Senior Engineer (API)

Xero•Vancouver, BC

2d•Hybrid

About The Position

As a Senior Engineer and valuable individual contributor in our Product Platform division, you will lead the delivery of high-impact, customer-focused API and SDK solutions. You will treat APIs as first-class products, balancing external developer experience with internal platform consistency to ensure our interfaces are reliable, scalable, and a joy to integrate with. Your work will be a key enabler for AI and agent-driven automation across accounting workflows, providing the foundation for intelligent product experiences. By designing safe and composable API surfaces, you will help small businesses become more efficient and empower them with big business technology.

Requirements

Deep knowledge of backend or platform development within large-scale distributed systems.
Experience designing and maintaining external or internal platform APIs and SDKs.
Curiosity about AI-powered products.
Ability to design interfaces that allow agents to safely orchestrate complex accounting workflows.
Ability to navigate obstacles and build alignment with product and design teams through clear communication.

Nice To Haves

Experience with open source graph technologies powered by gRPC.
Experience with backend services built in modern languages like C#, Go, or Java.
Experience with CI/CD and production runtimes.
Experience with the Supergraph model.

Responsibilities

Lead the delivery of high-impact, customer-focused API and SDK solutions.
Treat APIs as first-class products, balancing external developer experience with internal platform consistency.
Design safe and composable API surfaces to enable AI and agent-driven automation.
Help deliver across core accounting and tax domains using the Supergraph model.
Replace or front expensive back-channel endpoints with coherent, strongly-typed interfaces and stable contracts.
Coach and mentor others, sharing knowledge to lift team performance and foster technical growth.
Champion engineering standards like automated testing and quality reviews.
Build alignment with product and design teams through clear communication.