Senior Software Engineer - AI Experiences

Sardine
CA$185,000 - CA$210,000Remote

About The Position

As a frontend-focused Senior Software Engineer, you will own the design and delivery of the user-facing experiences at the heart of our AI products. Your primary focus is building polished, performant, production-grade interfaces in React and TypeScript. You'll also work in Go on the backend services and APIs that power those experiences, but that's a secondary part of the role. This is a high-autonomy, high-leadership position: you'll develop new features at scale, set the standard for how we build on the frontend, mentor the engineers around you, and use AI/agentic tooling (like Claude) to ship far faster than a traditional team would. The ideal candidate pairs exceptional frontend craft with the judgment to lead and the discipline to be relentlessly efficient with modern, AI-assisted workflows.

Requirements

  • 7+ years of proven experience as a software engineer, with deep specialization in frontend development.
  • Expert-level React and TypeScript, with a strong eye for UX, performance, and accessibility.
  • Demonstrated fluency with AI and agentic coding tools (e.g., Claude), and a track record of using them to ship efficiently and raise your own throughput.
  • Leadership experience: setting technical standards, mentoring engineers, and driving key technical decisions.
  • A track record of shipping high-quality, production-grade frontend at scale.
  • Working proficiency in Go (or the ability to become productive in it quickly) for backend services — secondary to your frontend work.
  • Comfort with ambiguity and the ability to prioritize autonomously against business needs.
  • Customer-centric approach with strong empathy toward users.
  • Proficient in English — from casual chats to formal reports.

Nice To Haves

  • Relevant industry experience in fintech, fraud, compliance, risk, or regulated systems is preferred.
  • Exposure to data tooling or pipelines is a nice-to-have, but not required.

Responsibilities

  • Design, build, and own user-facing features in React and TypeScript — polished, accessible, performant, and production-ready.
  • Set the technical direction and quality bar for our frontend, and lift the people around you through mentorship and code review.
  • Use AI and agentic development tools (such as Claude) fluently and effectively to move quickly, and help establish best practices for AI-assisted development across the team.
  • Dip into Go to build and extend the backend services and APIs behind your features when needed.
  • Collaborate closely with business stakeholders to architect and implement new experiences from inception to delivery.
  • Contribute to product and technical roadmaps, and to the broader direction of the engineering team.
  • Craft and maintain user-facing technical documentation that drives understanding and adoption of our products.
  • Play a pivotal role in shaping our engineering culture and ensuring high standards across the organization.

Benefits

  • Generous compensation in cash and equity
  • Early exercise for all options, including pre-vested
  • Work from anywhere: Remote-first Culture
  • Flexible paid time off and Year-end break
  • Health insurance, dental, and vision coverage for employees and dependents - US and Canada specific
  • 4% matching in 401k / RRSP - US and Canada specific
  • MacBook Pro delivered to your door
  • One-time stipend to set up a home office — desk, chair, screen, etc.
  • Monthly meal stipend
  • Monthly social meet-up stipend
  • Annual health and wellness stipend
  • Annual Learning stipend
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