Java Experts in Stuttgart
matched in minutes from over 15,000 CVsHire experts who deliver Spring Boot services, enterprise applications and scalable APIs with Java, supported by the JVM ecosystem and modern cloud tooling. FRATCH connects you with vetted, available freelancers through fast, precise AI matching.
Meet FRATCH Experts in Stuttgart, who have recently used Java
Sercan T.
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 placement platform that directly connects relatives of people in need of care 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 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 the sole 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 using presigned URLs to verify 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 the placement process.
- Development of 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.
Carlos M.
Last position:
Implementation in Pimcore/Shopware
- Consulting, design, analysis, software architecture and development
- Design, development and implementation of a Pimcore environment and connection of several external API systems in a Kubernetes environment, as well as various PIM and ERP systems
- Technologies: Unix environment, design, Symfony development, design, PHP 8+, software architecture, MySQL/SQL, Shell Script, Git Dev Ops tasks, AI coding assistance, Pimcore 12, Shopware 6
- Team size: >10 people
Will O.
Last position:
Solution Architect at Polizei Behörde Stuttgart
Designed a migration strategy for WLS applications to BKA Cloud and Stack IT
Created a hybrid cloud for internal testing and development with Kubernetes
Transformed the IT landscape from an outdated monolithic architecture to a cloud-based architecture
Integrated new CI/CD processes using Azure Pipelines
Quadrupled the processing throughput for personnel security checks
Migrated personnel security screening applications to Docker-based applications
Implemented CI/deployment pipelines using Azure DevOps
Environment: Java Springboot, Kubernetes, Oracle Weblogic, OpenID, Camunda, JUnit, TOGAF
Matthias S.
Last position:
Software Developer and Consultant at CLADE GmbH
- Analysis of the existing CAN communication between microcontrollers
- Analysis of the sensors used and the measured values collected
- Planning the CAN messages for transmitting the measured values
- Iterative adjustment of the microcontroller code to the new CAN messages
- Cross-compilation from x64 to arm64
Ronald F.
Last position:
Senior IT Consultant – Requirement Engineer at Deutsche Bank - Strivion
Methodology: Agile project management
Goal: Digitization and implementation of CCD2 requirements within the Consumer Finance systems.
Analysis, identification, and assessment of business requirements, as well as their transfer into technical implementation requirements. Coordination and status reporting of the various requirements. Documentation and process management using UML and BMPN. Cross-functional stakeholder management, UAT testing, data management, API architecture management.
Tools: Jira, Confluence, Visual Code, Sql Developer, Enterprise Architect, MsOffice, Bruno, ALM, Camunda, Figma
Salim C.
Last position:
Cloud / Systems Architect
- Development and introduction of operations processes
- Preparation of complete documentation packages (including incident management and operations support) to meet compliance requirements
- Introduction of a workshop on IaC (Infrastructure as Code)
- Technical consulting for the project security concept (ISMS)
- Installation and operation of Kubernetes clusters on AWS, on-prem, and Azure
- Hybrid cloud architecture design (on-prem, Hetzner, AWS)
- Analysis and troubleshooting of incidents and system outages
- Network adjustments for firewall rules, gateways, OpenVPN settings, and IPsec tunnels (pfSense)
- Technical consulting on Bitbucket, Jenkins, and GitLab CI/CD pipelines
- Consulting on Ansible deployments and infrastructure automation
- Consulting on building a scalable system in the cloud (AWS / Azure)
- Technologies / Tools: Ansible, Terraform, AWS, Azure, VPN, pfSense, Jenkins, Bitbucket, Kubernetes, GitLab Runner, ISMS, Golang, Prometheus, Grafana, S3, Lambda, RDS, ECS, Cognito, OIDC, Harbor, MinIO, Postgres, Redis, Keycloak, Ceph, Proxmox, CloudFormation, PostgreSQL, Flux CD, Hetzner, IONOS, Sonatype Nexus Repository, Entra ID, Dex IdP, Pulumi
Artyom N.
