Senior Frontend Engineer: Lead UI & Performance

Decca Consulting; Norwalk (CT); On-site; USD 140,000 - 180,000; Full time

Benefits offered by this job

Health insurance

Paid time off

Competitive salary

Job summary

Decca Consulting is seeking a Senior Frontend Engineer to lead the design and implementation of web and mobile experiences across member and advisor portals. You will collaborate with product, design, backend engineering, and analytics teams to deliver fast, accessible features.

You will own frontend architecture, implement React and TypeScript with GraphQL and REST APIs, emphasize performance, accessibility, and maintainable code, and mentor peers.

Qualifications

• 5+ years of experience building and operating production-grade web and mobile applications.
• Expert-level proficiency in React/React Native, TypeScript, modern UI patterns.
• Strong understanding of GraphQL, REST API integrations, caching strategies, CDNs, and databases.
• Proven track record of shipping high-quality, user-focused products end-to-end.
• Deep experience with performance optimization, accessibility, responsive design, and cross-device support.
• Strong testing discipline: unit/integration tests with Jest, RTL, Cypress or Playwright.
• Experience improving and operating production systems, including logging, monitoring, alarms, and error tracking.
• Demonstrated ability to collaborate across disciplines, communicate clearly, and influence technical direction.
• Passion for building products that help people, especially in health, wellness, or consumer empowerment.

Responsibilities

• Build and launch high-quality user interfaces for web and mobile that empower members to plan and manage their healthcare.
• Drive end-to-end ownership: requirements, architecture, implementation, testing, and production monitoring.
• Implement elegant, responsive, and accessible React-based experiences (React, TypeScript) integrated with GraphQL and REST APIs.
• Collaborate with backend engineers to design clean API contracts and maintain separation of concerns.
• Lead with a test-driven mindset: write robust unit, integration, and e2e tests, and partner with engineering to ensure full automation coverage.
• Continuously optimize performance, page load times, and Lighthouse/Core Web Vitals scores.
• Build reusable UI components and frontend infrastructure aligned with engineering best practices.
• Troubleshoot production issues, own monitoring dashboards, and ensure high reliability and availability.
• Mentor and hire engineers, influence engineering culture, and uphold high standards across code quality, documentation, and design.
• Help shape and evolve the product experience, participating in design reviews, usability discussions, and roadmap planning.

Skills

React/React Native

TypeScript

Performance optimization

Accessibility

Testing

Tools

GraphQL

REST APIs

Job description

Decca Consulting is seeking a Senior Frontend Engineer to lead the design and implementation of web and mobile experiences across member and advisor portals. You will collaborate with product, design, backend engineering, and analytics teams to deliver fast, accessible features.

You will own frontend architecture, implement React and TypeScript with GraphQL and REST APIs, emphasize performance, accessibility, and maintainable code, and mentor peers.