ReactJS Developer

About NonStop io Technologies:

NonStop io Technologies is a value-driven company with a strong focus on process-oriented software engineering. We specialize in Product Development and have a decade's worth of experience in building web and mobile applications across various domains. NonStop io Technologies follows core principles that guide its operations and believes in staying invested in a product's vision for the long term. We are a small but proud

group of individuals who believe in the 'givers gain' philosophy and strive to provide value in order to seek value. We are committed to and specialize in building cutting-edge technology products and serving as trusted technology partners for startups and enterprises. We pride ourselves on fostering innovation, learning, and community engagement. Join us to work on impactful projects in a collaborative and vibrant environment

Brief Description:

NonStop io is seeking a proficient React.js developer to join our front-end development team. In this position, you’ll be mainly crafting and integrating UI components through React.js methodologies and workflows like Mobx and Redux.

Responsibilities:

● Developing and implementing UI components using React.js

● Collaborating with cross-functional teams to design and ship new features

● Building reusable components and front-end libraries for future use

● Translating designs and wireframes into high-quality code

● Optimizing components for maximum performance across various web browsers

● Troubleshooting and debugging issues to ensure smooth user experiences

● Participating in code reviews to maintain code quality and consistency

● Improvement and optimization of existing codebase

● Keeping up with industry trends

● Identifying issues with technologies and architecture and then implementing solutions

● Assist with ticket creation, refinement, and estimation

● Participate in sprint planning and ticket distribution for frontend team

Qualifications & Skills:

● Proficiency in React.js and its core principles

● Strong JavaScript, TypeScript, HTML5, and CSS3 skills

● Experience with popular React.js state management libraries and approaches (such as Mobx, Redux, and Context API)

● Familiarity with RESTful APIs and integration

● Knowledge of modern authorization mechanisms, such as JSON Web Tokens

● Understanding of front-end build tools and pipelines

● Familiarity with any one of backend technologies such as Node.js, Java, or Python

● Excellent problem-solving and communication skills

● A strong attention to detail, and a passion for delivering high-quality code

● Expertise in designing scalable and efficient front-end architecture

● Adaptability to changing project requirements and priorities

● Experience with version control systems, particularly Git

● Experience working in Scrum and familiarity with Atlassian (Jira, Confluence, Bitbucket)

● Experience with diverse applications and architectural patterns

● A degree in computer science, software engineering, or a related field

● Strong understanding of object-oriented programming principles and design patterns

● Familiarity with automated testing frameworks and methodologies

● Excellent problem-solving skills and attention to detail

● Strong communication skills and ability to work effectively in a collaborative team environment

● Ready to be a tech-agnostic engineer and comfortable to shift on any tech stack

● Comfortable working with AI (Claude code, Cursor etc)

If you're passionate about technology and want to work on impactful projects, we'd love to hear from you

NEED TO HAVE :

1) Have some knowledge of front end like React.JS

2) HTML, CSS

3) Strong in JavaScript concepts

4) Good communication skills

5) Loves to code

GOOD TO HAVE :

1) Experience with type script will be a plus

2) Experience with Nest.JS framework will be a plus

3) Strong hold on ES6 principles.

4) Familiar with TDD ( Test Driven Development ) will be a plus.

5) Familiar with working in CI / CD will be a plus

6) Micro-Service architecture knowledge will be an added benefit.

You can contact me on this WhatsApp number: Nine three one six one two zero one three two

Role Description

This is a full-time role for a React.js Developer who will be responsible for developing, maintaining, and optimizing responsive and scalable web applications. The successful candidate will work closely with UI/UX designers, backend developers, and product teams to convert designs and requirements into high-quality, production-ready applications. The role requires strong problem-solving skills, attention to detail, and the ability to take ownership of features from development through deployment.

Key Responsibilities

• Develop responsive and scalable web applications using React.js.
• Build reusable and maintainable frontend components.
• Convert UI/UX designs and Figma prototypes into functional web interfaces.
• Integrate frontend applications with REST APIs and backend services.
• Manage application state using Redux, Context API, Zustand, or similar technologies.
• Optimize applications for performance, responsiveness, and scalability.
• Debug and resolve frontend issues across development and production environments.
• Ensure cross-browser and cross-device compatibility.
• Collaborate with UI/UX designers, backend developers, QA, and product teams.
• Participate in code reviews and follow clean coding and development practices.
• Write and maintain appropriate tests for frontend applications.
• Stay updated with modern frontend technologies and best practices.
• Take ownership of features from development and testing through deployment and maintenance.

