Software Engineer to build and operate large-scale web applications, services, and APIs using Java and cloud technologies - 37685384 Duration: Until 31 Jul 2027 (possibility of extension)
Location: Hybrid - Downtown Toronto - 3 days a week
Join a team building mission-critical platforms that power AI-native web and mobile applications. This role contributes to large-scale services, plugin registries, runtime, and rendering capabilities supporting new AI experiences. The position offers direct impact on high-scale consumer-facing applications and services within an AI-driven platform transformation.
Must Haves 5+ years of backend development using Java
Experience building and operating large-scale consumer-facing web applications and services
Proficiency in server-side technologies, cloud technologies , web development, and the desire to work in a multi-disciplinary team operating in a DevOps model.
BS/MS in computer science or equivalent work experience
Nice to Have Experience with Kotlin
Expertise in service design, discovery, and runtime orchestration systems
Experience building and operating high traffic services and APIs
Responsibilities Drive large-scale projects from inception to production
Interface directly with stakeholders to support delivery
Mentor team members and support team growth
Operate in a fast-moving workplace to deliver outcomes
Investigate critical issues and apply learnings to the product and team
Build web applications, services, and APIs for AI-native experiences
Duration:



Until 31 Jul 2027 (possibility of extension)
Location: Hybrid - Downtown Toronto - 3 days a week
Join a team building mission-critical platforms that power AI-native web and mobile applications. This role contributes to large-scale services, plugin registries, runtime, and rendering capabilities supporting new AI experiences. The position offers direct impact on high-scale consumer-facing applications and services within an AI-driven platform transformation.
Must Haves 5+ years of backend development using Java
Experience building and operating large-scale consumer-facing web applications and services
Proficiency in server-side technologies, cloud technologies , web development, and the desire to work in a multi-disciplinary team operating in a DevOps model.
BS/MS in computer science or equivalent work experience
Nice to Have Experience with Kotlin
Expertise in service design, discovery, and runtime orchestration systems
Experience building and operating high traffic services and APIs
Responsibilities Drive large-scale projects from inception to production
Interface directly with stakeholders to support delivery
Mentor team members and support team growth
Operate in a fast-moving environment to deliver outcomes
Investigate critical issues and apply learnings to the product and team
Build web applications, services, and APIs for AI-native experiences
Disclaimer:
AI may be used in evaluating candidates.
This posting is for an existing vacancy.
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📌 Software Engineer to build and operate large-scale web applications, services, and APIs using Java a (Ontario)
🏢 S.I. Systems
📍 Ontario