Senior Software Engineer (React.js)

Job description:

As a Senior Software Engineer – React.js / Next.js, you will play a key role in designing, developing, and delivering scalable, high-quality web applications. You will work closely with product managers, designers, QA engineers, backend engineers, and other cross-functional teams to build modern, responsive, and reliable digital experiences.

ESSENTIAL DUTIES AND RESPONSIBILITIES:

• Design, develop, enhance, and maintain scalable web applications using React.js, Next.js, TypeScript, JavaScript, HTML5, CSS3, and RESTful APIs.
• Build responsive, accessible, reusable, and high-performance UI components using React.js, Next.js, and modern front-end development practices.
• Develop and maintain front-end applications that integrate with RESTful APIs, GraphQL services, third-party systems, and enterprise platforms.
• Work extensively with Next.js concepts including server-side rendering (SSR), static site generation (SSG), routing, API integration, and front-end performance optimization.
• Implement state management and data-fetching solutions using technologies such as Redux, Redux Toolkit, Zustand, Context API, React Query/TanStack Query, or SWR.
• Collaborate closely with backend engineers to define API contracts, integration patterns, error handling, and data flows.
• Develop clean, reusable, maintainable, and well-tested code following modern front-end architecture and engineering best practices.
• Ensure applications meet standards for performance, scalability, accessibility, usability, and security.
• Conduct comprehensive code reviews and provide constructive technical feedback to team members.
• Troubleshoot and resolve complex technical issues across development, testing, staging, and production environments.
• Work with DevOps and engineering teams to support CI/CD, cloud deployments, monitoring, release management, and production support.
• Participate in technical design and architecture discussions and contribute to decisions related to front-end architecture and application scalability.
• Mentor junior and mid-level developers and contribute to a culture of technical excellence and continuous improvement.
• Stay current with emerging React, Next.js, TypeScript, and modern web development technologies and practices.

MINIMUM KNOWLEDGE, SKILLS AND ABILITIES:

The requirements listed below are representative of the experience, education, knowledge, skill and/or abilities required.

• Bachelor’s or Master’s degree in Computer Science, Software Engineering, Information Technology, or a related field.
• 6+ years of hands-on software development experience, with significant experience building enterprise-level web applications.
• Strong hands-on experience with React.js and modern React development practices.
• Strong hands-on experience with Next.js and modern application development patterns.
• Strong proficiency in JavaScript (ES6+) and TypeScript.
• Strong understanding of HTML5, CSS3, responsive web design, and modern browser technologies.
• Hands-on experience developing reusable and scalable React components and front-end architectures.
• Strong understanding of Next.js concepts including SSR, SSG, routing, API integration, rendering strategies, and performance optimization.
• Experience with React state management and data-fetching libraries such as Redux, Redux Toolkit, Zustand, Context API, React Query/TanStack Query, or SWR.
• Experience integrating front-end applications with RESTful APIs and/or GraphQL services.
• Strong understanding of REST API integration, asynchronous programming, error handling, authentication, and authorization.
• Experience with modern UI frameworks, styling systems, or component libraries such as Tailwind CSS, Material UI, Chakra UI, Styled Components, Emotion, Shadcn/UI, or Radix UI.
• Experience with modern front-end build tools and package managers such as Vite, Webpack, Babel, npm, Yarn, or pnpm.
• Experience with Git and source control, Agile methodologies, CI/CD pipelines, and modern software development practices.
• Hands-on experience with front-end testing and automation frameworks such as Jest, React Testing Library, Cypress, Playwright, or Selenium.
• Understanding of web application security, including authentication/authorization patterns, OAuth2, JWT, secure coding practices, and common web vulnerabilities.
• Experience working with cloud platforms such as AWS, Azure, or Google Cloud.
• Familiarity with Docker and containerized application environments.
• Knowledge of application monitoring and observability tools such as Splunk, AppDynamics, Prometheus, Grafana, or ELK.
• Strong troubleshooting, debugging, analytical, and problem-solving skills.
• Excellent communication and collaboration skills, with experience working in cross-functional engineering teams.
• Experience supporting applications in production environments, including incident troubleshooting and resolution.
• Hands-on experience with incident management processes and tools such as ServiceNow or similar ITSM platforms.

PREFERRED QUALIFICATIONS:

• Healthcare domain experience, including familiarity with healthcare workflows, terminology, HIPAA, PHI, or healthcare applications.
• Experience with other modern front-end frameworks such as Vue.js, Nuxt.js, Angular, Svelte, SvelteKit, Remix, or Gatsby.
• Experience building and maintaining design systems and reusable component libraries.
• Experience with micro-frontends or large-scale front-end architectures.
• Experience with GraphQL, API Gateways, gRPC, or event-driven integrations.
• Familiarity with NoSQL databases such as MongoDB, Cassandra, or DynamoDB.
• Understanding of distributed systems, caching strategies, scalability, performance optimization, and web application architecture.
• Experience with web performance optimization, including Core Web Vitals, code splitting, lazy loading, caching, and bundle optimization.
• Experience with accessibility standards, including WCAG and accessible UI development.
• Experience working with message-driven architectures such as Kafka, RabbitMQ, AWS SQS, or AWS SNS.
• Experience contributing to technical architecture and design decisions for enterprise applications.
• Experience mentoring developers and providing technical leadership within an engineering team.

Core Technologies:

• React.js
• Next.js
• TypeScript
• JavaScript
• HTML5
• CSS3
• REST APIs
• GraphQL
• Redux / Redux Toolkit
• React Query / TanStack Query
• Git
• CI/CD
• Cloud
• Docker

Skills

Next.js, React, React.js, TypeScript