Spring Boot Experts in Essen
matched in minutes by AIHire experts who create production-ready Java services, REST APIs and event-driven systems with Spring Boot, Spring Cloud and modern delivery practices. FRATCH connects you with vetted, available freelancers through fast, precise AI matching.
Meet FRATCH Experts in Essen, who have recently used Spring Boot
Boris S.
Last position:
Generalist expert for software development at Mercor
- Training AI models, evaluating images and text UI/UX, turning the provided data into insights through OpenAI Feather as part of the machine learning workflow
Technologies: OpenAI Feather
Anupriya P.
Last position:
Senior Software Engineer at Telefonica Germany
(Maternity/Parental Leave: July 2023 – Aug 2024)
- Domain: Payment Domain | Client: Telefonica Germany
- Project: General Payment Service
The General Payment Service is responsible for processing of online payments via external payment service provider like Safer pay and PayPal
- Developed Design of Use (DOU) and interface contract documentation, ensuring clarity and compliance across system integrations
- Designed and delivered REST/SOAP web services with Spring Boot and Spring Data JPA, publishing Swagger contracts through WSO2 API Gateway to improve accessibility and governance.
- Spearheaded the on-premises to AWS Cloud migration, re-platforming from Oracle to PostgreSQL on AWS RDS and deploying services on EC2, improving scalability and cost efficiency.
- Containerized microservices using Docker and orchestrated deployments with Kubernetes, streamlining deployment pipelines and improving system reliability.
- Implemented proactive monitoring and logging via AWS CloudWatch and Kibana, ensuring stability and performance during cutover.
- Enhanced collaboration through code reviews and peer reviews, promoting maintainability and clean coding standards.
- Strengthened quality by writing comprehensive JUnit tests and preparing detailed test cases enabling early defect detection
- Delivered automated API testing with Ready API, Postman, and SOAPUI, and conducted performance testing with JMeter, ensuring reliability in high-transaction environments.
Celil U.
Last position:
ZÃœRS Geo 2021 at adesso SE
- Frontend development
- Spring Boot
- Swagger
- Git
- GitLab
- SonarQube
- Docker
- Maven
- Java
- Angular
Björn W.
Last position:
Software Audit and Architecture Consulting: Portal Software
- I carried out a software audit and architecture consulting for an existing portal software for infrastructure provisioning for a company that offers virtual reality environments.
- Role: Mentoring and consulting
- Technologies used: Java
Adem S.
Last position:
IT Consultant (Test Manager) & CEO at Trikolon Consulting GmbH
- Development and implementation of test concepts for complex, multi-layered systems
- Creation of regular management reports and presentations for stakeholders and clients
- Technical and disciplinary leadership of international test teams (coordination, coaching, resource planning)
- Responsibility for quality assurance across multiple test levels (unit, integration, system, and acceptance tests)
- Design of test cases and test plans in Azure DevOps; ensuring traceability and coverage
- Use of BDD approaches (Gherkin/Cucumber) to prepare test automation
- Building a test automation architecture with Playwright and integrating new tests into CI/CD pipelines
- Performing API tests (REST) and tests for mobile/PWA applications
- Setup and maintenance of test environments across multiple stages (integration, QA, UAT, pre-production)
- Test data management (synthetic and production-like data), ensuring consistency and reproducibility
- Collaboration with DevOps teams for containerization (Docker/OpenShift) and CI/CD integration
- Working under SAFe & Scrum, closely coordinating with product owners and DevOps teams
- Active participation in PI plannings, sprint reviews, and retrospectives
- Promoting an agile QA culture through coaching and knowledge sharing
- Introducing scalable test automation with Playwright → significant reduction of manual testing efforts
- Increasing test transparency through clean defect and reporting management in Azure DevOps
- Improved release quality through an end-to-end QA strategy and automated regression tests
- Strategic leadership of Trikolon Consulting GmbH and responsibility for finance, personnel, and business development
Dmitrii S.