Last position:
AI Automation Engineer & Solution Architect at Technology Research Project
Designed and developed an AI-powered automation platform using n8n to analyze social media niches, identify target audiences, and automate marketing strategy generation. The solution combined AI agents, workflow orchestration, and data analysis to automate research processes and generate data-driven insights.
- Designed and implemented complex automation workflows using n8n
- Developed AI-powered analysis agents for market and audience research
- Integrated multiple APIs and AI services into automated workflows
- Built automated market, competitor, and target audience analysis pipelines
- Leveraged Large Language Models (LLMs) for information summarization, classification, and prioritization
- Containerized and deployed the platform using Docker
Technologies: n8n, AI Agents, OpenAI APIs, Prompt Engineering, LLMs, Docker, Linux, REST APIs, Webhooks
Alexander Z.
Last position:
Fullstack Developer and DevOps Engineer at Freelancer
- Developing the infrastructure and improving existing infrastructure: Jenkins, Gitlab Pipeline, OpenShift, Docker, Helm Chart, Kubernetes, Artifactory, CodePipeline, CodeArtifact, Python
- Documenting solutions in Jira/Confluence
- Supporting other colleagues in different technical areas
Mustafa Ö.
Last position:
Data & Business Analyst at Self-Employed / Freelancer
External consultant for various projects in the automotive industry.
Data-driven business and performance analysis
Analysis, interpretation and validation of complex business data
Identification of trends, risks and potential areas for improvement
Translation of analytical findings into actionable business recommendations
Preparation and presentation of results for business stakeholders
Emmanuel L.
Last position:
Founder and sole developer
- Development of a SaaS platform for esports teams with roles, planning, statistics and billing
- Design and implementation of the architecture, external API integrations and operations
- Stack: Laravel 13, React 19, TypeScript, PostgreSQL, Redis and Stripe
German R.
Last position:
Freelance Technical Product Owner & AI Product Builder at Neckarshore AI / Freelance
Two complementary tracks: (a) building my own AI products and open-source tools under the Neckarshore AI brand, with a focus on AI-supported multi-agent development processes and documentation automation; (b) freelance support for industrial, logistics, and financial companies in IT-related transformation projects.
Current product portfolio under the Neckarshore AI brand:
- Omnopsis Documenter — AI-powered documentation engine: generates compliance, technical, and release documentation from Git, Jira, and Confluence. 500+ automated tests, 100+ API endpoints, RBAC, monitoring stack.
- TrustScope — trust analysis for public GitHub repos: deterministic three-pillar report (Security & Supply Chain, Governance, Community) based on OpenSSF Scorecard, with constructive fix suggestions instead of a single misleading score.
- md-viewer — dependency-free Markdown viewer for macOS (Finder Quick Action) and web, split view of rendered document and raw text.
- Obsidian Vault Autopilot — AI-supported vault automation for Obsidian × Claude Code: sorts the inbox, renames notes, enriches frontmatter.
- Phonesis Voice Bank — voice archive for families, hospices, and cultural archives (guided recordings, inheritable archive, optional voice cloning); currently in the GDPR compliance phase (Art. 9, biometric data).
- Multi-Agent Development Process — 12+ specialized agents (architecture, implementation, security, refactoring, marketing) with structured handoff protocol, parallel execution, and automated quality assurance — powers the entire product development.
- Freelance consulting: Technical Product Ownership for production, logistics, and compliance/AML systems; steering international rollouts including test, cutover, and change management.
Stack: NestJS, TypeScript, PostgreSQL, Redis/BullMQ, Next.js, Claude Code (Opus), Docker, GitHub Actions, Vercel
Maik S.
- Development of a new generation of Spring Boot microservices for an archiving system on OpenShift, monitoring, security analyses
Stack: Java, Spring Boot, Kafka, Vaadin, OpenShift 4.x, Maven, Artifactory, Jenkins, Git/Github, GitHub Copilot, GitOps, CI/CD, Kargo/ArgoCD
Ivan G.
