Senior Software Engineer, Frontend

As a Senior Software Engineer, Frontend at Sardine, you will own the design and delivery of user-facing experiences at the heart of our AI products. You join a team building polished, performant, production-grade interfaces in React and TypeScript, with secondary work in Go on backend services and APIs. This is a high-autonomy, high-leadership position where you develop new features at scale, set the standard for how we build on the frontend, mentor engineers around you, and use AI and agentic tooling like Claude to ship faster than traditional teams.

What you'll do

• Design, build, and own user-facing features in React and TypeScript that are polished, accessible, performant, and production-ready.
• Set the technical direction and quality bar for the 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 products.
• Play a pivotal role in shaping engineering culture and ensuring high standards across the organization.

What you bring

• 7+ years of proven experience as a software engineer, with deep specialization in frontend development.
• Expert-level proficiency in React and TypeScript, with a strong eye for UX, performance, and accessibility.
• Demonstrated fluency with AI and agentic coding tools such as 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.
• Comfort with ambiguity and the ability to prioritize autonomously against business needs.
• A customer-centric approach with strong empathy toward users.
• Proficiency in English, from casual chats to formal reports.

Nice to have

• Relevant industry experience in fintech, fraud, compliance, risk, or regulated systems.
• Exposure to data tooling or pipelines.

What we offer

• Generous compensation in cash and equity, with early exercise for all options including pre-vested.
• Remote-first work culture, with flexibility to work from anywhere.
• Flexible paid time off and year-end break.
• Health insurance, dental, and vision coverage for employees and dependents (Canada specific).
• 4% matching in RRSP (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.

About Sardine

Sardine is the leading agentic risk platform for fighting financial crime. The integrated solution unifies data across risk teams to help organizations stop fraud in real time, prevent AI-driven attacks, and automate fraud and AML operations. Leading companies including FIS, GoDaddy, Intuit, Edward Jones, ZoomInfo, and Checkout.com rely on Sardine to secure and grow trust in their products.