Sr. Software Engineer UI Developer (React)

About the Role

Location: Northfield, IL

We are seeking a highly experienced Sr. Software Engineer – UI Developer to lead the design and implementation of scalable, resilient, and high-performance applications. This role is pivotal in modernizing e-commerce platform, integrating with cutting-edge SaaS solutions, and ensuring systems are designed for resiliency, reliability, and operational excellence. As a senior team member, you will drive technical design decisions, mentor junior developers, and embed Site Reliability Engineering (SRE) best practices into our workflows.

Key Responsibilities

1. Front-End Development Leadership

• Lead the design and development of responsive, dynamic, and cloud-native front-end applications using React and Next.js


• Architect and implement server-side rendering (SSR) solutions for optimal performance and SEO compliance.


• Utilize Cloudflare for CDN, edge computing, and security to enhance application delivery and reliability.

2. Cloud-Native Development

• Build, deploy, and manage applications using Azure services like Azure App Services, Azure Front Door, and Azure Static Web Apps.


• Integrate front-end applications with Azure PaaS offerings, such as Azure API Management, Azure Functions, and Azure Redis Cache.


• Drive adoption of modern front-end patterns, including Micro Front-End Architectures (e.g., Single SPA, Module Federation).

3. Performance Optimization and Security

• Optimize application performance through caching, lazy loading, and content delivery techniques.


• Implement secure designs and protocols (OAuth2, OpenID Connect) to protect applications and data.


• Monitor and resolve issues using Azure Monitor, Cloudflare analytics, and similar tools.

4. Continuous Improvement and Support

• Stay current with emerging trends in front-end and cloud-native development.


• Contribute to Agile ceremonies and promote a culture of continuous improvement within the team.


• Support production applications and ensure high availability by participating in on-call rotations as needed.

Core Requirements

• Front-End Development :




• 10+ years of hands-on software development experience, with 6+ years in cloud-native architecture.


• Advanced expertise in JavaScript, TypeScript, React (16+).


• Proficiency with SSR frameworks like Next.js or Nuxt.js.


• Strong knowledge of HTML5, CSS3, SCSS, and responsive design principles.

• Azure Expertise :




• Extensive experience with Azure App Services, Azure Front Door, Azure CDN, and other Azure PaaS offerings.


• Hands-on experience with Azure DevOps for CI/CD pipeline creation and automation.


• Cloudflare Knowledge :




• Deep understanding of Cloudflare Workers, caching strategies, DDoS protection, and WAF (Web Application Firewall).


• API Integration :




• Proficiency in interfacing with RESTful APIs and GraphQL services.


• Leadership Skills :




• Demonstrated ability to mentor and lead teams in technical implementations.


• Strong communication skills to drive alignment across technical and business stakeholders.

Preferred Skills

• Familiarity with build tools like Webpack, Vite, npm, or yarn.


• Understanding of accessibility standards and best practices (WCAG).


• Experience with containerization tools like Docker and orchestration with Kubernetes.


• Knowledge of Agile/Scrum methodologies and CI/CD best practices.