Senior Software Engineer, Canada

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Design, build, and evolve backend systems that power data-heavy production products such as market feeds, crawlers, APIs, and data pipelines.
Take ownership of major backend initiatives across their full lifecycle — design, development and implementation, rollout, and long-term maintenance and support.
Write and maintain scalable APIs and backend services used at meaningful scale.
Lead architectural improvements and redesigns of existing systems to improve reliability, performance, and maintainability.
Break complex designs into executable components and delegate effectively when working with other engineers.
Collaborate with leadership and senior engineers on technical direction.
Mentor developers through code reviews, design discussions, and best practices.

5+ years of professional software engineering or architectural experience (or equivalent depth).
A proven track record of building backend systems from scratch, launching them into production, and supporting and evolving them over time.
Experience designing and operating APIs or backend systems at scale.
Strong systems thinking — you can reason about performance, failure modes, scaling, and long-term maintainability.
Experience in startup or startup-like environments, or owning major systems within larger companies.
Comfort working autonomously and making high-impact technical decisions.
Familiarity with AI-assisted development tools (e.g., Copilot, ChatGPT, code-generation and review tools) to support productivity and code quality.

Python experience.
Experience redesigning or evolving legacy systems.
Background in data-heavy systems (crawlers, feeds, ingestion pipelines, analytics backends).
Infrastructure or scaling experience (high-throughput systems, reliability, performance tuning).
Experience mentoring mid-level and senior developers.