Sr. Frontend Developer

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

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)

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

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.

We want a highly experienced engineer with expertise as follows:

● React Native: very high level of proficiency; this should be a core strength

● JavaScript / TypeScript: very high level of proficiency

● React: high proficiency, with strong experience building customer-facing web

applications

● Mobile application development: very strong understanding of app architecture,

performance, debugging, reliability, and release quality

● Python / backend systems: medium to high proficiency; comfortable contributing to

APIs and backend workflows

● Performance optimization: strong experience improving responsiveness and efficiency

across application and processing layers

● Database design and caching: solid experience designing efficient data access

patterns and improving performance of critical operations

● AWS / S3 / async pipelines: working experience, especially in systems involving

uploads, processing, and media workflows

● Developer tools and local development workflows: strong experience improving

engineering productivity and reducing friction in how teams build, test, and ship

● Swift / native iOS development: nice to have, but not required

● Product thinking / customer empathy: strong ability to understand user needs, work

through ambiguity, and help shape product direction

The ideal candidate has strong experience building polished, production-quality applications in

React Native and React, and is comfortable contributing across backend systems where

needed. This person should be excited to understand customer workflows closely and help

shape product direction, not just execute tickets.

What you’ll do

You will work on high-impact product and platform problems, including:

● Building and improving the core React Native application used by customers in the field

● Developing mobile product experiences that help customers capture, review, and act on

ergonomics risk insights

● Building frontend UI for critical new features in the web application using React

● Improving app performance, responsiveness, reliability, and release quality across

mobile and web

● Improving the speed and reliability of video ingestion and re-encoding into web-playable

formats

● Implementing intelligent caching and data access patterns to speed up critical database

operations

● Improving developer tools and local development workflows across mobile, web, and

backend systems

● Contributing to backend services and APIs that power our mobile and web experiences

● Supporting native iOS integrations where needed

● Working closely with product, customers, and the broader engineering team to turn

real-world operational pain points into shipped product improvements

Responsibilities

● Own major product features end-to-end, from product thinking through implementation

and release

● Build high-quality, performant mobile experiences using React Native

● Build intuitive, reliable web experiences using React

● Contribute to backend services and APIs in Python that support product workflows

● Improve app quality through better testing, debugging, observability, and engineering

workflows

● Identify and resolve bottlenecks in video, processing, storage, and database systems

that affect product performance

● Help define engineering best practices for application quality, release processes, and

developer productivity

● Collaborate cross-functionally with product and customer-facing teams to prioritize the

right problems

● Raise the technical bar through strong code reviews, debugging discipline, and

pragmatic architectural decisions

Must-have qualifications

●8-14 years of professional software engineering experience

● Strong hands-on expertise in React Native

● Strong hands-on expertise in JavaScript/TypeScript

● Strong experience with React

● Experience building and shipping production-quality mobile applications

● Strong understanding of mobile architecture, app lifecycle, performance, and debugging

● Experience building customer-facing web applications

● Experience working with backend APIs and full-stack product development

● Experience improving developer productivity through tools, local development setups,

testing workflows, or internal engineering systems

● Strong product sense and ability to translate ambiguous customer needs into scoped

technical solutions

● Excellent communication skills and a high degree of ownership

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.

Where You’ll Create Impact

·         Build & Ship: Architect, build, and deploy production-grade iOS and Android features using React Native + TypeScript from scratch to store release.

·         Pipeline Ownership: Own the full release lifecycle using Expo + EAS, managing App Store/Play Store submissions, provisioning, and CI/CD.

·         Craftsmanship: Turn complex Figma designs into ultra-fast, polished components with fluid animations, backed by clean API integrations and rock-solid performance.

·         Systems Thinking: Scale mobile infrastructure to handle heavy data flows, offline sync, and real-time enterprise AI features seamlessly.

What Sets You Up for Success

·         5+ years of hardcore mobile engineering experience (Android/iOS foundation, ideally within high-growth, high-intensity startups).

·         Outlier Agency: High-integrity work ethic, extreme initiative, and zero need for hand-holding.

·         Performance Obsession: Track record of shipping silky-smooth, high-performance apps with complex UI, animations, and tight memory management.

·         Release Mastery: Deep comfort with Figma-to-code workflows and navigating the entire release cycle from local IDE to live store deployments.

·         Quality Mindset: Hands-on experience with unit testing, end-to-end QA pipelines, and production monitoring.

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

What we need:

•        Experience in both Web + Mobile development

•        Strong understanding of APIs & system design

•        Ability to build end-to-end features

·      Maintain version control and documentation using Git / GitHub.

Roles and Responsibilities

• Design and develop responsive web applications using React.js / Next.js.
• Build and maintain scalable RESTful APIs using Node.js and Express.js.
• Implement user authentication and authorization using JWT / OAuth2.
• Manage and optimize database structures using MongoDB or MySQL.
• Integrate front-end and back-end components seamlessly for smooth user experience.
• Collaborate with UI/UX designers and product teams to deliver high-quality features.
• Participate in Agile / Scrum sprints, daily stand-ups, and code reviews.
• Optimize applications for speed, performance, and security.
• Maintain version control and documentation using Git / GitHub.

Troubleshoot and debug production issues efficiently.

Job Location- Bangalore,

Candidates from Tamil Nadu willing to relocate to Bangalore can also apply.