Spring Boot Experts in Dortmund
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Meet FRATCH Experts in Dortmund, who have recently used Spring Boot
Yasin Y.
Last position:
Enterprise Architect at Bundesagentur fĂĽr Arbeit
Task:
- Design and build a proof of concept (PoC) for a future-proof virtualization platform, taking secure system architectures into account
- Assess the current state of existing infrastructures and develop selection and evaluation criteria for the right OS virtualization platform
- Carry out the requirements analysis and then create and prioritize tickets in the ticket system
- Complete and continuously update a tool evaluation matrix based on PoC results
- Support team knowledge building through clear documentation of the approach and results in Confluence
- Enterprise analysis of existing hardware (creating different BoMs)
Technologies: Vmware, Vmware Aria Operations, Osism, Canonical OpenStack, FishOs, Linux, Terraform, Ansible, Confluence, Alma
Arkadius S.
Last position:
AWS Pricing Platform / API & Integration Architecture at Porsche Digital
Development and evolutionary further development of a highly available, cloud-native microservice and integration architecture for dealer and retail processes in the Porsche Car Configurator.
Responsibilities
- Development of Java-/Kotlin-based backend, API, and integration components (Spring Boot)
- Integration of internal and external systems via REST/OpenAPI, GraphQL, Apache Kafka, and AWS SQS (synchronous and asynchronous)
- Implementation of stable, high-performance communication and data flows in a cloud-native platform architecture
- Processing of structured data formats (JSON, Protobuf, GraphQL schemas) based on existing API patterns
- Performance optimization of distributed microservices with reduced response times and higher operational stability
- Technical tests (unit, integration, and API tests) as well as error analysis in production-like environments
- AWS Infrastructure as Code with Terraform and AWS CDK
- CI/CD automation (build, test, and deployment pipelines) with GitHub Actions
- AI-supported feature implementation (GitHub Copilot Agent)
Label: Kotlin, Java 25, Spring Boot 4, Protobuf, TypeScript, AWS, Terraform, CDK, Apache Kafka, AWS SQS, REST/OpenAPI, GraphQL, JSON, PostgreSQL, Docker, GitHub Actions, Maven, Gradle, JUnit, Mockito, Testcontainers
Manuel K.
Last position:
.NET Developer, SAP Business One Consultant at Own Projects
- DTO class generator: In-house development of a tool for the automatic generation of classes, functions, and methods for use in .NET Core projects based on SAP Business One Service Layer metadata
- E-invoice import add-on: Development of a SAP Business One add-on / coresuite module for the automated import of ZUGFeRD e-invoices as incoming invoices – with configurable mapping to flexibly control the import logic across four mapping types (DIRECT, SQL, FIXED, EXPR). The add-on is available as a licensed product for SAP Business One customers.
Stack: SAP Business One, SAP Business One Service Layer, coresuite Country Package, C#
Kersten L.
Last position:
Lead Architect / Lead Developer at Bettles: Sports Betting Platform
- Complete greenfield rebuild across the whole stack — built AI-native: backend in Go and NestJS, PostgreSQL (CNPG) on K3s with GitOps/Terraform; frontend on Angular 22, zoneless.
- Orchestrated coding agents (e.g. Claude Code, Cursor) across the entire lifecycle — architecture, implementation, testing, reviews, documentation — driven by Specification-Driven Development (SDD).
- “Bruno” — LLM commentator persona backed by RAG and MCP for a personality that stays consistent across all generations (match previews, post-match reports, his own virtual bets).
Angular 22 (zoneless, without Zone.js), Claude Code, Claude Code Skills, CNPG, Cursor, Design Tokens (Spec for Code), Docker, Gherkin, Git, GitLab, GitOps, Go, Google Gemini, Grafana, Hetzner Cloud, K3s, Keycloak, Kubernetes, Lighthouse, LLM Integration, Model Context Protocol (MCP), NestJS, Node.js, NPM, Playwright, PostgreSQL, Prometheus, RAG, REST, Specification-Driven Development (SDD), Structured Outputs, Terraform, TypeScript, Vitest
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.
Henning P.
Last position:
Siemens
- Developed a reporting API with RESTful services and Spring Boot
- LDAP integration
- Migrated services to AWS
- Bootstrap
- Frontend development with Angular 14
- JBoss
- DynamoDB
- S3
- Athena
Discover over 15,000 top freelancers
Statistics of experts using Spring Boot
Aggregated from the professional profiles of matched freelancers.
