# Our Privacy Statement & Cookie PolicyThis posting is for proactive recruitment purposes and may be used to fill current openings or future vacancies within our organization.Senior Software Engineer – AI (Materia AI)We’re building the next generation of AI‑powered systems for tax and accounting professionals, and we need a Senior Software Engineer who can architect high‑performance backend platforms that make real‑world AI possible. If you thrive in fast‑moving environments, love solving complex distributed‑systems challenges, and want to see your work directly power intelligent, production‑scale features, this role is for you.

About the Role
As a Senior Software Engineer – AI, you will design, build, and optimize backend services that power AI‑native experiences across our Materia‑inspired product ecosystem. You will play a key role in shaping the architecture, performance, and reliability of the systems that orchestrate LLM interactions, serve high‑traffic APIs, and process large‑scale content.Own Backend Architecture for AI‑Native Products* Design and implement backend services using Python, FastAPI, and PostgreSQL.
* Build distributed systems that support real‑time AI interactions and high‑volume data flows.
* Define architectural patterns, service boundaries, and system interfaces for our AI platform.Engineer High‑Performance Services* Build APIs and microservices supporting AI agents, orchestration engines, and content pipelines.
* Optimize performance across concurrency, caching, throughput, and large‑scale document processing.
* Ensure backend systems scale seamlessly under demanding compute and data workloads.Integrate AI Components Into Production Systems* Connect backend services to LLM providers such as OpenAI and Anthropic.
* Implement orchestration logic,



protected execution flows, request routing, and latency‑tuned real‑time AI capabilities.
* Productionize AI components with robust error handling, guardrails, and observability.Raise the Engineering Bar* Lead architecture discussions, code reviews, and key technical decisions.
* Champion engineering best practices in testing, resiliency, observability, and maintainability.
* Support CI/CD pipelines, DevOps workflows, and cloud automation patterns.Collaborate Across Product & AI Teams* Work closely with ML engineers, product managers, and designers to translate requirements into scalable solutions.
* Turn conceptual AI features into reliable backend capabilities used by thousands of professionals.About YouRequired Qualifications* 4+ years of backend engineering experience building scalable APIs and microservices.
* Strong proficiency in Python, FastAPI, PostgreSQL, and AWS-based cloud services.
* Solid understanding of distributed systems, architecture, and data modeling.
* Strong debugging skills and experience delivering production-grade systems.
* Excellent communication and cross‑functional collaboration abilities.
* Comfortable in fast‑paced, iterative environments with evolving requirements.
* Curiosity about AI technologies and enthusiasm for integrating them into real systems.Preferred Skills* Experience with AI‑driven systems or agent architectures.
* Familiarity with embeddings, vector search,



or RAG-style retrieval systems.
* Strong opinions on backend testing, automation, and operational quality.
* Experience with modern LLM APIs or orchestration frameworks.#LI-SB1#LI-SB1
* Hybrid Work Model: We’ve adopted a versatile hybrid working environment (2-3 days a week in the office depending on the role) for our office-based roles while delivering a seamless experience that is digitally and physically connected.
* Flexibility & Work-Life Balance: Flex My Way is a set of supportive workplace policies designed to help manage personal and professional responsibilities, whether caring for family, giving back to the community, or finding time to refresh and reset. This builds upon our flexible work arrangements, including work from anywhere for up to 8 weeks per year, empowering employees to achieve a better work-life balance.
* Career Development and Growth: By fostering a culture of continuous learning and skill development, we prepare our talent to tackle tomorrow’s challenges and deliver real-world solutions. Our Grow My Way programming and skills-first approach ensures you have the tools and knowledge to grow, lead, and thrive in an AI-enabled future.
* Industry Competitive

Benefits:

We offer
comprehensive benefit plans to include flexible vacation, two company-wide Mental Health Days off, access to the Headspace app, retirement savings, tuition reimbursement, employee incentive programs, and resources for mental, physical, and financial wellbeing.
* Culture: Globally recognized, award-winning reputation for inclusion and belonging, flexibility, work-life balance, and more. We live by our values: Obsess over our Customers, Compete to Win, Challenge (Y)our Thinking, Act Fast

📌 Senior Software Engineer (Toronto)
🏢 Refinitiv
📍 Toronto