React.js Developer - Bengaluru

We're at the forefront of creating advanced AI systems, from fully autonomous agents that provide intelligent customer interaction to data analysis tools that offer insightful business solutions. We are seeking enthusiastic interns who are passionate about AI and ready to tackle real-world problems using the latest technologies.

Duration: 6 months

Perks:

- Hands-on experience with real AI projects.

- Mentoring from industry experts.

- A collaborative, innovative and flexible work environment

After completion of the internship period, there is a chance to get a full-time opportunity a Software Development engineer (Up to 12 LPA).

Key Responsibilities

• Engage in the full software development lifecycle: ideation, design, development, testing, and deployment.
• Develop responsive, high-performance web applications utilizing HTML, CSS, JavaScript, and frameworks such as React, Angular, and Next.js.
• Create back-end services and APIs using Node.js, managing data with MongoDB and Supabase.
• Utilize cloud services like AWS for hosting and scaling applications.
• Collaborate on the design of efficient and scalable database schemas.
• Learn from code reviews with seasoned developers, adopting best practices and coding standards.

Requirements

• Enrollment in a Computer Science or related degree program.
• Proficiency in HTML, CSS, JavaScript, with experience in frameworks like React, Angular, or Next.js.
• Understanding of back-end development using Node.js.
• Knowledge of database technologies such as MongoDB and Supabase.
• Exposure to cloud services, particularly AWS, and familiarity with hosting principles.
• Strong problem-solving capabilities and a continuous learning mindset.
• Excellent teamwork and communication skills.
• Mandatory proficiency in GIT.

About One Impression

One Impression is one of the world’s largest influencer marketing platforms, working with 300+ global brands like Unilever, Nestle, and Amazon to connect with a diverse creator network. Our platform empowers brands and creators to collaborate seamlessly and scale their reach. To capture a significant share of global media ad spend, One Impression is quickly becoming the industry’s go-to influencer marketing platform.

About the Role

We are looking for a Frontend Engineer (SDE II) who is experienced in both React.js for Web and React Native for Mobile Apps. You will be responsible for architecting, implementing, and optimizing web and mobile applications while collaborating closely with Product, Design, and Backend teams.

This role is perfect for someone who enjoys working across platforms, building scalable systems, and enhancing the developer experience.

Key Responsibilities

• Architect and develop frontend solutions for both Web (React.js) and Mobile Apps (React Native).
• Build and optimize config-driven systems, reusable components, and common libraries.
• Work closely with Product Managers, Designers, and Backend Engineers to create seamless user experiences across platforms.
• Own and drive React Native-based mobile applications, ensuring modular, scalable, and performant code.
• Optimize web and mobile performance for speed, responsiveness, and efficiency.
• Set up and manage CI/CD pipelines for both web (Docker, Vercel) and mobile apps (Fastlane, App Store/Play Store).
• Implement and maintain state management using Redux, Redux Saga, Recoil, or MobX.
• Work with mobile-specific integrations, such as Firebase Push Notifications, Deep Linking, and Native Modules.
• Ensure cross-platform consistency by handling browser compatibility (web) and device compatibility (mobile).
• Write clean, maintainable, and reusable code, following best practices and design patterns.
• Debug and fix issues rapidly, ensuring a seamless Web & Mobile experience.
• Stay up-to-date with the latest trends and contribute to open-source projects, tech talks, and internal knowledge sharing.

Requirements

• 3-5 years of experience in frontend development, working with both React.js (Web) and React Native (Mobile).
• Strong expertise in JavaScript (ES6+), React.js, and React Native.
• Experience with bundlers like Webpack, Rollup, and Metro for React Native.
• Deep understanding of mobile CI/CD (Fastlane, App Store, Play Store) and web CI/CD (Docker, Vercel, Jenkins, GitHub Actions).
• Strong grasp of Web & Mobile performance optimization techniques.
• Experience with Redux, Redux Saga, MobX, or Recoil for state management.
• Good understanding of mobile UI/UX principles, animations (Reanimated, Gesture Handler), and responsive design.
• Basic familiarity with native iOS/Android development (Swift/Kotlin is a plus).
• Experience with Unit Testing (Jest, React Native Testing Library, Detox, Cypress, Appium, or Espresso).
• Strong debugging skills using Chrome DevTools (Web) and Flipper, Xcode, Android Studio (Mobile).
• Ability to work independently, take ownership of projects, and mentor junior engineers.
• Open to feedback and collaborative in working towards the best user experience.

