Senior Frontend Engineer — AI-Powered UI Leader (Remote)

Sardine; United States; Remote; USD 140,000 - 190,000; Full time

Benefits offered by this job

MacBook Pro delivered to your door

Remote-first culture

Generous equity

Unlimited PTO and mandatory vacation

401k with 4% match

Full health/dental/vision coverage

Job summary

Sardine in the United States is seeking a senior frontend software engineer to own the design and delivery of user-facing experiences in our AI products. You will build polished, production-grade interfaces in React and TypeScript, while dipping into Go for backend services when needed.

This high-autonomy role requires leadership, mentorship, and a focus on performance, accessibility, and best practices for AI-assisted development across the team.

Qualifications

• 7+ years as a software engineer with frontline frontend focus.
• Proven track record shipping production-grade frontend at scale.
• Strong React/TypeScript craftsmanship and UX sensibility.
• Experience mentoring engineers and setting technical standards.
• Fluency with AI-assisted development tools and workflows.

Responsibilities

• Own design and delivery of user-facing experiences in our AI products.
• Build polished, performant interfaces in React and TypeScript.
• Collaborate with stakeholders to architect new experiences from inception to delivery.
• Mentor engineers, review code, and raise engineering standards.
• Use AI tooling (e.g., Claude) to accelerate development and establish best practices.

Skills

Frontend development

Leadership

English fluency

AI tools fluency

Customer-centric mindset

Mentoring engineers

Go familiarity

Fintech domain experience

Tools

TypeScript

React

Node.js

Golang

Bigtable

PostgreSQL

BigQuery

Python

Java

Terraform

Job description

Sardine in the United States is seeking a senior frontend software engineer to own the design and delivery of user-facing experiences in our AI products. You will build polished, production-grade interfaces in React and TypeScript, while dipping into Go for backend services when needed.

This high-autonomy role requires leadership, mentorship, and a focus on performance, accessibility, and best practices for AI-assisted development across the team.