Frontend Tech Lead

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.

Front-End Developer (React.js) – Mumbai | Immediate Joiners

Location: Mumbai

Experience: 2+ Years

Job Type: Full-Time

Notice Period: Immediate Joiners Only

About the Role

We are hiring a Front-End Developer to join our product engineering team. The ideal candidate has experience working in product-based companies and has contributed to at least one end-to-end e-commerce platform project.

Key Responsibilities

• Develop and maintain responsive UIs using React.js
• Convert UI/UX designs into reusable front-end components
• Optimize components for performance and cross-browser compatibility
• Integrate front-end with backend RESTful APIs
• Collaborate with product, design, QA, and backend teams
• Participate in code reviews, agile ceremonies, and testing

Required Skills

• Strong in JavaScript (ES6+), React.js, HTML5, CSS3
• Experience with Redux/Zustand for state management
• Knowledge of REST APIs, responsive design, and Git
• Familiarity with debugging and front-end performance optimization

We are looking for a skilled and motivated React Developer with 5–8 years of hands-on experience to join our growing team in Chennai. The ideal candidate should have strong proficiency in front-end development using React.js, with a solid understanding of modern web technologies, best practices, and Agile methodologies. Experience with Ember.js is also required.

Key Responsibilities:

• Develop and maintain scalable web applications using React.js and Ember.js.
• Build reusable components and front-end libraries for future use.
• Translate UI/UX designs and wireframes into high-quality, responsive code.
• Optimize components for maximum performance across a wide range of devices and browsers.
• Collaborate closely with UI/UX designers, backend developers, and product managers.
• Participate in code reviews, testing, and debugging activities.
• Stay updated with the latest trends and best practices in front-end development.

Required Skills:

• Strong proficiency in JavaScript, HTML5, and CSS3.
• Hands-on experience with React.js, including Redux and React Hooks.
• Experience with Ember.js in production-grade applications.
• Familiarity with RESTful APIs and integrating frontend with backend services.
• Experience using front-end build tools and workflows (e.g., Webpack, Babel, NPM).
• Good understanding of version control systems like Git.
• Exposure to Agile development methodologies and practices.

Job Title: React Lead Developer

Location: Airoli, Mumbai

Work Mode: Work from Office (WFO) – Full-time

About the Role:

We are seeking a highly skilled and experienced React Lead Developer to join our growing team in Airoli, Mumbai. The ideal candidate will lead front-end development efforts, mentor developers, collaborate closely with cross-functional teams, and play a key role in delivering scalable, high-performance web applications.

Key Responsibilities:

• Lead the design and development of responsive web applications using React.js
• Collaborate with UX/UI designers, product managers, and backend teams to deliver high-quality products
• Write clean, maintainable, and well-documented code
• Optimize applications for performance and scalability
• Conduct code reviews and ensure coding best practices are followed
• Mentor and guide junior developers in the team
• Participate in architectural discussions and contribute to tech strategy
• Keep up with emerging trends and technologies in frontend development

Required Skills & Experience:

• 6+ years of experience in frontend development, with at least 3 years in React.js
• Strong proficiency in JavaScript (ES6+), HTML5, CSS3, Redux, and REST APIs
• Experience with React Hooks, Context API, and component-based architecture
• Familiarity with Webpack, Babel, and modern build tools
• Experience with version control tools like Git
• Exposure to Agile methodologies and CI/CD pipelines
• Strong problem-solving and debugging skills
• Excellent communication and leadership qualities

Nice to Have:

• Experience with TypeScript, Next.js, or React Native
• Exposure to cloud platforms (AWS/Azure)
• Familiarity with testing frameworks (Jest, Cypress, etc.)

Education:

Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field

We are seeking a talented Front-End Developer based in India to work with us on an ongoing freelance or contract basis. As a key member of our team, you’ll handle a variety of tasks, including resolving technical issues, implementing site updates, customising Shopify themes, optimising user experiences, and ensuring seamless site performance.

The ideal candidate has expertise in HTML, CSS, JavaScript (React.js, Vue.js, or similar), and Shopify theme development, with a strong understanding of responsive design, debugging, and cross-browser compatibility.

