Backend for Frontend Experts in Germany
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Meet FRATCH Experts in Germany, who have recently used Backend for Frontend
Michael Gaskin
Last position:
Lead Global eCommerce Operations at PUMAGroup
- Bedrock technology operations role providing the foundations on which PUMA's global product teams build PUMA.com and associated systems
- Managed a €3.5 million CAPEX portfolio including ~20 externals and 16 platform and tooling vendors
- Started up and led five functional teams for platform engineering, cloud administration, edge technology, continuous performance testing, and L2 support / incident management
- Person of last resort for mysteries, intractable bugs, compliance crises, litigation support, and black-hole issues where ownership was unclear or contested
- Sole author and driver of a multi-million-euro, multi-year RFP for Global Operations Center serving the direct-to-consumer technology estate for eCommerce, order management, and brick-and-mortar retail tech support
- Conceived, designed, developed and productionized Order Viewer, a secure internal application providing observability into PUMA.com order data at sub-second latency; independently delivered architecture, implementation, GCP deployment, SSO integration and organizational compliance.
Patrick Waldschmitt
Last position:
AI Software Engineer at IppenMedia
- Analysis
- Consulting
- Software design
- Development
- Automation
- Testing
- Deployment
- Architecture, development and deployment of various proof-of-concept applications around the integration of current AI interfaces including conversational, realtime voice, images and videos
- Developed best practices for working with agentic systems and AI in practice
- Created code templates
Hüseyin Korkut
Last position:
Senior Full-Stack Engineer at DVAG
Architecture and implementation of a fully digitalized closing flow for managing securities contracts within the DVAG infrastructure. The platform aims for maximum user-friendliness, modular extensibility and compliant handling of sensitive data.
Implementation of a reactive UI structure with a focus on user guidance & accessibility.
Dynamic control of form and closing processes including validation logic.
Reactive state management via SignalStore (signals + selective effects).
UX optimization through adaptive components and Playwright-based UI tests.
Backend modularization to connect existing sales and contract logic.
API stability and DTO design according to Clean Architecture principles.
Collaboration with domain teams to define technical contracts and service boundaries.
Management with GitHub.
Unit tests with Jest, E2E tests with Playwright.
Code reviews, CI-integrated test execution, iterative refactorings.
Ensuring high coverage and UI stability in the closing flow.
Technologies: Angular 18, RxJS, SignalStore, HTML5, SCSS, Spring Boot, Kotlin, REST, OAuth2, Jest, Playwright, Clean Architecture.
André Ullmann
Last position:
RTE / Agile Coach / Full SAFe Consultant at Siemens Energy
- RTE/Agile Coach for the SAFe 6 (Scaled Agile Framework) rollout
- Building and establishing a LACE (Lean-Agile Center of Excellence) for several ARTs
- Using the tools: Azure DevOps with SCALE, Loop, MS Whiteboard
- Building the ART with 7 teams
- Training Product Owners, e.g. through SAFe POPM training and LearnSnacks
- Running the initial PI Planning as a Kickoff Planning Event
- Introducing a demand process
Jonas Taulien
Last position:
IT Consultant at Bechtle AG
- Prequalified 200 demands within five weeks on the multi-cloud-commerce platform bechtle-clouds.com with three external consultants
- Served a dual role as project manager and requirements engineer for various enhancements
- Domain topics: reimplementation of Entra ID Sync, improvement of support processes, optimizations in the product catalog
- Demand and project management in ServiceNow
- Refinement of epics and stories with internal teams and external service providers
- Management of the external international service provider
Matthias Lang
Last position:
Typescript Fullstack Engineer at Card Complete / Bank Austria
- Designed and developed the "Credit Risk Engine" using Camunda, Node.js and Typescript
- Greenfield project for credit card credit assessment for existing and new customers, including EBA KPIs, SCHUFA and CRIF scorings
- Built and modeled workflows (BPMN) and decision logic (DMN) with Camunda Modeler in close collaboration with stakeholders
- Implemented service tasks, user tasks and jobs with Nest.js, Node.js and Typescript, including exception handling
- Backend-for-Frontend (BFF), frontend with React, Tailwind and Ant Design UI library
- CI/CD with GitLab, Kubernetes/Rancher
Dennis Oberhoff
Last position:
Lead Software Engineer at Heinemann
- Led a team of four developers in a comprehensive rewrite of the Heinemann iOS app, successfully navigating a highly undocumented software environment.
- Implemented a frontend-first approach by adopting the backend-for-frontend (BFF) pattern, enabling frontend developers to lead API specification development for enhanced alignment and efficiency.
