Senior Staff Back End Software Engineer

Toronto, Ontario, Canada • Posted June 19, 2026

Job Type: Contractor

Location: Toronto, Ontario

Posted: June 19, 2026

Category: Computer Occupations

Application Deadline: July 29, 2026

Role Description

Top Skills' Details
10+ years designing and building large-scale distributed web platforms/APIs**, ideally supporting millions of users, high transaction volumes, and always-on 24/7 production environments.
5+ years operating as a hands-on architect, Staff/Principal engineer, or technical lead**, owning end-to-end product/platform scope across multiple domains and staying at least 50% hands-on with coding and implementation.
Deep Java/Spring Boot backend expertise**, including REST APIs, microservices, GraphQL exposure, and strong end-to-end system design across APIs, messaging systems, RDBMS/NoSQL, containers, and infrastructure layers.
Proven ability to define and drive technical strategy across teams**, including roadmap ownership, ADRs, architecture decisions, tradeoff analysis, and alignment with engineering, product, and business stakeholders.
Track record leading complex technical initiatives from ambiguity to production**, includ...
                

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