Postman Experts in Stuttgart
for reliable API delivery, matched in minutes with vetted and available freelancersHire experts who design API collections, automate tests and document integrations across REST, GraphQL and CI/CD workflows. Get precise, fast matching with vetted, available freelancers who can work remotely or alongside your Stuttgart team.
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
21 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: 92%)
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 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.
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 29 Oct 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 collaboration
Postman is a platform for designing, sending, testing and documenting API requests. Teams use it to explore REST, GraphQL and SOAP services, validate responses and share reliable examples with product and engineering stakeholders. It supports the full API lifecycle from an early contract to ongoing maintenance.
Collections and environments
Postman collections group requests into reusable workflows for manual checks, regression coverage and onboarding. Environments and variables keep local, test and production values separate, while scripts can prepare requests and validate responses. Strong specialists structure collections so they remain readable as APIs change.
Testing and automation
Postman experts create assertions for status codes, headers, schemas, authentication and business rules. They run collections with Postman CLI or Newman and connect them to CI/CD pipelines, source control and release checks. This turns exploratory API work into repeatable quality gates rather than isolated manual tests.
Integrations and use cases
Companies bring in Postman specialists when APIs need clearer ownership, faster validation or better handover between teams.
- Build and maintain collections for internal and public APIs
- Test authentication, error handling, pagination and data contracts
- Generate API documentation and practical examples
- Connect collection runs with CI/CD and release workflows
- Investigate integration failures across services and environments
Skills around Postman
Useful expertise extends beyond the Postman interface. Professionals often work with OpenAPI specifications, JSON, HTTP, OAuth, webhooks and service virtualization. They may also bring experience with JavaScript test scripts, Git workflows, Newman, Postman CLI and observability tools, helping teams connect API validation with wider delivery processes.
Choosing a specialist
Look for someone who can explain why a collection is structured a certain way, not just someone who can send a request. A strong professional demonstrates thoughtful assertions, secure variable handling, clear documentation and reliable failure reporting. For Stuttgart teams, remote collaboration can work well when environments, responsibilities and review routines are documented clearly; on-site sessions can help during complex integration work.
Frequently asked questions
Everything clients usually want to know about Postman, in one place.
Companies use Postman to explore APIs, send requests, test responses and publish documentation. It is useful for integration work, regression checks, onboarding and communication between API producers and consumers.
Postman combines request exploration, collections, scripted tests, documentation and team workflows in one product. Insomnia can suit teams that prefer a leaner client, while SoapUI is often chosen for deep SOAP and service-testing scenarios; the right choice depends on protocol coverage and delivery processes.
A strong Postman specialist usually understands HTTP, JSON, REST, GraphQL, OAuth and OpenAPI. JavaScript scripting, Git, CI/CD, Newman or Postman CLI, and experience with logs and observability make the work more valuable.
The required level depends on the scope. Basic request checks may need practical API testing knowledge, while shared collections, contract validation, authentication flows and CI/CD integration call for a specialist who understands test design and release risks.
Yes, Postman work is often suitable for remote collaboration because collections, environments, documentation and test results can be shared digitally. Stuttgart teams should still agree on access controls, review routines, working language and how sensitive environment data is handled.
A Postman freelancer can help when API quality work is blocking releases, internal knowledge is limited or a team needs a clean testing framework quickly. They can also audit existing collections and leave behind standards that internal specialists can maintain.
Review whether Postman collections cover successful and failing paths, use clear naming, isolate environment data and produce useful failure messages. Ask for examples of authentication handling, schema validation, documentation and integration with the team’s delivery workflow.
No, Postman also supports GraphQL, SOAP, WebSocket and other request-based workflows. Its value depends on how well the specialist models the protocol, prepares realistic test data and connects checks to the API’s documentation and delivery process.
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 21 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:
Request a free demo
Get in touch with the FRATCH team and we will get back to you within 4 hours.
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We always have the time for a call or email!
Philipp Thomaschewski
FRATCH CEO
