REST API Expert in Nuremberg
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Meet FRATCH Experts in Nuremberg, who have recently used REST API
Maciej S.
Last position:
Product Owner at Bundesagentur für Arbeit
- As part of the project, the further development of the identity management system was driven forward. This included a comprehensive refactoring of the interfaces to the connected target systems. In addition, several special systems were successfully connected to the IAM to ensure end-to-end identity and authorization management.
- Technical design and solution proposals for IAM system development
- Requirements analysis and requirements management (IREB, BABOK)
- Alignment of the strategy with the future target architecture (TOGAF)
- Prototyping of solutions
- Documentation of requirements (Innovator)
- Analysis and documentation of requirements and creation of process models (UML, BPMN, ArchiMate)
- Modeling of requirements and system functionalities (OOA/OOD, UML)
- Further development of interfaces (SOAP, REST)
- Carrying out architecture reviews
Oleg O.
Last position:
Senior Software Developer / BI Integration Developer Power BI, C# at Telecommunications
Embedded Analytics & AI-assisted BI
Design and development of an integrated analytics solution based on ASP.NET Core, Power BI Embedded, and LLM services to provide context-based business information.
Development of an AI agent with Function/Tool Calling for the secure orchestration of REST APIs, SQL data sources, and technical services within defined business processes.
Building automated BI workflows including workspace management, deployment processes, and scheduled refresh via the Power BI REST API.
Implementation of secure service-to-service communication with Microsoft Entra ID and Service Principal, and integration into existing enterprise system landscapes.
Technologies: ASP.NET Core, C#/.NET, Power BI Embedded, Power BI REST API, LLM API, AI Agents, Function/Tool Calling, Entra ID
Bhagyashree M.
Last position:
Salesforce Administrator at gkk Frankfurt GmbH
- Translated complex operational requirements into scalable Salesforce configurations, automation flows and governance policies, ensuring clean and maintainable implementations
- Designed and optimised Flows to eliminate manual steps in key business processes, improving both performance and process compliance
- Managed user roles, permission sets and security settings for a multi-team Salesforce org; ensured data quality and system stability through structured governance practices
- Supported Marketing Cloud integrations and campaign automation workflows, collaborating with business teams on data-driven audience segmentation
- Coordinated release management and deployment activities with development teams, contributing to structured change control processes
Megha H.
Last position:
Freelance Frontend Developer at Self-employed
- Designing and developing responsive, accessible web applications for SMEs and private clients with React.js, Tailwind CSS, JavaScript, and HTML5.
- Building reusable UI component libraries to improve maintainability and reduce development time.
- Integrating REST APIs and implementing dynamic features (landing pages, portfolios, dashboards) based on Figma/Adobe XD designs.
- Independently managing the full project cycle (analysis, development, testing, deployment on Netlify/Vercel) while following mobile-first and cross-browser standards.
Partha N.
Last position:
AI Software Developer at Fraunhofer IIS
- Built a custom AI chatbot for an e-commerce client using GPT-4 and LangChain with RAG, reducing customer support ticket volume by 45% and improving response accuracy to 92%.
- Designed and deployed an intelligent document processing system using LlamaIndex, Pinecone, and FastAPI for a FinTech startup, enabling semantic search across 100K+ financial documents.
- Developed multi-agent AI workflows using CrewAI and LangGraph for a marketing agency, automating lead research, content generation, and outreach — saving 20+ hours/week of manual work.
- Created AI-powered automation pipelines using n8n, Make, and Zapier integrated with CRMs (GoHighLevel, HubSpot), reducing manual data entry by 80% for a real estate firm.
- Delivered prompt engineering and LLM fine-tuning consulting for multiple clients, optimizing AI model outputs for customer support, content creation, and data extraction use cases.
- Built production-ready REST APIs with Python and FastAPI to serve AI models on AWS and GCP, handling 10K+ daily requests with 99.9% uptime.
Michael F.
Last position:
Freelancer, Solution Architect at Schufa AG
- Helped to design the AWS infrastructure, integrated services and backend architecture for use cases of an on-premise solution and partial migrations to AWS with fast response times
- Implemented automated AWS integration test suites
- Implemented mission-critical components and delivered them before the deadline in a production-ready state with operation and monitoring concepts
- This 2-month subproject was about building a data-intense pipeline (5 TB) to be enriched continuously with data
- Designed and implemented reusable AWS CDK constructs to be used across the company’s teams to enable faster onboarding with AWS
- Coached on AWS topics, distributed software patterns, security, domain-driven design, agile collaboration and documentation to improve performance and collaboration
- Technologies: AWS, GitHub Actions, ETL, monitoring, operations, TypeScript, Python, AWS CDK, CloudFormation, Java, Docker, AWS ECS, AWS Lambda, serverless, Jenkins, DevOps principles
Johannes K.
