Senior Frontend Engineer - App

Frontend Developers

• Contract To Hire (Initial Engagement: 6 months)

Experience: 5+ years

Mandatory Skills:

● React.js

● React Native

● JavaScript

● Experience in developing scalable and maintainable web and mobile applications

● Frontend architecture and reusable components

● State management

● REST API/backend service integration

● Application performance optimisation

● Authentication/authorisation and frontend security

● Git and pull-request-based development

● Clean, reusable and testable code

● Agile/product development experience

● Code reviews, debugging and production issue resolution

Good to have:

● TypeScript

● Next.js

● Jest / React Testing Library

● CI/CD

● Application monitoring

● Mobile deployment

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.

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

Job Description – Senior Full Stack / Frontend Engineer

Position: Senior Full Stack / Frontend Engineer

Experience: 6+ Years

Shift Timing: 2:00 PM – 12:00 AM

Work Mode: WFO(Bangalore)

Notice Period : 0 to 15 Days.

Job Summary

We are looking for an experienced Senior Full Stack / Frontend Engineer with strong expertise in React.js, Next.js, Node.js, Microfrontends, Webpack, Git, and Bitbucket. The candidate should have hands-on experience building scalable, high-performance applications and working with tier-based service architectures.

Key Responsibilities

• Develop and maintain scalable web applications using React.js and Next.js.
• Build reusable and maintainable React components using Hooks, state management, and modern React patterns.
• Optimize application performance, rendering, and component lifecycle.
• Develop applications using Next.js SSR, SSG, ISR, App Router, Server Components, and Client Components.
• Develop and integrate REST APIs using Node.js and Express.
• Work with Node.js event loop, asynchronous programming, async/await, and authentication mechanisms.
• Design and implement Microfrontend architectures using Module Federation.
• Handle communication between independently deployed microfrontends.
• Work on deployment strategies for microfrontend applications.
• Configure and maintain Webpack for bundling, loaders, plugins, code splitting, and Module Federation.
• Follow Git/Bitbucket branching strategies and manage merge/rebase operations.
• Resolve merge conflicts and participate in Pull Request (PR) reviews.
• Work with Bitbucket Pipelines for CI/CD processes.
• Develop applications following a tier-based architecture: UI → API → Service/Business Layer → Database.
• Collaborate with developers, QA engineers, architects, and other stakeholders.
• Troubleshoot technical issues and ensure application reliability, scalability, and performance.

Required Technical Skills

• React.jsHooks
• State Management
• Performance Optimization
• Component Lifecycle
• Next.jsSSR
• SSG
• ISR
• App Router
• Server Components
• Client Components
• API Routes
• Node.jsEvent Loop
• Async/Await
• REST APIs
• Express.js
• Authentication
• MicrofrontendsMicrofrontend Architecture
• Module Federation
• Application Communication
• Independent Deployment
• WebpackBundling
• Loaders
• Plugins
• Code Splitting
• Module Federation
• Version Control & CI/CDGit
• Bitbucket
• Branching Strategies
• Merge/Rebase
• Conflict Resolution
• Pull Requests
• Bitbucket Pipelines
• ArchitectureTier-Based Services
• UI Layer
• API Layer
• Service/Business Layer
• Database Layer

Preferred Candidate Profile

• 6+ years of experience in frontend/full-stack development.
• Strong hands-on experience with React.js, Next.js, and Node.js.
• Good understanding of modern frontend architecture and Microfrontends.
• Strong debugging and problem-solving skills.
• Experience working in Agile/Scrum development environments.
• Good communication and collaboration skills.
• Willingness to work in the 2:00 PM – 12:00 AM shift. 

Job Description:

https://drive.google.com/file/d/12Fcie5u0rhyHeE_xhsNTeGk3mlPId1Mb/view?usp=drive_link

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

Job Title : React Native SDE 3

Experience : 8+ Years

Employment Type : Contract to Hire (C2H)

Location : Bangalore (Hybrid – 3 Days WFO)

Notice Period : Immediate to 15 Days

Job Summary :

We are looking for an experienced React Native Developer to join its mobile engineering team and help build scalable, high-performance applications used by millions of customers.

This is a founding React Native team opportunity where you'll play a key role in defining architecture, best practices, and driving the migration from native Android/iOS applications to React Native.

Mandatory Skills :

Strong React Native development, JavaScript/TypeScript, Mobile Application Architecture, GraphQL API Integration, Android & iOS Platform Knowledge, Mobile Performance Optimization, Accessibility Standards, CI/CD & DevOps Practices, Agile Methodologies (TDD/BDD), System Design, and experience building scalable consumer-facing mobile applications.

Required Skills :

• Strong hands-on experience in React Native development.
• Experience building and architecting mobile applications.
• Good understanding of Android and iOS platforms.
• Experience with GraphQL APIs.
• Strong knowledge of JavaScript/TypeScript.
• Experience with CI/CD, Agile, and DevOps practices.
• Knowledge of mobile performance optimization and accessibility standards.
• Strong problem-solving and communication skills.

Key Responsibilities :

• Develop and maintain React Native applications.
• Work closely with Product, Backend, QA, and Mobile teams.
• Design scalable and maintainable mobile solutions.
• Participate in coding, testing, deployment, and support activities.
• Contribute to architecture decisions and engineering best practices.

Interview Process :

1. Technical Interview (Geektrust)
2. Client Coding Round
3. Client System Design Round
4. Managerial Round (Optional)

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.

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.

Role : Senior Full Stack Engineer (Frontend Focus)

Location : Hyderabad/Bangalore/Gurgaon/Mumbai

Role Summary

We're looking for a **Senior Full Stack Engineer (Frontend Focus)** to build modern, AI-powered enterprise applications. You'll primarily focus on creating scalable, high-performance frontend experiences using React and Next.js, while contributing to backend services, APIs, and AI integrations where needed. You'll work closely with Product, Design, and AI teams to build intuitive, performant, and production-ready applications.

Minimum Qualifications

* 3–7 years of software engineering experience.

* Strong experience with React, Next.js, TypeScript, JavaScript, HTML, and CSS.

* Experience building and shipping production-grade frontend applications, including enterprise dashboards and data-intensive applications.

* Strong understanding of frontend architecture, state management (Redux, Zustand, Context API, or similar), rendering lifecycle, and performance optimization, including code splitting, lazy loading, bundle optimization, caching strategies, and Core Web Vitals.

* Experience building complex UI experiences using modern frontend technologies, including data visualization, Canvas, WebGL, Service Workers, and Web Workers.

* Experience building and integrating REST APIs and backend services using Node.js.

Preferred Qualifications

* Experience building AI-powered applications or AI agents using LangChain, LlamaIndex, CrewAI, or similar AI frameworks.

* Experience with vector databases and Retrieval-Augmented Generation (RAG) applications.

* Experience with DevOps practices and cloud platforms such as AWS, Azure, or GCP.

* Experience with Docker and Kubernetes.

* Experience building reusable component libraries, design systems, or micro-frontend architectures.