About Thri5 Thri5 is building the AI-powered execution layer for the modern retailer.Retailers generate massive amounts of data but still struggle with operational execution. Thri5 continuously identifies opportunities, prioritizes actions, and helps teams execute through intelligent workflows and AI agents.Founded by a team with deep retail and retail-technology experience, Thri5 is venture-backed by some of Canada's most prominent VC and angel investors.Why Join Thri5 Own major parts of the product end-to-end — from customer problem and technical design through productionBuild at the intersection of AI, data, product, and real-world retail operationsHelp shape the product, architecture, and engineering practices of an early-stage companyWork closely with experienced founders, engineers, and customersHave a direct impact on customers and company growthWhat You'll Do As a Senior Software Engineer at Thri5, you'll play a key role in building and scaling our product. You'll own significant technical problems from design through production, working closely with product, customers, and other engineers.You'll work across our stack, including:Building AI-powered workflows, agents, and customer-facing featuresDesigning backend services, APIs, data models, and data pipelinesMaking architectural decisions as the product and customer base scaleImproving reliability, observability, security,



and performanceEvaluating and incorporating new AI capabilities into our productReviewing code and helping establish strong engineering practices across the teamWe move quickly, work collaboratively, and expect senior engineers to combine solid technical judgment with a bias toward building and shipping.Technologies We Use We are an AI-native engineering organization and use specs, agent skills, and AI-assisted development workflows extensively. We use Claude Code extensively as part of our development workflow.Our core stack is Kotlin on GCP, Postgres, Snowflake, Airflow, Thymeleaf, and HTMX.We're more interested in strong engineering fundamentals and your ability to learn than previous experience with every part of our stack.Who We're Looking For 5+ years of professional software engineering experience, with a track record of designing, building, and operating high-quality production systemsAbility to independently scope ambiguous problems, make sound architectural decisions, and drive solutions through productionStrong backend development experience, including APIs, databases, and system architectureStrong product judgment and an interest in understanding the customer problems behind what you buildExperience working in fast-moving teams and building new productsStrong communication and collaboration skillsExperience with AI/LLM applications, enterprise Saa S, data-intensive systems, Kotlin/JVM, GCP, Snowflake, or early-stage startups is valuable but not required.Location: Downtown Toronto (Hybrid — 4 days a week in office)#J-18808-Ljbffr

📌 Senior Software Engineer (Toronto)
🏢 Thri5
📍 Toronto