Requirements

• Strong proficiency in JavaScript (ES6+) and React.js.
• Good understanding of React Hooks, component architecture, props, state, and Context API.
• Strong knowledge of HTML5 and CSS3 and responsive web development.
• Experience integrating REST APIs and working with JSON.
• Experience with state management libraries such as Redux, Zustand, or similar.
• Experience with Git and GitHub/GitLab.
• Understanding of frontend performance optimization and browser debugging.
• 3+ years of hands-on experience in frontend development with React.js.
• Experience with TypeScript and Next.js is preferred.
• Familiarity with UI libraries such as Tailwind CSS, Material UI, or similar is a plus.
• Experience with frontend testing tools such as Jest, Vitest, or React Testing Library is a plus.
• Good problem-solving and analytical skills.
• Strong communication and collaboration skills.
• Ability to work independently, prioritize tasks, and meet deadlines.
• A proactive approach to learning and solving technical problems.

Candidates with strong practical experience, personal projects, GitHub contributions, or demonstrable frontend work may also be considered in place of extensive professional experience.

Position: Sr. React Developer

Experience: 3 - 6 Years

Location: Hyderabad (Hybrid)

Job Summary

P99soft is looking for a skilled React Developer with 3 - 6 years of hands-on experience, including expertise in TypeScript, unit testing frameworks (Jest & React Testing Library), and micro-frontend architecture. The ideal candidate will have strong proficiency in building scalable, high-performance web applications using React and modern front-end technologies.

Key Responsibilities:

• Develop, test, and maintain responsive web applications using React.js and TypeScript
• Implement and maintain unit tests using Jest and React Testing Library
• Build scalable UI components with micro-frontend architecture
• Collaborate with UX/UI designers and backend developers to deliver high-quality solutions
• Write clean, modular, and maintainable code following best practices
• Integrate RESTful APIs and third-party services
• Troubleshoot and debug issues, and optimize performance across platforms
• Participate in code reviews, agile ceremonies, and sprint planning
• Ensure cross-browser compatibility and mobile responsiveness
• Maintain technical documentation and contribute to knowledge sharing

Required Skills:

• Strong proficiency in React.js, including hooks, lifecycle methods, and state management
• Expertise in TypeScript
• Solid understanding of JavaScript (ES6+), HTML5, CSS3, and Tailwind CSS
• Experience with Redux, React Router, and UI libraries like Material UI or Ant Design
• Practical experience with unit testing using Jest and React Testing Library
• Familiarity with micro-frontend architecture
• Experience integrating and consuming RESTful APIs
• Good understanding of Git and version control practices
• Hands-on experience with Webpack, Babel, and modern build tools
• Familiarity with Agile/Scrum methodologies

Benefits

• Competitive salary and performance-based bonuses.
• Comprehensive health insurance.
• Paid time off and flexible working hours.
• Professional development opportunities and support for continuing education. Udemy Learning Licenses to enhance skills and stay up-to-date with the latest technology.

P99soft is an equal-opportunity employer

P99soft is an equal-opportunity employer. At P99soft, we are committed to providing equal employment opportunities regardless of job history, disability, gender identity, religion, race, color, caste, marital/parental status, veteran status, or any other special status. We stand against the discrimination of employees and individuals and are proud to be an equitable workplace that welcomes individuals from all walks of life if they fit the designated roles and responsibilities.

Life@P99soft

At P99soft, we believe in creating a work environment that balances professional excellence with personal well-being. Our vibrant office culture is built on mutual respect, inclusivity, and a shared passion for innovation. We host regular team-building activities, workshops, and social events to foster a sense of community and collaboration among our employees. Join us and be part of a team that values your contributions and supports your growth

About Us

P99soft is a leading IT Services and IT Consulting company dedicated to making our customers' business operations seamless by providing them with digital services and applications using the latest technologies. We are committed to bringing excellence to all our creations. We need passion, empathy, and being customer-focused to achieve technical excellence. We believe in transparency through open communication and work with honesty and integrity while dealing with our customers and partners.

Our Vision: “To lead digital transformation for our customers, delighting them at every step, while empowering our employees and fostering success.”

Our Mission: “To attain our objectives within a framework of integrity, transparency, and respect for our clients, employees, partners, and the community, fostering mutual trust and sustainable growth.”

