Our client is a global deep tech holding company working across roughly 10 countries and 30 businesses, in areas like fintech, data, and mobility (think transport, logistics, and smart cities). Most AI today is positive at talking: answering questions, writing text, giving advice. Our client builds the part that's missing: AI that can act in the real world and run things, not just describe them. That matters most for the organisations that can't take risks with their data or their systems, like airports, banks, power grids, and governments. So our client builds AI that these organisations can fully own and control themselves, instead of relying on someone else 's servers.We are looking for a foundational engineer to work directly with leadership in defining system architecture and building the technical foundation of a new platform. You will bridge the gap between business needs and technical implementation by defining high (architecture) to low (component) level design for extending, scaling, and maintaining our AI SDK.This is a high leverage role where one engineer is expected to deliver the impact of multiple traditional roles through strong system thinking and AI-assisted development. You will be one of the first critical hires,



helping shape both the system and the future team.ResponsibilitiesDesign systems across:ArchitectureModules / Components / ContainersAPI contractsTranslate business needs into scalable and efficient technical systemsUse AI tools to:Generate codeCritically review and validate outputsDefine and evaluate:Testing strategiesEdge casesFailure scenariosNavigate and understand large codebases independentlyContribute to technical direction and hiring decisionsRequirements10+ years of experienceStrong system design and architecture skillsAbility to deeply understand and critique complex systemsStrong grasp of testing in complex environmentsExperience working with AI-assisted development workflowsPreferred QualificationsGeneralist background across multiple domainsExperience building systems from scratchDemonstrated ability to handle ambiguity and complexityRecent hands-on coding experience including agentic codingNot a Fit IfYou specialize in a single language or stackYou prefer execution over system thinkingYou are not actively adapting to AI-driven developmentYou have been fully removed from hands-on work #J-18808-Ljbffr

📌 Senior Systems Engineer (Montreal)
🏢 Flatgigs
📍 Montreal