Senior Frontend Engineer - AI Personalization (Hybrid)

HelloFresh; Toronto; Hybrid; CAD 130,000 - 150,000; Full time

Benefits offered by this job

Box discount

Health benefits

RRSP matching

Vacation & PTO

Parental leave

Career development

Diversity & Inclusion

Fun culture

Job summary

HelloFresh Canada is seeking a Frontend Engineer for Conversions in Toronto. You will build personalized web experiences that guide users through funnels, using React, TypeScript, and Next.js, with edge runtimes (Vercel/Cloudflare).

You’ll integrate with CMS, run A/B tests, and focus on fast, reliable performance across mobile and desktop. You will collaborate with ML, product and design teams to ship high-impact features and monitor performance, tracing, and quality.

Qualifications

• Solid experience with React, TypeScript and modern frontend development, including strong debugging skills across frontend and infra logic.
• Hands on experience with Next.js and edge runtimes like Vercel Edge or Cloudflare Workers.
• Familiarity with caching strategies and how they affect personalization and performance.
• Experience integrating with a CMS (e.g., Contentful or Builder.io) and conducting A/B testing using frameworks (Statsig, Optimizely).
• Experience with web performance, Core Web Vitals, and monitoring tools such as Sentry or similar.

Responsibilities

• Build and maintain personalized landing pages and funnel steps using React, TypeScript and Next.js
• Work across frontend and infra tasks, including Cloudflare Workers, cache rules and Vercel Edge functions
• Integrate dynamic content and variations coming from our CMS
• Implement and validate A/B tests with Statsig, ensuring clean tracking and test integrity
• Ensure strong performance on mobile and desktop, focusing on Core Web Vitals and low latency personalization
• Implement and monitor frontend performance and error tracing using tools like Sentry and Honeycomb
• Work with SSR and modern rendering patterns in Next.js to balance performance, caching and personalization
• Use AI tools to speed up development, UI building and content workflows
• Work closely with product, machine learning and design teams to shape new personalized experiences
• Own features end to end, from design to rollout, monitoring and iteration
• Work beyond your specialization when the problem demands it. Your specialization is your anchor, not your boundary.
• Operate what you build. You instrument, monitor, and improve your systems in production. Shipping is the beginning of the learning cycle, not the end.

Skills

React

TypeScript

Next.js

Edge Runtimes

Tools

Cloudflare Workers

Vercel Edge

Sentry

Honeycomb

Job description

HelloFresh Canada is seeking a Frontend Engineer for Conversions in Toronto. You will build personalized web experiences that guide users through funnels, using React, TypeScript, and Next.js, with edge runtimes (Vercel/Cloudflare).

You’ll integrate with CMS, run A/B tests, and focus on fast, reliable performance across mobile and desktop. You will collaborate with ML, product and design teams to ship high-impact features and monitor performance, tracing, and quality.