Journey towards digital transformations begins here. Our talented teams help you make informed decisions, enhance operation efficiencies, create state-of-the-art visual interfaces, and design dynamic workflows to bring a better customer experience. Our engineering teams take complete ownership of assigning the right talent and architecting solutions using the latest technologies.

We are seeking an experienced, hands-on SDE 3 - FE to build and optimize scalable, user-friendly applications with a focus on micro frontend architectures. The ideal candidate will blend strong UI engineering skills with modern frontend practices, ensuring responsive, secure, and high-quality experiences aligned with business needs.

Responsibilities

●      Design & Build: Develop scalable, performant front-end applications using React, TypeScript, and Micro Frontend architecture.

●      Code Quality: Review PRs, enforce best practices, and introduce patterns to reduce technical debt.

●      UI/UX Excellence: Deliver pixel-perfect, responsive, and accessible UIs across devices and browsers.

●      Performance: Optimise rendering, bundling, caching, and load times for smooth user experiences.

●      Mentorship: Guide and mentor mid/junior engineers, run design/code walkthroughs, and foster a culture of technical excellence.

●      AI-driven Development: Leverage AI tools to accelerate coding, debugging, testing, and documentation in day-to-day workflows.

Criteria:

Experience: ~5–7+ years in software development, with proven expertise in React, modern frontend architectures, and building scalable user interfaces.

Technical Skills

●      Strong proficiency in React.js (v17+), TypeScript, and modern frontend workflows.

●      Experience with Micro Frontend architectures (e.g., Module Federation, Webpack, or similar approaches).

●      Solid expertise in HTML5, CSS3, and mandatory proficiency with Bootstrap for responsive design.

●      Knowledge of Blade templates for frontend-backend integration.

●      Good-to-have: Tailwind CSS and Material UI for component-based design systems.

●      Deep understanding of state management (Redux, Recoil, or equivalent).

●      Experience with frontend performance optimisation and browser dev tools.

●      Familiar with testing frameworks (Jest, React Testing Library, Cypress).

●      Proficiency with Docker and containerised environments.

●      Experience with CI/CD pipelines for frontend deployments.

●      Ability to effectively use AI-powered tools for code generation, refactoring, documentation, and productivity improvements.

Soft Skills

●      Clear and effective communication.

●      Strong sense of ownership and accountability.

●      Ability to break down complex problems and provide accurate estimates.

●      Openness to adopt new tools/technologies to improve team efficiency.

What we offer:

●      An exceptional team: Our hiring bar is high, and your colleagues are talented, motivated self-starters.

●      A learning environment: We are a learning organisation, and as a team, we will help you grow and encourage you to learn and upgrade your skills.

●      Outstanding compensation: top talent deserves top pay, and our salary, equity and benefits reflect this.

●      Opportunities to grow: Encourages you to attend technical conferences and take company funded educational courses to advance your skills.

●      An opportunity to be a key member of a well-capitalised, leading brand in an online real estate investing platform.

• 5–8 years of experience in full-stack development.
• Strong hands-on experience with React.js and JavaScript/TypeScript.
• Develop reusable, responsive, and high-performance UI components.
• Experience with React Hooks, Redux, Context API, and frontend state management.
• Strong knowledge of Core Java, Java 8/11/17+, and object-oriented programming.
• Hands-on experience with Spring Boot, Spring MVC, and Spring Security.
• Design, develop, and integrate RESTful APIs and microservices.
• Work with databases such as PostgreSQL, MySQL, or Oracle.
• Write unit, integration, and frontend tests using tools such as JUnit, Jest, or React Testing Library.
• Collaborate with product managers, UI/UX designers, QA engineers, and development teams.
• Participate in design discussions, code reviews, sprint planning, and Agile ceremonies.
• Troubleshoot application issues and optimize system performance.
• Use Git, Maven/Gradle, and CI/CD pipelines for development and deployment.
• Exposure to Docker, Kubernetes, AWS, or other cloud platforms is an added advantage.
• Strong problem-solving, communication, and teamwork skills.

Key Responsibilities

Frontend & Extension Development

• Build and maintain highly responsive, modern user interfaces using React.js for web applications, browser extensions, and Electron-based desktop clients.

• Architect and develop modular, reusable UI components using Material-UI (MUI / Joy UI) and styled-components/Emotion.

• Manage complex multi-target build pipelines (Web, Extension, Electron) using Webpack and Craco.

