ReactJs Developer

Role & Responsibilities:

Design and develop mobile applications using React Native.

Collaborate with cross-functional teams to define, design, and ship new features.

Ensure performance, quality, and responsiveness of applications.

Debug and fix issues, improve application performance, and maintain code quality.

Work onsite with the client team in Trichy.

Requirements:

Minimum 2 years of hands-on experience in React Native mobile app development.

Strong knowledge of JavaScript/TypeScript and mobile UI/UX principles.

Experience with REST APIs, third-party libraries, and integration.

Ability to work independently and in a team environment.

Immediate availability preferred.

📢 Hiring: React Native (Mobile Application Developer )

📍 Location: Onsite – Trichy

🕒 Experience: 2+ Years

📄 Type: Contract (Immediate Joiners Preferred)

Role & Responsibilities:

Design and develop mobile applications using React Native.

Collaborate with cross-functional teams to define, design, and ship new features.

Ensure performance, quality, and responsiveness of applications.

Debug and fix issues, improve application performance, and maintain code quality.

Work onsite with the client team in Trichy.

Requirements:

Minimum 2 years of hands-on experience in React Native mobile app development.

Strong knowledge of JavaScript/TypeScript and mobile UI/UX principles.

Experience with REST APIs, third-party libraries, and integration.

Ability to work independently and in a team environment.

Immediate availability preferred.

Key Responsibilities

• Develop, maintain, and enhance cross-platform mobile applications for Android and iOS using React Native.
• Build responsive, user-friendly mobile interfaces with a strong focus on performance and usability.
• Integrate mobile applications with REST APIs and backend services.
• Work with React Native WebView to integrate web-based functionality into mobile applications.
• Implement navigation, state management, push notifications, deep linking, and other mobile app features.
• Debug, troubleshoot, and optimize applications for performance, stability, and reliability.
• Integrate third-party SDKs, libraries, and services into mobile applications.
• Work with native Android and iOS configurations when required.
• Manage app builds, releases, and deployments to the Google Play Store and Apple App Store.
• Collaborate with designers, backend developers, and the product team to deliver high-quality features.
• Write clean, reusable, and maintainable code while following development best practices.
• Participate in code reviews, testing, and continuous improvement of mobile applications.

Must-Have Qualifications

• Hands-on experience with React Native and mobile application development.
• Strong understanding of JavaScript, ES6+, and React fundamentals.
• Good knowledge of React Hooks, functional components, and state management.
• Experience integrating REST APIs and handling asynchronous operations.
• Familiarity with mobile navigation, app lifecycle, and platform-specific behavior on Android and iOS.
• Experience with Git and version control workflows.
• Understanding of responsive layouts, and mobile UI development.
• Knowledge of debugging, performance optimization, and error handling.
• Ability to troubleshoot issues independently and deliver reliable solutions.

Good-to-Have Qualifications

• Experience with TypeScript.
• Familiarity with React Native WebView and hybrid mobile applications.
• Experience with push notifications using Firebase Cloud Messaging or similar services.
• Knowledge of native Android development using Java/Kotlin or iOS development using Swift.
• Experience with Fastlane, CI/CD pipelines, and automated mobile app builds.
• Familiarity with publishing and maintaining apps on the Google Play Store and Apple App Store.
• Experience with Firebase, analytics, and third-party SDK integrations.
• Knowledge of Node.js and backend API development.

Soft Skills

• Strong problem-solving skills and attention to detail.
• Ability to learn new technologies and adapt to changing requirements.
• Good communication and collaboration skills.
• A proactive attitude with a willingness to take ownership of tasks.
• Ability to work effectively in a fast-paced startup environment.
• Passion for building high-quality mobile applications and improving user experiences.

Why Join Toolstr?

• Work with a fast-growing startup building products for the global Shopify ecosystem.
• Get hands-on experience building and shipping real-world mobile applications.
• Work on challenging technical problems across Android, iOS, and web technologies.
• Learn, grow, and take ownership of features from development to release.
• Be part of a collaborative team that values innovation, initiative, and continuous learning.

Technology Stack: Next.js, Express.js, PostgresSQL, GCP

Location: Ahmedabad

About Medflix - empowering healthcare professionals for better care

Medflix (www.medflix.app/app) is a platform where healthcare professionals (doctors, medical students and more) stay updated through live talks, Q&As, support material and more. Through the platform we believe that these professionals can be empowered to deliver better care to patients (like our families) throughout the globe.

