Senior Frontend Developer

About Fixl Solutions

Fixl Solutions is a technology company delivering enterprise-grade web applications, SaaS platforms, AI-powered solutions, CRM and ERP systems, e-commerce platforms, and blockchain/Web3 products.

We are looking for a skilled Senior Frontend Developer who can build scalable, secure, high-performance, and user-friendly applications for complex enterprise products.

Role Overview

As a Senior Frontend Developer, you will be responsible for designing and developing modern frontend applications, defining reusable UI architecture, improving application performance, and ensuring high-quality implementation across different products.

You will work closely with product managers, UI/UX designers, backend developers, QA engineers, DevOps teams, and solution architects to convert business and technical requirements into reliable production-ready applications.

Key Responsibilities

• Develop scalable, responsive, and high-performance web applications.
• Build reusable frontend components, shared libraries, and design systems.
• Translate UI/UX designs, wireframes, and prototypes into functional interfaces.
• Define and maintain frontend architecture, coding standards, and project structure.
• Integrate frontend applications with REST APIs, GraphQL APIs, WebSockets, and third-party services.
• Implement secure authentication and authorization flows, including role-based and permission-based access.
• Develop complex dashboards, forms, tables, charts, workflows, and administrative interfaces.
• Manage application state using suitable state-management solutions.
• Optimize applications for performance, accessibility, SEO, and different screen sizes.
• Implement code splitting, lazy loading, caching, pagination, virtualized lists, and bundle optimization.
• Write clean, modular, testable, and maintainable code.
• Perform code reviews and provide constructive technical feedback.
• Mentor junior and mid-level frontend developers.
• Collaborate with backend teams to define API contracts and error-handling standards.
• Work with QA engineers to improve test coverage and resolve defects.
• Participate in sprint planning, technical discussions, estimation, and architecture reviews.
• Troubleshoot production issues and perform root-cause analysis.
• Maintain technical documentation for frontend architecture, components, and development standards.
• Evaluate new frontend technologies and recommend improvements where appropriate.
• Ensure applications meet security, privacy, accessibility, and enterprise-quality requirements.

Required Technical Skills

• Strong proficiency in HTML5, CSS3, JavaScript, and TypeScript.
• Advanced experience with React.js and the modern React ecosystem.
• Strong experience with Next.js or another enterprise frontend framework.
• Experience with state-management solutions such as Redux Toolkit, Zustand, Context API, or equivalent.
• Strong understanding of component-driven development and reusable UI architecture.
• Experience with responsive design and mobile-first development.
• Experience with CSS frameworks or styling solutions such as Tailwind CSS, Material UI, Ant Design, Styled Components, or CSS Modules.
• Strong understanding of REST API integration and asynchronous programming.
• Experience handling authentication, refresh tokens, session management, protected routes, and role-based access control.
• Knowledge of browser behavior, rendering, caching, cookies, storage, and cross-browser compatibility.
• Experience with frontend testing tools such as Jest, React Testing Library, Cypress, or Playwright.
• Experience with Git, pull requests, branching strategies, and code-review workflows.
• Familiarity with CI/CD pipelines and frontend deployment processes.
• Understanding of web security concepts, including XSS, CSRF, CORS, secure storage, and dependency vulnerabilities.
• Knowledge of frontend performance monitoring and optimization.
• Ability to debug complex UI, API, state-management, and performance issues.

Preferred Skills

• Experience building enterprise SaaS or multi-tenant applications.
• Experience developing ERP, CRM, HRMS, fintech, analytics, marketplace, or workflow-management platforms.
• Experience with micro-frontend architecture.
• Experience with WebSockets, server-sent events, and real-time applications.
• Experience with Web3 libraries such as Ethers.js, Viem, Wagmi, or Web3.js.
• Experience integrating wallets, blockchain transactions, or smart-contr…