Hibernate Experts in Stuttgart
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Meet FRATCH Experts in Stuttgart, who have recently used Hibernate
Sercan Tatar
Last position:
Co-Founder & Lead Software Architect at Pflege-Pfad
- Focus: system architecture, cloud-native platforms, microservices, API design
- Product: Pflege-Pfad is a digital matchmaking platform that connects relatives of people in need of care directly with verified care services and caregivers - without an agency and without ongoing fees.
- Business analysis & process design:
- Analysis of the German care market and identification of the key pain points of both target groups.
- Modeling of the core business processes: registration, verification, care request, application, placement, and rating.
- Definition of the business model as a freemium/premium model with optional contact unlocking.
- Creation of user stories and requirements documentation for relatives, care services, and administrators.
- Design of trust and quality assurance mechanisms with document upload, admin review process, and rating system.
- Coordination with stakeholders and validation of product decisions with potential users.
- Technical implementation:
- Design and implementation of the entire platform architecture as a solo developer.
- Design and implementation of a REST API with Spring Boot and Kotlin, including JWT-based authentication.
- Development of the frontend as a single-page application with Angular 17.
- Implementation of the AWS infrastructure with EC2, RDS PostgreSQL, S3, CloudFront, and IAM.
- Document upload with AWS S3 via presigned URLs for verification of care services.
- Email notifications via Resend API.
- AI-supported care service search via OpenAI API.
- Implementation of complete user flows such as registration, login, password reset, and placement process.
- Building an admin panel for user and care service management as well as analytics.
- CI/CD with GitHub Actions and containerized deployments with Docker.
- End-to-end tests with Playwright.
Technologies: Kotlin, Spring Boot 3, Spring Security, JWT, JPA/Hibernate, PostgreSQL, Angular 17, TypeScript, RxJS, AWS (EC2, ECS, S3, CloudFront CDN, RDS PostgreSQL, IAM), nginx, GitHub Actions, Playwright, Maven, Git, OpenAI API, Resend API, Docker, Scrum, i18n (DE/EN/TR), Kiro, feature-flag architecture.
Robin Sadlo
Last position:
Senior Cloud & Backend Engineer at Media-Saturn-Holding GmbH
- Implementing applications with Kotlin and Ktor as microservices
- Using MongoDB in the MongoDB Atlas cloud
- Asynchronous communication of services via Google Pub/Sub
- Using Kotest and MockK for unit tests
- Developing an administration frontend with TypeScript, React and Express.js
- Provisioning environments in GCP using Terraform
- Implementing CI/CD processes with GitHub Actions
- Operating scalable production and test environments in GCP with Kubernetes, Helm and Flux CD
- Monitoring environments with Prometheus and Grafana
- Providing BI data in the Google BigQuery data warehouse
Achille Chimi
Last position:
Backend/Frontend Developer at ITZ-Bund
Development of a microservice application for calculating postings on accounts
Development of backend components with Java or JEE, Quarkus, Kafka, Rest API
Development of the test component with mocking frameworks (Mockito)
Development of integration test components
Creation of OpenAPI specification format
Configuration of CI/CD pipeline
Development of frontend components with React
Design, further development and optimization of system structures
Code review
Java Corretto 21, JEE, Quarkus, Golang
Reactive programming with Spring WebFlux, Project Reactor
Git, Azure DevOps for CI/CD pipeline, YAML, Json Swagger UI, Postman, Rest OpenAPI, Kafka Streams, Kafka Connect, Log4J
Microservices, Jira, Confluence, MySQL, Docker, Kubernetes (deployment via Helm charts)
Spring Security, OAuth 2, JWT, Sonarqube
IntelliJ, Maven, logging framework Splunk, Agile method Scrum, Nexus, Vaadin V24, build tool Vite
React, React.JS, Node.js, Jess/JavaScript, Tailwind CSS, Agile method Scrum, accessibility BITV, Playwright
Benjamin Schaich
Last position:
Design and implementation of a new cloud service at Porsche AG
- Design of a new cloud service
- Requirements Engineering
- API Design (REST API, Kafka)
- Consulting on architecture, feasibility and effort estimation
- Implementation of a microservice architecture
- Implementation of a Spring Boot web service
- Development of REST APIs including business and persistence logic
- Kafka consumers and producers
- Various Excel upload/download scenarios
- Change Data Capture
- Cloud provisioning with IaC/Terraform
- Go-live with 30,000 users
- Operation, support and bug fixing for other services
Environment/tools: GitLab, JIRA, Confluence, IntelliJ, Spring Boot, Java, Docker, Terraform, AWS ECS, Postgres, Apache Kafka, SAP Datasphere, JUnit, Debezium, Apache POI, Hibernate, JPA, Testcontainers
Alexander Zubok
Last position:
Fullstack Developer and DevOps Engineer at Freelancer
- Develop infrastructure and enhance existing infrastructure: Jenkins, GitLab Pipeline, OpenShift, Docker, Helm Chart, Kubernetes, Artifactory, CodePipeline, CodeArtifact, Python
- Document solutions in Jira/Confluence
- Support other colleagues in various technical areas
Ahmed Fikri
Last position:
Senior Lead Engineer (Freelance) at Atruvia AG
- Development of a wealth management application for investing in foreign currencies
- Full-stack development with Angular, Spring Boot, OpenShift, Oracle DB, Kafka
- Design and implementation of a microservice architecture
- Integration into Atruvia's BWS system and connection of multiple interfaces between Atruvia and DZ Privatbank
- Greenfield development of the application from the ground up
- Technical responsibility for architecture and interface design
- Close collaboration with business units and external stakeholders
Colin Weitmann
Last position:
Founder & CTO at Savvi Learning GmbH
- Managing director (CTO/CFO) and founder of Savvi and Sparklyft
- Management of the entire product team incl. development team & content team
- Responsible for product strategy, go-to-market, project management, integration projects, business planning, etc.