Last position:
Technical Lead at Porsche Digital GmbH
- Contributed to the design of the new financial services integration layer and moderated the architectural discussions
- Oversaw the security concept and approval of the application
- Prepared infrastructure setup and best practices for the Kotlin backend
Gildas D.
Last position:
System Team Lead Diagnostics – Hybrid & Electric Drives (HEV/MHEV/PHEV) for Transmission and Engine (NA/SA) at Stellantis e-transmission
- Technical lead of diagnostics activities for eDCT transmissions and drive systems in the area of hybrid (HEV), mild-hybrid (MHEV), and plug-in hybrid vehicles (PHEV)
- Responsibility for the development and validation of DTC strategies (OBD / EOBD) for markets in North and South America and the EU
- Coordination between interdisciplinary teams (system development, software, safety, calibration, after-sales)
- Creation and maintenance of diagnostic specifications (DID, DTC matrix, snapshot, freeze frame) according to STLA standards
- Support with troubleshooting, validation tests, EOL processes, and internal audits
- Technical interface to suppliers (Bosch, Valeo, etc.) in the area of actuators, sensors, and electric pumps
- Creation of diagnostic RFQ
Deepak N.
Last position:
Consultant at Advantest Europe Gmbh
- Develop hardware drivers and middleware using C++11, Java and Python
- Design of various RF features such as deembedding based on stakeholder requests
- Work with multiple teams to design drivers for multiple RF products
- Perform HW control to deliver RF signals and measure modulated response
- Develop RF drivers for generation of low noise signals to test WiFi7 products
- Use digital modulation techniques such as QAM for low level driver development
- Develop low level USB drivers for device enumeration
- Develop drivers for HW relay control of control boards for device testing
- Perform JTAG operations on devices under test
- Use network-based protocols (SFTP, UFTP, FTP, SSH) for control board communication
- Manage HW devices such as BADC and EEPROM for control board maintenance
- Utilize C++11/14/17 features, template metaprogramming and STL
- Employ multithreading for testing and control of multiple HW devices
- Develop tools for deployment of customer OS on control boards
- Perform component and integration tests using CxxTest
- Follow Scaled Agile Framework for software development
- Create detailed design documents using PlantUML
Discover over 15,000 top freelancers
Statistics of experts using Java
Aggregated from the professional profiles of matched freelancers.
Experience
20 years (Germany: 19 years)
Position duration
2.4 years (Germany: 3 years)
Positions per freelancer
13
Top business areas
Information Technology, Product Development, Project Management
Top industries
Information Technology, Automotive, Manufacturing
Certification focus areas
Information Technology, Project Management, Product Development
Bachelor's degree or higher
97% (Germany: 91%)
Master's degree or higher
49% (Germany: 56%)
Certifications per freelancer
2 (Germany: 3)
Most common languages
English, German, French
Speak two or more languages
100% (Germany: 97%)
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 Stuttgart 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.
Discover detailed Java rate benchmarks:
Explore rate insightsAverage rates of experts in Stuttgart using Java
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.
Java 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 (90%)
- Automotive (66%)
- Manufacturing (46%)
- Banking and Finance (39%)
- Transportation (29%)
- Government and Administration (29%)
- Aerospace and Defense (27%)
- Healthcare (27%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Java at a glance
Java is a general-purpose programming language and runtime used for reliable, maintainable software. Its JVM execution model supports applications across operating systems, while strong typing, automatic memory management and mature libraries suit long-lived business systems. The Java ecosystem is also commonly described through the Java platform or JVM ecosystem.
What Java builds
Java specialists create backend services, APIs and business-critical applications for systems that must remain stable as demand grows. Typical work includes:
- Spring Boot microservices and REST APIs
- Payment, logistics and manufacturing systems
- Data processing and integration services
- Android applications and shared libraries
Java also runs in web applications, financial services, telecommunications and public-sector environments. Its broad adoption makes it practical when several teams need to maintain the same product over time.
Ecosystem and tooling
Strong Java professionals work comfortably with Spring Framework, Spring Boot, Jakarta EE, Hibernate and Maven or Gradle. They use JUnit, Mockito and Testcontainers to verify application behavior, and connect services with Kafka, REST, messaging systems and relational databases. Docker, Kubernetes and cloud services often form part of the delivery environment.
