React.js Developer

Job Title: Frontend Developer (Angular)

Location: Mumbai

Experience: 5–12 Years

Role Overview

We are seeking an experienced Angular Developer with strong expertise in modern frontend technologies to build scalable, high-performance web applications. The ideal candidate will have deep experience in Angular, TypeScript, RxJs, ngRx, and a strong focus on unit testing and code quality.

Key Responsibilities

• Develop and maintain complex web applications using Angular (latest versions)
• Write clean, scalable, and maintainable code using TypeScript
• Implement reactive programming patterns using RxJs
• Manage application state effectively using ngRx (Store, Effects, Reducers)
• Design and implement reusable, performant UI components
• Ensure high code quality through unit testing (Jasmine/Karma or similar)
• Collaborate with backend teams, UX designers, and product stakeholders
• Optimize applications for maximum performance and scalability
• Participate in code reviews, architecture discussions, and technical decision-making
• Troubleshoot and debug complex application issues

Required Skills

• Strong experience with Angular (v10 or above preferred)
• Proficiency in TypeScript, JavaScript (ES6+)
• Hands-on expertise in RxJs (Observables, Operators, Subjects)
• Solid understanding of ngRx architecture and state management concepts
• Experience in Unit Testing frameworks (Jasmine, Karma, Jest, etc.)
• Knowledge of REST APIs and integration
• Familiarity with HTML5, CSS3, SCSS, and responsive design
• Understanding of frontend performance optimization techniques
• Experience with Git/version control systems

Preferred Qualifications

• Experience with CI/CD pipelines
• Exposure to micro-frontend architecture
• Knowledge of Agile/Scrum methodologies
• Familiarity with AWS/Azure or cloud-based deployments
• Strong problem-solving and analytical skills

Behavioral Competencies

• Strong communication and collaboration skills
• Ability to mentor junior developers
• Ownership mindset and attention to detail
• Adaptability in a fast-paced environment

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, 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.

Key Responsibilities:

² Develop and maintain responsive web applications using React.

² Collaborate with UX/UI designers to translate wireframes and mockups into functional code.

² Optimize applications for maximum speed and scalability.

² Write clean, maintainable, and efficient code following best practices.

² Participate in code reviews and contribute to team knowledge sharing.

² Troubleshoot and debug applications to enhance performance.

² Stay up-to-date with the latest industry trends and technologies to ensure our tech stack remains cutting-edge.

Qualifications:

² Current SDE 3 designation or equivalent experience in a senior development role.

² 5+ years of experience in software development, with a strong focus on frontend technologies, particularly React.

² Proficiency in JavaScript (ES6+), HTML, and CSS, with a deep understanding of modern web development practices.

² Experience with state management libraries (e.g., Redux, MobX) and routing solutions.

² Strong knowledge of RESTful APIs and experience with modern build tools (Webpack, Babel).

² Experience with testing frameworks (e.g., Jest, React Testing Library) and test-driven development (TDD).

² Excellent problem-solving skills and the ability to work collaboratively in a fast-paced environment.

LogiNext is looking for a technically savvy and experienced Software Engineer to take up front-end development efforts. You will design and develop elegant interfaces that exceed client expectations in terms of value and benefit. You will collaborate on scalability issues involving visualizing massive amounts of data and information. You will identify, define and communicate best practices for front end.

You are passionate about building secure, high-performing and scalable front-end applications. Your design intuition inclines towards usability, elegance and simplicity. You are biased towards open-source tools and existing frameworks. You have demonstrated strong inter-personal and communication skills.

