration to a cloud architecture and addition of a new web client (Vaadin)
- 3rd-level support for customers in production
Ramu Molankula
Last position:
Software Development Engineer at Olive Crypto Systems Pvt Ltd (National Payments Corporation of India)
Contributed to the development of a UPI simulation system, ensuring alignment with NPCI standards from UAT to production, and achieving a 98% success rate with improved API workflow clarity.
Built a data-driven certification process that increased scenario coverage by 40% and cut certification time to 1 week.
Executed 100+ transaction scenarios for switch testing using a real-time sample bank, achieving 85% accuracy in critical flows and supporting on-time certification for banks.
integrated Spring Boot microservices with RabbitMQ to automate certification workflows, reducing manual efforts by 40%.
Supported the rollout of a global UPI simulation tool used by 20+ international partners to explore real-time remittance APIs and process flows efficiently.
Streamlined certification workflows, reducing integration time by 50% and enabling full API understanding within a week.
Engineered a real-time international remittance simulator and testing framework facilitating API/application flow comprehension for partners like Lyra and TerraPay; cut partner integration time by 40%.
Developed RESTful APIs using Spring Boot and Kafka to simulate high-volume remittance traffic for partner certification.
Collaborated with international partners to optimize API performance, identifying and resolving latency issues, resulting in a 25% reduction in response times during partner integrations.
Tejasvi Yogeshappa
Last position:
Backend Engineer at N26
- Developed and maintained Kotlin-based microservices with Kafka event streaming, applying Hexagonal Architecture and Domain-Driven Design in production environments.
- Contributed to the Bring-Your-Salary feature, enabling seamless onboarding of new salary accounts and improving customer experience.
- Built and integrated services for the FPAD VOP platform, supporting secure and scalable partner integrations.
- Investigated and resolved production incidents through root cause analysis (RCA), implementing fixes that improved service stability and reliability.
Botirjon Ruzmetov
Last position:
Security Operations Specialist at Expert Systems AG
- Programming with TypeScript, JavaScript, PHP and other technologies
- Monitoring, programming, and fixing crawlers for the ProvenExpert and ProvenEmployer websites to collect all reviews and ratings for clients
- Testing all programs required for the correct functioning of the ProvenExpert and ProvenEmployer websites
- Designing and implementing data storage in databases using MongoDB and creating backups as needed
- Maintaining all computers (installing necessary software, connecting to all databases, registering and repairing) and other equipment
Discover over 15,000 top freelancers
Statistics of experts using Hibernate
Aggregated from the professional profiles of matched freelancers.
Experience
20 years
Position duration
2.9 years (Germany: 2 years)
Positions per freelancer
9 (Germany: 13)
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Banking and Finance, Media and Entertainment
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
100% (Germany: 94%)
Master's degree or higher
43% (Germany: 51%)
Doctorate
7% (Germany: 8%)
Certifications per freelancer
1 (Germany: 3)
Most common languages
English, German, Spanish
Speak two or more languages
80% (Germany: 95%)
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 Hibernate
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
Hibernate basics
Hibernate is a Java ORM framework used to map objects to relational databases. It is often chosen for business systems that need clean persistence code, transaction handling, and long-lived data models. Teams also use Hibernate ORM inside Spring and Jakarta EE applications.
What specialists deliver
- Entity mapping and associations
- Lazy loading and fetching strategy design
- Query work with HQL, JPQL, and Criteria
- Transaction and session handling
- Performance fixes for N+1 and slow joins
Ecosystem fit
Strong specialists know how Hibernate fits with JPA, Spring, JDBC, and database tools. They work with annotations, XML where needed, and migration tasks across schema changes. Good work also includes understanding how caching, dialects, and connection management affect runtime behavior.
When to bring in help
Bring in freelance expertise when mappings are fragile, queries are slow, or a legacy codebase needs cleanup. Companies in Berlin often need support for product platforms, internal business software, and data-heavy services that must stay stable while features keep shipping. Remote work is common, but on-site sessions help with design reviews and deep debugging.
What good work looks like
A strong professional keeps persistence code predictable and easy to test. They avoid overfetching, reduce duplication between object model and schema, and make database access clear for the rest of the team. They should also explain tradeoffs between convenience, readability, and performance.
Common project signs
- Repeated lazy loading errors or session problems
- Queries that are hard to read or maintain
- Legacy Hibernate code that blocks changes
- Need for a clean JPA migration path
- Data access that slows down releases
Frequently asked questions
Not sure where to start with Hibernate? These answers cover the essentials.
Hibernate is used to map Java objects to relational database tables and manage persistence logic. It is common in enterprise systems, internal business apps, and services that need transactions, queries, and entity relationships handled in a consistent way.
Hibernate reduces boilerplate compared with plain JDBC and gives you object mapping, caching options, and higher-level querying. JDBC can still be useful for very specific SQL work, but Hibernate is usually better when the application has many entities and business rules around them.
Hibernate is not the same as JPA, but it is one of the best-known JPA implementations. Teams often use JPA APIs for portability while relying on Hibernate ORM underneath for the actual persistence behavior and additional features.
A strong Hibernate specialist should also know SQL, database design, Spring, transaction management, and query tuning. Familiarity with caching, testing, and schema migration tools helps them deliver cleaner persistence layers and fewer production issues.
A Hibernate project needs more than basic annotation knowledge when it includes legacy mappings, performance tuning, or a tricky migration. Simple CRUD work can be handled quickly, but complex domains benefit from someone who has seen session, fetch, and transaction edge cases before.
Bring in a Hibernate expert when your team is blocked by slow queries, broken mappings, or a hard-to-maintain data access layer. Freelance help is also useful during refactors, Spring upgrades, and migrations from older ORM code to cleaner JPA-based designs.
Yes, Hibernate work is often well suited to remote collaboration because most tasks involve code, schema changes, and issue analysis. In Berlin, hybrid or on-site sessions can still help when a team wants direct workshops for legacy debugging or architecture decisions.
A strong Hibernate professional writes mappings that match the domain, keeps queries understandable, and avoids hidden performance traps. Look for clear explanations of fetch strategy, transaction boundaries, and how they would diagnose lazy loading errors or slow database calls.
The average hourly rate of freelancers in Berlin, Germany who have used Hibernate in their recent projects is 81 €, which corresponds to a daily rate of about 649 € based on an 8-hour working day.
Of the freelancers in Berlin, Germany who have used Hibernate in their recent projects, 100% hold at least a Bachelor's degree, 43% hold at least a Master's degree, and 7% hold a doctorate.
On average, freelancers in Berlin, Germany who have used Hibernate in their recent projects have 20 years of professional experience, with a single engagement typically lasting around 2.9 years.
The most common languages among freelancers in Berlin, Germany who have used Hibernate in their recent projects are English (90%), German (85%), and Spanish (10%).
The most common industries among freelancers in Berlin, Germany who have used Hibernate in their recent projects are Information Technology (100%), Banking and Finance (55%), and Media and Entertainment (35%).
The most common business areas among freelancers in Berlin, Germany who have used Hibernate in their recent projects are Information Technology (100%), Product Development (95%), and Quality Assurance (60%).
Main locations of FRATCH Experts, who have recently used Hibernate
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 
Cologne 
Frankfurt 
Stuttgart 
Dusseldorf Request a free demo
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FRATCH CEO