Also has experience with SEO, Shopify Plus, or basic back-end development.

Responsibilities:

• Design the overall architecture of the web application.
• Maintain code integrity, and quality, and ensure responsiveness of applications.
• Address and improve any technical issues.
• Building reusable components and front-end libraries for future use.
• Must have strong experience in designing and maintaining a database.
• Work with modern frameworks and design patterns, minimum one-year experience with Full stack paradigm required.
• Handle technical queries raised by the development team and provide support and guidance to them.
• Troubleshoot and debug issues, perform testing, and optimize application performance
• Collaborate with front-end and back-end engineers to design and create advanced, elegant, and efficient systems.

Skills:

• Strong proficiency with 3 - 5 years of experience.
• Expertise in Laravel and a good understanding of other core PHP frameworks using REST APIs.
• Professional, definite communication skills.
• Excellent knowledge of HTML, CSS, Ajax, jQuery, and JavaScript.
• Extensive experience in designing and maintaining databases such as MySQL.
• Mastery of CMS such as WordPress and Magento is an advantage.
• Comprehensive knowledge of version controlling – GIT.
• Creating self-contained, reusable, and testable modules and components.
• Optimizing client and server-side code for maximum speed.

Job Description: We are looking for a UI Developer HTML & CSS Developer responsible for the client side of our service. Your primary focus will be to implement a complete user interface in the form of a desktop and mobile web app, with a focus on performance.

Key Skills: HTML5, CSS3, Bootstrap, Jquery and JavaScript.

Responsibilities:

• Participating in design and development activities as required for specific projects allocated
• Understand the project requirement and able to implement and complete the allocated modules independently.
• Follows established development and testing procedures to ensure quality software development which meets the requirements
• Creates and maintains documentation regarding systems being developed in order to ensure long-term maintainability

Requirements:

• BTech or equivalent degree from a reputed institute
• Proven hands-on Software Development experience
• Design & Develop HTML5 games with the help of HTML5, CSS3, JavaScript, AJAX, SVG, Pixijs library across multiple platforms(Web/ MobileTablet/ TV)
• Building reliable and efficient code for game projects
• Should understand build milestone process and meet project timeline.
• Helps drive the delivery of successful, cutting edge products by working on a team with other Developers, and Designers
• Work towards optimization and best practices, increase performance of our application
• 1 to 3+ years of development experience. (Preferably Gaming)
• Good knowledge of HTML5, CSS3, JavaScript, AJAX, SVG, JSON
• Strong understanding of Object-Oriented Programming, and Design Patterns for Games and Web Applications
• Familiarity with any of the current generation JavaScript frameworks like PixieJS, CreateJs, Starling etc
• Strong attention to detail and knowledge of robust quality assurance practices
• Strong testing, debugging, and analytical skills

We are looking for programmers with a keen eye for design for the position of Front End Developer. Front end Developers are responsible for ensuring the alignment of web design and user experience requirements, optimizing web pages for maximum efficiency and maintaining brand consistency across all web pages, among other duties.

Front End Developers are required to work in teams alongside Back end Developers, Graphic Designers, and User Experience Designers to ensure all elements of web creation are consistent. This requires excellent communication and interpersonal skills.

• Determining the structure and design of web pages.
• Ensuring user experience determines design choices.
• Developing features to enhance the user experience.
• Striking a balance between functional and aesthetic design.
• Ensuring web design is optimized for smartphones.
• Building reusable code for future use.
• Optimizing web pages for maximum speed and scalability.
• Utilizing a variety of markup languages to write web pages.
• Maintaining brand consistency throughout the design.

• Degree in Computer Science or related field.
• Understanding of key design principles.
• Proficiency with HTML, CSS, JavaScript and jQuery.
• Understanding of server-side CSS.
• Experience with graphic design applications such as Adobe Illustrator.
• Experience with responsive and adaptive design.
• Understanding of SEO principles.
• Good problem-solving skills.
• Excellent verbal communication skills.
• Good interpersonal skills.