Why Join One Impression?

- Be a part of one of the largest influencer marketing platforms globally, working with top brands and influencers.

- Opportunity to lead and shape a fast-growing marketplace product.

- Competitive salary and benefits package.

- A collaborative and innovative work culture in a rapidly scaling company.

Certa (getcerta.com) is a Silicon Valley-based tech product start-up that is automating the vendor, supplier, and other stakeholder onboarding processes (think background checks, agreements, and the works) for companies across industries and geographies. With multiple Fortune 500 and Fortune 1000 clients, at Certa's tech team, you will be working on stuff that is changing the way huge companies do business.

Must Haves:

• Experience developing enterprise-grade quality software.
• 3+ years of experience building large-scale front-end applications using React.
• 3+ years of experience using type-safe JavaScript-based languages, such as TypeScript.
• Understanding of modern frontend ecosystems, including Bundling(preferably using vite), Linting, Testing and Releasing
• Success with mentoring mid-level & junior Engineers.
• Experience in Agile software development methodologies.
• Experience writing automated tests (e.g., Vitetest, Cypress, Jest, Testing Library).
• Experience in building, scaling & maintaining a design system from scratch.
• Experience in improving rendering as well as delivery performance for front-end applications.
• Experience in writing semantic HTML.
• Experience in building scalable, responsive, and cross-browser-compatible web applications.
• Experience in a peak-performance organization, preferably a tech startup.
• Experience working with a remote team.
• Data analysis experience, and understanding of how analytics can help with product decisions.

Bonus:

• Experience building integrations and data synchronizations with event pub/sub-models.
• Experience with WebGL
• Experience in building offline applications using Web Workers
• Open source contributions.
• Running his/her own blog.
• Experience with building 100% keyboard and screen reader-accessible applications.
• Experience setting up and customizing JavaScript tooling and building systems.

Zolvit is seeking a highly motivated and experienced Frontend Software Engineer to join our

growing engineering team. As a key member of the team, you will play a crucial role in

designing, developing, and maintaining high-performance, user-centric frontend experiences

across web and mobile platforms. You will have the opportunity to work on challenging problems

at scale and contribute to a product that will potentially power millions of businesses in India.

Responsibilities:

● Design, develop, and deploy high-quality, user-friendly frontend applications using

modern JavaScript frameworks (e.g., Next.js, React, Angular, Vue.js).

● Develop and maintain native mobile applications for both iOS and Android platforms.

● Collaborate with backend engineers to integrate frontend applications with backend APIs

using microservices architecture.

● Write clean, efficient, and well-documented code, adhering to best practices and coding

standards.

● Collaborate with cross-functional teams, including product, design, and QA, to deliver

exceptional user experiences.

● Participate in code reviews, design discussions, and knowledge sharing sessions.

● Implement and maintain CI/CD pipelines, promoting automation and continuous delivery.

● Monitor and optimize the performance of frontend applications, ensuring a smooth and

responsive user experience.

● Champion a quality-driven development approach, including unit testing, integration

testing, and end-to-end testing.

● Stay up-to-date with the latest trends and technologies in frontend development and

mobile app development.

Qualifications:

● Bachelor's degree in Computer Science or a related field, or equivalent practical

experience.

● Proven experience in frontend software engineering, with a strong focus on building and

scaling web and mobile applications.

● Strong proficiency in JavaScript and at least one modern JavaScript framework (e.g.,

Next.js, React, Angular, Vue.js).

● Experience developing and deploying native mobile applications for iOS and Android

platforms using languages like Swift, Kotlin, or React Native.

● Solid understanding of object-oriented programming principles and design patterns.

● Experience integrating frontend applications with backend APIs, preferably within a

microservices architecture.

● Familiarity with RESTful APIs and other common API protocols.

● Experience with state management libraries and techniques (e.g., Redux)

● Experience with modern CSS frameworks (e.g., Tailwind CSS, Material UI).

● Experience with CI/CD pipelines and tools (e.g., Jenkins, GitLab CI, CircleCI).

● A strong understanding of computer science fundamentals and excellent

problem-solving and analytical skills.

● A proactive and collaborative approach to work.

● A passion for building high-quality user experiences and a commitment to continuous

improvement.

● Experience working in an Agile environment.

Bonus Points:

● Experience with GraphQL, performance optimization techniques.