AI Integration & Engineering

• Seamlessly integrate Generative AI capabilities into the frontend, including AI-driven chatbots, contextual AI suggestions, and RAG (Retrieval-Augmented Generation) interfaces.

• Collaborate closely with backend and AI specialists to consume AI-powered REST APIs and WebSocket streams, ensuring fluid and responsive user experiences.

• Implement robust markdown and code rendering (e.g., react-markdown) for rich AI conversational outputs.

Real-Time Data & State Management

• Implement low-latency, real-time communication features using Socket.IO for chat and collaborative functions.

• Efficiently manage complex application state, data fetching, and caching using modern tools like React Query and Axios.

Quality & Collaboration

• Work within a monorepo/workspace structure to maintain distinct client, component, and extension packages.

• Participate in code reviews to maintain high code quality, performance, and enterprise security standards.

• Collaborate with teams using Agile/Scrum methodologies for rapid and structured delivery.

Required Skills:

• Core Languages: Proficiency in JavaScript (ES6+) and TypeScript.

• Frontend Frameworks: Strong, hands-on experience with React.js (Hooks, Context), React Query, and React Router.

• Styling & UI: Deep understanding of HTML5, CSS3, and CSS-in-JS libraries (e.g., styled-components, react-jss). Hands-on experience with MUI (Material UI / Joy UI) is highly preferred.

• Architecture & Build: Experience configuring and optimizing builds with Webpack and Craco. Familiarity with npm workspaces/monorepos.

• Real-time & APIs: Ability to design and implement robust client-side integrations with RESTful APIs and WebSockets (Socket.IO).

• Agile & Workflow: Experience working with Agile and Scrum methodologies.

Preferred/Bonus Skills:

• Experience in building and packaging Browser Extensions and/or Electron applications.

• Genuine curiosity and awareness of Generative AI workflows (e.g., prompt engineering concepts, handling streaming AI responses).

• Experience with rich text editing or markdown rendering in React.

Role Summary

The Senior Front-end Developer builds and maintains client-facing interfaces per UI/UX designs and product requirements, owns front-end architecture and code-review standards, and mentors the Junior Front-end Developer. This is a specialized front-end role, not a full-stack position.

Key Responsibilities

•   Own front-end architecture decisions, including framework, state management, and tooling choices.

•   Set and enforce code-review, testing, and performance/accessibility standards for the pod.

•   Lead implementation of complex, high-visibility features.

•   Troubleshoot and resolve complex front-end performance or technical issues.

•   Mentor the Junior Front-end Developer, including code review and skill development.

•   Partner closely with UI/UX to ensure design fidelity and flag implementation constraints early.

•   Evaluate and recommend front-end tooling or library upgrades.

Required Skills & Technical Competencies

•   Deep expertise in a modern front-end framework (React strongly preferred) and associated ecosystem.

•   Strong understanding of front-end performance optimization and accessibility standards.

•   Experience owning front-end architecture for a production application.

Targeted Qualifications

•   5–8 years of front-end development experience.

•   Deep expertise in a modern framework (React preferred) and front-end architecture patterns.

•   Experience owning performance and accessibility standards.

•   Bachelor's degree in Computer Science or related field.

Preferred / Nice-to-Have

•   Experience with data-dense or real-time dashboard interfaces (relevant to IoT products).

•   Experience mentoring junior developers formally.

We have an existing academic journal publishing and management platform developed using:

• Next.js
• React
• Node.js
• PostgreSQL
• REST APIs

The platform is already functional and includes author, reviewer, editorial and admin workflows.

We are looking for an experienced Senior Next.js Developer / Frontend Tech Lead to work on an existing production application.

The primary requirement is to redesign and rebuild the frontend while reusing the existing backend, APIs, database and business logic wherever technically feasible.

This is not a greenfield project and we do not want unnecessary rewriting of the existing backend.

Key Responsibilities

• Study and understand the existing Next.js application and architecture.
• Review existing APIs and backend integration.
• Develop a completely redesigned, professional academic/publishing frontend.
• Convert Figma designs into clean, responsive Next.js interfaces.
• Integrate the new frontend with existing Node.js APIs.
• Maintain existing workflows and functionality.
• Work on author, reviewer, editor and admin dashboards.
• Develop responsive interfaces for desktop, tablet and mobile.
• Improve frontend performance, usability and maintainability.
• Ensure proper authentication and role-based access handling.
• Identify frontend/backend dependencies that may require minor backend changes.
• Follow clean coding standards and reusable component architecture.
• Work through Git with proper commits, branches and code reviews.
• Coordinate with UI/UX designer and QA during development.
• Ensure the redesigned application is production-ready.

