Senior / Staff Backend Engineer – Core Platform

Calliere•Toronto, ON

6d•Hybrid

About The Position

This is a high-visibility, high-impact engineering role focused on the core product and API layer. You will be responsible for architecting the distributed systems that process continuous data feeds from hundreds of disparate external sources. Because you are building the foundation that both internal teams and external enterprise clients rely on, you will be deeply involved in product shaping, architectural decision-making, and direct technical consulting with end-users.

Requirements

Extensive experience designing, deploying, and maintaining distributed systems and APIs at a massive scale. You know how to build for resilience and anticipate system failures.
Deep production expertise in TypeScript and Node.js.
A strong track record of taming messy, complex external APIs and turning them into reliable, clean data pipelines.
You enjoy being on implementation calls and acting as a technical authority for enterprise customers.
You thrive in ambiguous environments, can scope complex projects independently, and have the judgment to balance technical perfection with business velocity.

Nice To Haves

Experience with event-driven or serverless architectures in AWS.
Familiarity with modern asynchronous workflow orchestrators.
Exposure to JVM languages is a plus for cross-functional collaboration with data platform teams.

Responsibilities

Lead the end-to-end design and deployment of robust, scalable backend services and public-facing APIs in a cloud-native AWS environment.
Engineer fault-tolerant integration layers that reliably ingest, normalize, and process unpredictable data from a wide variety of third-party vendors.
Develop foundational platform components, including workflow orchestration, authentication, and system monitoring.
Interface directly with enterprise clients and partners to map out integration strategies, resolve complex technical roadblocks, and understand user needs.
Champion engineering standards and introduce modern, automated tooling to scale development velocity.