Senior Software Engineer, Frontend

Sardine

. Design, build, and own user-facing features in React and TypeScript — polished, accessible, performant, and production-ready .

Posted 9/23/2026full-timeRemote • United StatesSenior💰 $145,000 - $195,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in Frontend Development with a focus on React and TypeScript, ensuring high-quality, accessible user-facing features. Possesses strong leadership skills in mentoring engineers and setting technical standards while collaborating effectively with stakeholders.

Highest-signal resume keywords

ReactTypeScriptAI-Assisted DevelopmentGoFrontend Development

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Frontend DevelopmentUser Experience (UX)Performance OptimizationAccessibility StandardsBackend ServicesAPI DevelopmentTechnical DocumentationCode ReviewTechnical DirectionProduction-Grade Software

Soft Skills

MentoringCollaborationCustomer EmpathyAutonomous PrioritizationComfort with Ambiguity

Tools & Technologies

ClaudeAI ToolsData ToolingDevelopment Pipelines

Industry Keywords

FintechFraudComplianceRiskRegulated Systems

Tech Stack

Tools & technologies

ReactTypeScriptGo

About the role

Key responsibilities & impact

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 the frontend
Mentor engineers and contribute through code review
Use AI and agentic development tools such as Claude and establish best practices for AI-assisted development
Build and extend backend services and APIs in Go when needed
Collaborate with business stakeholders to architect and implement new experiences from inception to delivery
Contribute to product and technical roadmaps and the broader direction of the engineering team
Craft and maintain user-facing technical documentation that drives product understanding and adoption
Shape engineering culture and ensure high standards across the organization

Requirements

What you’ll need

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
Relevant industry experience in fintech, fraud, compliance, risk, or regulated systems is preferred
Proficient in English — from casual chats to formal reports
Exposure to data tooling or pipelines is a nice-to-have, but not required
Must reside in the Eastern Time Zone to meet the needs of the team

Benefits

Comp & perks

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