Senior Frontend Engineer: React on a Cloud-Native Platform

Alderson Loop; Maryland; On-site; USD 120,000 - 150,000; Full time

Job summary

Alderson Loop is seeking a Front-End Engineer to support a large-scale modernization initiative for a leading payroll and benefits organization. This role emphasizes React and modern cloud-native development in a fast-paced, collaborative environment.

The ideal candidate will contribute to transitioning from a legacy .NET monolith to a React + AWS-driven platform, shaping the future of the platform with strong front-end fundamentals and the ability to work from loose requirements.

Qualifications

• 5+ years of experience in front-end engineering or full stack development with strong front-end focus.
• Ability to build polished, scalable front-end solutions beyond basic forms and page layouts.
• Strong understanding of UI/UX principles and ability to work from loosely defined requirements.
• Comfortable working in fast-paced environments with evolving priorities, strong communication skills and ability to collaborate across technical and non-technical teams.

Responsibilities

• Support the development of a next-generation platform built on top of an existing legacy system.
• Create scalable, maintainable UI components and front-end architecture.
• Help improve usability, accessibility, and overall user experience across customer-facing applications.
• Work from product specs, examples, and general direction rather than fully refined design handoffs.
• Bring strong UI/UX judgment and design awareness to help shape the final product.
• Collaborate with product owners and engineering teams to iterate quickly and improve functionality.
• Support the transition from legacy .NET systems to a modern cloud-native environment.
• Leverage AI tools, coding assistants, and agentic workflows to improve development speed and efficiency.
• Help establish repeatable front-end patterns, scalable workflows, and stronger development practices.
• Partner closely with lead engineers, product owners, and technical leadership.
• Occasionally support or integrate with legacy .NET environments when needed.
• Participate in a highly collaborative, Agile-style delivery environment with fast iteration cycles.

Skills

React-focused

Front-end engineering

UI/UX principles

Collaborative teamwork

Agile delivery

Tools

Storybook

AWS

Serverless (Lambda)

GitHub

Job description

Alderson Loop is seeking a Front-End Engineer to support a large-scale modernization initiative for a leading payroll and benefits organization. This role emphasizes React and modern cloud-native development in a fast-paced, collaborative environment.

The ideal candidate will contribute to transitioning from a legacy .NET monolith to a React + AWS-driven platform, shaping the future of the platform with strong front-end fundamentals and the ability to work from loose requirements.