Muthukumar Kusalavan
Last position:
Senior Java Backend Developer at Upwork
- Developed Java 21 / Spring Boot 3.2 microservices with REST and GraphQL APIs for GDPR-compliant consent workflows using Hexagonal Architecture
- Enhanced Backend-for-Frontend (BFF) performance using AI-assisted tools for code refactoring and optimization
- Built event-driven workflows with Kafka, RabbitMQ, AWS SQS, and integrated Salesforce Marketing Cloud for real-time consent tracking
- Implemented OAuth2 and Keycloak security, automated CI/CD with Jenkins, GitHub Actions, and Gradle, and deployed containerized services on Docker and Kubernetes with AWS and Azure
- Executed unit, integration, and contract testing with JUnit 5, TestNG, Mockito, and TestContainers; monitored performance via Grafana, Kibana, and AWS CloudWatch
- Developed microservices for digital identity verification and e-signature management with Hexagonal Architecture
- Integrated Keycloak 24.x with OAuth2.1 and OpenID Connect for SSO and RBAC, ensuring EU eIDAS compliance
- Designed API-first microservices with OpenAPI 3.1, Swagger, and GraphQL for improved interoperability
- Automated CI/CD pipelines with Jenkins, GitHub Actions, and Gradle; deployed containerized services on AWS EKS and Azure; monitored with Grafana, Kibana, CloudWatch, and TestContainers
Andreas Nolden
Last position:
Open Source Founder at Privatier
- AI-supported source code analysis
- AI image generation for a shirt shop
- AI-supported analysis of connected YouTube channels and commenting users
- AI-supported software prototyping
- Operation of a local AI environment
- 3D printing and scanning: development of a process to repair GfK parts using 3D-printed negative molds
The focus is on practical applications of new technologies, founding an open-source project for a yacht autopilot, as well as yacht refit and motorhome conversion.
Marc Haid
Last position:
Senior Architect, Coach and Developer
Fixing issues in the application logic
Covering the changes with component tests
Analyzing and documenting the data structure of the different applications
Analyzing and documenting the parameters for configuring the applications
Analyzing and documenting the necessary measures to ensure the operation of the applications
Analyzing and designing the separation of the individual database structures
Analyzing and estimating the effort for planned enhancements
Analysis, maintenance and documentation of a heterogeneous legacy system landscape for a print media service provider
Technology: C#, VB.NET, C, Python, Microsoft SQL Server, Visual Studio 2010, JetBrains Rider, Visual Studio Code, arc42, Draw.io, Jira, GitLab
Roland Selmeier
Last position:
mediagear GmbH
- Implementation and support of digital transmission of laboratory report data to various practice software systems according to KVB standards
- Ensuring audit-proof archiving of all laboratory reports
- Developing and implementing sustainable optimization measures to increase efficiency in laboratory operations
- Close collaboration with software providers, practice teams, and the Bavarian Association of Statutory Health Insurance Physicians
- Applying agile methods such as Scrum and tools like Jira, Confluence, and MS Office
- Utilizing AI-driven processes to develop innovative solutions
Martin Menzel
Last position:
Florio C3G
- App that helps patients schedule their medication, track their symptoms, and biomarkers
- The app is being certified as a medical device
- Technologies: React Native, Expo, Redux Toolkit
Chris Taggeselle
Last position:
Backend Developer | DevOps at DEVK
The goal of the project is to integrate a new document creation system (MText) into the existing system landscape. For this, I independently develop several Spring Boot microservices that handle the conversion from XML to JSON formats and control direct communication with MText. The applications are containerized and run in the AWS Cloud with Kubernetes and Helm.
- Developed an integration service that bundles multiple calls and acts as a facade for communicating with various services
- Developed a conversion service to transform unstructured XML files into structured JSON files for different business units
- Extensive unit and integration tests for file conversion; mocking interfaces with WireMock, Aspects, etc.
- Unified exception handling with @ControllerAdvice and Aspects
- Professional design of OAS definitions (design-first approach)
- Created client and server implementations based on OAS definitions (OpenAPI Specification) using code generators and managed them in Nexus
- Logging in combination with the ELK stack
- Integrated the MText server via HTTP calls
- Created DORA-compliant tests with Xray in coordination with testers
- Set up the CI/CD pipeline with GitLab Actions
- Handled security issues from AquaScan and coding issues from SonarQube
- Distributed services across different stages (Dev, Test, VProd, Prod)
- Set up and maintained Helm charts
Technologies used:
- Backend: Spring Boot, Java 17, JUnit5, OpenAPI (OAS), OAuth2, WireMock
- DevOps: GitLab CI/CD, Kubernetes, Docker, Anypoint, Nexus
- Cloud: AWS, EKS
- Project management: Jira, Confluence
Discover over 15,000 top freelancers
Statistics of experts using Backend for Frontend
Aggregated from the professional profiles of matched freelancers.
