Postman Experts in Stuttgart
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Meet FRATCH Experts in Stuttgart, who have recently used Postman
Matthias Spiller
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
German Rauhut
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
Wael Mansour
Last position:
Test Manager at Schwarz IT
- Design, planning, and test case analysis
- Integration testing
- Coordination of UAT in the lab and on site
- Creation of HW and SW test catalogs
- Communication of test results from REST services with the SAP team
- Support for branches in the EU until rollout
- Coordination of defect management and SW updates with the involved vendors
- Checking the configuration of the charging stations in the backend software for different countries
- Continuous reporting of the quality status to project management
- Documentation of the user manual in English and German
- Tools: Confluence, be.Energised, OCPP Postman, OPI, CCV (payone.elavon), Excel, it4you
Robin Sadlo
Last position:
Senior Cloud & Backend Engineer at Media-Saturn-Holding GmbH
- Implementing applications with Kotlin and Ktor as microservices
- Using MongoDB in the MongoDB Atlas cloud
- Asynchronous communication of services via Google Pub/Sub
- Using Kotest and MockK for unit tests
- Developing an administration frontend with TypeScript, React and Express.js
- Provisioning environments in GCP using Terraform
- Implementing CI/CD processes with GitHub Actions
- Operating scalable production and test environments in GCP with Kubernetes, Helm and Flux CD
- Monitoring environments with Prometheus and Grafana
- Providing BI data in the Google BigQuery data warehouse
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
Mangal Mahalinge
Last position:
Trainee Product Management at Digitale Leute Schule
- Remote learning with experts and 636 instructional units.
- Product management bootcamp teaching agile methods and software tools for modern product management in complex software projects.
- User experience (UX) · product management · Figma (software) · user-centered design · Scrum · agile project management · Jira · Confluence · product discovery · backlog management · user experience design (UED) · prototyping · lean thinking · product roadmapping · user stories · Miro collaboration platform · application monitoring tools · performance metrics · lean product management · product design kickoff indicators (KPI) & tracking events · product strategy · business modeling · product vision & goals · product discovery.
Erol Tel
Last position:
Continental AG
- Analyze and fix data flows between PMD and SAP HR/S4 systems using SAP PI/PO and ABAP, especially in the HR area.
- Provide integration services by developing, customizing, and troubleshooting issues in custom interfaces and processes.
- Participate in technical and functional discussions to align the HR system architecture and integration strategies.
- Ensure system stability and data accuracy by proactively identifying and resolving integration issues to contribute to ongoing project success.
- Transfer HR data via OData service to SuccessFactors ABAP-OO report: access LDAP user data alongside SAP user data and update the email address and Windows ID in SAP.
- S/4 HANA, ABAP/4, ABAP-Object, S/4 HR, FI, SoapUI, Postman, REST API, JSON.
Discover over 15,000 top freelancers
Statistics of experts using Postman
Aggregated from the professional profiles of matched freelancers.
Experience
20 years (Germany: 17 years)
Position duration
1.6 years (Germany: 1.8 years)
Positions per freelancer
17 (Germany: 12)
Top business areas
Information Technology, Quality Assurance, Product Development
Top industries
Information Technology, Automotive, Manufacturing
Certification focus areas
Information Technology, Quality Assurance, Product Development
Bachelor's degree or higher
100% (Germany: 93%)
Master's degree or higher
25% (Germany: 58%)
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 Postman
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
API testing
Postman is used to test APIs before they reach production and after every change. It helps teams send requests, inspect responses, and keep shared collections for common checks. Strong specialists turn manual API checks into repeatable routines.
Collections and environments
- Organise requests into collections
- Manage environments for dev, test, and live systems
- Reuse variables, scripts, and headers across flows
- Share work with other specialists and review changes
This is where Postman becomes part of daily delivery work, not just a one-off test tool.
Automation and CI
Postman fits teams that want API checks in the delivery pipeline. Experts use Newman, scripts, and collection runners to automate regressions and catch broken contracts early. They also know when a simple manual check is enough and when automation should take over.
Documentation and collaboration
Postman is often the source of truth for API notes, example requests, and onboarding material. Good professionals write clear descriptions, keep examples current, and make sure teams can understand how to use an endpoint without asking for help. In Stuttgart, this matters for mixed on-site and remote teams working across German and English.
When to bring in help
- An API is unstable or poorly documented
- Test coverage is missing or inconsistent
- Collections are messy or hard to maintain
- Teams need better handover material
Freelance Postman experts are useful when a product team needs structure fast, but does not want to hire permanently.
What strong specialists do
Good Postman professionals go beyond clicking requests. They understand APIs, authentication, JSON, common status codes, and the wider tooling around Git, CI systems, and backend services. The best ones leave behind clean collections, practical checks, and documentation that other specialists can trust.
Frequently asked questions
Everything clients usually want to know about Postman, in one place.
Postman is used to send API requests, inspect responses, and keep reusable collections for testing and documentation. Companies rely on it to check endpoints during development, prepare handover material, and verify that services still behave as expected after changes.
Postman is usually chosen for its mix of testing, collaboration, and documentation in one place. Compared with lighter request clients, it gives teams more structure; compared with full test frameworks, it is easier to start with for shared API work.
A strong Postman specialist should understand APIs, JSON, authentication, HTTP methods, and status codes. Git, CI pipelines, and basic scripting are also useful, especially when collections need to run in automated checks.
A Postman project can benefit from help as soon as requests, tests, or documentation start to feel inconsistent. You do not need a large programme to justify it; even a small team can use a specialist to clean up collections, improve checks, and set a better standard.
Yes. Postman is well suited to mixed remote and on-site collaboration because collections, environments, and example requests can be shared easily. In Stuttgart, companies often use it with teams that switch between German and English, so clear naming and comments matter.
Postman collections can be run outside the app with Newman, which is useful for automation in delivery pipelines. Companies bring in specialists who know both tools when they want repeatable API checks as part of continuous integration.
Look for clean collections, clear naming, sensible variable use, and tests that check real risks, not just happy paths. A good Postman freelancer also explains choices, keeps documentation up to date, and leaves the project easy for other specialists to continue.
Postman is used for both. Teams use it to validate endpoints and to document how those endpoints should be called, which makes onboarding and cross-team work much smoother than relying on separate notes alone.
The average hourly rate of freelancers in Stuttgart, Germany who have used Postman in their recent projects is 121 €, which corresponds to a daily rate of about 967 € based on an 8-hour working day.
Of the freelancers in Stuttgart, Germany who have used Postman in their recent projects, 100% hold at least a Bachelor's degree and 25% hold at least a Master's degree.
On average, freelancers in Stuttgart, Germany who have used Postman in their recent projects have 20 years of professional experience, with a single engagement typically lasting around 1.6 years.
The most common languages among freelancers in Stuttgart, Germany who have used Postman in their recent projects are German (100%), English (100%), and Spanish (22%).
The most common industries among freelancers in Stuttgart, Germany who have used Postman in their recent projects are Information Technology (89%), Automotive (78%), and Manufacturing (67%).
The most common business areas among freelancers in Stuttgart, Germany who have used Postman in their recent projects are Information Technology (100%), Quality Assurance (100%), and Product Development (89%).
Main locations of FRATCH Experts, who have recently used Postman
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 
Essen 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