Last position:
Senior Developer/Team Lead at Devexperts
Project Livebash (2021-12-01–2023-12-31)
Development and design of the core system
Code reviews
Developer management
CI/CD
Client communication
Leading epics
Speaking at conferences
Managing the production system
Interviewing project developers
Outcome: production system
Technologies and tools: Java 11, Java 17, Kotlin, Spring Boot, TeamCity, Gradle, AWS DynamoDB, JUnit, Mockito, Docker, Docker Compose, AWS SQS, AWS EC2, AWS S3, AWS MediaLive, Ethereum, Postman
Project Robinhood (2024-01-01–2024-05-31)
Customization and development of product features for specific clients
Interviews with project developers
Technologies and tools: Java 17, Java RX, Kotlin, Spring Boot, TeamCity, Gradle, JUnit, Mockito, Docker, Docker Compose, PostgreSQL
Projects Sway, Tickmill, Pepperstone, UCapital (2024-06-01–present)
Customization and development of product features for specific clients
Bug fixes
Porting tickets from the product
Feature development
Technologies and tools: Java 17, Java RX, Kotlin, Spring Boot, TeamCity, Gradle, JUnit, Mockito, Docker, Docker Compose, PostgreSQL
Nils S.
Last position:
Backend system and web client for exchanging electricity meters for utility providers at Freelance
Design and implementation of a system to control the entire process for new, removal, and exchange operations of electricity meters by external service providers for a utility company
Automated retrieval of orders and available devices via defined interfaces (e.g. from SAP)
Orchestration of process steps (assigning meters, processing meter data, sending updated information back to the source system) using a Spring Boot backend
Provision of a React-based web client for operational tracking and control of orders, e.g. to continue failed process steps or resend notifications
Hamza S.
Last position:
Software Developer at WaslSign
- Designed and implemented the system architecture for scalable document workflows, improving stability and performance.
- Optimized the login flow with TOTP-based MFA, reducing complexity and login time by 35%.
- Built secure backend APIs for document upload, signing, and management.
- Developed encrypted file handling with AWS S3 pre-signed URLs, ensuring GDPR-compliant data protection.
- Implemented JWT-based role authentication, strengthening access control and overall platform security and reducing code and database complexity.
- Optimized database queries and caching using ORM, reducing API response time by 40%.
- Integrated real-time webhook updates, enhancing workflow transparency and user experience.
Jan-Niklas F.
Last position:
Founder at Freundt Consulting GmbH
- Porsche AG (2018 – 12/2019): Design and development of native iOS apps in motorsport/Formula E (e.g. travel app and enterprise warehouse management with SAP integration) and e-mobility (Porsche Taycan; development of a native Microsoft Excel data export).
- StarFinanz / Sparkasse (05/2019 – 07/2021): Worked on the banking app (FinTS, HBCI, PSD2, Apple Pay); implemented Apple Pay; implemented a new TAN method; worked with the FinTS backend (PSD2); opened bank accounts via app (eID, VideoID, Authada); designed a new, modern banking experience.
- eBay Classifieds and Adevinta (07/2021 – 06/2023): Packaging & Pricing (premium features for business customers): e.g. markdown; company page; advertising options; multi-tenant design system based on SwiftUI and UIKit.
- Maschinensucher (07/2023 – 12/2023): Fullstack mobile (Android, iOS) and backend (PHP, Yii, Elastic Search) development; implemented search agent push notifications, InstantSearch, and modernized the design.
- Bankverlag (02/2024 - Present): Consulting and fullstack development of white-label apps (iOS / Android / Java Spring Boot) for private banks.
Discover over 15,000 top freelancers
Statistics of experts using Spring Boot
Aggregated from the professional profiles of matched freelancers.
Experience
14 years (Germany: 17 years)
Position duration
1.8 years (Germany: 1.9 years)
Positions per freelancer
10 (Germany: 12)
Top business areas
Information Technology, Product Development, Project Management
Top industries
Information Technology, Banking and Finance, Manufacturing
Certification focus areas
Project Management, Information Technology, Quality Assurance
Bachelor's degree or higher
100% (Germany: 95%)
Master's degree or higher
57% (Germany: 55%)
Certifications per freelancer
1 (Germany: 2)
Most common languages
German, English, Spanish
Speak two or more languages
100% (Germany: 96%)
Based on our profile pool as of 19 Sep 2026.
Daily rate distribution
The chart shows how the daily rates of freelancers in this technology in Essen 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 Essen using Spring Boot
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 19 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
Spring Boot 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 (78%)
- Manufacturing (44%)
- Automotive (33%)
- Construction (33%)
- Education (33%)
- Healthcare (33%)
- Insurance (33%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What Spring Boot does
Spring Boot simplifies the creation of stand-alone, production-ready Java applications. It provides sensible defaults, embedded servers and automatic configuration, so teams can focus on business logic instead of repetitive setup. It is widely used for web services, internal applications and distributed backends.