Experience
16 years (Germany: 17 years)
Position duration
1.5 years (Germany: 1.9 years)
Positions per freelancer
15 (Germany: 12)
Top business areas
Information Technology, Product Development, Operations
Top industries
Information Technology, Banking and Finance, Education
Bachelor's degree or higher
83% (Germany: 95%)
Master's degree or higher
67% (Germany: 55%)
Certifications per freelancer
0 (Germany: 2)
Most common languages
German, English, Latin
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 Dortmund 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 Dortmund 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 (71%)
- Education (57%)
- Healthcare (57%)
- Manufacturing (57%)
- Government and Administration (57%)
- Automotive (43%)
- Insurance (43%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Spring Boot basics
Spring Boot is the fast path into the Spring ecosystem. It helps experts build production Java services with less setup and clearer defaults. Companies use it for backend systems, internal tools, and APIs that must be stable and easy to maintain.
What it builds
- REST and JSON APIs for web and mobile products
- Microservices that run as small, independent services
- Backend systems for commerce, logistics, and enterprise apps
- Scheduled jobs, integrations, and event-driven services
Ecosystem fit
Strong professionals work with Spring Web, Spring Data, Spring Security, and Spring Actuator. They know how to connect Boot apps to PostgreSQL, MySQL, Kafka, Redis, and cloud services. They also understand how Boot fits into the wider Spring Framework stack.
When to bring in help
Teams bring in Spring Boot specialists when a service needs a clean start, a messy codebase needs structure, or delivery slows down on security, testing, or deployment. In Dortmund, this often matters for firms that build B2B software, industrial software, and connected systems.
What strong specialists do
A good Spring Boot expert writes clear service layers, sensible configuration, and tests that catch real problems. They keep startup time low, avoid fragile wiring, and make observability easy with logs, metrics, and health checks. They also care about upgrade paths and dependency control.
Collaboration
Work can be fully remote or partly on-site in Dortmund, depending on the team and the system. Strong specialists communicate well with product owners, backend peers, and operations teams, and they can work in English or German when the project needs it.
Frequently asked questions
Everything clients usually want to know about Spring Boot, in one place.
Spring Boot is used to build Java backend services with minimal setup. It is common for REST APIs, microservices, internal business systems, and integration layers that need to be reliable and easy to run.
Spring Boot adds opinionated defaults, auto-configuration, and built-in dependency management on top of Spring. That usually means less boilerplate and faster delivery, while the core Spring Framework gives more direct control. Teams choose Boot when they want speed without giving up the Spring ecosystem.
A company should bring in Spring Boot expertise when it needs to start a service quickly, stabilize an existing backend, or prepare a system for production. It is also useful when the team needs help with security, testing, performance tuning, or a difficult upgrade.
A strong Spring Boot specialist usually also knows Java, SQL, REST design, and testing with JUnit or similar tools. Depending on the project, Kafka, Docker, Kubernetes, CI/CD, and cloud basics can matter as well.
Yes, Spring Boot work is often well suited to remote collaboration because most tasks happen in code, tests, and reviews. For teams in Dortmund, a mix of remote and on-site work can help when the project includes workshops, handover sessions, or close work with local stakeholders.
A simple Spring Boot service may need one specialist who can handle setup, APIs, and deployment. Larger systems usually need someone who understands architecture, security, database design, and operational concerns. The right level depends on how critical the service is and how much existing code already exists.
Look for clean code, clear package structure, and practical use of tests, validation, and logging. A strong Spring Boot professional can explain trade-offs, show how they handle configuration and dependency management, and describe how they keep services maintainable over time.
Spring Boot is the application setup and runtime layer, while Spring MVC is one part of the web stack used to handle HTTP requests and responses. Many Boot projects use Spring MVC for web endpoints, but Boot also supports other styles and integrations.
The average hourly rate of freelancers in Dortmund, Germany who have used Spring Boot in their recent projects is 89 €, which corresponds to a daily rate of about 715 € based on an 8-hour working day.
Of the freelancers in Dortmund, Germany who have used Spring Boot in their recent projects, 83% hold at least a Bachelor's degree and 67% hold at least a Master's degree.
On average, freelancers in Dortmund, Germany who have used Spring Boot in their recent projects have 16 years of professional experience, with a single engagement typically lasting around 1.5 years.
The most common languages among freelancers in Dortmund, Germany who have used Spring Boot in their recent projects are German (100%), English (100%), and Latin (14%).
The most common industries among freelancers in Dortmund, Germany who have used Spring Boot in their recent projects are Information Technology (100%), Banking and Finance (71%), and Education (57%).
The most common business areas among freelancers in Dortmund, Germany who have used Spring Boot in their recent projects are Information Technology (100%), Product Development (100%), and Operations (71%).
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.
Berlin 
Hamburg 
Munich 
Cologne 
Frankfurt 
Stuttgart 
Dusseldorf 
Essen 
Nuremberg Request a free demo
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Philipp Thomaschewski
FRATCH CEO
