Senior Adyen Engineer

Adyen Platform Advisory

• Guide engineering teams on Adyen Checkout API, tokenization, webhooks, dispute management, and multi-merchant account structures.
• Translate Adyen platform capabilities, constraints, and best practices into actionable implementation guidance for client developers.
• Review and validate integration architecture decisions, surfacing gaps, anti-patterns, and risks before they reach production.

Token Vault Migration Strategy

• Advise on phased migration from legacy token repository to Adyen's token vault, including re-tokenization strategy and PAN retrieval options.
• Guide PCI scope management during migration windows and coexistence-period design for parallel legacy PSP / Adyen operation.
• Support segmentation model definition (allow/deny lists, friendly-user groups, LOB rollout sequencing).

Integration Design & Architecture Review

• Review and advise on Adyen Checkout API, webhook event processing, multi-brand merchant hierarchy, and downstream billing system integration impacts.
• Assist in designing federated micro-frontend integration with Adyen Drop-In or custom hosted components.
• Review API and back-end abstraction patterns for the Payment Services layer, including token flows, 3DS metadata, fraud signals, and refund/chargeback handling.
• Support Pay-By-Link design, IVR payment capture patterns, and OTCC/PACC flow validation.
• Review front-end, back-end, PSP alignment across all lines of business and channels.

Settlement & Reconciliation Advisory

• Advise on the architectural shift from batch-close/next-day settlement to Adyen's configurable sales-day payout model with inline fee deduction.
• Help the client design reconciliation processes, reporting pipelines, and billing system adaptations required by this model change.
• Support coexistence-period reconciliation design and mixed-state routing validation.

Adyen Configuration & Environment Management

• Provide guidance on Adyen merchant hierarchy setup and merchant account structure for multi-brand environments.
• Advise on sandbox, pilot, and production environment promotion strategy.
• Support Adyen Customer Area configuration, WIAM/SSO integration, and RBAC structure for client internal teams.

PSP Liaison Support

• Serve as the technical bridge between the client, SI teams, and Adyen's technical resources.
• Clarify requirements, validate API versioning, confirm webhook configuration, and manage integration backlog alignment between program teams and Adyen.
• Support the client in engaging Adyen on escalations, environment issues, and roadmap considerations.

Risk Identification & Proactive Guidance

• Proactively surface Adyen-specific risks and integration complexities, including:
  • 3DS configuration and step-up authentication impacts on customer experience
  • Fraud rule migration and tuning during the coexistence period
  • Canadian payment method considerations (Interac, Visa Debit flows)
  • Webhook reliability, idempotency, and retry edge cases
  • PCI boundary impacts of token vault migration
• Prepare concise risk documentation and recommendations for program leadership and steering committees.

Testing & Validation Advisory

• Support the QA team with Adyen-specific test scenario design, including OTCC, tokenization, 3DS, dispute, and Pay-By-Link flows.
• Advise on sandbox environment configuration and production readiness criteria for payment flows.
• Assist with migration-specific test plans and mixed-state (legacy + PSP) regression scenario