REST API Experts in Bremen
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Meet FRATCH Experts in Bremen, who have recently used REST API
Kathrin S.
Last position:
Requirements Engineer at Governikus GmbH & Co. KG
- Impact: Structured requirements analysis and quality assurance as a foundation for the further development of a software solution.
- Analysis, documentation, and coordination of requirements. Conducting stakeholder analyses, interviews, and workshops to gather and validate requirements. Conducting requirements reviews and working closely with business departments and development teams.
Techniques & Tools: Requirements Engineering, Stakeholder Management, Workshop Facilitation, System Context Modeling, Requirements Reviews, Quality Scenarios, Miro, Jira, Confluence
Dimitri S.
Last position:
Fullstack Developer, Integrator at Generali Deutschland Versicherung AG
- Developing automated build and deployment processes for the exclusive front office systems
- Integrating the front office systems into the IT infrastructure
- Developing innovative, user-friendly sales software for financial advisors
- Ensuring quality and flexibility through automation and working with CI/CD
- Working according to DevOps principles
- Operating the software together as a team in the AWS cloud and Azure cloud
- Deploying software artifacts to testing and production environments
- Maintaining the test environments
- Performing error analysis and providing information for further root cause analysis
- Maintaining and supporting the build pipeline
- Supporting load testing
- Coordinating the batch execution schedule with batch automation
- Creating concepts to further develop the software packaging process
- Building and delivering components to partners
- Developing GitLab and Jenkins pipelines for building, deploying and integrating components
- Automating processes with Spring Boot applications with a GUI (Thymeleaf, Angular 19)
- Developing RESTful Spring Boot applications with Kotlin and Angular 19, JDBC and REST accesses, data exchange via SFTP, XML (JAXB)
- Designing components using Domain-Driven Design (DDD)
- Replacing cmd and bash scripts with Spring Boot applications with a GUI
- Replacing Java 8 applications with JSP by Spring Boot 3 applications (Thymeleaf, Angular)
- Implementing frontend and backend authentication via Keycloak
- Writing JUnit tests with Mockito
- Increasing code coverage for SonarQube analysis
Nandini V.
Last position:
Senior Software Developer at Capgemini Technology Services Limited
- Designed and implemented secure backend services using Java, Spring Boot, and Hibernate, following microservice principles and RESTful standards.
- Implemented GraphQL-driven REST APIs to streamline backend services in a Gradle and Maven environment.
- Implemented OAuth2-based authentication and authorization mechanisms to secure RESTful APIs in Spring Boot applications.
Juri S.
Last position:
Software Development at Banking Environment
- Extension of an existing application with new customer requirements.
- AlmaLinux, Ubuntu; C, gcc; Oracle;
- Socket/TCP communication.
- CLion, Eclipse
- Git
Aschok D.
Last position:
Fullstack Developer at Netkitchen GmbH
- Backend & Frontend development (Full-Stack)
- PHP, MySQL, Laravel, Symfony, Twig, Vue.js, ExtJS, jQuery, JavaScript/TypeScript, HTML5, CSS3, Smarty
- Fact-Finder, Git, Jira, Jenkins, Scrum
- Based on Shopware 5 & 6
- ERP system integration
- Experience with REST APIs
- Developed a Laravel script to migrate all data (products, product images, orders, customers, prices, etc.) from Shopware 5 to Shopware 6
- Able to develop any kind of Shopware 6 and Shopware 5 plugins
Timo K.
Last position:
Senior Fullstack Developer
- Lead Developer / Tech Lead in a large banking group for a complete redevelopment of payment systems
- Rebuilding payment processing in stream processing
- Development and design of cross-border payment stream processing based on Kafka and Kafka Streams
- Development of different input formats for the business team using Drools rules to dynamically adjust validation rules
- Evaluation and comparison of different public cloud providers regarding the databases they offer
- Technologies & Tools: Java 21, Kotlin, Spring Boot, Kafka, Kubernetes, Azure, TDD, JEE, REST, Angular, Spark, Google Cloud, SCDF, PostgreSQL, Drools, Git, S3, MongoDB
Alexander E.
Last position:
Founder & Managing Director at Graphek GmbH
UI/UX / Development of custom applications, APIs and WordPress themes in frontend and backend
Technologies and skills: WordPress, WooCommerce, Gulp, MySQL, Ajax, Git, Vanilla JS, Composer, REST, HTML5, CSS3, PHP, Laravel, jQuery, VueJS, LESS, SASS, CSS Animations, UI/UX, Wireframes, Prototyping, Design Thinking, Web Design, App Design, Concepts, Responsive, Cross-Browser, Performance, SEO, Google Adwords
Key projects:
- OBI App UI/UX concept with integrated market navigation including design system build (2019-2020, 12 months)
- SVG animations and landing pages development (2018-2019, 6 months)
- Tönnjes Group websites maintenance and development (2019-present, 28+ months)
- AboutYou shop system concept, design & development (2018, 6 months)
- Tesa website UI/micro-macro interactions and design system (2021, 7 months)
- Sixt limousine service website UI/UX (2018-2019, 5 months)
- WordPress website development and maintenance (2020-2022, 24 months)
- HanseMerkur partners web development and SEO (2023-present)
- VW cars maintenance app concept, design system, wireframing, clickdummies (2023, 6 months)
- Animation design and conception (2020-2022, 2 years)
Discover over 15,000 top freelancers
Statistics of experts using REST API
Aggregated from the professional profiles of matched freelancers.
