SonarQube Experts in Stuttgart
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Meet FRATCH Experts in Stuttgart, who have recently used SonarQube
Sercan Tatar
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 matchmaking platform that connects relatives of people in need of care directly 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 the 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 a solo 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 via presigned URLs for verification of 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 placement process.
- Building 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.
Salim Chehab
Last position:
Cloud / Systems Architect
- Development and introduction of operational processes
- Preparation of complete documentation packages (including emergency management and operations) to meet compliance requirements
- Introduction of a workshop on IaC (Infrastructure as Code)
- Professional consulting for the project's security concept (ISMS)
- Installation and operation of Kubernetes clusters on AWS, on-prem, and Azure
- Design of hybrid cloud architecture (on-prem, Hetzner, AWS)
- Analysis and resolution of incidents and system outages
- Network changes to firewall rules, gateways, OpenVPN settings, and IPsec tunnel (pfSense)
- Professional 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
Achille Chimi
Last position:
Backend/Frontend Developer at ITZ-Bund
Development of a microservice application for calculating postings on accounts
Development of backend components with Java or JEE, Quarkus, Kafka, Rest API
Development of the test component with mocking frameworks (Mockito)
Development of integration test components
Creation of OpenAPI specification format
Configuration of CI/CD pipeline
Development of frontend components with React
Design, further development and optimization of system structures
Code review
Java Corretto 21, JEE, Quarkus, Golang
Reactive programming with Spring WebFlux, Project Reactor
Git, Azure DevOps for CI/CD pipeline, YAML, Json Swagger UI, Postman, Rest OpenAPI, Kafka Streams, Kafka Connect, Log4J
Microservices, Jira, Confluence, MySQL, Docker, Kubernetes (deployment via Helm charts)
Spring Security, OAuth 2, JWT, Sonarqube
IntelliJ, Maven, logging framework Splunk, Agile method Scrum, Nexus, Vaadin V24, build tool Vite
React, React.JS, Node.js, Jess/JavaScript, Tailwind CSS, Agile method Scrum, accessibility BITV, Playwright
Benjamin Schaich
Last position:
Design and implementation of a new cloud service at Porsche AG
- Design of a new cloud service
- Requirements Engineering
- API Design (REST API, Kafka)
- Consulting on architecture, feasibility and effort estimation
- Implementation of a microservice architecture
- Implementation of a Spring Boot web service
- Development of REST APIs including business and persistence logic
- Kafka consumers and producers
- Various Excel upload/download scenarios
- Change Data Capture
- Cloud provisioning with IaC/Terraform
- Go-live with 30,000 users
- Operation, support and bug fixing for other services
Environment/tools: GitLab, JIRA, Confluence, IntelliJ, Spring Boot, Java, Docker, Terraform, AWS ECS, Postgres, Apache Kafka, SAP Datasphere, JUnit, Debezium, Apache POI, Hibernate, JPA, Testcontainers
Marcel Schmidt
Last position:
Technical Lead / Lead Developer at REWE digital
- Due to an organizational restructuring towards product-based teams, the implementation of a Data Mesh in the area of Digital Supplier Management (DSM) was decided.
- A highly available real-time Data Mesh for providing large volumes of data via Kafka and REST to other products.
- New development of a core supplier management software in a (micro-)service-based architecture with a modern tech stack.
- Technologies/Tools:
- Java 21
- Spring Boot
- Angular
- TypeScript
- Go
- MapR
- Kafka
- Docker
- Google Cloud Platform (GCP)
- Kubernetes
- Helm
- GitLab CI
- Maven
- JUnit
- Mockito
- WireMock
- Cypress
- Keycloak
- OAuth 2.0 & OpenID Connect
- Humio
- Nexus
- Artifactory
- SonarQube
- Renovate
- Git
- Postman
- IntelliJ
Alban Tchuinkou
Last position:
C/C++ Developer on AIX Systems for SAP Kernel System Integration at IBM Research and Development
- AIX/Linux system administrator: deployment of LPARs (Logical Partitions) for SAP Kernel Development
- C/C++ SAP kernel development and integration to SAP HANA Database
- C/C++ programming and software integration, support for SAP kernel on AIX system; development and testing on SAP VDI
- Example: development of the ABEC Tool (AIX Build Environment Checker) to create SAP build environments for debugging process and benchmarking
- Benchmarking and test execution of SAP kernels (test from the communication to the SAP HANA Database and to SAP NetWeaver) on AIX
- Automate the SAP kernel build via Jenkins and benchmarking over crontab jobs
- New C/C++ compiler design and testing (based on Clang++ and LLVM)
- Customer ticket handling to resolve SAP kernel bugs and build failures
- SAP kernel development with Rust programming language, migrating some sub-kernel projects from C/C++ to Rust because of Rust's memory safety model, ownership system, and concurrency features
- Refactoring selected components in Rust and integrating them with existing C++ codebase via FFI
Discover over 15,000 top freelancers
Statistics of experts using SonarQube
Aggregated from the professional profiles of matched freelancers.
