Senior Artificial Intelligence Engineer

What You'll Be Doing:

• Architectural Leadership: acting as a consultative body for architectural planning and infrastructure decisions and provide expertise to engineering teams on system design, scalability, and integration to deliver robust and future-proof solutions
• Foundational Services Development: build and maintain  foundational services to solve common problems once ; services will act as building blocks for feature development, including bank feeds, authentication, document processing
• Standards and Best Practices: establish and enforce consistent standards, patterns, and practices for system design & development
• Technical Design Document Governance: review TDDs to maintain high standards and architectural consistency
• R&D and Emerging Technologies: lead exploratory initiatives to evaluate and adopt emerging technologies, such as AI-driven workflows or new integration patterns
• Scale and Resilience: partner with SRE and Platform Engineers to optimize infrastructure to scale with business growth, focusing on stability, developer velocity, and customer experience

Who You Are:

• Comfortable with ambiguity - you can bring clarity to ambiguous problem spaces, even if they lack formal structure
• Deep AI experience, within modern LLM and various techniques including RAG, fine tuning and agentic workflows
• Deep infrastructure experience, particularly on AWS
• High ownership and the ability to execute against projects with minimal oversight
• Pragmatic with tradeoffs - you are comfortable with a crawl-walk-run approach to development to quickly prove out core product hypotheses and experiments
• Breadth and deep technical knowledge across all layers of the stack (front end, back end, infrastructure, mobile, AI)
• History of contributing to large-scale and highly-performing systems with unique scaling or performance characteristics
• You're perpetually curious and always learning - whether about the latest languages, frameworks, best practices, or the tech industry in general
• You're a team player - our team is small and mighty, and we collaborate constantly - we want someone who is always willing to pitch in and isn’t afraid to ask for help

Our Tech Stack:

• Front-end: React, Typescript, Redux, Redux-Saga, React Native
• Back-end: Node.js, Typescript, Terraform, AWS (DynamoDB, RDS Postgres, Lambda, S3, SQS, SNS, SES, ElasticSearch, ECS)
• Tools: GitHub, GitHub Actions, Docker, Jira, Datadog, Metabase, VS Code
• Integrations: Plaid, QuickBooks, Xero, Gusto, Yodlee, Finicity, Castle, Sardine, Middesk, Vero

Our Commitment To You:

• Competitive salary and meaningful equity: Relay employees are Relay owners, complete with equity and a competitive salary. 
• Comprehensive health benefits: enjoy full health benefits from day one. We offer flexible Health or Wellness Spending Accounts and medical, dental, and vision coverage for you and your dependents.
• Flexible vacation and time off: every team member starts with 15 vacation days and 5 flex days to use as needed, plus an extra week of office closure during the end-of-year holidays so you can take time off to recharge and come back better for our customers.
• Parental leave with top-up: we offer 12 weeks off with a 100% salary top-up for all full-time employees, regardless of location, and accessible for all parents: birthing, non-birthing, and adoptive.
• Hybrid work environment: we value meaningful collaboration and connection at our Toronto office twice a week, with lunch, snacks, and beverages on us.
• Dog-friendly space: can dogs really make you happy and healthy? We don’t know for sure, but since we don’t want to chance it, our office is 100% floof-friendly.
• Personal and professional growth: through ongoing feedback, mentorship, and coaching, work with peers and leaders who are invested in your growth and success. 
• Top-tier equipment: as a Mac-first company, our Toronto offices have everything you need to produce your best work comfortably, from multiple screens to ergonomic seating.
• Social connection: we believe in celebrating our wins with two annual company-wide get-togethers, quarterly team events, happy hours, and special events and networking opportunities with industry leaders.


We’re driving real change for small business owners, powered by truly remarkable people. At Relay, you’ll find the confidence to take changes, trust to take initiative, and the support you need to build a career you love. Here, we make sure every team member feels empowered to make big decisions, encourage to ask tough questions, and challenged to take risks that result in work we’re all proud of. We give you the baton–you run the Relay.