Senior Frontend Engineer (React) — Build Scalable UIs | Hybrid Boston

great-gray-group; Boston (MA); On-site; USD 140,000 - 170,000; Full time

Job summary

Great Gray Group in Boston, MA is seeking a Senior Frontend Engineer to advance our cloud‑based retirement software. You will collaborate in an agile team, shape UI/UX, and drive best practices in frontend development across Angular and React.

You will own frontend architecture, mentor teammates, and deliver maintainable, scalable web applications. This role requires 5+ years in frontend engineering, strong API integration, and a proactive, collaborative mindset in a fast paced environment.

Qualifications

• 5+ years of frontend development with Angular/React/Next.js.
• Experience building responsive, accessible UIs and integrating with APIs.
• Strong understanding of frontend architecture and code quality practices.

Responsibilities

• Develop and enhance scalable, maintainable frontend solutions using Angular and React.
• Collaborate with cross-functional teams to translate requirements into high-quality web apps.
• Lead code reviews, enforce best practices for security and performance.
• Monitor and optimize front-end performance and reliability.
• Mentor teammates and contribute to technical discussions and design decisions.

Skills

Angular

React

Next.js

Education

Bachelor's Degree in Computer Science or related field

Tools

C# .NET

MSSQL

Python

Postgres

Databricks

Azure Cloud

Docker

GitHub

Cypress

Claude Code

SonarQube

Job description

Great Gray Group in Boston, MA is seeking a Senior Frontend Engineer to advance our cloud‑based retirement software. You will collaborate in an agile team, shape UI/UX, and drive best practices in frontend development across Angular and React.

You will own frontend architecture, mentor teammates, and deliver maintainable, scalable web applications. This role requires 5+ years in frontend engineering, strong API integration, and a proactive, collaborative mindset in a fast paced environment.