Experience
17 years
Position duration
2.4 years (Germany: 2.9 years)
Positions per freelancer
14 (Germany: 12)
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Manufacturing, Automotive
Bachelor's degree or higher
100% (Germany: 92%)
Master's degree or higher
83% (Germany: 55%)
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 Bremen 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 Bremen using REST API
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.
REST API 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 (100%)
- Manufacturing (57%)
- Automotive (43%)
- Banking and Finance (43%)
- Insurance (43%)
- Transportation (43%)
- Government and Administration (43%)
- Retail (43%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
REST basics
A REST API lets systems exchange data through standard HTTP methods like GET, POST, PUT, and DELETE. It is a common way to expose business functions to web apps, mobile apps, partners, and internal tools. Strong work starts with clear resources, stable URLs, and clean request and response formats.
Typical deliverables
Companies bring in specialists to design new endpoints or refine existing ones. Common work includes:
- API design and endpoint structure
- OpenAPI or Swagger documentation
- authentication and authorization flows
- error handling and response standards
- versioning and backward compatibility
Ecosystem and tooling
REST lives in a wider ecosystem of JSON, HTTP headers, caching, and API gateways. Professionals often work with OpenAPI, Postman, Swagger UI, curl, OAuth 2.0, and logging tools to test behavior and document contracts. In Bremen, this often supports logistics, maritime, trade, and industrial systems that need reliable data exchange.
When freelance help makes sense
Freelance expertise helps when a team needs to ship an interface quickly, clean up a messy API, or prepare a legacy service for outside users. It also helps when internal teams lack time for contract design, documentation, or integration testing. Companies usually want someone who can work remote, join short on-site workshops, and communicate clearly in English or German.
What strong specialists do
A strong REST API specialist thinks about consistency, not just code. They keep resource naming predictable, use proper status codes, protect sensitive data, and make responses easy to consume. They also spot edge cases early, such as pagination, idempotency, rate limits, and schema changes.
REST in real projects
REST APIs often sit between frontends, databases, ERPs, payment services, and partner platforms. They are used for customer portals, order flows, device data, service integrations, and public developer interfaces. Good specialists write for both today’s use and future extension, so the API stays usable as the system grows.
Frequently asked questions
Key details about REST API, drawn from the questions we get asked most.
A REST API is used to let different systems exchange data over HTTP in a predictable way. Companies use it for web apps, mobile apps, partner integrations, and internal services that need clear request and response patterns. It is a practical choice when teams want a simple interface that is easy to test and document.
REST API work is usually simpler to standardize than GraphQL and lighter to adopt than SOAP. REST fits well when the resource model is clear and the team wants straightforward HTTP methods, status codes, and caching behavior. GraphQL can help when clients need very flexible data fetching, while SOAP is still used in some older enterprise setups.
A strong REST API specialist usually knows HTTP, JSON, authentication, OpenAPI, and API testing tools. Experience with OAuth 2.0, logging, caching, and integration testing is also valuable. If the API connects to databases or external systems, clear data modeling and error handling matter just as much.
A REST API project can be small or complex, but quality depends on the number of systems, security needs, and contract rules. Simple internal endpoints may only need targeted support, while public or partner-facing APIs need stronger design, documentation, and version control. The right expert should match the project’s complexity, not just the framework.
Yes, REST API work is often well suited to remote collaboration because the key assets are specs, test cases, and documentation. For teams in Bremen, short on-site sessions can still help with workshops, stakeholder reviews, or integration handovers. Clear communication is usually more important than being in the same room every day.
Look for someone who can explain design choices clearly and who writes consistent, well-structured endpoints. A strong REST API freelancer should show examples of versioning, status codes, authentication, and documentation, not just code. Ask how they handle breaking changes, validation, and testing across consumers.
In practice, REST API and RESTful API are often used to mean the same thing: an interface built around REST principles over HTTP. You will also see people shorten it to REST. The important part is not the label, but whether the API is consistent, stateless, and easy for clients to consume.
Before hiring for REST API work, prepare the current endpoint list, data models, security requirements, and examples of any client problems. It also helps to share existing documentation, test cases, and integration dependencies. That gives the specialist a clear starting point and avoids rework.
The average hourly rate of freelancers in Bremen, Germany who have used REST API in their recent projects is 85 €, which corresponds to a daily rate of about 679 € based on an 8-hour working day.
Of the freelancers in Bremen, Germany who have used REST API in their recent projects, 100% hold at least a Bachelor's degree and 83% hold at least a Master's degree.
On average, freelancers in Bremen, Germany who have used REST API in their recent projects have 17 years of professional experience, with a single engagement typically lasting around 2.4 years.
The most common languages among freelancers in Bremen, Germany who have used REST API in their recent projects are German (100%), English (100%), and Spanish (29%).
The most common industries among freelancers in Bremen, Germany who have used REST API in their recent projects are Information Technology (100%), Manufacturing (57%), and Automotive (43%).
The most common business areas among freelancers in Bremen, Germany who have used REST API in their recent projects are Information Technology (100%), Product Development (100%), and Quality Assurance (57%).
Main locations of FRATCH Experts, who have recently used REST API
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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