Principal Engineer — DevX & AI

Xsolla

Montreal, CA

On-site

Who this role is best for

Aimed at senior engineers comfortable with architectural ownership in game commerce, requiring hands-on work with AI and developer-facing platforms in Montreal.

Best fit for

Principal engineers who thrive on defining technical standards for developer and AI interactions.
— “You define how developers and AI agents interact with Shop Builder's foundational capabilities”
Technical leaders with experience in game industry commerce platforms seeking hands-on architectural roles.
— “Xsolla is a global payments and commerce platform for the games industry”
Senior individual contributors comfortable with org-wide influence without direct reports.
— “You are not a manager, but your influence is org-wide”

Things to consider

Decisions made in this role will have long-term platform implications.
— “will bind the platform for years”
This role involves hands-on work with the platform's most complex components.
— “deeply hands-on with the hardest parts of that work”

How to stand out

Demonstrate past experience shaping developer experiences for extensible platforms.
— “owns the public APIs, documentation, and AI features”
Show concrete examples of setting technical standards with long-term impact.
— “which standards to set — will bind the platform for years”
Highlight architectural work on headless commerce or UI-as-data systems.
— “UI as Data, custom blocks, themes, data binding”

Pace · Fast PacedCollaboration · HighAutonomy · HighDecision Impact · CompanyLevel · Principal

Derived from job-description analysis by Serendipath's career intelligence engine.

What success looks like

technical authority
platform exposure
developer surface

Typical background

Software EngineeringBackend Development

Skills & requirements

Required

Architectural OwnershipAPI DesignDeveloper InteractionAI Integration

Preferred

Platform DevelopmentTechnical Leadership

Stack & domain

Api DesignData BindingCustom BlocksThemesCommunicationLeadershipSoftware EngineeringDevxAI

About the role

Original posting from Xsolla via Lever

ABOUT YOU
We are looking for a Principal Engineer to take architectural ownership of the agent-readable Shop Builder platform. This is the most senior individual contributor role on the DevX and AI team, and the decisions you make here — which surfaces to expose, which formats to support, which standards to set — will bind the platform for years.
You are not a manager, but your influence is org-wide. You define how developers and AI agents interact with Shop Builder's foundational capabilities: UI as Data, custom blocks, themes, data binding, catalog, payments. You are the technical authority on what the platform exposes and how, and you are deeply hands-on with the hardest parts of that work.
ABOUT US
Xsolla is a global payments and commerce platform for the games industry, used by thousands of publishers to monetize, distribute, and operate their titles worldwide. Shop Builder is Xsolla's storefront platform — used by publishers and game developers to launch and operate game shops, from straightforward catalog and webshops to fully custom storefronts built headless on our backend. For more information, visit xsolla.com.
The DevX and AI team owns the public APIs, documentation, and AI features that give developers — and AI agents — the full surface they need to customize and extend Shop Builder. This is a net-new team of seven, standing up to fill a real gap: no dedicated team has owned the developer surface end to end. That changes now.

Source: Xsolla careers (Lever)