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RouteThis · 5 months ago

Senior AI Developer

Toronto, Ontario, Canada

Full-time

Hybrid

Senior Level

RouteThis is a SaaS company headquartered in Kitchener-Waterloo, transforming how ISPs and smart home brands handle support. They are seeking a Senior AI Developer who will build AI systems to solve connectivity issues and lead evaluations of LLM usage for safety and performance. The role involves mentoring engineers, designing workflows, and partnering with product teams to develop intelligent solutions.

Artificial Intelligence (AI)

Responsibilities

Build agentic AI systems that solve real-world connectivity and support problems through planning, tool use, and multi-step reasoning

Lead the effort in evaluating LLM usage for safety, correctness, hallucination, contextual relevance, and performance—ensuring the right model is used for the job

Design robust prompts and workflows to support voice and text-based interactions across a wide variety of customer environments

Guide and mentor other engineers, elevating the team’s ability to build agentic systems through design reviews, pairing, and shared tooling

Partner with product and CX teams to deeply understand customer problems and drive intelligent solutions

Prototype quickly to learn what works—and scale what does

Qualification

AI-powered product developmentLLM evaluation techniquesPrompt engineeringScalable software systemsModern dev stacksCoachingVoice UX experienceAI developer toolsMentoring

Required

Hands-on experience building and shipping AI-powered products

Familiarity in LLM evaluation techniques: tool correctness, grounding, hallucination detection, prompt tuning, safety, etc

Understanding of RAG, multi-modal inputs, prompt engineering, and customer-specific customization

Practical knowledge of LLM observability, model selection, and cost-performance tradeoffs

Experience working in startup or high-speed product environments, where ownership and iteration are key

Proven experience designing and building robust, scalable software systems

Experience using AI developer tools (e.g., Cursor, Copilot, Surfboard) as part of your day-to-day workflow—and a willingness to share those practices to uplift the entire team

A natural coach and mentor—someone who makes the team better by sharing insights, patterns, and feedback

Voice interface or voice UX experience is a strong plus

Familiarity with modern dev stacks (e.g., AWS, Python, Node.js, React) and CI/CD pipelines