Adyen Experts in Germany
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Meet FRATCH Experts in Germany, who have recently used Adyen
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.
Steffen Seitz
Last position:
Senior Technical PM, CRM Core Experience & AI at Propstack GmbH (Scout24 S.E.)
- Built a JTBD-based prioritization framework for 3,000+ accumulated feature requests, identified 27 broker jobs, validated 8 through 25 user interviews, and used the resulting job map as a live prioritization filter for all incoming channels (Upvoty, CSAT, consulting tickets).
- Responsible for the Scout24 Lighthouse initiative: Document Intelligence with full RAG architecture (semantic chunking, bge-m3 embeddings, pgvector, BM25+Dense hybrid retrieval).
- Reduced lead time of customer feature requests to 3.1 days through code analysis, ticket specification, and independent implementation using a coding agent (Codex).
- Developed an LLM-based support agent (GPT-4o mini, Codex-generated merge requests) that reduced 3rd-level escalations from 40% to 5% of all monthly tickets.
- Integrated six partners through technical coordination, specification, backlog and release management, and led seven full stack developers.
- Eliminated regulatory exposure for brokers in six weeks through risk analysis (BGH ruling on distance selling/GDPR), new audit features, and coordination with legal and data protection officers.
Reinhold Mathmann
Last position:
Business Analyst, Proxy PO, Epic Owner, Quality Assurance at Digital Charging Solutions
- Design and supervise implementation, testing and rollout of end-to-end processes and system integrations (frontend & backend)
- Integrate with OEMs (Daimler, BMW/MINI) and CPOs (Ionity and others)
- Introduce CPO discount packages with lifecycle processes
- Implement consenting process for GTC & tariff updates and marketing opt-ins via SAP Emarsys
- Automate blocking/unblocking of customers and integrate MS Dynamics CRM and proprietary 3rd level tool
- Coordinate migration and go-live of new fleet portal
- Migrate PSP from Datatrans to Adyen (credit card, PayPal) and integrate SEPA/BACS with Adyen via webhooks
- Support and enhance OpenInformer billing engine: Oracle→PostgreSQL migration, PostgreSQL upgrade, regression test suite, performance troubleshooting, invoice relocation to Azure Storage
- Identify and analyze fraud cases and implement countermeasures
- Provide problem management, incident support and hypercare after major rollouts
Harald Schraut
Last position:
IT Product Owner – eCommerce – Mechanical Engineering at Self-employed
- Responsible for further developing the web shop with focus on stability, security, and scalability
- Support the business in creating and evaluating requirements
- Technology: SAP Commerce Cloud, Adobe Experience Manager CMS (AEM), Solr Search, Adyen Payment Service Provider
- Tools: Confluence, Jira, Miro, ServiceNow
Michael Henze
Last position:
Agile Coach at BMW AG (Freelance)
Workshop preparation and facilitation for the BMW digital team to plan the Matko Cockpit product delivery for the second half of the year.
Team building and preparation of the Matko Cockpit product delivery roadmap.
Stakeholder alignment and workshop design.
Managing the workshop agenda, identifying focus topics, and topic prioritization.
Review of team sentiment and capturing impressions.
Identification, summary, and documentation of action items.
Methodologies used: Ice Breaker, Brain Storming, Story Points, Magic Estimation, Hypothesis Statement, Problem Statement, Dot Voting, and Parking Lot.
