React.js Developer

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.

·      7+ years of professional experience in front-end development.

·      5+ years of hands-on experience with React.js and its ecosystem (Redux, Context API, Hooks, etc.)

·      3+ Years Exp as Lead

·      Strong understanding of JavaScript (ES6+), HTML5, and CSS3.

·      Experience with RESTful APIs, GraphQL, and WebSocket integration.

·      Proficiency in modern build tools (Webpack, Vite, Babel, etc.).

·      Expertise in state management libraries (Redux, MobX) and React Query.

·      Solid understanding of UI/UX principles and responsive design.

·      Experience with testing frameworks (Jest, React Testing Library, Cypress, etc.).

Familiarity with modern CI/CD pipelines and version control tools (Git).

React.js, Java Script, Redux, React,React.js,Angular,Frontend Developer, UI Developer, Full Stack Developer

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).

• Delivering a complete front end application
• Ensuring high performance on mobile and desktop
• Writing tested, idiomatic, and documented JavaScript, HTML and CSS
• Coordinating the workflow between the graphic designer, the HTML coder, and yourself
• Cooperating with the back-end developer in the process of building the RESTful API
• Communicating with external web services

 Skills and Competencies:

• Proficiency with JavaScript, TypeScript, HTML and CSS
• Fundamental Knowledge of an SPA (Single page application)
• Deep knowledge of AngularJS practices and commonly used modules based on extensive work experience
• Ability to provide SEO solutions for single page apps
• Thorough understanding of the responsibilities of the platform, database, API, caching layer, proxies, and other web services used in the system
• Validating user actions on the client side and providing responsive feedback
• Writing non-blocking, optimized, reusable and scalable code
• Creating custom, general use modules and components which extend the elements and modules of core Angular
• Experience with building the infrastructure for serving the front-end app and assets
• Architecting and automating the build process for production, using task runners or scripts
• Creating configuration, build, and test scripts for Continuous Integration environments
• Proficient understanding of code versioning tools such as git is required
• Excellent presentation, problem-solving and team working skills

Qualification and Experience:

• B.E. / B. Tech. / MCA / PGDCA / M.Sc. (CS) /M.E. / M. Tech
• At least 2 years of experience in Web Application Development with Angular/React
• Proven expertise in testing of application software to assure accuracy, integrity, completeness to achieve desired results
• Experience with AngularJS (v1.x.x) would be a value-add

• You're proficient in React.JS and strong frontend javascript foundation 
• Knowing Web3.js integration is a definite plus but not a requirement
• You have a passion for writing code as well as understanding and crafting the ways systems interact
• You have experience deploying to and implementing solutions in AWS
• You believe in the benefits of agile processes and shipping code often
• You are pragmatic and work to coalesce requirements into reasonable solutions that provide value

• Deploy well-tested, maintainable and scalable software solutions
• Take end-to-end ownership of the technology stack and product 
• Collaborate with other engineers to architect scalable technical solutions
• Embrace and improve our standards and processes to reduce friction and unlock efficiency

Current Ecosystem : 
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Metaverse : https://shib.io/#/" target="_blank">https://shib.io/#/

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Game: Shiba Eternity on iOS and Android

Job Summary
. Developing the latest user-facing features using React.js
· Designing a modern highly responsive web-based user interface
· Building reusable components and front-end libraries for future use
· Translating designs and wireframes into high-quality code
· Learn and understand user interactions
· Optimizing components for maximum performance across a vast array of web-capable devices and browsers
· Coordinating with various teams working on distinct layers
· As a React.js Developer, you will be involved from conception to completion with projects that are technologically sound and aesthetically impressive.

Technical skills:
· Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model
· Thorough understanding of React.js and its core principles
· Ability to create a reusable stateful component using React hooks
· Prior experience with popular React.js workflows (such as Flux or Redux)
· Familiarity with more current specifications of EcmaScript
· Prior experience with data structure libraries (e.g., Immutable.js)
· Knowledge of isomorphic React is a plus
· Familiarity with RESTful APIs
· Familiarity with HTML / CSS
· GIT experience is a plus
· Knowledge of modern authorization mechanisms, such as JSON Web Token
· Familiarity with modern front-end build pipelines and tools
· Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
· Familiarity with working with the siren-JSON schema for generating forms.
· Familiarity with react-hook-form
· Ability to understand business requirements and translate them into technical requirements
· A knack for benchmarking and optimization
· Familiarity with code versioning tools
· jest and enzyme for red-green tdd
· understanding of feature flag
· lint and husky hooks

Hiring For

Front-End Engineer - I / II / III

Radical is a platform connecting data, medicine and people -- through machine learning, and usable, performant products. Software has never been the strong suit of the medical industry -- and we are changing that. We believe that the same sophistication and performance that powers our daily needs through millions of consumer applications -- be it your grocery, your food delivery or your movie tickets -- when applied to healthcare, has a massive potential to transform the industry, and positively impact lives of patients and doctors. Radical works with some of the largest hospitals and public health programmes in India, and has a growing footprint both inside the country and abroad. 

As a Full Stack Engineer at Radical, you will:

• Work closely with all stakeholders in the healthcare ecosystem - patients, doctors, paramedics and administrators - to conceptualise and bring to life the ideal set of products that add value to their time
• Write code on the front-end, the back-end and anything it takes to solve the problems and delight users both internally and externally
• Build systems which have an extraordinary emphasis on capturing data that can help build better workflows, algorithms and tools
• Work on high performance systems that deal with several million transactions, multi-modal data and large datasets, with a close attention to detail

We’re looking for someone who has:

• Familiarity and experience with writing working, well-documented and well-tested code in at least two of the following: React/Redux (preferred), NodeJS (preferred), Golang and Python
• Proficiency in the features of the language they are using, with knowledge of standards and best practices (Eg: ES2015 and above, Python 3.5 and above, React Hooks/HOC/Redux)
• Knowledge of databases, and familiarity with REST API patterns
• Experience integrating with a wide variety of external tools and services
• Experience navigating AWS and leveraging appropriate services and technologies rather than DIY solutions (such as hosting an application directly on EC2 vs containerisation, or an Elastic Beanstalk)

It’s not essential, but great if you have:

• An established track record of building systems from scratch
• Experience with microservices and decomposition of monolithic architectures
• Proficiency in automated tests
• Proficiency with the linux ecosystem
• Experience in deploying systems to production on cloud platforms such as AWS
• Experience in TypeScript
• Meaningful open source contributions 

The position is open now, and we are onboarding immediately. 

Please write to us with an updated resume, and one thing you would like us to see as part of your application. This one thing can be anything that you think makes you stand apart among candidates: it can be an interesting hobby project that you’ve self-hosted, a research paper that’s been published, a collection of blog posts you’ve written, a repository you maintain, or your contributions to a major library. 

Radical is based out of Delhi NCR, India, and we look forward to working with you!

We're looking for people who may not know all the answers, but are obsessive about finding them, and take pride in the code that they write. We are more interested in the ability to learn fast, think rigorously and for people who aren’t afraid to challenge assumptions, and take large bets -- only to work hard and prove themselves correct. You're encouraged to apply even if your experience doesn't precisely match the job description. Join us.