GraphQL Experts in Frankfurt
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Meet FRATCH Experts in Frankfurt, who have recently used GraphQL
Ali Aminian
Last position:
Platform Engineer & Software Architect at Yatta GmbH
- Architected the Yatta Integration Layer – a config-driven integration platform on Java 25, Spring Boot 4 (WebFlux), Temporal, gRPC and Kafka, enabling new third-party integrations (e.g. AVS fulfillment) via declarative JSON configs with zero code changes.
- Designed and implemented Tink integration with 0Auth IBAN verification to enhance fraud prevention and account validation workflows with Adyen payByBank.
- Architected and implemented an OpenFGA-based authorization model for centralized management of users, groups, and fine-grained access control in the vendor portal.
- Architected and led delivery of the Yatta API Gateway platform using GraphQL Federation, providing a unified enterprise API layer across distributed microservices with centralized authentication, authorization and request orchestration.
- Replaced NGINX + NLB with Istio service mesh and AWS ALB; rolled out WAF, OAuth (Cognito), IP whitelisting and RBAC across environments.
- Migrated CDC from Confluent Cloud connectors to a self-hosted Kafka Connect + Debezium stack, reducing operational cost by ~80% across multiple environments.
- Implemented the Transactional Outbox pattern with Debezium for reliable, exactly-once event publishing to Kafka with Avro and Schema Registry.
- Migrated dunning/payment-recovery workflows from Airflow to Temporal, achieving 99.9% reliability for settlement handling.
- Optimised Apache Airflow with deferrable sensors to handle 1000+ concurrent DAG runs without scaling the worker pool.
- Refactored a monolithic Terraform codebase into 3 modular projects, cutting deployment time by ~45%.
- Stood up full observability with OpenTelemetry, Tempo, Prometheus and Loki; automated dev/staging/prod with ArgoCD, Image Updater and Helm.
- Collaborated with product, operations and engineering stakeholders to define scalable platform architecture and integration standards aligned with long-term business and operational goals.
Saqib Javed
Last position:
AI Developer / AI Engineer (Lead) at KOM4TEC GmbH
- Conceptual design and implementation of modular AI assistants for sales and business processes in the Microsoft ecosystem (Agentic AI, Copilot extensions)
- Frontend architecture and development with React + TypeScript for embedded chat and assistant surfaces (streaming UI, hooks, React Query, OpenAPI clients)
- Enterprise-level agent development: reusable skill/agent library, MCP server, review and compliance gates
- LLM integration into the user experience: Anthropic (Claude), OpenAI, tool use, RAG pipelines, prompt engineering, guardrails
- Architecture and code review consulting as well as mentoring in the AI development team
- Integration with Microsoft Graph, Power Platform, and Azure services
- Technologies: React, TypeScript, Anthropic Claude, OpenAI, MCP, RAG, Microsoft Graph, Power Platform, Azure
Andreas Flegel
Last position:
CRM Consultant, BI Expert, Project Manager, Coach at start-up / dermatology and wellness products
- Analyze business situation: stagnation of sales, small recurring customer rate, huge number of visitors but little conversion rate, average order value does not increase, no customer segmentation or targeting, performance marketing approach fails to acquire the right customer
- Advise on sales and marketing strategies and improve operations; agile coach advice with key business strategy using Scrum and Kanban
- Acquire key requirements and derive user stories for e-shop product owner development and customer data analysis
- Develop comprehensive 360 degree customer data model using Shopify and Amazon; implement data feeds from more than 10 systems (Klaviyo, Typeform)
- Develop meaningful ad-hoc data analysis detailing aspects of Triple Whale customer behavior using standard e-commerce KPIs such as AOV, Google Analytics, churn, conversion and abandoned checkout rates, ROAS, CPA, CPC; tools: SQL, Power Query
- Derive clear and data-driven customer segmentation and targeting; ETL processes and Power BI
- Introduce and feed new content agency with customer insights using GraphQL and Postman; improve messages, frequency, and targeted audience; Microsoft Planner
- Provide crystal clear data proof to steer new performance marketing approach
- Develop standard business operations reporting
Svyetoslav Pidgornyy
Last position:
CTO at Skar Audio
- Main developer in an online retail company
- Built an online shop using the Next.JS React framework
- Integrated the site with dozens of third-party apps using REST and GraphQL APIs
- Built a backend for order management, warehouse management (with iPhone app), and supply management
- Automated invoicing and finances with QuickBooks
Werner Keil
Last position:
Test Coordinator, Designer and Engineer at IBM
- Testing the SekIDP and related components
- Test design, execution and automation, microservices, GitHub Enterprise, Eclipse, Katalon Test Platform, API Testing, Confluence 8, JIRA/Xray, Draw.io, Swagger/OpenAPI, Postman, Docker, Kubernetes, Podman, PuTTY, E-Health, Telematik, Gematik standards, EPA, E-Rezept, sektoraler IDP, encryption, XaDES, PaDES, DICOM, HL7, FHIR, IHE, ICD, SSO, SAML/Shibboleth, OAuth, smartcards, JWT, two factor authentication Android and iOS, Wireshark, BrowserStack, Cypress, gRPC, REST, SOAP, WS-Security, Linux Shell, PowerShell, SSH/SSL, Java, Kotlin, Cordova, Gradle, Groovy, Python, TypeScript
Marie-Josée Mache
Last position:
Java Engineer / Developer at Davaso GmbH
- Involved in the full development lifecycle, including design, coding, testing, and deployment of Java-based applications.