Johannes Schaeffer
Last position:
CFO at Genesis Mining Ltd
- Built the entire accounting function from organizing bank and wallet accounts to preparing CEO statements
- Prepared group financial statements and coordinated with authorities
- Advised shareholders in Dubai
- Recommended reorganization of the group
- Managed liquidation after spin-off
- Built and managed the finance team
- Created a project plan for HK statements
- Collected bank and wallet accounts (five-figure number, millions of records)
- Structured and processed all legal transactions (technology agreements, power plant acquisitions, SPVs, spin-off, investment/disinvestment structures, profit sharing)
- Set up chart of accounts by profit centers
- Built and managed fixed assets
- Introduced accounting in the US system QuickBooks and posted all entries (millions)
- Cleared accounts
- Handled intercompany reconciliations with major subsidiaries including permanent establishments
- Reconciled all transactions (B2B, B2C, self-mining, wallets/exchanges/credit cards)
- Negotiated settlements of receivables (double-digit millions)
- Engaged auditors and tax advisors
Results:
- Established the accounting function with all associated subsystems and built the team
- Prepared group and subsidiary financial statements as well as tax returns and coordinated with authorities
- Coordinated auditors
- Advised shareholders in Dubai
- Recommended group reorganization
- Managed liquidation after spin-off
Armen Markarian
Last position:
CTO/CPO Platform & Technology at Green Mobility Holding
- Overall responsibility for platform transformation across ERP, CRM, PIM, and AI-driven process automation
- ERP transformation: Implementing and migrating to Microsoft Dynamics 365 Business Central
- CRM & growth stack: Implementing HubSpot as the central CRM and a platform for lead and marketing automation
- Product data & commerce enablement: Introducing an ePIM to scale category management and digital commerce processes
- AI-driven process automation: Designing and implementing agent-based AI workflows to automate processes in business services, accounting, tender management, and marketing
- Building a scalable platform organization including product development, DevOps, UX, cloud engineering, and corporate IT
- Implementing modern product and portfolio governance (e.g., OKRs, portfolio boards, value-based roadmaps) to manage technology-driven initiatives
- Harmonizing heterogeneous system landscapes and transforming them into a modular, scalable platform architecture (ERP, CRM, PIM, integrated customer journeys)
- Coaching and developing product owners, tech leads, delivery managers, and UX teams to build a scalable product organization
Gwen Glaser
Last position:
Senior Ruby on Rails & DevOps Developer at Sapiens
Further development of a software solution for managing test requests and test notifications according to §106d SGB V for the Hamburg Association of Statutory Health Insurance Physicians.
- Developed numerous features, performance optimizations, refactoring, error analysis
- Refactored the dev container setup
- Optimized the GitLab CI build pipeline
- Contributed optimizations to the team workflow
Zacharias Creutznacher
Last position:
CTO at Laracraft
- Architecture and conception
- Development at Cynapsis Interactive (Laravel, Filament, Google Ads API)
- Analyze and monitoring tool for z-optimations GmbH (Laravel, Blade)
- Development at ProgressMaker (Laravel, REST-API)
- Development of a data warehouse at ProgressMaker (Laravel)
- Development of SimpleStats.io (Laravel, Vue, Inertia, Tailwindcss)
- Development of Validation for Laravel (Laravel, Vue, Inertia, Tailwindcss)
- Development of multiple open-source projects (laravel-date-scopes, laravel-schema-rules, laravel-xhprof)
Ingo Schaffer
Last position:
Interim Department Head / Director IT / Business Consultant at REWE-Digital GmbH
Interim takeover, further development, and management of the Customer Relations and Sales domain
Responsibility for ~150 employees (3 Chief Product Owners, 21 Product Owners, 2 Engineering Managers, Agile Coaches, Solution Architects, front-end and back-end developers, team assistants)
Budget responsibility: approx. 40 million euros
Support during the split of the central retail business unit into Procurement Solutions and Customer Relations and Sales
Reorganization and annual planning based on budget, capacity, FTE, PT, and management of the CRS department
Ensuring strategic projects in an agile product organization (e.g. REWE Bonus, in-house marketing, AI-based projects, data warehouse migration to Snowflake, retail media)
Reporting directly to management and the board
Jannis Andrae
Last position:
AI Trainer for cross-functional business owner tasks at micro1
Daniel Wolff
Last position:
Sabbatical at Sabbatical
- Travel and Gen AI trainings
Georg Warth
Last position:
Project Manager / Product Owner at Freelance
- Project management and product owner for ERP migration to Odoo
- Designed a central single sign-on system (AWS Cognito) for all digital portals
- Coordinated complex system integrations (SAP, payment providers) with technical and business stakeholders
- Budget responsibility and resource management
Discover over 15,000 top freelancers
Statistics of experts using Adyen
Aggregated from the professional profiles of matched freelancers.
Experience
27 years
Position duration
2.3 years
Positions per freelancer
12
Top business areas
Information Technology, Product Development, Project Management
Top industries
Information Technology, Banking and Finance, Retail
Certification focus areas
Information Technology, Project Management, Product Development
Bachelor's degree or higher
88%
Master's degree or higher
63%
Doctorate
13%
Certifications per freelancer
2
Most common languages
German, English, French
Speak two or more languages
100%
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 Adyen
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
Payment flows
Adyen is used to take payments across web, mobile, and in-store channels. It helps companies accept cards, wallets, local payment methods, and bank-based options through one payment setup. Strong professionals shape the flow from checkout to capture, refund, and reconciliation.