In its current (and evolving) form, it is a live learning and engagement platform seeing tremendous week-on-week growth through stellar speakers and a very active early community. The product is in the growth stages and you will be playing a key role in steering the tech to create a scalable and lovable product experience.

We are backed by startup, VC and PE veterans including Kunal Shah (CEO, Cred), Raghunandan G (Zolve, ex-TFS), Avnish Mehra (Everstone) and more.

Medflix is a platform by PlexusMD (www.plexusmd.com/app), a network trusted and loved (4.4 stars on Playstore and 4.4 on Appstore) by more than 3 lakh doctors in India and working closely with leading healthcare providers and companies like AIIMS, Jaslok, Hinduja, Apollo, HCG, Elsevier, Association of Physicians of India, Indian Association of Cardio-thoracic surgeons, Society of Nuclear Medicine, Govt of Gujarat (HFW Dept), Govt of Haryana (SIFHW), McKinsey and company, Takeda, Mankind and others.

About the Role

Tech stack (expertise in all is not required, experience in some will be sufficient):

• React / Next.js (required, at least 1 year of experience)
• Express.js (required, at least 1 year of experience)
• Familiarity with cloud services (gcp / azure / aws)
• PostgreSQL (or expertise in any relational database)
• Redis
• Docker/Kubernetes deployment (good to have)

For this role we are looking for engineers with an entrepreneurial mindset, an understanding of how startups operate and who like to get their hands dirty when unknown things come their way. You will work closely with the product team to prioritise and ship features with a predictable cadence.

As this role is full-stack, you need to have a good understanding of frontend design and be obsessed with responsiveness and pixel-perfect behaviour. On the backend side, an OCD for efficiency and optimisation is a required personality trait.

Demonstrated history of solving hard problems (frontend/backend or both) is a great-to- have.

Benefits and growth

While we ensure competitive compensation (plus ESOP options for deserving candidates), at Medflix, you will also have a strong say in how final solutions look. You will get the opportunity to learn to steer an accelerating rocket ship.

College credentials, background or years of experience are no bar for growth inside the company for enthusiasts who believe in our mission and demonstrate that passion to create a product that healthcare workers love. 

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.

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
• Staying up-to-date with the latest industry trends and technologies
• Troubleshooting and debugging issues to ensure smooth user experiences
• Participating in code reviews to maintain code quality and consistency

Required React developer requirements, qualifications & skills:

• Proficiency in React.js and its core principles
• Strong JavaScript, HTML5, and CSS3 skills
• Experience with popular React.js workflows (such as Redux)
• Familiarity with RESTful APIs and integration
• Knowledge of modern authorization mechanisms, such as JSON Web Tokens
• Understanding of front-end build tools and pipelines
• Excellent problem-solving and communication skills
• A strong attention to detail, and a passion for delivering high-quality code
• Adaptability to changing project requirements and priorities
• Experience with version control systems (e.g., Git)
• A degree in computer science, software engineering, or a related field

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

Apply here (application form): https://forms.gle/EVnJ9dPSjHg5WzqH7

SuperKalam (YC W23) is building the best AI tutor platform out of India, in the vein of Duolingo. This is a high impact role. We are eager to talk to a Mobile Engineer with an amazing sense of quality in engineering deliverables and strong ownership.

Requirements

• Ideally 2 to 4 yrs of experience building mobile apps + backend (React Native and NodeJS/NestJS)
• Strong engineering fundamentals, loves great architecture and writes scalable code
• Uses AI in workflow beyond prompting: skills, plugins, workflows, loops, agents
• Mobile: high quality UI and smooth animations; handled performance, optimized app builds, push notifications. Bonus: bridges, widgets, own libraries
• Backend: CRUD APIs, Redis, queues, caching, PostgreSQL / MySQL, rate limiting, basics of scaling and security, cloud (AWS, Azure or GCP). Bonus: Elasticsearch
• Preferred: Gen AI engineering (production AI pipelines, agentic workflows, voice agents, RAG / knowledge graphs). Bonus: Python

Responsibilities

• Build new features and initiatives across backend and the mobile app
• Deployments, performance, push notifications
• Set up tooling and run experiments: crons, automation workflows, AI tooling
• Product and design reviews
• Keep pushing the team's tech quotient with evolving technology and AI tooling
• Decide for speed to production plus quality for today

Who will thrive here: 2+ yrs in a product based startup (including internship), enjoys complex engineering and product problems, engineering mindset (scripts, automation, quick dashboards), ownership mindset and a strong individual contributor, first principle thinking and clear communication.

Compensation: 15 to 35 LPA based on experience. ESOPs for the right candidate.

