Jakarta Persistence (JPA) Experts in Switzerland
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Meet FRATCH Experts in Switzerland, who have recently used Jakarta Persistence (JPA)
Osman Tartoussi
Last position:
Senior Developer and Consultant at Federal Office for IT and Telecommunications BIT
IT consulting, analysis, architecture design, new and further development, code review, test automation, continuous integration and continuous delivery in the backend and frontend area.
Technology stack:
JAVA 21
Spring Boot 3
Spring Framework 6
Spring Rest
Spring Data
JPA
Postgres
Aurora Database
Typescript
OWASP
Renovatebot
Sonarqube
Prometheus
Grafana
Spring Security
Single SignOn
Keycloak
Angular 19
NgRx Redux
AWS ECS
AWS Cloudwatch
Terraform
Spacelift
GitOps
Docker
Junit
Maven
Jenkins Pipeline
GitHub
BitBucket
Nexus
Kafka
Conduktor
Kafdrop
OpenApi
Swagger
Scrum
SAFe
Jira
Confluence
Ahmed Rehman
Last position:
AI & Automation Engineer at Teosek GmbH
- Build prototypes, expand AI skills, and practical application in a startup context.
- Transition phase: further training in prompt engineering, APIs, AI, working on independent prototype projects, and collaborating at a friend's startup.
- Technologies: LangChain, REST, Python, Java, JS, TS, Node.
Bojan Antonović
Last position:
Full Stack Developer with Angular at Further Education
- Highest level achieved: Certified Mid-Level Angular Developer
- 13 technologies newly learned or refreshed with (re-)certifications
- Current: Docker, Azure, Quarkus
Christoph Wagner
Last position:
System Architect / System Engineer / Programmer at Deutsche Vermögensberatung (DVAG)
- Create requirements for the modularization of the promotion forecast.
- Set up and expand the various competitions for 2024.
- Customize and test the CICS dialog.
- Create various reports for the department using SQL.
- Implement and test new requirements in batch processes with IWS.
- Update documentation for the new requirements.
- Provide on-call support for daily and monthly production.
- Technologies used: SCRUM, Jira, Confluence, Windows 11, Unix, Enterprise Developer, z/OS, GIT, Mineral, Moped, IWS/TWS, JES, COBOL, CICS, DB2, SQL, Rocket, FortiClient, Citrix.
Ferran Siles Vila
Last position:
Senior Software Engineer at Personal time off / Private projects
- Took on and completed private/organizational projects.
- Continued self-training, e.g., in cloud and reactive architectures.
- Focused deepening of knowledge in areas like Kafka and modern Java 17 enterprise architectures.
Milica Maričić
Last position:
Full-Stack Developer at Holycode
- Contribute to a cross-functional team building a cloud-based bookkeeping platform for SMEs
- Design and implement Java Spring Boot microservices with clear separation of concerns
- Integrate core services via REST and gRPC APIs
- Implement event-driven workflows using RabbitMQ for reliable, decoupled messaging
- Model and manage transactional data in PostgreSQL and leverage Redis for caching
Mateusz Lipczyński
Last position:
Project Lead Developer at PwC
- Took over the analyst and leading developer role in an innovative project helping detection of financial fraud in a major financial institution in Zurich with assistance of artificial intelligence
- Analyzed and implemented new modules, improved performance and user experience, elevated technical documentation and code quality to the standard required by the end client
- Technologies: Java 17, JavaFX, Spring Boot, concurrency, UX, Gradle, Impala
Martin Gall
Last position:
IT Project Manager ALV-eGOV, Deputy Head, Group Leader, Business Analyst, Requirements Engineer at SECO
- Planning, implementation, and rollout of 7 eGov services for companies and job seekers for the Unemployment Insurance Fund (ALV)
Discover over 15,000 top freelancers
Statistics of experts using Jakarta Persistence (JPA)
Aggregated from the professional profiles of matched freelancers.
Experience
25 years
Position duration
1.8 years
Positions per freelancer
15
Top business areas
Information Technology, Product Development, Business Intelligence
Top industries
Information Technology, Government and Administration, Banking and Finance
Certification focus areas
Information Technology, Project Management, Quality Assurance
Bachelor's degree or higher
100%
Master's degree or higher
100%
Certifications per freelancer
5
Most common languages
English, German, French
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 Switzerland 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 Switzerland using Jakarta Persistence (JPA)
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
JPA in practice
Jakarta Persistence, still widely called JPA, defines how Java applications store and load domain data with entities, queries, and relationships. It is a common fit for business systems that need reliable persistence, clean object models, and clear transaction handling.