Experience
14 years (Germany: 19 years)
Position duration
1.3 years (Germany: 1.8 years)
Positions per freelancer
14
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Automotive, Information Technology, Banking and Finance
Certification focus areas
Information Technology, Operations, Product Development
Bachelor's degree or higher
100% (Germany: 91%)
Master's degree or higher
50% (Germany: 56%)
Certifications per freelancer
2 (Germany: 3)
Most common languages
German, English, Spanish
Speak two or more languages
100% (Germany: 97%)
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 Stuttgart 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 Stuttgart using SonarQube
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
Code quality control
SonarQube helps teams find bugs, code smells, security issues, and duplication before they reach production. It runs automated analysis on source code and shows where maintainability or security work is needed. Many teams use it as a clear quality gate in delivery pipelines.
Where it fits
- Pull request checks and merge gates
- Continuous inspection in CI/CD
- Legacy code cleanup and refactoring work
- Security review support for shared codebases
It is common in Java, JavaScript, Python, C#, and mixed stacks. In Stuttgart, it often appears in enterprise software, mobility, industrial, and regulated environments where release discipline matters.
Core ecosystem
SonarQube works with scanners, build tools, and source control systems. Strong specialists know how to connect it to Jenkins, GitLab, GitHub, Maven, Gradle, and modern CI workflows. They also know when to adjust rules instead of accepting the default setup.
What strong specialists do
A good SonarQube expert does more than install the server. They shape rule profiles, manage quality gates, reduce false positives, and make reports useful for teams. They also keep analysis stable across branches, pull requests, and long-lived maintenance work.
When companies bring help
Teams usually ask for freelance expertise when SonarQube is new, noisy, or hard to trust. Typical cases include pipeline integration, rule tuning, plugin issues, and cleaning up old code that triggers too many warnings. External help is also useful when teams need short, focused support without long onboarding.
Collaboration in practice
Remote work is often enough for most SonarQube tasks because setup, rule changes, and pipeline fixes can be done from anywhere. On-site time can help when the codebase is large, the build chain is complex, or several teams must agree on quality standards. In Stuttgart, mixed English and German collaboration is common in larger product teams and supplier setups.
Frequently asked questions
Quick answers to the questions that come up most around SonarQube.
SonarQube is used to inspect source code for bugs, code smells, duplication, and security issues. Teams use it to make code quality visible and to block weak changes before release. It is especially useful when many people touch the same codebase.
SonarQube goes beyond a linter because it analyzes deeper quality patterns, keeps historical findings, and supports quality gates. Linters are great for style and quick feedback, but SonarQube is stronger for broader maintainability and security checks. Many teams use both together.
A strong SonarQube specialist knows analysis rules, CI pipelines, and source control workflows. Useful adjacent skills include Java or another main language in the stack, build tools, and release automation. They should also understand how to reduce false positives without hiding real problems.
A SonarQube expert can often start with limited context if the pipeline, stack, and desired quality goals are clear. For larger systems, they need access to the build process, branch strategy, and key pain points in the codebase. Good requirements make tuning much faster.
Yes, SonarQube is commonly connected to Jenkins, GitLab, and GitHub workflows. The main task is to run scans at the right point and feed results back into pull requests or merge checks. A specialist can also help with tokens, permissions, and branch analysis setup.
Most SonarQube work can be done remotely because setup and tuning are digital tasks. On-site collaboration helps when many teams need to agree on quality rules or when build infrastructure is tightly coupled to local systems. Stuttgart companies often use a mix of both.
Look for someone who can explain why a rule exists, not just how to switch it on. A good SonarQube freelancer improves signal quality, keeps the pipeline stable, and avoids hiding real issues behind broad exclusions. Ask for examples of quality gate design and false-positive reduction.
No, SonarQube supports many languages and is often used in mixed stacks. Java is common, but teams also use it for JavaScript, Python, C#, and other codebases. The best setup depends on the languages, build tools, and review process you already use.
The average hourly rate of freelancers in Stuttgart, Germany who have used SonarQube in their recent projects is 106 €, which corresponds to a daily rate of about 851 € based on an 8-hour working day.
Of the freelancers in Stuttgart, Germany who have used SonarQube in their recent projects, 100% hold at least a Bachelor's degree and 50% hold at least a Master's degree.
On average, freelancers in Stuttgart, Germany who have used SonarQube in their recent projects have 14 years of professional experience, with a single engagement typically lasting around 1.3 years.
The most common languages among freelancers in Stuttgart, Germany who have used SonarQube in their recent projects are German (100%), English (100%), and Spanish (33%).
The most common industries among freelancers in Stuttgart, Germany who have used SonarQube in their recent projects are Automotive (100%), Information Technology (83%), and Banking and Finance (67%).
The most common business areas among freelancers in Stuttgart, Germany who have used SonarQube in their recent projects are Information Technology (100%), Product Development (100%), and Quality Assurance (83%).
Main locations of FRATCH Experts, who have recently used SonarQube
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 
Dusseldorf 
Nuremberg Request a free demo
Get in touch with the FRATCH team and we will get back to you within 4 hours.
Would you rather directly get in touch?
We always have the time for a call or email!
Philipp Thomaschewski
FRATCH CEO
