Senior Implementation Engineer

Adyen; Toronto; On-site; CAD 170,000 - 240,000; Full time

Job summary

Adyen is seeking a Senior Implementation Engineer in Toronto to lead the design and delivery of scalable payment integrations for global merchants. You will influence how large enterprises architect and operate payment infrastructure at scale, shaping technical direction and mentoring engineers across the organization.

The role focuses on solving complex technical challenges, elevating reliability and performance of payment flows used by millions. Office‑based in Toronto.

Qualifications

• 12+ years in software engineering or technical consulting with API integration experience.
• Deep system design and distributed systems expertise.
• Capable of acting as a solution architect and trusted advisor in complex, enterprise environments.
• Experience with production‑level systems and pragmatic engineering trade‑offs.
• Comfortable engaging with senior technical and business stakeholders.
• Proven ability to mentor and develop engineers.
• Strong decision‑making in complex, ambiguous settings.
• Passion for raising technical excellence across teams.

Responsibilities

• Design scalable, high‑availability architectures for global merchants.
• Define and ensure technical standards across implementation engineering teams.
• Act as a strategic technical advisor in pre‑sales and delivery phases.
• Shape industry standards by defining how large‑scale payment architectures are built and scaled.
• Foster best practices in reliability, scalability, security, and system design.
• Mentor and support Implementation Engineers across the organization.
• Partner with Product and Engineering to influence platform evolution and new product design.
• Manage critical escalations and ensure stability of high‑scale merchant integrations.

Skills

API integration

System design

Distributed systems

Solution architecture

Stakeholder engagement

Mentoring engineers

Decision making

Technical excellence

Job description

Adyen provides payments, data, and financial products in a single solution for customers like Meta, Uber, H&M, and Microsoft - making us the financial technology platform of choice. At Adyen, everything we do is engineered for ambition.

For our teams, we create an environment with opportunities for our people to succeed, backed by the culture and support to ensure they are enabled to truly own their careers. We are motivated individuals who tackle unique technical challenges at scale and solve them as a team. Together, we deliver innovative and ethical solutions that help businesses achieve their ambitions faster.

Senior Implementation Engineer

As a Senior Implementation Engineer at Adyen, 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. Your work will directly impact the reliability, performance, and scalability of payment flows used by millions of end customers worldwide.

This role is focused on solving complex, high‑scale technical challenges. You will also shape technical direction, influence product evolution, and mentor implementers across the organization.

This position is based in Toronto, and the ideal candidate is both consultative and technical.

You will design and scale highly resilient, high‑performance integration architectures while helping raise the technical bar across the implementation organization.

What you’ll do:

• Design scalable, high‑availability architectures for global merchants handling large transaction volumes
• Define and ensure technical standards across implementation engineering teams
• Act as a strategic technical advisor in both pre‑sales and delivery phases, shaping solutions alongside Sales and senior merchant stakeholders
• Shape industry standards and the broader ecosystem by defining how large‑scale payment architectures are built and scaled
• Foster best practices in reliability, scalability, security, and system design (e.g. idempotency, fault tolerance)
• Mentor and support Implementation Engineers across the organization
• Partner with Product and Engineering to influence platform evolution and new product design
• Manage critical escalations and ensure stability of high‑scale merchant integrations

Who you are:

• 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
• You thrive in environments where collaboration, accountability, and impact go hand in hand

Our Diversity, Equity and Inclusion commitments

Our unique approach is a product of our diverse perspectives. This diversity of backgrounds and cultures is essential in helping us maintain our momentum. Our business and technical challenges are unique, and we need as many different voices as possible to join us in solving them - voices like yours. No matter who you are or where you’re from, we welcome you to be your true self at Adyen.

This role is based out of our Toronto office. We are an office‑first company and value in‑person collaboration; we do not offer remote‑only roles.

The annual base salary range for this role is $170,000-$240,000 CAD.

The way we work is guided by the eight principles of the Adyen Formula.