Lead Engineer Fullstack

Frontend Lead Engineer React / with

Job Title: Lead Engineer IT React / Full Stack Developer

Experience Required: 58 Years
Location: Hybrid / Onsite
Type: Full-Time

Role Summary

We are seeking a strong Frontend Lead Engineer with deep hands-on experience in JavaScript/TypeScript UI architecture component-driven development and modern web application engineering. The role will primarily focus on building scalable responsive secure and high-performing frontend applications while also having working knowledge of -based backend services and API integrations.

The ideal candidate should be strong in frontend design patterns reusable UI components state management performance optimization accessibility and integration with backend APIs. The candidate should also have practical understanding of to collaborate effectively with backend teams support API development and troubleshoot full-stack application issues.

Key Responsibilities

Frontend Development React /

• Design and develop scalable responsive and high-performance web applications using and .
• Build reusable maintainable and accessible UI components using component-driven development practices.
• Work extensively with JavaScript TypeScript HTML5 CSS3 and modern frontend tooling.
• Develop both client-side rendered and server-side rendered applications using .
• Implement application state management using Redux Context API or similar libraries.
• Ensure strong focus on Core Web Vitals page performance accessibility responsiveness and browser compatibility.
• Build clean modular and maintainable frontend code following engineering best practices.
• Collaborate with UX/UI teams to convert design specifications into functional user-friendly interfaces.
• Consume REST APIs using Fetch Axios or equivalent libraries with proper error handling and asynchronous data management.
• Integrate frontend applications with authentication and authorization mechanisms such as JWT and OAuth2.
• Identify and resolve UI defects performance issues security vulnerabilities and code quality gaps.
• Mentor team members on frontend engineering practices code quality reusable components and design consistency.

UI Architecture & Engineering Standards

• Define frontend architecture folder structures coding standards and reusable component strategies.
• Drive adoption of component libraries design systems and consistent UI development practices.
• Review frontend code for maintainability scalability performance accessibility and security.
• Promote testable modular and loosely coupled frontend design.
• Support technical decision-making around frontend frameworks libraries build tools and deployment patterns.

Backend & Knowledge

• Have working knowledge of -based backend services and API development.
• Understand REST API design request/response handling middleware concepts routing and error handling.
• Collaborate with backend teams to define API contracts and ensure smooth frontend-backend integration.
• Support debugging of frontend and API integration issues across environments.
• Basic understanding of microservices asynchronous processing and event-driven communication is preferred.
• Exposure to NestJS or similar frameworks will be an added advantage.

Data & API Integration

• Work with REST APIs and understand integration patterns with backend systems.
• Handle API response mapping validation loading states error states and retry scenarios on frontend.
• Understand JSON/XML payload structures and secure API consumption patterns.
• Collaborate with backend teams on API versioning performance pagination caching and security requirements.

Testing & Quality

• Write unit and integration test cases for frontend components and application flows.
• Use testing frameworks such as Jest React Testing Library Cypress Playwright or equivalent.
• Ensure quality through code reviews static analysis linting formatting and automated test coverage.
• Support defect analysis root cause identification and production issue resolution.

Cloud DevOps & CI/CD

• Work with CI/CD pipelines using Azure DevOps GitHub Actions GitLab or similar tools.
• Understand build and deployment processes for frontend and applications.
• Work with source code repositories such as GitHub and Bitbucket.
• Basic understanding of Docker Kubernetes Azure or AWS deployment environments is preferred.
• Support environment-level troubleshooting and production readiness activities.

Required Skills & Experience

• 58 years of software development experience with strong focus on frontend development.
• Strong hands-on experience with JavaScript TypeScript HTML and CSS.
• Experience in building enterprise-level responsive accessible and high-performance web applications.
• Strong understanding of frontend architecture component-driven development state management and reusable UI patterns.
• Experience consuming REST APIs and integrating frontend applications with backend services.
• Working knowledge of and backend API concepts.
• Experience with testing tools such as Jest React Testing Library Cypress or Playwright.
• Good understanding of secure coding performance optimization accessibility and browser compatibility.
• Experience with Git-based source control and CI/CD practices.

Preferred Qualifications

• Exposure to frameworks such as or NestJS.
• Experience with design systems UI component libraries and micro-frontend architecture.
• Familiarity with cloud platforms such as Azure or AWS.
• Understanding of event-driven systems microservices and distributed application patterns.
• Experience working in regulated or high-security industries such as finance healthcare or insurance.
• Ability to work independently with minimal technical guidance and provide technical direction to team members.

This position can be based in any of the following locations:

Current Guardian Colleagues: Please apply through the internal Jobs Hub in Workday