Interview: resume shortlisting, 30 min intro meet, 1h 15m in-person fundamentals round (JS/TS, no DSA), 1h 15m in-person system design (LLD), optional 2-3 day fullstack mobile assignment, optional 1h 15m system design (HLD).

Location: Bengaluru. Full-time. Full JD: https://www.ycombinator.com/companies/superkalam/jobs/2gkQmXq-mobile-engineer-react-native-fullstack

Position Title:

SDE Intern – Mobile Application

Location: Bangalore

Duration: 6 months (with potential for full-time conversion based on performance)

About PGAGI:

At PGAGI, we believe in a future where AI and human intelligence coexist in harmony, creating a world that is smarter, faster, and better. We are not just building AI; we are shaping a future where AI is a fundamental and positive force for businesses, societies, and the planet.

Key Responsibilities:

• Develop and maintain cross-platform mobile applications using Flutter or React Native.

• Collaborate with UI/UX designers and backend developers to deliver seamless app experiences.

• Integrate RESTful APIs and work with JSON data parsing, asynchronous programming, and real-time data handling.

• Participate in regular code reviews and follow best practices in mobile development.

• Debug and troubleshoot issues, optimize app performance, and write unit tests.

• Learn and apply Git-based version control, task tracking, and agile workflows.

⸻Required Skills & Knowledge :Programming & Frameworks:

• Proficiency in Dart (Flutter) or JavaScript/TypeScript (React Native).

• Good understanding of OOP and functional programming principles.

• Experience with:

• Flutter: Widgets, navigation, state management (Provider, Bloc, etc.)

• OR React Native: Components, Redux, Context AP

IComputer Science Fundamentals:

• Basic understanding of data structures (arrays, stacks, queues, hash tables).

• Knowledge of basic algorithms (sorting, searching).

• Awareness of time complexity and code efficiency.

• Solid grasp of programming concepts like variables, loops, conditionals.

Mobile Development Concepts:

• Experience in building and deploying cross-platform mobile apps.

• Understanding of responsive design, Material Design, and iOS Human Interface Guidelines.

• Familiarity with asynchronous operations (async/await, Promises) and REST API integrations.

Networking & APIs:

• Basic knowledge of HTTP/HTTPS, request methods, and status codes.

• Hands-on experience using Postman or similar tools for API testing.

• Understanding of API security, including authentication and SSL basics.

Tools & Technologies:

• Familiarity with Git (GitHub, GitLab, Bitbucket).

• Experience using IDEs like Android Studio, VS Code, or Xcode.

• Awareness of unit testing frameworks (e.g., Flutter test, Jest).

• Understanding of build tools such as Gradle or Metro bundler.⸻

Preferred Qualifications:

• Pursuing or recently completed a B.E./B.Tech in Computer Science, IT, or related fields.

• Portfolio of previous mobile app projects (GitHub/Play Store link preferred).

• Willingness to learn, experiment, and work in a collaborative environment.

⸻What We Offer:

• Opportunity to work on real-world projects with direct mentorship from industry experts.

• Certificate of Internship and potential PPO (Pre-Placement Offer) based on performance.

• Exposure to modern product development practices and cross-functional team collaboration.

Skill: React+Node

BPM ID: 114488-23

Budget: Max 15 LPA

Location: HP Bellandur office

Experience: 4+

Note: Only Immediate Joiner’s pls very urgent requireemnt

We are seeking a skilled React & Node.js Developer to join our development team. The ideal candidate will be responsible for building scalable web applications using modern frontend and backend technologies. You will work closely with cross-functional teams to design, develop, and maintain high-performance applications.

Key Responsibilities

• Develop responsive and user-friendly web applications using React.js
• Build scalable backend services and APIs using Node.js and Express.js
• Design and manage RESTful APIs
• Integrate frontend and backend systems
• Work with databases such as MongoDB / MySQL / PostgreSQL
• Write clean, maintainable, and efficient code
• Perform code reviews and participate in agile ceremonies
• Troubleshoot and debug applications
• Optimize applications for performance and scalability

Required Skills

• Strong experience in React.js (Hooks, Redux/Context API)
• Solid experience with Node.js and Express.js
• Good understanding of JavaScript (ES6+)
• Experience with REST APIs
• Knowledge of database systems (MongoDB, MySQL, or PostgreSQL)
• Familiarity with Git version control
• Understanding of authentication & authorization (JWT, OAuth)
• Basic knowledge of cloud platforms (AWS/Azure/GCP) is a plus