6–8+ years of full-stack development experience
Strong proficiency in JavaScript and TypeScript
Solid experience with React and Node.js
Comfortable working with legacy frontend code (jQuery, Backbone) and backend .NET Framework codebases
Familiarity with SQL Server and writing performant SQL queries
Experience with GraphQL, Apollo Client, and MongoDB
Knowledge of feature flagging tools like LaunchDarkly
Ability to contribute in both monoliths and microservice environments
Skilled at balancing speed, scope, and maintainability in large systems
Excellent communication and collaboration skills
Fluent in English

Job Responsibilities

Maintain and improve legacy code that is still critical to the business, including jQuery-based UIs and .NET services
Help identify, scope, and migrate legacy features to modern stacks
Design and implement React + Node.js microservices in alignment with the platform architecture
Collaborate with PMs, designers, and engineers to refine requirements and propose efficient solutions
Ensure code quality through thoughtful practices, including unit testing, peer reviews, and documentation
Proactively identify ways to reduce complexity or improve performance across the system
Document technical decisions and approaches clearly for future maintainers
Guide and support other developers who interact with legacy systems
Participate in agile ceremonies, sprint demos, and team discussions with a focus on pragmatic outcomes

Department/Project Description

Our client provides a human insight platform that allows organizations to gather feedback from real users interacting with their products.

We’re seeking a Full Stack Software Engineer to support the Participant Experience Core team in maintaining critical legacy features while contributing to a modern, microservices-based platform. You’ll work across both stacks: keeping the lights on in jQuery and .NET-based code while helping migrate functionality to a more modular and scalable React + Node.js ecosystem.

This role is ideal for someone who can comfortably work across frontend and backend systems, enjoys solving real problems for real users, and is motivated by striking a balance between pragmatism and long-term vision.