Core work
Adyen specialists are often brought in for:
- Checkout integration and payment method selection
- API work for payment, capture, cancel, and refund flows
- Subscription and recurring payment setup
- Webhooks, event handling, and payment status logic
- Reporting, reconciliation, and dispute handling
Ecosystem
The work often touches Adyen API, Adyen Checkout, webhooks, and merchant account settings. In larger stacks, professionals connect it with ERP, CRM, order systems, fraud checks, and analytics. Good experts know how to keep payment logic clean across services without breaking the customer journey.
When to hire
Companies usually bring in freelance Adyen expertise when a launch is blocked, a migration is messy, or payment failures are hard to trace. It also helps when teams need support for Germany-specific payment preferences or local operational needs. Freelancers can join remotely, or on-site when payment and finance teams need close coordination.
What strong experts do
Strong professionals understand the full payment lifecycle, not just the checkout screen. They read logs, trace webhook timing, test edge cases, and verify that refunds, retries, and settlement states line up. They also work carefully with security, tokenization, and role-based access.
Where it fits
Adyen is common in e-commerce, retail, marketplaces, travel, and subscription businesses. It is also used by companies that need one payment layer across online and physical channels. In Germany, teams often value specialists who can work clearly with product, finance, and operations stakeholders in English or German.
Frequently asked questions
What clients ask us most about Adyen — answered in short.
Adyen is used to accept and manage payments across online, mobile, and in-store channels. It covers checkout, authorization, capture, refunds, recurring payments, and payment-method routing in one system. Companies use it when they want a single payment layer instead of separate tools for each channel.
Adyen is often chosen for broader enterprise payment control, especially when online and in-person payments need to sit in one stack. Stripe is often weighed for developer-friendly online payment flows, while PayPal can matter more as a wallet option for customers. The right choice depends on channels, markets, and the amount of control you need over payment logic.
A strong Adyen specialist understands APIs, webhooks, payment states, and common failure paths. They should also know how to work with order management, fraud tooling, reconciliation, and settlement reporting. Clear debugging skills matter because many payment issues only show up at the edge cases.
With Adyen, you do not need every detail fixed, but you should know the payment methods, countries, channels, and backend systems involved. A good specialist can help shape the technical approach when the current setup is still moving. The clearer the payment flow and business rules, the faster the work starts.
Yes, Adyen work is often done remotely for teams in Germany. It helps if the specialist can align with local stakeholders in English and, when needed, German. On-site sessions are useful when finance, product, and operations teams need to review payment flows together.
A company usually needs Adyen expertise when payments fail without a clear reason, webhook handling is unreliable, or a migration is getting risky. It is also common during new market launches, subscription changes, or a move from a single-channel setup to an omnichannel one. If refunds, retries, or reconciliation are messy, bring in help early.
Look for someone who can explain the payment flow clearly, not just list the product names they know. A solid Adyen professional has handled real checkout integrations, webhook logic, and dispute or refund workflows. Good signs are careful testing habits, clean documentation, and practical answers about edge cases.
Adyen matters well beyond checkout. It affects support, reconciliation, finance reporting, fraud review, and how quickly issues can be traced and resolved. The best specialists understand both the customer-facing payment flow and the operational side that follows it.
The average hourly rate of freelancers in Germany who have used Adyen in their recent projects is 117 €, which corresponds to a daily rate of about 937 € based on an 8-hour working day.
Of the freelancers in Germany who have used Adyen in their recent projects, 88% hold at least a Bachelor's degree, 63% hold at least a Master's degree, and 13% hold a doctorate.
On average, freelancers in Germany who have used Adyen in their recent projects have 27 years of professional experience, with a single engagement typically lasting around 2.3 years.
The most common languages among freelancers in Germany who have used Adyen in their recent projects are German (100%), English (100%), and French (38%).
The most common industries among freelancers in Germany who have used Adyen in their recent projects are Information Technology (85%), Banking and Finance (54%), and Retail (54%).
The most common business areas among freelancers in Germany who have used Adyen in their recent projects are Information Technology (100%), Product Development (92%), and Project Management (85%).
Main locations of FRATCH Experts, who have recently used Adyen
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
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Philipp Thomaschewski
FRATCH CEO
