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Adyen is a global financial technology platform providing payments, data, and financial products for enterprises like Meta, Uber, H&M, and Microsoft.
As a Senior Implementation Engineer, you will lead the design and delivery of mission-critical payment integrations for some of the world's largest global companies. You will influence how global enterprises design and operate their payment infrastructure at scale, with your work directly impacting the reliability, performance, and scalability of payment flows used by millions of end customers worldwide.
This role focuses on solving complex, high-scale technical challenges while shaping technical direction, influencing product evolution, and mentoring implementers across the organization. You will be both consultative and technical, designing and scaling highly resilient, high-performance integration architectures while raising the technical bar across the implementation organization.
Key responsibilities include:
- Delivering complex, multi-region enterprise integration projects
- Designing scalable, high-availability architectures for global merchants handling large transaction volumes
- Defining and ensuring technical standards across implementation engineering teams
- Acting as a strategic technical advisor in both pre-sales and delivery phases, shaping solutions alongside Sales and senior merchant stakeholders
- Shaping industry standards by defining how large-scale payment architectures are built and scaled
- Fostering best practices in reliability, scalability, security, and system design (e.g., idempotency, fault tolerance)
- Mentoring and supporting Implementation Engineers across the organization
- Partnering with Product and Engineering to influence platform evolution and new product design
- Managing critical escalations and ensuring stability of high-scale merchant integrations
The role is based in London with an office-first culture valuing in-person collaboration.
REQUIREMENTS:
- 12+ years of experience in software engineering or technical consulting with deep API integration experience
- Deep system design and distributed systems expertise
- Ability to operate as a solution architect and trusted advisor in complex, enterprise environments
- Experience contributing to production-level systems with pragmatic engineering trade-offs
- Comfortable engaging with senior technical and business stakeholders
- Proven ability to mentor and develop engineers
- Solid decision-making capability in complex and ambiguous environments
- Passion for raising technical excellence across teams and organizations
- Ability to thrive in environments where collaboration, accountability, and impact go hand in hand
