Lead API Integration Engineer (Payments)

Adyen; Paris; On-site; EUR 80,000 - 120,000; Full time

Job summary

Adyen in Paris is seeking an experienced Implementation Engineer to design, integrate, and scale how merchants use Adyen’s payment platform. You will own projects from solution design to successful go-live, working with large enterprise customers.

The role requires strong API and integration expertise, collaboration across Sales, Product, Engineering and Project Management, and fluency in French and English.

Qualifications

• 6+ years of experience in technical consulting, integrations, or software engineering.
• Deep understanding of APIs and experience working across frontend and backend systems.
• Fluent in French and English.

Responsibilities

• Deliver end-to-end implementation projects from solution design through to go-live.
• Design and help merchants build high-performance, API-based integrations for complex systems.
• Partner closely with Sales during pre-sales to shape solutions, assess feasibility, and support technical discussions with prospective merchants
• Act as the primary technical partner for merchants, guiding architecture and integration decisions
• Build alignment across Product, Engineering, Sales, and Project Management to drive the best outcomes for merchants
• Guide merchants through technical design decisions, testing, and production readiness
• Improve delivery quality by sharing best practices and helping elevate team knowledge
• Support a culture of growth by sharing knowledge and helping others unblock and succeed
• Act as the voice of the merchant internally, translating customer needs and pain points into actionable insights for Product and Engineering
• Advocate for improvements in Adyen’s products and integration experience based on recurring merchant challenges and feedback

Skills

APIs

Integrations

Technical consulting

Frontend & Backend

French & English

Job description

Adyen in Paris is seeking an experienced Implementation Engineer to design, integrate, and scale how merchants use Adyen’s payment platform. You will own projects from solution design to successful go-live, working with large enterprise customers.

The role requires strong API and integration expertise, collaboration across Sales, Product, Engineering and Project Management, and fluency in French and English.