Senior Full Stack Engineer - Epic Games [EPDV260205]

Hatch Innovations Canada

1d•$130,000 - $160,000

About The Position

We are seeking a Senior Full Stack Engineer to build and support core purchase and payment functionality across both frontend and backend systems. You will work across React + TypeScript applications and Node.js services that drive checkout, payment processing, admin tooling, and operational workflows. This role requires strong technical ownership, comfort with distributed systems, and the ability to deliver secure, reliable features in a fast-moving environment.

Requirements

7+ years of full stack engineering experience developing production web systems.
Strong proficiency in TypeScript, React, and Node.js.
Experience designing and integrating RESTful services.
Solid SQL fundamentals with hands-on PostgreSQL experience.
Familiarity with AWS or GCP, Docker, Kubernetes, and Helm.
Experience with scalable system components such as SQS, Redis, DynamoDB, or MongoDB.
Ability to read or modify adjacent services built in Java or Grails/Groovy.
Strong communication skills and comfort operating in high-security, high-reliability environments.

Nice To Haves

Fluent in Mandarin, with strong verbal and written communication skills in English.
Background in payments, checkout flows, or wallet integrations (e.g., Apple Pay).
Experience with OAuth, token exchange, or SSO patterns.
Familiarity with edge/web infrastructure tools such as Nginx or Lua.
Exposure to monorepo workflows, build tooling improvements, or module federation.
Experience with Go services and gRPC/event-driven architectures.

Responsibilities

Build and maintain user-facing purchase and payment flows in React and TypeScript.
Develop backend capabilities in Node.js, including routing, controllers, API integration, and business logic.
Implement and support internal/admin features such as role-based access controls and operational tools.
Integrate with downstream services including payment gateways, risk/fraud systems, identity, and compliance providers.
Design, optimize, and query PostgreSQL schemas and data models.
Write and maintain automated tests for both frontend and backend code.
Improve performance, observability, and resilience for high-traffic events.
Participate in code reviews and contribute to engineering quality standards.
Work closely with cross-functional partners to deliver secure, regression-free changes.
Support deployment workflows in a Kubernetes-based environment and contribute to operational runbooks.