- Built and maintained high-performance RESTful APIs and microservices, ensuring scalability and reliable data exchange.
- Practiced code reviews, used version control systems (e.g., Git), and collaborated closely with cross-functional teams to deliver robust software solutions.
- Implemented, managed, and optimized complex business logic and decision-making processes using the Drools Rules Engine, leveraging DRL (Drools Rule Language) for dynamic configuration.
- Developed software solutions for a major service provider in the healthcare insurance sector, specifically focusing on claims processing and reconciliation logic to ensure cost-effective reimbursement for health funds.
Illia S
Last position:
Front-End Developer at Tangram Internet Services GmbH
- IAUP (Interregional Academy of Personnel Management) commissioned the development of a distance learning system for its secondary school subdivision.
- Development of the website [link]
- Development of a billing system and integration with various payment systems
- Development of a distance learning system based on the open source Moodle solution
- Integration of the distance learning system into the user office on the [link] website
- Front-end: Vue.js v2, Nuxt.js, JavaScript, HTML, CSS, SCSS
- Back-end: LAMP (Linux, Apache, MySQL, PHP), PHP Framework Laravel, Redis, Swagger, MySQL 8.x, PayPal API
- DevOps: Docker, CI/CD, GIT
Leonid Ravin
Last position:
IT Business Analyst / Requirements Engineer at S-Payment GmbH / Sparkasse (DSV-Gruppe)
- Business analysis of payments for the introduction of Wero EPI in Germany.
- Analysis and optimization of merchant processes in the context of acquiring and issuing.
- Analysis of interfaces for instant payments.
- Analysis of SCT-Inst processes, settlement mechanisms and reporting processes.
- Identification and clarification of gaps in merchant processes.
- Analysis and documentation of clearing and settlement processes.
- OSPlus process analysis and documentation.
- Coordination and alignment with scheme management as well as various payment service providers and financial institutions on merchant processes.
- Preparation and follow-up as well as active participation in EPI meetings on technical coordination and regulatory topics in payments, including content familiarization and prioritization.
- Preparation and documentation of project and steering committees in the EPI environment.
- Creation of status reports for the subproject.
- Maintenance and structuring of Confluence pages for project documentation.
- Coordination and alignment with the issuing teams on individual customer processes as well as aligning with bank processes and acquirer processes in the Wero environment.
- Communication with payment service providers regarding merchant and bank processes in the Wero environment.
- Organizational support for project management in special tasks in the EPI and Wero environment.
- Digital filing and documentation in Confluence and Microsoft Teams.
- Planning, implementation and tracking of work packages and steps.
- Quality assurance and project control.
- Consulting on IT strategy, IT architecture and interface management in the EPI and Wero environment.
- Technical environment: Jira, Confluence, XML, JSON, MS Office (Word, Excel, Teams, PowerPoint), SharePoint, Draw.io, Innovator, 3rd-level support, ITIL, creation and updating of software documentation, interface management, OSPlus, Scrum, KYC, payment, European Payments Initiative (EPI), Wero, Microsoft Loop, Instant Payments, SCT-Inst.
