Spring Boot Experts in Essen
matched in minutes by AIHire experts who create production-ready Java applications, REST APIs and cloud-native services with Spring Boot, Spring Security and Spring Data. FRATCH connects you quickly with vetted, available freelancers who match your technical needs precisely.
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
Nils S.
Last position:
Backend System and Web Client for Replacing Electricity Meters for Energy Suppliers at Freelance
Design and implementation of a system for controlling the complete process of installing, removing, and replacing electricity meters by external service providers for an energy supplier
Automated retrieval of orders and available devices through defined interfaces (e.g. from SAP)
Orchestration of the process steps (assignment of meters, processing of meter data, transfer of updated information back to the source system) through 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
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
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: 56%)
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 29 Oct 2026.
Daily rate distribution
The chart shows how the daily rates of experts in this technology in Essen are distributed, based on recent contracts on our platform. Each bar covers a rate range — its height shows the share of experts charging 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 29 Oct 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 is an open-source framework from the Spring ecosystem for building production-ready Java applications. It reduces configuration work through auto-configuration, embedded servers and sensible defaults. Teams use it for modular backends, REST APIs, event-driven services and business-critical web applications.
Applications and Services
Spring Boot supports systems that must be secure, testable and easy to operate. It fits both new products and the gradual modernisation of established Java applications.
- REST and GraphQL APIs for web and mobile products
- Microservices for distributed business systems
- Integration services for payments, data and external platforms
- Batch processing and scheduled business workflows
Ecosystem and Tooling
Strong specialists work across Spring MVC, Spring WebFlux, Spring Security, Spring Data and Spring Cloud. They connect applications to PostgreSQL, MongoDB, Kafka and message brokers, and use Maven or Gradle for builds. Docker, Kubernetes, Git-based delivery pipelines and observability tools complete the operational picture.
When Companies Need Help
Companies often bring in freelance expertise when a Spring Boot service needs to move into production, scale under changing demand or replace a monolithic application. Specialists can also resolve slow tests, unclear module boundaries, security gaps and unreliable integrations. In Essen, this can support local industrial, logistics and service teams while working remotely or alongside an existing office team.
What Strong Specialists Deliver
A capable professional understands more than annotations and configuration. They design clear domain boundaries, choose suitable persistence patterns and keep API contracts stable. They write focused tests, document decisions and build failure handling into integrations. Experience with profiling, secure authentication, deployment and monitoring is valuable when the service carries real operational responsibility.
Choosing the Right Fit
Look for evidence of shipped Spring Boot systems similar to yours, not only a list of Spring projects. Discuss Java versions, architecture, data access, testing strategy, deployment and ownership of production incidents. A practical assessment should include a small design discussion or code review and clarify collaboration needs, spoken language and availability for remote or on-site work in Essen.
Frequently asked questions
Before you brief your next project: the most common questions about Spring Boot.
Spring Boot is commonly used for Java backends, REST APIs, microservices, integration layers and batch applications. It provides conventions and operational features that help teams move from application code to a deployable service efficiently.
Spring Boot has a broad ecosystem, mature enterprise integrations and a large pool of specialists. Quarkus and Micronaut can offer a smaller runtime footprint or faster startup in some cloud-native scenarios, while the right choice depends on existing skills, libraries, deployment constraints and long-term support needs.
A strong Spring Boot specialist often works with Java, SQL, REST, messaging and automated testing. Experience with Spring Security, Spring Data, Docker, Kubernetes, cloud services and CI/CD is useful when the assignment includes delivery and operation rather than application code alone.
The required depth depends on the system’s risk and scope. A small API may need a specialist who can structure the service and tests, while a distributed or regulated system calls for proven architecture, security, migration and production troubleshooting skills.
Spring Boot projects are often well suited to remote collaboration because code, tests, documentation and delivery pipelines are shared digitally. On-site sessions in Essen can still help with domain discovery, architecture workshops or close coordination with teams handling physical operations.
Ask the Spring Boot specialist to explain dependency choices, transaction boundaries, API versioning, error handling and test coverage. Review how they would secure endpoints, observe a service in production and investigate a failure rather than focusing only on framework terminology.
Spring Boot works well for modular monoliths and microservices. A modular monolith can keep deployment and operations simpler, while separate services may help when teams, scaling needs or release boundaries are genuinely independent.
A Spring Boot professional should communicate technical decisions clearly in the language the team uses for delivery. English is common in distributed teams, while German can be important for workshops, internal documentation and collaboration with business stakeholders in Essen.
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 
Cologne 
Frankfurt 
Stuttgart 
Dusseldorf 
Dortmund 
Nuremberg Request a free demo
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