Top Tech Jobs & Startup Jobs in Montreal

Lead technical strategy and deliver backend systems for search and recommendation at scale. Collaborate with PM, design, and analytics to define and execute business-impacting projects. Own operations, availability, monitoring, and on-call practices while mentoring engineers and setting code and design standards.

Own and evolve Affirm's first‑party collections program across agent, digital, and AI channels. Develop strategy, manage BPOs and vendors, monitor portfolio performance, roll out AI and digital servicing, and partner cross‑functionally to improve recoveries, customer outcomes, and operational efficiency.

Lead development and productionization of fraud prediction models (tabular, graph, behavioral). Build scalable feature pipelines, run experiments, integrate models into real-time/batch systems, monitor model and data health, and collaborate cross-functionally to maintain model reliability and performance.

Own technical success for a portfolio of large merchants post-sale: lead integrations, advise developers and product teams, resolve critical issues, drive feature adoption, provide product feedback, and improve onboarding and operational efficiency.

Design and implement CIAM backend services for registration, authentication, and account management across B2C and B2B platforms, utilizing security standards and automation practices.

Lead technical strategy and execution for the shared mobile app infrastructure, build and maintain React Native and native modules, improve observability, CI/CD, releases and developer tooling, define standards and runbooks, mentor engineers, coordinate cross-functional trade-offs, and ensure production availability and quality across mobile products.

Lead pricing analytics for international market expansion: define pricing strategy, structure platform deals, perform economic analyses, run experiments, monitor and iterate pricing and offerings, and partner with cross-functional teams (Product, Credit, Finance, Engineering, Strategic Partnerships).

Lead technical strategy and execution for a backend ledger team building audit-grade, highly available financial systems. Drive architecture, operational reliability, monitoring, code quality, mentorship, and cross-functional collaboration to deliver accurate, scalable ledger and accounting functionality.

Lead the underwriting and credit risk validation sector within Model Risk Management. Manage and mentor a quantitative team, perform hands-on validations of complex ML models, assess data integrity and model performance, identify and remediate weaknesses, and partner with stakeholders to enhance the enterprise MRM framework and meet audit and regulatory requirements.

Lead technical partner integrations and solutions for merchants and partners (e.g., Shopify, Stripe). Provide technical leadership, respond to partner inquiries, design and document integrations, advise on platform strategy and tooling, manage project plans and long-term initiatives, and support cross-functional commercial and product teams to improve BNPL checkout experiences.