Postman Expert in Stuttgart
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Meet FRATCH Experts in Stuttgart, who have recently used Postman
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
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
Wael M.
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 S.
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
Benjamin S.
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
Achille C.
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
Marcel S.
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 M.
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 T.
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: 16 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: 59%)
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 19 Sep 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 19 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
Postman 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 (89%)
- Automotive (78%)
- Manufacturing (67%)
- Government and Administration (67%)
- Banking and Finance (56%)
- Retail (56%)
- Insurance (44%)
- Transportation (44%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
API testing
Postman is a workspace for designing, sending and validating API requests. Teams use it to test REST, GraphQL and other HTTP services, inspect responses and verify authentication, headers, parameters and error handling. It supports both exploratory checks and repeatable quality processes.
Collections and environments
Postman collections group related requests into clear, reusable API workflows. Environments store variables for local, test, staging and production systems, while scripts prepare data and validate responses. Strong specialists create maintainable structures instead of isolated requests that are difficult to reuse.
Automation tooling
Postman connects manual API work with automated delivery through collection runners, monitors and Newman, its command-line companion. Specialists often integrate these capabilities with CI pipelines, test reporting and source control. They may also work with OpenAPI definitions, mock servers, webhooks and external test data.
- Build reusable collections for service boundaries
- Add authentication, variables and test scripts
- Run API checks in continuous integration
- Generate clear documentation for consumers
When companies need help
Companies bring in freelance Postman expertise when an API needs dependable coverage before release, when documentation has fallen behind implementation or when several teams share complex services. In Stuttgart, specialists may support automotive, manufacturing, software and other regional teams while collaborating remotely or on site. German and English communication can both matter in distributed projects.
Delivery and collaboration
A Postman professional should clarify API contracts, environments, test data and ownership before changing collections. They translate business scenarios into checks for status codes, schemas, permissions, pagination and failure paths. Remote collaboration works well when repositories, credentials, review rules and pipeline access are documented; on-site workshops can help align product and service teams.
Signs of quality
Look for professionals who can explain why a test belongs at the API layer and how it will remain useful as services change. Practical quality includes readable naming, isolated data, secure variable handling, reliable assertions and useful failure output. A strong specialist also understands the systems around Postman, from API gateways and identity services to CI tooling and observability.
- Separate test data from reusable request logic
- Cover successful, invalid and unauthorized requests
- Keep collections versioned and reviewable
- Connect checks to release decisions
Frequently asked questions
Everything clients usually want to know about Postman, in one place.
Postman is used to design, send and test API requests. Companies use it to explore services, verify responses, build reusable collections, create documentation and automate checks before or during delivery.
Postman offers a broad workspace for API requests, collections, documentation, collaboration and automated runs. Insomnia can suit teams that prefer a focused client, while SoapUI is often considered for established SOAP or contract-testing workflows; the right choice depends on protocols, governance and existing tooling.
A strong Postman freelancer usually understands HTTP, REST, GraphQL, JSON, authentication and API contract design. Useful adjacent skills include JavaScript for test scripts, OpenAPI, Newman, CI systems, Git and tools for monitoring or API gateways.
The need depends on the API landscape, test depth and delivery risk rather than on the tool alone. A straightforward collection cleanup may need focused expertise, while a shared testing strategy requires someone who can structure environments, data, ownership, automation and reporting.
Yes. Postman work is well suited to remote collaboration when API specifications, environments, credentials and repository processes are accessible. Stuttgart companies may still choose on-site workshops for alignment across product, quality and service teams, with German or English used according to the project.
Review whether Postman collections are readable, reusable and tied to meaningful service scenarios. Good work separates variables and data, checks positive and negative paths, protects secrets, produces actionable failures and remains maintainable when endpoints change.
Postman can cover a substantial part of API validation, especially when collections run through Newman or a CI pipeline. It does not automatically replace unit, integration, security or browser testing, so a specialist should define its role within the wider quality strategy.
A Postman specialist should clarify the API contract, environments, authentication method, test data, expected risks and delivery pipeline. They should also agree on collection ownership, review standards, documentation needs and how failures will reach the responsible team.
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 Countries:
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Philipp Thomaschewski
FRATCH CEO