Existing Modules

The existing platform includes functionality such as:

• Author registration/login
• Manuscript submission
• Manuscript tracking
• Peer-review workflow
• Reviewer dashboard
• Editorial workflow
• Publication processing
• Payment-related workflows
• Article/publication management
• Journal management
• Certificates
• Referral/credit functionality
• Admin dashboard
• Reports and operational dashboards

The exact modules and workflows will be provided during the project.

Required Skills

Must Have

• 4+ years of professional React/Next.js experience
• Strong Next.js knowledge
• React + TypeScript
• JavaScript/TypeScript
• REST API integration
• HTML/CSS
• Responsive design
• Git/GitHub/GitLab
• Experience working with existing production codebases
• Good understanding of authentication and authorization
• Ability to understand backend APIs and database relationships

Good to Have

• Node.js
• PostgreSQL
• Tailwind CSS
• Next.js App Router
• Dashboard/SaaS application development
• Experience with complex multi-role applications
• Experience with academic, publishing, research or workflow-based platforms

What We Are Looking For

We are looking for someone who can understand an existing application before changing it.

You should be comfortable working with an existing codebase rather than expecting to rebuild everything from scratch.

Strong attention to:

• UI quality
• UX
• Performance
• Clean architecture
• Reusable components
• Security
• Cross-browser compatibility
• Maintainability

is required.

Important

• Existing backend and database should be reused wherever possible.
• Do not rewrite existing functionality without approval.
• Existing production data must not be modified or exposed.
• Development will be performed in a staging environment.
• Git-based development is mandatory.
• NDA and confidentiality agreement will be required.
• Ownership of the developed code and project deliverables will belong to the company.

Selection Process

Shortlisted candidates will first be asked to:

1. Review the existing application architecture.
2. Understand the existing APIs and workflows.
3. Identify what can be reused and what needs modification.
4. Complete a small paid technical task.
5. Discuss the proposed development approach and timeline.

Candidates who demonstrate strong understanding of the existing system will be preferred.

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What Will You Be Doing?

• Translate the designs into production grade implementation for the Invoice user flows.
• Understand how to integrate with apis's using graphql or any other async library etc.
• Work cross-functionally with product, design, and other engineering counterparts to clarify and implement the requirements.
• Drive, lead, and contribute to the full software development cycle: design, development, QA, experimentation, analysis, and launch.

What Makes You the Perfect Fit?

• 5+ years of full stack software development experience with strong expertise on front-end implementation.
• Experience with modern Javascript / TypeScript frameworks such as React, Preact, Angular, Next, Vue or Meteor.
• Hands-on experience writing, optimizing, and monitoring GraphQL queries and mutations in a production environment.
• Proficient in at least one major programming language (preferably Java / Kotlin).
• Exposure to architectural patterns of large, high-scale web applications, such as well-designed APIs, modular integrations and efficient algorithms.
• Passionate about design and building UX for customer facing applications.
• Outstanding communication and interpersonal skills with strong attention to detail.

Requirements

Front End First

• Solid hands on experience with React and TypeScript or an equivalent modern framework
• Ability to convert designs into clean, functional UI without hand holding
• Comfortable building and owning end to end user flows like forms, dashboards, and workflows
• Working knowledge of performance basics, accessibility, and responsive design

GraphQL

• Practical experience consuming GraphQL APIs
• Writing queries and mutations confidently
• Understanding how to handle loading, error states, and basic caching
• Does not need to design the entire schema, but should not treat GraphQL as magic either

Backend Awareness

• Working experience in Java or Kotlin
• Ability to understand existing backend services and make incremental changes
• Familiarity with APIs, data models, and basic system interactions
• Not expected to design large systems independently, but should ask the right questions

Engineering Hygiene  

• Writes readable, maintainable code
• Comfortable with unit tests and basic integration tests
• Experience working with code reviews and CI CD pipelines
• Understands production readiness and release discipline

Product and UX Sensibility

• Good eye for design and usability
• Can spot obvious UX gaps and raise them early
• Thinks in terms of user flows, not just tasks
• Understands trade offs between speed and quality

Collaboration Skills

• Can work well with PMs and Designers
• Communicates clearly and proactively
• Takes ownership of features, not just tickets
• Receptive to feedback and able to iterate fast.