Senior Frontend Engineer — React + TypeScript Architect

sls.guru; Wilmington (DE); On-site; USD 120,000 - 180,000; Full time

Job summary

sls.guru is seeking a Senior Front-End Developer to join our engineering team. You will build modern, scalable web applications using React and TypeScript, collaborating with product managers, designers, backend engineers, and QA to deliver business-critical workflows.

You will work across feature development, frontend architecture, API integration, performance optimization, and platform improvements, joining a mature codebase with established engineering standards and modern tooling.

Qualifications

• Experience with React-based front-end development for large-scale applications.
• Strong proficiency in TypeScript and modern front-end patterns.
• Experience with TanStack Router, TanStack Query, and TanStack Form.
• Proficiency in Tailwind CSS and Vite for efficient UI builds.
• Focus on accessibility (WCAG) and performance optimization.

Responsibilities

• Build new product features using React, TypeScript, and TanStack tools.
• Develop reusable UI components within a shared design system.
• Integrate frontend with backend APIs and platform services.
• Build and maintain complex forms and data-driven UIs.
• Improve performance via code splitting and modern React practices.
• Maintain frontend architecture and implement engineering standards.
• Improve accessibility, testing, observability, and developer experience.
• Contribute to tooling, CI/CD pipelines, and deployment processes.
• Collaborate with product, design, backend, and QA teams to ship high-quality software.

Skills

React

TypeScript

TanStack Router

TanStack Query

TanStack Form

Tailwind CSS

Vite

Accessibility (WCAG)

OAuth / OIDC

CI/CD pipelines

Infrastructure as Code

Component-driven development

Frontend performance optimisation

Job description

sls.guru is seeking a Senior Front-End Developer to join our engineering team. You will build modern, scalable web applications using React and TypeScript, collaborating with product managers, designers, backend engineers, and QA to deliver business-critical workflows.

You will work across feature development, frontend architecture, API integration, performance optimization, and platform improvements, joining a mature codebase with established engineering standards and modern tooling.