Senior Software Engineer, Frontend
at Sardine
Canada; United States, remote, senior, full time, CAD 1,60,000–2,10,000 / year, 7+ years
posted 26 Oct 2026
- Golang
- Bigtable
- Java
- BigQuery
- PostgreSQL
- Node
- Go
- Claude
- React
- TypeScript
- Terraform
- Python
About the role
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.
What you would do
- 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.
What they are looking for
- 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.
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