Senior Staff Engineer - Full-Stack, Solution Architecture About the role Our client is building an AI-centric engineering platform where brands operate as self-reliant, B2B-style customers. You will own product features end-to-end across the full stack - leveraging AI agents to multiply delivery throughput - while architecting robust, highly-available systems on a stable, brand-agnostic platform. This is a full-time IN-OFFICE position in Toronto. What you will do: Own delivery of product features end-to-end: design, build, verify against acceptance criteria, and ship to production. Build and operate 3rd-party and B2B integrations on the platform, delivering brand- and customer-specific features on top of a shared core. Use AI coding agents and automated verification to accelerate delivery, working within engineering quality gates and independent review. Set technical patterns and unblock yourself and others across a fast-moving, multi-workstream workplace. Must-haves - technical: Full-stack, production-grade. Senior/staff experience building software end-to-end: .NET / C# REST APIs and Next.Js / React front-ends with server-side rendering and real-time streaming (Server-Sent Events). Architecture at scale. Proven design and operation of highly-available, high-throughput systems. Data. Hands-on with MongoDB, Redis (sessions, caching, sorted-set/leaderboard patterns) and PostgreSQL; chooses the right storeper workload. Event-driven systems. Building producers/consumers on an event hub / Apache Kafka; event-schema design andreal-time aggregations. 3rd-party and B2B integrations. Designing and delivering integrations against external and game-provider APIs, and building brand-/customer-specific capabilities on a secure, brand-agnostic platform. API security.



OAuth-based auth, request signing (HMAC), idempotency, replay protection, and audit logging. AI-assisted delivery. Demonstrated use of AI coding agents/tooling to multiply throughput, and fluency working within automated verification (testing against acceptance criteria, regression, edge cases). Hands-on production monitoring. Operating production monitoring and issue triage (Sentry or equivalent); treats observability and CI/CD as part of "done.". Must-haves - delivery & ownership Proven track record of delivering robust solutions within tight, fixed timeframes - quality and speed together, not one at the expense of the other. Handles competing priorities across multiple workstreams without dropping commitments. End-to-end ownership of deliverables, from an ambiguous problem statement through to production. A can-do operator who embraces uncertainty and figures things out as they go - self-sufficient, decisive with incomplete information, and escalates judiciously rather than by default. Benefits Exposure to cutting-edge AI and automation technology that is actively transforming how marketing and operations are run at scale Genuinely interesting projects with up-to-date tooling, and the freedom to bring your own ideas to the table A collaborative, high-performance culture where ambition, accountability, and innovation are valued and rewarded Clear paths for development, progression, and advancement as the business scales A competitive salary plus discretionary bonus Comprehensive health benefits, including extended healthcare, dental, and vision coverage. On-site leisure facilities to switch off and recharge during the day. Fantastic company events On-site leisure facilities and on-site parking #J-18808-Ljbffr

📌 Sr Staff Engineer - Full Stack (Toronto)
🏢 Futuretek
📍 Toronto