Jonas Walter
Last position:
Fullstack Developer at Soulven Agency
- Working for customer and internal projects ranging from B2C, B2B applications
- Development and maintenance of customer-facing and internal applications across B2C and B2B domains
- Responsibility for technical direction, architectural decisions and code quality standards
- Design and implementation of scalable application architectures, including modular frontend and service-oriented backend structures
- Conceptual planning and technical execution of the agency website relaunch in Angular
- Rapid prototyping and MVP development for B2B customer projects in the pharmaceutical sector with Vue.js
- Creation of first MVPs for 3D rendering–based products, including real-time visualization and interactive experiences
- Strong UX/UI expertise with a focus on gamification, user engagement and conversion-driven interfaces
- Close collaboration with product management, design and stakeholders to translate business requirements into technical solutions
- Agile software development using Scrum, including sprint planning, reviews and retrospectives, supported by Azure DevOps
- Full-stack development using React, Angular, TypeScript, Vue.js, HTML5, CSS3/SCSS, C#, .NET, Node.js, RESTful APIs, Unity, Azure DevOps, Git and CI/CD pipelines
Neha Khare
Last position:
Team Lead | Senior Java Developer at Capgemini
- Tech Stack: Java 17, Spring Boot, Microservices, REST, GraphQL, Spring AI, Jenkins, Docker, Git/Bitbucket, JUnit, Splunk
- Led a team of 6 to deliver policy, claims, and onboarding modules serving 50k+ users, maintaining 99.9% uptime
- Cut release cycle time by 35–40% by automating CI/CD with Jenkins and Docker
- Implemented trunk-based branching in Git/Bitbucket
- Integrated 10+ REST APIs and streamlined customer workflows, boosting process automation by 40%
- Increased system stability with proactive Splunk alerting and runbooks, reducing outages by ~25%
- Driven quality with JUnit tests (92% coverage) and code reviews; enforced standards with static checks such as SonarQube
Krunal Patel
Last position:
Technical Project Manager at Moon Technolabs Pvt. Ltd.
- Manage end-to-end delivery of software projects across healthcare, gaming, and communication domains.
- Serve as Project Manager, Product Owner, and Scrum Master for multiple Agile teams.
- Oversee scope definition, sprint execution, and delivery tracking using Jira and Confluence.
- Design technical architectures and API strategies integrating Twilio, CRMs, and VoIP systems.
- Lead AI/ML projects implementing recommendation engines and automation workflows.
- Support pre-sales with effort estimation, technical documentation, and proposal reviews.
Muhammad Arslan
Last position:
Sr. Software Engineer at Hoja AI
- Built scalable Flutter apps (mobile & web) using BLOC and Clean Architecture, improving app performance and maintainability.
- Delivered advanced AI & agentic AI features with real-time communication and personalized user flows.
- Developed backend services in Ktor (Kotlin) and ensured quality via testing, CI/CD, code reviews, and Scrum practices.
Roman Krivtsov
Last position:
Senior Data Engineer / Cloud Architect at DB Systel
- Development of a central billing app for cloud costs at DB
- AWS
- Python
- AWS CDK
- RDS
- Spark (PySpark)
- Glue
- Lambda
- CI/CD (GitLab)
- React/Typescript
- data optimization
- Scrum
Michael Simann
Last position:
Business Analyst & Product Owner at Deutsche Vermögensberatung (DVAG)
- Product Owner for stakeholder management, backlog prioritization and sprint organization (refinements, planning, testing, release) in agile team (8 developers, 2 testers)
- Scaled according to SAFe by introducing sub-teams and leading retrospectives for team development
- Developed central DVAG commission system from batch to near-real-time processing (Kafka) including data migration and structure hierarchy
- Specified functional, technical and quality requirements in close coordination with lead developers
- Modeled complex business processes (BPMN) and interfaces (Kafka, REST, GraphQL)
- Supported authentication (Keycloak), frontend development (Angular) and test automation (CI/CD, CDCT)
- Accompanied cloud migration of microservices to Azure; created workbooks, dashboards and KQL queries for system monitoring
- Analyzed and optimized database systems (CosmosDB, MongoDB, SQL) and reported via Power BI to manage commission competitions
- Applied industry expertise in sales and structured sales model including overseeing financial products to market release
Karsten Gerigk
Last position:
Software Development at Siemens Mobility GmbH
- Maintenance and further development of several existing projects in the "AI-powered transportation" sector, based on React, REST-like APIs (Spring, Python) and various design libraries
- Responsible in the project for build processes, JavaScript development, architecture, coordination and communication with the design team
- Agile software development (Scrum, Kanban)
- Technologies: React, TypeScript, Ant Design, Node.js, Yarn, Vite, i18n, Postgres, Keycloak, Jest, Cypress, Storybook
- Tools: IntelliJ, Git, GitLab CI, Docker, Confluence, Jira
Discover over 15,000 top freelancers
Statistics of experts using GraphQL
Aggregated from the professional profiles of matched freelancers.
