Senior Javascript Developer - React

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Javascript Developer - React based in India.

As a Senior Frontend Developer, you’ll play a key role in building scalable, high-quality web applications using React.js and Next.js. You’ll own significant features end to end, from technical design through deployment and optimization. The role combines hands-on engineering with frontend architecture, performance, and user experience. You’ll work closely with cross-functional product teams to turn ideas into intuitive, engaging digital experiences. You’ll also raise engineering standards through code reviews, testing, refactoring, and technical debt reduction. As a senior member of the team, you’ll mentor other developers and contribute to the evolution of frontend practices. The environment is collaborative, fast-moving, remote, and focused on building products that solve real customer problems.

Accountabilities:: Architect and develop robust, scalable web applications using React.js and Next.js , ensuring maintainability, reliability, and a strong user experience.

Own significant frontend features throughout the complete lifecycle, from technical design and implementation to rollout and continuous improvement.

Drive frontend performance optimization, including server-side rendering, static generation, bundle size, Core Web Vitals, caching, debugging, and browser performance.

Collaborate with product, design, and other engineering teams to define and deliver features that improve user engagement.

Design and integrate REST-based third-party APIs and ensure reliable communication between frontend applications and external services.

Establish and maintain high engineering standards through code reviews, refactoring, testing practices, and pragmatic technical debt reduction.

Lead initiatives to improve frontend architecture, development workflows, deployment pipelines, and overall application quality.

Mentor junior and mid-level developers, share knowledge, and help strengthen the team’s frontend engineering capabilities.

Evaluate emerging web technologies, frameworks, and development practices and recommend improvements where they can create meaningful value.

Requirements:

5+ years of professional experience building production web applications with JavaScript.

5+ years of professional experience with React.js , including strong knowledge of functional components, hooks, state management, context, memoization, rendering behavior, and lifecycle concepts.

Hands-on production experience with Next.js , including server-side rendering, static generation, and routing.

Strong command of ES6+, TypeScript, HTML, CSS , and a state management library such as Redux or a comparable solution.

Proven experience designing and integrating REST-based third-party APIs .

Demonstrated experience with frontend performance optimization, debugging, browser testing, and modern web performance practices.

Experience with modern build tooling such as Webpack, Babel, or equivalent technologies , as well as frontend deployment pipelines.

Track record of leading code reviews, refactoring legacy code, and improving engineering standards.

Strong problem-solving skills, with the ability to independently analyze, clarify, scope, and translate requirements into effective technical solutions.

Strong attention to detail and a well-developed understanding of UI/UX and visual interfaces.

Familiarity with Google Lighthouse and PageSpeed Insights and their use in driving measurable performance improvements is preferred.

Knowledge of SEO best practices for server-rendered applications , component libraries, design systems, and monorepo tooling is advantageous.

Experience with automated testing tools such as Jest, React Testing Library, Playwright, or Cypress is a plus.

Familiarity with feature flagging, progressive rollouts, and asynchronous or distributed team environments is desirable.

Prior experience mentoring developers or leading technical initiatives is preferred.

Clear, confident communication skills, with the ability to both challenge ideas constructively and respond positively to feedback.

A curious, proactive, collaborative mindset and a genuine interest in building practical products that solve real problems.

Benefits:

Competitive salary based on skills and experience.

Fully remote work, enabling collaboration with a globally distributed team.

Flexible working hours and autonomy over your schedule.

Five-day work week designed to support a healthy work-life balance.

Team retreats and offsites for collaboration, connection, and recharging.

Meal vouchers and employee benefits, including health insurance.

Internal learning tracks and opportunities to expand your development expertise.

Company merchandise and additional employee perks.

How Jobgether works: We use an AI-powered matching process to ensure your application is reviewed quickly, objectively, and fairly against the role's core requirements. Our system identifies the top-fitting candidates, and this shortlist is then shared directly with the hiring company. The final decision and next steps (interviews, assessments) are managed by their internal team. We appreciate your interest and wish you the best!  Why Apply Through Jobgether?    Data Privacy Notice: By submitting your application, you acknowledge that Jobgether will process your personal data to evaluate your candidacy and share relevant information with the hiring employer. This processing is based on legitimate interest and pre-contractual measures under applicable data protection laws (including GDPR). You may exercise your rights (access, rectification, erasure, objection) at any time.     #LI-CL1