Last position:
Software Developer at Hoffmann Engineering Services GmbH
- Software development
- Technical design of software architecture and design (considering functional and non-functional requirements)
- Frontend and Backend
- Refactorings
- Code reviews
- Unit tests
- Automated integration tests
- E2E tests
Global Identity Services (GIS) is the identity provider for the Digital Services Platform (DSP). GIS is responsible for authenticating and authorizing end users and other DSP services by issuing security tokens. This includes:
- Identity management (e.g., user registration, password reset and change, user profiles)
- Management of roles and permissions
- Single Sign-On (SSO) across DSP services
- Management of OAuth resources and terms and conditions
Benjamin S.
Last position:
CRM strategy & requirements analysis for marketing campaigns in the automotive sector at AUDI AG
- Development of strategies, processes and system requirements to further develop the lead and campaign streams of a Salesforce system for the subsystems Sales Cloud, Marketing Cloud and Analytics Cloud
- Gathering and creation of marketing strategy concepts for direct sales, focusing on lead generation for new and existing customers
- Analysis and optimization of existing and new contact points
- Derivation of system requirements and user tests for new developments
- Establishment of a requirements and implementation process for business needs at the interface between CRM strategy and marketing system operations
- Facilitation of ideation workshops with the project's stakeholders
- Mediation between business and technical project stakeholders
- Analysis and post-documentation of existing marketing strategies and the system functions already created for them
- Analysis of target groups and pre-system data quality as a foundation for new CRM strategies
- Consultation on content and asset strategy for marketing campaigns
- Definition of KPIs and other performance criteria for the system and CRM strategy
Arun Sai T.
Last position:
AI-Backend Developer Intern at Calvergy UA
- Integrated complex AI-based energy system models into the frontend framework, enabling the visualization of insights for 6+ key clients and maximizing energy utilization.
- Maximized energy efficiency and utilization by architecting the seamless data flow between AI models and the user interface for rapid, actionable reporting.
Shubhangi P.
Last position:
Parental leave
- Technology update
- Microsoft Azure certification
Elnazossadat H.
Last position:
Data Analyst at Siemens Healthineers
- Developed KPI dashboards using Power BI and DAX for 4+ business units, improving reporting transparency and strategic decision support.
- Migrated enterprise finance data views into dbt models, implementing modular SQL transformations, version-controlled data pipelines, and automated documentation to create a scalable analytics layer.
- Built dimensional data models in Snowflake for enterprise finance data, enabling scalable forecasting and supporting executive decision-making.
- Designed end-to-end ETL/ELT pipelines using Snowflake and SAP HANA, integrating data from 3+ enterprise systems.
- Automated monthly reporting workflows using SQL and Power BI, delivering strong business impact by reducing manual effort by 80%.
- Collaborated with finance stakeholders to translate business requirements into analytical data models, supporting strategic decision-making cycles.
- Delivered ad-hoc financial reports using Power BI, reducing turnaround time by 60%.
- Implemented data validation logic in SQL, resolving 95% of recurring data quality issues.
Dietmar B.
Last position:
Freelance Developer at Hirschmann/Belden
- Extension of test software for functional testing of IO modules in WPF with MVVM
- Configuration and extension of a specialized WPF control from Nevron
- Connection to Siemens PLCs via Siemens OPC UA Client and Allen-Bradley/Rockwell PLCs via Codebix OPC UA Client
- Integration of various data sources via REST API and JSON
- Development of stored procedures, views, and triggers for PostgreSQL and SQL Server with ADO.NET and Entity Framework 6
Radovan R.
Last position:
Development and Technical Architecture at HDI
Web application for contract changes
Micro frontend development from scratch through production with a Reactive Forms basis, Responsive Web Design, validation, multilingual support, accessibility, unit tests and component tests
Technologies: Angular 19-20, Nx, Angular CLI, Native Federation, TypeScript, HTML, SASS, Tailwind CSS, Angular Material, Reactive Forms, RxJS, Signals, PDF-Make, ng-openapi-gen, i18n, JSON Server, REST, JWT, Jest, Playwright, IntelliJ, Git, CI/CD with GitLab, Cloud Foundry, Nginx; Scrum
Premalatha S.
Last position:
Software Engineer at ASO-TDS(DISCOVERY)
- Created database schemas and liaised with geographically distributed teams using waterfall methodology
- Participated in business workshops and authored technical specification documents aligned with architectural requirements
- Developed high-quality code deliverables and reports using repository tools
Md. Shah S.
Last position:
Android Engineer at ScrapBays Ltd.
- Built features using Jetpack Compose
- Improved location-based features with in-memory caching
- Developed Merchant-to-Merchant chat functionality from scratch
- Integrated FCM with deep links to enable contextual push notifications
- Performance tuning for Google Maps view using clustering for better performance in dense areas
Discover over 15,000 top freelancers
Statistics of experts using REST API
Aggregated from the professional profiles of matched freelancers.