Where it fits
Spring Boot supports systems that need clear structure, secure access and reliable integration with other services. Common deliverables include:
- REST and GraphQL APIs
- Microservices and modular monoliths
- Payment, order and customer platforms
- Batch processing and integration services
It runs across industries such as manufacturing, logistics, finance, retail and healthcare, including companies in the Essen and wider Ruhr region.
Ecosystem and tooling
Strong Spring Boot work often includes Spring MVC or WebFlux, Spring Data, Spring Security and Spring Cloud. Specialists may also use Hibernate, JPA, Kafka, RabbitMQ, PostgreSQL, Docker and Kubernetes. Maven or Gradle, JUnit, Testcontainers and observability tools support repeatable delivery and operations.
When expertise matters
Companies bring in freelance expertise when a Java service needs a clear technical direction, a legacy system needs modernization or a growing team needs delivery capacity. External specialists can establish API boundaries, improve test coverage, prepare cloud deployment and resolve performance or integration issues. Essen-based teams can combine local workshops with remote implementation.
What strong specialists deliver
Look for professionals who explain trade-offs clearly and connect Spring Boot choices to business and operational needs. They should design maintainable modules, handle configuration safely and build useful automated tests. Experience with database transactions, messaging, authentication, CI/CD and monitoring is valuable when the service must run reliably beyond development.
How to assess a fit
Review comparable Spring Boot systems rather than technology lists alone. Ask how the expert would structure an API, manage failures, secure service-to-service calls and investigate a slow request. A good specialist can discuss migration risks, documentation and handover in clear language, whether collaboration is on-site in Essen, remote or hybrid.
Frequently asked questions
Before you brief your next project: the most common questions about Spring Boot.
Spring Boot is used to build Java web applications, REST APIs, microservices, batch jobs and integration services. It is a strong fit for backend systems that need a consistent structure, security controls, database access and production operations.
Spring Boot has a broad ecosystem and mature integrations, which can reduce delivery risk for complex business systems. Quarkus and Micronaut can offer faster startup and lower memory use in some workloads, so the right choice depends on deployment constraints, team knowledge and existing Java components.
A strong Spring Boot expert commonly works with Java, SQL, JPA or Hibernate, REST design, Spring Security and automated testing. Experience with Kafka or RabbitMQ, Docker, Kubernetes, cloud services, CI/CD and monitoring is useful for distributed production systems.
The required level depends on the system’s risk and scope. A straightforward API may need focused Spring Boot delivery, while a regulated platform or service migration calls for an expert who can handle architecture, security, data consistency, resilience and technical coordination.
Yes. Spring Boot work is well suited to remote or hybrid collaboration because source code, tests, pipelines and environments are shared digitally. For teams in Essen, occasional on-site workshops can help with domain discovery, architecture decisions and handover, while daily implementation remains remote.
Ask for examples of systems similar to yours and discuss the reasoning behind their design. A capable Spring Boot expert should explain API boundaries, error handling, transaction choices, security, testing, observability and deployment without relying on vague technology lists.
Spring Boot supports both approaches. It can provide a clean foundation for a modular monolith, while Spring Cloud and related tools can support independently deployed services when operational and organizational needs justify the added complexity.
A Spring Boot freelancer should clarify the Java version, build system, persistence layer, deployment model, delivery pipeline and ownership of existing services. It is also important to understand domain rules, collaboration language and whether the engagement includes implementation, technical leadership, documentation or knowledge transfer.
The average hourly rate of freelancers in Essen, Germany who have used Spring Boot in their recent projects is 84 €, which corresponds to a daily rate of about 673 € based on an 8-hour working day.
Of the freelancers in Essen, Germany who have used Spring Boot in their recent projects, 100% hold at least a Bachelor's degree and 57% hold at least a Master's degree.
On average, freelancers in Essen, Germany who have used Spring Boot 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 Essen, Germany who have used Spring Boot in their recent projects are German (100%), English (100%), and Spanish (22%).
The most common industries among freelancers in Essen, Germany who have used Spring Boot in their recent projects are Information Technology (100%), Banking and Finance (78%), and Manufacturing (44%).
The most common business areas among freelancers in Essen, Germany who have used Spring Boot in their recent projects are Information Technology (100%), Product Development (100%), and Project Management (67%).
Main locations of FRATCH Experts, who have recently used Spring Boot
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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Hamburg 
Munich 
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Frankfurt 
Stuttgart 
Dusseldorf 
Dortmund 
Nuremberg Request a free demo
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FRATCH CEO