Experience
16 years
Position duration
1.5 years
Positions per freelancer
13
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Automotive, Education
Certification focus areas
Information Technology, Product Development, Human Resources
Bachelor's degree or higher
89%
Master's degree or higher
44%
Doctorate
11%
Certifications per freelancer
4
Most common languages
German, English, French
Speak two or more languages
77%
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 Germany 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 Germany using Backend for Frontend
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
What BFF does
Backend for Frontend, often called BFF, sits between client apps and shared backend services. It gives each frontend its own tailored API shape, so web, mobile, and partner portals get only the data they need. That keeps the client code simpler and the backend easier to evolve.
Typical work
- Design client-specific API endpoints
- Aggregate data from services, queues, and legacy systems
- Reduce overfetching and round trips
- Separate web and mobile response needs
- Coordinate contract changes with frontend teams
Ecosystem fit
Strong specialists work with REST, GraphQL, and event-driven systems, depending on the product. They often use Node.js, Java, .NET, or Kotlin to build the BFF layer, plus OpenAPI, authentication flows, caching, and observability tools. The right setup depends on the existing service landscape and release process.
Where it helps
BFF is useful when one backend must serve several clients with different needs. It shows up in e-commerce, travel, media, internal portals, and regulated enterprise systems. In Germany, it is common in teams that need clean separation between product channels and core services.
When to bring in help
Bring in freelance expertise when client APIs feel bloated, frontend teams wait on backend changes, or mobile and web keep blocking each other. A good specialist can rescue an existing BFF, introduce better contracts, or design one from scratch. Remote work fits well; on-site time helps when many teams need alignment.
What strong specialists deliver
A strong BFF specialist thinks in products, not just endpoints. They model clear contracts, keep latency in check, and plan for versioning, security, and fault handling. They also write clean documentation and leave behind a service that other experts can maintain without guesswork.
Frequently asked questions
Not sure where to start with Backend for Frontend? These answers cover the essentials.
Backend for Frontend is used to create a backend layer that serves one client type well, instead of forcing every app to share the same generic API. It is common when web, mobile, and partner interfaces need different data shapes, request flows, or security rules. The goal is cleaner client code and less strain on core services.
BFF is not the same as an API gateway, although they can sit near each other in the architecture. An API gateway usually handles cross-cutting concerns such as routing, auth, and rate limits, while BFF focuses on client-specific composition and response design. Many projects need both, but they solve different problems.
Backend for Frontend makes sense when different clients need different views of the same business data. If a shared backend keeps growing special cases, or frontend teams keep asking for one-off endpoints, a BFF can reduce friction. It is less useful when all clients truly share the same contract.
A strong Backend for Frontend specialist knows API design, authentication, caching, error handling, and how frontend teams consume data. Experience with REST or GraphQL helps, as does comfort with the main service stack already in use. Good communication matters because this work sits between product, frontend, and core backend teams.
BFF work can be handled by a specialist with solid API and service-integration experience, even if the architecture is not huge. Simple setups may only need one person to shape contracts and fix bottlenecks. More complex landscapes need someone who has worked through versioning, observability, and change management before.
Yes, Backend for Frontend work is often well suited to remote collaboration because most tasks are design, integration, and review heavy. In Germany, many teams work with mixed setups, so a freelancer may join remotely and come on-site for workshops or alignment sessions. Clear communication and documentation are key.
Look for a BFF specialist who can explain trade-offs clearly and show how they reduced client complexity in past work. Good signs are clean API contracts, sensible caching choices, good error handling, and a plan for versioning. Ask how they keep the layer small, maintainable, and aligned with frontend needs.
Backend for Frontend is often weighed against a shared API, an API gateway, or direct calls from the client to backend services. Shared APIs are simpler at first, but they can become crowded and hard to change. A BFF is the better fit when each client channel needs a tailored contract.
The average hourly rate of freelancers in Germany who have used Backend for Frontend in their recent projects is 101 €, which corresponds to a daily rate of about 805 € based on an 8-hour working day.
Of the freelancers in Germany who have used Backend for Frontend in their recent projects, 89% hold at least a Bachelor's degree, 44% hold at least a Master's degree, and 11% hold a doctorate.
On average, freelancers in Germany who have used Backend for Frontend in their recent projects have 16 years of professional experience, with a single engagement typically lasting around 1.5 years.
The most common languages among freelancers in Germany who have used Backend for Frontend in their recent projects are German (85%), English (85%), and French (15%).
The most common industries among freelancers in Germany who have used Backend for Frontend in their recent projects are Information Technology (92%), Automotive (54%), and Education (54%).
The most common business areas among freelancers in Germany who have used Backend for Frontend in their recent projects are Information Technology (100%), Product Development (100%), and Quality Assurance (62%).
Main locations of FRATCH Experts, who have recently used Backend for Frontend
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 Stuttgart Dusseldorf Leipzig Dortmund Essen Bremen Dresden Hanover Nuremberg 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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Philipp Thomaschewski
FRATCH CEO