Experience
16 years
Position duration
2.1 years (Germany: 2.7 years)
Positions per freelancer
12 (Germany: 11)
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Banking and Finance, Healthcare
Certification focus areas
Information Technology, Project Management, Product Development
Bachelor's degree or higher
85% (Germany: 88%)
Master's degree or higher
31% (Germany: 44%)
Doctorate
8% (Germany: 3%)
Certifications per freelancer
2
Most common languages
German, English, Russian
Speak two or more languages
100% (Germany: 98%)
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 Frankfurt 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 Frankfurt using GraphQL
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
GraphQL at a glance
GraphQL is a query language and execution layer for APIs. It lets client apps ask for exactly the data they need, which helps reduce overfetching and underfetching. Companies use it for web products, mobile apps, partner APIs, and internal tools.
Where it fits
It is often chosen when many clients need the same backend data in different shapes. Teams use it to unify REST services, databases, and third-party systems behind one schema.
- API layers for product teams
- Mobile and web data delivery
- Federation across services
- Partner-facing developer portals
Tooling and ecosystem
A strong GraphQL setup usually includes schema design, resolvers, caching, and query validation. Common surrounding tools include Apollo, Relay, GraphiQL, and server libraries in Node.js, Java, Go, or .NET.
What good experts do
Strong professionals think about data shape, security, and long-term schema change. They write clear type definitions, keep resolvers lean, and handle pagination, batching, and authorization without making the API hard to use.
When to bring in freelancers
Companies often need freelance support when an API is being redesigned, a REST layer is being wrapped, or performance issues appear. In Frankfurt, this is especially useful for finance, logistics, and SaaS teams that need clean API contracts and smooth collaboration across remote and local specialists.
Signs you need help
- Frontend teams ask for different data than the backend returns
- Multiple services need one clean API layer
- Schema changes break clients too often
- Query performance or access control is unclear
- Your team needs help with GraphQL Federation or Apollo Server
Frequently asked questions
What clients ask us most about GraphQL — answered in short.
GraphQL is used to build API layers that give client apps more control over the data they receive. It is common in web and mobile products, partner integrations, and internal tools where different screens need different fields from the same systems.
GraphQL is often chosen when one REST endpoint set becomes too rigid for many client needs. REST can be simpler for basic services, but GraphQL gives clients a single schema and more precise queries. That makes it useful when teams want to reduce extra requests and keep response shapes consistent.
GraphQL work often comes with schema design, resolvers, authentication, pagination, batching, and caching. Many projects also use Apollo, Relay, GraphiQL, and server frameworks in Node.js, Java, Go, or .NET. A strong specialist knows how to keep the API stable while services change behind it.
GraphQL projects vary a lot, but even a small one benefits from someone who has shipped schemas and handled client queries before. If the work includes Federation, complex authorization, or migration from REST, you want a specialist who has seen those patterns in production. Simple proof-of-concept work needs less depth than a shared enterprise API.
GraphQL expertise is useful when a team is introducing a new API layer, cleaning up an existing schema, or fixing slow and confusing queries. Freelancers are also a good fit when internal specialists are busy or when a short, focused engagement is enough to unblock a release.
GraphQL work fits both models well because most tasks can be reviewed through schema files, query examples, and API discussions. In Frankfurt, some teams prefer on-site workshops for early architecture decisions, then continue remotely for implementation and review. Clear communication matters more than location.
GraphQL quality shows in a schema that is easy to read, predictable to use, and hard to break. Look for clean type design, sensible error handling, careful authorization, and a plan for versioning or schema evolution. Good specialists also explain trade-offs instead of adding fields or resolvers without a reason.
GraphQL is the query language and execution model, while Apollo is a common ecosystem around it. Federation is a way to compose multiple GraphQL services into one schema. People often search for Apollo GraphQL or GraphQL Federation, but they refer to parts of the wider stack rather than the core technology itself.
The average hourly rate of freelancers in Frankfurt, Germany who have used GraphQL in their recent projects is 92 €, which corresponds to a daily rate of about 734 € based on an 8-hour working day.
Of the freelancers in Frankfurt, Germany who have used GraphQL in their recent projects, 85% hold at least a Bachelor's degree, 31% hold at least a Master's degree, and 8% hold a doctorate.
On average, freelancers in Frankfurt, Germany who have used GraphQL in their recent projects have 16 years of professional experience, with a single engagement typically lasting around 2.1 years.
The most common languages among freelancers in Frankfurt, Germany who have used GraphQL in their recent projects are German (100%), English (100%), and Russian (22%).
The most common industries among freelancers in Frankfurt, Germany who have used GraphQL in their recent projects are Information Technology (100%), Banking and Finance (65%), and Healthcare (52%).
The most common business areas among freelancers in Frankfurt, Germany who have used GraphQL in their recent projects are Information Technology (100%), Product Development (91%), and Quality Assurance (57%).
Main locations of FRATCH Experts, who have recently used GraphQL
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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