Elvir Büyükbayrak
Last position:
Software Architect and Software Developer at Noctica IT GmbH
- NocTime time tracking, workshop planner, meal delivery service app
- LLM-based chat bot to control the NocTime time tracking system via voice input
- New and further development of customer solutions based on the Noctica SAS app framework
- Technologies: Java 17, Spring Boot, JPA, Hibernate, JavaScript, TypeScript, Angular 20, Angular Material, React, C#, Docker, Bash, Git, GitLab, RedMine, SQL, DBeaver, MariaDB, PostgreSQL, Python, TensorFlow, Ollama, various LLMs
Discover over 15,000 top freelancers
Statistics of experts using Hibernate
Aggregated from the professional profiles of matched freelancers.
Experience
14 years (Germany: 20 years)
Position duration
1.8 years (Germany: 2 years)
Positions per freelancer
13
Top business areas
Information Technology, Product Development, Project Management
Top industries
Information Technology, Automotive, Banking and Finance
Certification focus areas
Information Technology, Project Management, Operations
Bachelor's degree or higher
100% (Germany: 94%)
Master's degree or higher
25% (Germany: 51%)
Certifications per freelancer
3
Most common languages
German, English, French
Speak two or more languages
100% (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 Stuttgart 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 Stuttgart 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
What Hibernate does
Hibernate is a Java persistence framework used to map objects to relational databases. It helps teams reduce boilerplate around SQL, transactions, and entity lifecycle handling. Companies use it in business software, internal tools, and backend services that need stable data access.
Common work
- JPA entity and mapping design
- Query work with HQL or Criteria
- Transaction and session handling
- Cache and flush behavior tuning
- Migration from older persistence code
Ecosystem fit
Hibernate often sits behind Spring and Spring Boot in Java applications. It works with JPA annotations, JDBC, Flyway or Liquibase, and databases such as PostgreSQL, Oracle, and MySQL. Strong specialists understand how these parts interact under load and during schema changes.
When experts help
Companies bring in freelance support when persistence code becomes hard to maintain, slow, or inconsistent across services. That is common in legacy modernization, production incident work, and reviews before a major release. In Stuttgart, this often comes up in enterprise software, manufacturing systems, mobility projects, and regulated business applications.
What good specialists do
A strong Hibernate professional reads domain models carefully and keeps mappings simple. They know when to use fetch joins, when to avoid eager loading, and how to spot N+1 issues. They also write clean tests around persistence behavior so changes stay safe.
Collaboration style
Many Hibernate assignments work well remotely because the main tasks are code, schema, and review focused. On-site work can help when teams need quick alignment on data models, release planning, or legacy system constraints. In either setup, clear communication and Java fluency matter more than tool lists.
Frequently asked questions
Questions about Hibernate? Start with the answers below.
Hibernate is used for object-relational mapping in Java applications. It connects domain objects to database tables and handles common persistence tasks such as loading, saving, and updating data. Teams use it to keep data access code consistent and easier to maintain.
Hibernate removes much of the manual SQL and mapping work that comes with plain JDBC. Compared with jOOQ, it is more focused on entity-centric application code and less on writing SQL directly. The right choice depends on whether the project needs model-driven persistence or fine-grained query control.
A strong Hibernate specialist helps when mappings are messy, queries are slow, or transaction handling is unreliable. They are also useful during migrations from older ORM code or when a project mixes legacy tables with modern Java services. If persistence bugs affect production behavior, outside expertise is often the fastest fix.
A good Hibernate expert usually also knows JPA, Spring, SQL, and database design. Experience with testing, schema migration tools like Flyway or Liquibase, and performance debugging is valuable too. In larger systems, knowledge of caching and transaction boundaries matters as well.
A capable Hibernate professional can start with a clear domain model, database schema, and a few key use cases. For deeper work, they also need examples of slow queries, known bugs, and the expected transaction rules. The better the context, the faster they can improve the persistence layer.
Yes, Hibernate work is often well suited to remote delivery because the core tasks are code review, schema analysis, and troubleshooting. If the team is in Stuttgart, remote collaboration works best when the data model and release process are documented. On-site sessions can still help for legacy systems or complex stakeholder alignment.
A strong Hibernate expert keeps mappings simple, avoids unnecessary lazy or eager loading, and explains trade-offs clearly. Look for evidence of safe refactoring, test coverage around persistence behavior, and practical performance fixes. Good specialists do not just make the code work; they make it easier to support.
Common Hibernate issues include N+1 queries, poor fetch planning, broken cascade settings, and confusing transaction scope. Teams also run into problems when entity models are too close to the database schema or when caching is used without a clear strategy. These are all signs that the persistence layer needs expert review.
The average hourly rate of freelancers in Stuttgart, Germany who have used Hibernate in their recent projects is 112 €, which corresponds to a daily rate of about 899 € based on an 8-hour working day.
Of the freelancers in Stuttgart, Germany who have used Hibernate in their recent projects, 100% hold at least a Bachelor's degree and 25% hold at least a Master's degree.
On average, freelancers in Stuttgart, Germany who have used Hibernate in their recent projects have 14 years of professional experience, with a single engagement typically lasting around 1.8 years.
The most common languages among freelancers in Stuttgart, Germany who have used Hibernate in their recent projects are German (100%), English (100%), and French (50%).
The most common industries among freelancers in Stuttgart, Germany who have used Hibernate in their recent projects are Information Technology (100%), Automotive (63%), and Banking and Finance (63%).
The most common business areas among freelancers in Stuttgart, Germany who have used Hibernate in their recent projects are Information Technology (100%), Product Development (100%), and Project Management (63%).
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.
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