Senior Fullstack Software Developer - AI Customer Support

Location: Remote (Canada)

Salary: $120,000–$200,000 per year

Company

hirify.global builds an operating system for communications service providers, covering billing, operations, automation, and AI-powered customer service.

What you will do

• Build the core AI agent runtime for voice, chat, and email conversations, with real-time access to billing, account, plan, and service APIs.
• Design the configuration experience for agent behaviour, tone, escalation rules, and business logic.
• Develop quality, observability, conversation analytics, and automated evaluation tooling.
• Build continuous-improvement systems that identify interaction gaps, suggest changes, and validate updates.
• Integrate voice, telephony, IVR, live chat, email, and SMS infrastructure.
• Design guardrails, safety controls, conversation testing, regression testing, and A/B testing frameworks.

Requirements

• Hands-on experience with LLMs, prompt engineering, AI agent design, and agentic systems that take real actions.
• Strong AI product-design instincts, including attention to failure modes, edge cases, and user trust.
• Experience building with coding agents such as Claude Code or Codex.
• At least five years of TypeScript experience, plus experience with React and Node.
• Experience with DevOps and cloud infrastructure.
• Strong collaboration skills and a high work ethic.

Nice to have

• Experience with voice AI, telephony integrations, IVR, SIP, WebRTC, Twilio, or Vonage.
• Conversation design, customer service operations, or contact-center tooling experience.
• Experience designing AI-agent evaluations or automated conversation simulations.
• Experience with GraphQL, serverless systems, or functional programming.

Culture & Benefits

• 100% remote environment with flexible working hours.
• 25 flexible vacation days.
• Group insurance, telemedicine, and a Life Spending Account.
• RRSP and DPSP contributions.
• Employee Stock Option Plan.