Senior Engineer, Backend - Protection

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Engineer, Backend – Protection based in Canada. Join an innovative global payments technology company building infrastructure that helps businesses simplify payment operations, optimize performance, and protect revenue. As a Senior Backend Engineer on the Protection team, you will design and develop scalable solutions for payment dispute management, fraud prevention, and risk automation. You will take ownership of critical backend systems, from architecture and implementation to deployment, monitoring, and continuous improvement. Working closely with Engineering and Product leadership, you will transform complex merchant challenges into reliable, automated solutions that deliver measurable business value. This is an opportunity to shape a growing technical domain, make key architectural decisions, and build integrations with payment service providers and leading fraud prevention platforms. In a fully remote, collaborative environment, your contributions will have a direct impact on product quality, customer outcomes, and the future of payment protection. Accountabilities - Backend Engineering and Architecture: Design, build, deploy, and maintain robust backend systems, taking ownership of solutions throughout their entire lifecycle. Make architectural decisions regarding service boundaries, integration patterns, and data models to ensure scalability, reliability, and maintainability. - Payment Dispute Automation: Develop automation capabilities that help merchants manage payment disputes at scale, including notifications, deadline tracking, evidence collection, and response workflows.

- Payment Service Provider Integrations: Expand dispute management coverage across the broader payment network by integrating additional payment service providers and ensuring consistent functionality across different platforms. - Fraud Prevention Integrations: Collaborate with third-party fraud prevention providers, including Riskified, Forter, Signifyd, and Sift, to build a unified experience for comparing, managing, and switching between fraud solutions. - Rules and Signals Engine: Design and implement native risk management capabilities, including velocity rules, blocklists, device fingerprinting, and configurable automation that enables merchants to manage fraud and disputes more effectively. - Cross-Functional Collaboration: Work closely with Engineering Managers, Product Managers, and other stakeholders to translate merchant challenges into practical technical solutions, prioritizing delivery, customer value, and measurable outcomes. - Product Development: Contribute to backend development as the primary focus, while supporting dashboard frontend development when needed to deliver complete product experiences. - Quality, Reliability, and Monitoring: Establish and maintain high engineering standards through testing, code reviews, monitoring, and continuous improvement. Ensure that critical dispute and fraud workflows operate reliably, minimizing errors that could result in financial losses for customers. - Technical Leadership and Mentoring: Share expertise, mentor colleagues, and raise the team's technical standards through sound engineering practices, thoughtful architectural decisions, and collaborative problem-solving. - Engineering Foundations: Help establish team conventions, operational tooling, on-call processes, and development practices as the function grows, balancing foundational improvements with frequent, high-quality product delivery. Requirements: - Proven experience owning backend systems end to end, from architecture and development through deployment, monitoring, and ongoing maintenance.