Experience
15 years (Germany: 17 years)
Position duration
2 years (Germany: 2.9 years)
Positions per freelancer
9 (Germany: 12)
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Automotive, Banking and Finance
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
100% (Germany: 92%)
Master's degree or higher
57% (Germany: 55%)
Certifications per freelancer
3
Most common languages
German, English, Hindi
Speak two or more languages
92% (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 Nuremberg 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 Nuremberg 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 (96%)
- Automotive (46%)
- Banking and Finance (42%)
- Manufacturing (38%)
- Government and Administration (31%)
- Retail (31%)
- Healthcare (23%)
- Professional Services (23%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What REST API means
A REST API is a web interface that lets software exchange data through HTTP. It models business objects as resources and uses familiar methods such as GET, POST, PUT, PATCH and DELETE. Responses commonly use JSON, while clear status codes explain the result.
What it builds
REST APIs connect browser applications, mobile products, internal tools and external services. They expose functions and data without tightly coupling the systems that use them.
- Customer, product and order services
- Mobile and single-page application back ends
- Partner and payment integrations
- Event, reporting and data access services
Ecosystem and tooling
Strong REST API work spans HTTP, JSON, authentication and database access. Professionals may use OpenAPI or Swagger for contracts and documentation, Postman for exploration, automated tests for verification, and gateways or service meshes for traffic control. Frameworks vary by language, but the core design principles remain consistent.
When companies need expertise
Companies often bring in freelance specialists when an API needs a reliable contract, a safer integration strategy or a path from a monolith toward services. In Nuremberg, teams in manufacturing, logistics, healthcare and software can benefit from professionals who combine remote delivery with clear communication for on-site collaboration when needed.
- Rework inconsistent endpoints
- Add authentication, authorization and rate controls
- Document an API for internal or external consumers
- Improve monitoring, testing and performance
What strong professionals deliver
A capable REST API specialist starts with consumer needs and domain concepts rather than simply exposing database tables. They define predictable resources, validation rules, error responses and versioning choices. They also consider idempotency, pagination, caching, observability and backward compatibility before implementation.
How quality is assessed
Review an expert’s API documentation, test approach and examples of integration work. Look for thoughtful security decisions, consistent naming and evidence that they have handled failure cases and changing requirements. A useful technical discussion should connect endpoint design with the data model, deployment process and operational ownership.
Frequently asked questions
Before you brief your next project: the most common questions about REST API.
A REST API allows separate applications to exchange data and trigger actions over HTTP. Companies use it to connect web interfaces, mobile applications, internal services, partner systems and cloud products.
A RESTful API organizes access around resources and predefined endpoints, which can make caching, monitoring and access control straightforward. GraphQL lets consumers request a tailored data shape through a query layer, but it adds different considerations for authorization, caching and operational control.
A strong REST API specialist should understand HTTP semantics, JSON, relational or document databases, authentication and automated testing. Experience with OpenAPI, cloud deployment, API gateways, logging and CI/CD is also valuable.
The right level depends on the API’s security needs, traffic profile, domain complexity and existing architecture. A small internal interface may need focused implementation skills, while a public or business-critical service calls for proven design, testing, documentation and production support.
Yes, REST API work is often well suited to remote collaboration because specifications, repositories, test collections and deployment pipelines can be shared digitally. Teams in Nuremberg should agree early on communication routines, documentation standards, security access and whether workshops require on-site presence.
Ask for examples of API contracts, documentation, automated tests and integration decisions rather than only finished screens. Discuss how the professional handles authentication, validation, versioning, error responses, observability and backward compatibility.
REST API describes an architectural style for using HTTP resources and representations, while HTTP API is a broader term for any API exposed over HTTP. An HTTP API may follow REST principles, but it can also use other designs or conventions.
A REST API professional can demonstrate quality through clear resource modeling, consistent endpoint behavior and useful OpenAPI documentation. Evidence of contract testing, secure access controls, meaningful status codes and careful handling of failures is especially persuasive.
The average hourly rate of freelancers in Nuremberg, Germany who have used REST API in their recent projects is 86 €, which corresponds to a daily rate of about 689 € based on an 8-hour working day.
Of the freelancers in Nuremberg, Germany who have used REST API in their recent projects, 100% hold at least a Bachelor's degree and 57% hold at least a Master's degree.
On average, freelancers in Nuremberg, Germany who have used REST API in their recent projects have 15 years of professional experience, with a single engagement typically lasting around 2 years.
The most common languages among freelancers in Nuremberg, Germany who have used REST API in their recent projects are German (100%), English (92%), and Hindi (19%).
The most common industries among freelancers in Nuremberg, Germany who have used REST API in their recent projects are Information Technology (96%), Automotive (46%), and Banking and Finance (42%).
The most common business areas among freelancers in Nuremberg, Germany who have used REST API in their recent projects are Information Technology (100%), Product Development (92%), and Quality Assurance (62%).
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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