Responsibilities

Translate wireframes into functional requirements, write well-abstracted, reusable, high-performance code for UI components Work closely with design, product management and development teams to create elegant, usable, responsive and interactive interfaces Contribute to continual improvement by suggesting improvements to user interface, software architecture or new technologies Optimize web applications to maximize speed and scale. Support diverse clients from high-powered desktop computers to low-end mobile devices Understand and coach/teach others, show a high level of ethics and team-work

Requirements

Bachelor/Master’s degree in Computer Science, Information Technology or a related field 0 to 1 years of experience in developing responsive, elegant, efficient and cross-browser front-end applications using Javascript, HTML5, CSS3 Hands on experience on various MVC frameworks, UI libraries such as ReactJS, D3.js Hands on experience on Map API’s like Google Maps, Openstreetmap and other powerful information-rich maps Familiar with UX processes and design Proven ability to drive large scale projects with deep understanding of Agile SDLC, high collaboration and leadership Excellent written and oral communication skills, judgment and decision making skills

About

Company is a platform of digital first health clinics owned and operated under one house, with each of them working together toward one mission: To help Indians lead a more fulfilling life surrounded by wellness and grace.

The business is creating a family of purposeful health platforms with personalized solutions for a particular problem in a niche segment. Each platform provides the essentials to enable an individual segment of people to lead a graceful life full of purpose and well being. You can check out the digital health clinic for men at manmatters.com and the digital health clinic for women at bebodywise.com

Role

As the lead for the frontend development team at this , you will be the sole owner of the entire FE development cycle for our consumer-facing web products in ReactJS. Also, you will be responsible for shaping up the entire system for scale and collaborating intensively with the backend and design teams to create the best consumer experiences. You would also need to control the mobile app development lifecycle on ReactNative.

Responsibilities

• Overlook development of all user-facing products in React
• 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
• Focus on code maintainability and performance of application
• Provide technical advice and assists in solving programming problems
• Use Server Side Rendering when applicable
• Enhance SEO, Analytics and overall frontend architecture for better performance

Requirements

• 4+ years of experience building frontend for consumer facing products
• 2+ years on ReactJS for consumer facing products
• 1+ years of Team Lead/Management experience
• Thorough understanding of architecting the frontend system with Server Side Rendering
• Good foundation in design and a knack for designing interactions and elegant interfaces
• Understands app development cycle
• Experience with NodeJS for Server Side Rendering/coordinating with the backend team for API requirements
• Must come up with caching solutions where required to speed up the website load speed and improve customer experience

Roles & Responsibilities:

• Meeting with the development team to discuss user interface ideas and applications.
• Reviewing application requirements and interface designs.
• Identifying web-based user interactions.
• Developing and implementing highly - responsive user interface components using React concepts.
• Writing application interface codes using JavaScript following React.js workflows.
• Troubleshooting interface software and debugging application codes.
• Developing and implementing front-end architecture to support user interface concepts.
• Monitoring and improving front-end performance.
• Documenting application changes and developing updates.

React.js Developer Requirements:

• 1-3 Years Previous experience working as a React.js Developer.
• In-depth knowledge of JavaScript, CSS3, HTML5, bootstrap and material design.
• Knowledge of REACT tools including React.js, Webpack, Enzyme, Redux, and Flux.
• Experience in Next.js, Ant design, Node.js and Python will add extra advantage but not mandatory
• Experience with user interface design.
• Knowledge of performance testing frameworks including Mocha and Jest.
• Experience with browser-based debugging and performance testing software.
• Excellent troubleshooting skills.

Skills / Requirements

· Experience: 2-5 years

· Must Have: HTML / CSS / JavaScript

· Must Have: Angular development, Exposure to NodeJs

· Good to Have: Ionic

Essential Job Duties and Responsibilities

· Work with the Project Architects & Business owners to understand requirements

· Create performant, efficient code

· Design and development of features/modules

· Code review, Testing and Deployment

· Manage, Guide and Mentor team resources.

Desired Attributes

· Understanding of good system design, reusable components, extensibility etc.


· Excellent written and spoken communication skills


· Proven working experience in web and server-side programming.

· Experience with any MVC Framework

· Hands on knowledge of any source control Git

· Understanding of web applications including security, session management, and best development practices

· Experience working in an Agile / Scrum development process will be a bonus

· Exposure to testing frameworks for the Unit test, Integration test, and automated testing

Qualification

B.E / B.Tech / M.E / M.Tech in Computer Science or Electronics & Communication / BSC IT / BCA/ MCA.

Employment Type

Full time.