● Contributions to open-source projects.

● Experience working in a fast-paced, high-growth environment..

Responsibilities:

• Design, develop, and maintain web applications using Java and React JS.

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

• Ensure the performance, quality, and responsiveness of applications.

• Identify and correct bottlenecks and fix bugs.

• Maintain code integrity and organization.

• Develop new user-facing features using React JS.

• Build reusable components and front-end libraries for future use.

• Translate designs and wireframes into high-quality code.

• Optimize components for maximum performance across a vast array of web-capable devices and browsers.

• Participate in team meetings and discussions to understand user needs and functionalities.

• Perform code reviews and improve and maintain code quality.

• Work closely with product management and back-end developers to integrate user-facing elements with server-side logic.

• Keep up-to-date with the latest industry trends and technologies to ensure applications are current and competitive.

Requirements:

• Bachelor’s degree in Computer Science, Information Technology, or a related field.

• Proven experience as a Full Stack Developer or similar role.

• Strong proficiency in Java and React JS.

• In-depth knowledge of JavaScript, CSS, HTML, and front-end languages.

• Experience with React JS workflows such as Redux, Flux, and Webpack.

• Familiarity with RESTful APIs and web services.

• Knowledge of performance testing frameworks including Mocha and Jest.

• Excellent troubleshooting skills.

• Good project management skills.

• Strong communication and teamwork abilities.

Preferred Qualifications:

• Experience with cloud services such as AWS or Azure.

• Familiarity with CI/CD pipelines and DevOps practices.

• Knowledge of database management systems like MySQL, PostgreSQL, or MongoDB.

Job Responsibilities

• Develop and maintain reusable components and front-end libraries for future use.
• Translate designs and wireframes into high-quality, responsive UI components.
• Optimize components for maximum performance across different browsers and devices.
• Implement ReactJS best practices using Hooks, HOCs, and Functional Components.
• Manage state efficiently using Redux/Flux.
• Collaborate with backend developers to integrate REST APIs.
• Debug and test applications using Mocha & Jest.
• Ensure code quality, maintainability, and scalability using modern front-end tools.

Required Skills & Qualifications

✔ 3+ years of experience in ReactJS development.

✔ Strong knowledge of JavaScript, DOM, JSX.

✔ Hands-on experience with React Hooks, HOCs, and Functional Components.

✔ Expertise in ES6+ concepts (Arrow functions, Destructuring, Spread/Rest operators, Classes, Import/Export).

✔ Experience in HTML, CSS, and responsive design.

✔ Familiarity with REST APIs and integrating backend services.

✔ Experience with state management (Redux/Flux).

✔ Strong debugging skills using Mocha & Jest for performance testing.

✔ Hands-on experience with Git, Webpack, Babel, NPM.

Good to Have:

➕ Experience with backend development (Java, Microservices).

➕ Knowledge of modern authentication mechanisms (JWT, OAuth).

We are looking to hire an experienced angularJS developer to join our dynamic team. As a lead developer, you will be responsible for creating a top-level coding-base using Angular best practices. Your role will require you to implement an exciting and streamlined user experience in the form of a Java-based desktop and mobile web-app.

To ensure success as an angularJS developer, you should have extensive knowledge of theoretical software engineering, be proficient in JavaScript, HTML, and CSS, and have excellent project management skills. Ultimately, a top-class angularJS developer can design and build a streamlined application to company specifications that perfectly meet the needs of the user.

AngularJS Developer Responsibilities:

Designing and developing user interfaces using angularJS best practices.

Adapting interface for modern internet applications using the latest front-end technologies.

Writing JavaScript, CSS, and HTML.

Developing product analysis tasks.

Making complex technical and design decisions for AngularJS projects.

Developing application codes and unit tests in AngularJS, Java Technologies, and Rest Web Services.

Conducting performance tests.

Consulting with the design team.

Ensuring high performance of applications and providing support.

AngularJS Developer Requirements:

Bachelor’s degree in computer science, computer engineering or similar.

Previous work experience as an angularJS developer.

Proficient in CSS, HTML, and writing cross-browser compatible code.

Experience using JavaScript building tools like Gulp or Grunt.

Knowledge of JavaScript MV-VM/MVC frameworks including AngluarJS.

Excellent project management skills.

Proven experience implementing front-end and back-end JavaScript applications.

Excellent communication skills.

Critical thinker and good problem-solver.