Where it fits
- CRUD services backed by relational databases
- Order, billing, and workflow systems
- Reporting and administrative back ends
- Migration from older Java EE or Hibernate-based code
Core ecosystem
JPA is used through implementations and tooling such as Hibernate, EclipseLink, and Spring Data JPA. Strong specialists know entity mapping, fetch strategies, JPQL, native queries, validation, and how the persistence layer works with transactions and caching.
What strong experts do
A good specialist keeps the object model consistent with the database schema and avoids slow or fragile queries. They spot issues like lazy loading problems, N+1 queries, and broken cascading early, then shape a persistence layer that is easy to test and maintain.
When companies bring help
Teams usually look for freelance support when a system has performance issues, a large refactor, or a migration from Hibernate or older JPA code. In Switzerland, this often comes up in enterprise software, finance, insurance, and regulated business applications where clean data handling matters.
How collaboration works
- Review entity models and repository design
- Fix query and transaction problems
- Support remote delivery or on-site workshops in Switzerland
- Align persistence rules with the rest of the Java stack
Frequently asked questions
Quick answers to the questions that come up most around Jakarta Persistence (JPA).
Jakarta Persistence (JPA) is used to map Java objects to relational database tables and to manage persistence in enterprise applications. It is a common choice for business software that needs entities, queries, and transaction control without hand-writing every database interaction.
JPA gives you a higher-level model for entities, relationships, and queries, while JDBC keeps you closer to SQL and result-set handling. Teams often choose JPA when they want faster development and a cleaner domain model, and JDBC when they need very fine-grained control over a query path.
JPA is a specification, not a product. Hibernate is the best-known implementation, while EclipseLink is another common one; many teams also use Spring Data JPA on top to reduce boilerplate around repositories.
A strong Jakarta Persistence specialist usually also understands SQL, transaction management, Spring Boot or Jakarta EE, and database indexing. Knowledge of fetch plans, caching, validation, and test setup is important when persistence code has to stay stable under load.
Jakarta Persistence (JPA) work can start simple, but projects with complex joins, inheritance mapping, or legacy data models benefit from deeper experience. If the code base already has performance issues, broken cascades, or many entity relationships, bring in a specialist early.
Yes, JPA work is often a good fit for remote collaboration because most tasks center on code review, query analysis, and database design decisions. If a team in Switzerland prefers workshops or pair sessions, an expert can also work on-site for short, focused blocks.
Look for JPA specialists who can explain entity boundaries, transaction scope, and query trade-offs in plain language. Good signs are clean mappings, few surprise database round-trips, tests around persistence behavior, and the ability to simplify a messy model without changing business rules.
If a JPA layer is slow, hard to test, or full of unclear cascade rules, outside help is usually worth it. Another warning sign is a project where different parts of the code base use entities inconsistently and no one is sure which repository pattern is the standard.
The average hourly rate of freelancers in Switzerland who have used Jakarta Persistence (JPA) in their recent projects is 112 €, which corresponds to a daily rate of about 896 € based on an 8-hour working day.
Of the freelancers in Switzerland who have used Jakarta Persistence (JPA) in their recent projects, 100% hold at least a Bachelor's degree and 100% hold at least a Master's degree.
On average, freelancers in Switzerland who have used Jakarta Persistence (JPA) in their recent projects have 25 years of professional experience, with a single engagement typically lasting around 1.8 years.
The most common languages among freelancers in Switzerland who have used Jakarta Persistence (JPA) in their recent projects are English (100%), German (88%), and French (75%).
The most common industries among freelancers in Switzerland who have used Jakarta Persistence (JPA) in their recent projects are Information Technology (100%), Government and Administration (88%), and Banking and Finance (75%).
The most common business areas among freelancers in Switzerland who have used Jakarta Persistence (JPA) in their recent projects are Information Technology (100%), Product Development (88%), and Business Intelligence (63%).
Main locations of FRATCH Experts, who have recently used Jakarta Persistence (JPA)
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.
Countries:
Zurich Geneva Basel Bern Request a free demo
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Philipp Thomaschewski
FRATCH CEO