When freelance expertise helps
Companies bring in Java specialists when a platform needs focused delivery, modernization or additional capacity. Common signals include:
- A monolith needs to be split into well-defined services
- Legacy Java or Jakarta EE code needs a safe upgrade
- APIs require stronger testing, security or observability
- An internal team needs support for a time-critical release
In Stuttgart, Java expertise can support automotive, industrial, financial and logistics systems. Remote collaboration works well when documentation, architecture decisions and review practices are clear; on-site work may help with complex stakeholder coordination.
Skills beyond the language
Java work rarely ends with syntax. Professionals should understand domain modeling, API design, SQL, transactions, concurrency and application security. Experience with CI/CD, cloud deployment, monitoring and distributed-system failure modes helps turn code into a dependable service.
They should also communicate trade-offs clearly. A strong specialist can explain why a Spring Boot service, a modular monolith or a different architecture fits the product rather than applying a pattern by default.
How to assess quality
Review delivered systems, not only framework lists. Ask how the specialist handled testing, backward compatibility, performance constraints, production incidents and technical debt. Useful evidence includes clear pull requests, automated tests, deployment practices and decisions recorded in understandable language.
For Stuttgart teams, agree early on working language, meeting cadence and the balance between remote and on-site collaboration. The best fit combines current Java knowledge with the ability to work inside your domain, existing architecture and delivery process.
Frequently asked questions
Not sure where to start with Java? These answers cover the essentials.
Java is used for backend services, enterprise applications, APIs, financial systems, manufacturing software and data-processing services. Its mature libraries and JVM runtime make it suitable for products that need stable operation and long-term maintenance.
Java and C# both support strongly typed application development, extensive libraries and mature tooling. The choice often depends on the existing runtime, cloud environment, team skills and business ecosystem rather than language syntax alone.
A strong Java specialist often works with Spring Boot, SQL, REST, messaging, automated testing and CI/CD. Experience with Docker, Kubernetes, cloud services, observability and application security is valuable for production systems.
The right level depends on the system’s risk and scope, not a fixed number of years. A migration or distributed platform needs someone who has handled comparable architecture and production constraints, while a contained service may need narrower Spring Boot and testing expertise.
Java projects are often well suited to remote collaboration because source control, automated tests and build pipelines make work visible. Stuttgart companies should still define documentation standards, overlap hours, meeting language and any occasions where on-site coordination matters.
A Java freelancer can help when a company needs focused expertise for modernization, a release, a migration or a temporary capability gap. This approach works best when the scope, access rights, ownership of deliverables and handover expectations are explicit.
Ask a Java professional to explain design decisions, testing boundaries, failure handling and production support from a comparable project. Review code samples or technical walkthroughs for clarity, maintainability, security awareness and sensible use of frameworks.
Java has a long history in Android development, although modern Android projects may also use Kotlin. A specialist should explain which parts of the mobile codebase use Java, how interoperability is handled and whether the project’s current tooling supports the proposed approach.
The average hourly rate of freelancers in Stuttgart, Germany who have used Java in their recent projects is 100 €, which corresponds to a daily rate of about 802 € based on an 8-hour working day.
Of the freelancers in Stuttgart, Germany who have used Java in their recent projects, 97% hold at least a Bachelor's degree and 49% hold at least a Master's degree.
On average, freelancers in Stuttgart, Germany who have used Java in their recent projects have 20 years of professional experience, with a single engagement typically lasting around 2.4 years.
The most common languages among freelancers in Stuttgart, Germany who have used Java in their recent projects are English (100%), German (98%), and French (34%).
The most common industries among freelancers in Stuttgart, Germany who have used Java in their recent projects are Information Technology (90%), Automotive (66%), and Manufacturing (46%).
The most common business areas among freelancers in Stuttgart, Germany who have used Java in their recent projects are Information Technology (93%), Product Development (88%), and Project Management (59%).
Main locations of FRATCH Experts, who have recently used Java
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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