ReactJS Developer (ReactJS and Redux)

Roles and Responsibilities

What are we looking for in you?
• Technical end-to-end design for stories by collaborating with business analyst/product owner, technical architect and clients
• Implement stories end-to-end, which includes Frontend, Backends for Frontend (BFF), Caching and also service orchestration in some cases) using best engineering practices like test-driven development, SOLID principles and consideration of non-functional requirements like performance, scalability, security or cloud readiness (as applicable) at the story level
• Automates testing at unit, module and integration level as needed using tools relevant for the platform (e.g. Jasmine, Jest, Karma, Webdriver.io etc.)
• Focus on quality by implementing best practices like logging, calling out technical debt, meeting KPIs using code quality tools like SonarQube, ESLint (customize and sync with Sonar), Stylelint/Sasslint and so on.
• Hands-on with automating redundant work, like common component structure, both in terms of scaffolding as well as using the right design patterns / creating abstractions.
• Mentor junior engineers in helping review code, guiding on technical decision making
Key Requirements:
• 4-9 years’ experience
• Hands-on knowledge of HTML5, CSS3, JavaScript
• Hands-on experience working with Object Oriented JavaScript (OOJS), JavaScript - and practical uses in building complex interactive experiences, primarily with ECMAScript 2015+. You should be up-to-date with new specifications (different stages), and also, using transpilers like Babel to use features from all stages
• Good understanding of creational and structural design patterns in JavaScript
• Experience working with Single Page Applications (SPA) with universal rendering capabilities.
• Good understanding of React.js, its core principles - lifecycle methods, virtual DOM etc. and at least 6 – 12 months hands-on experience with the same
• Understanding of one-way data flow and the Flux architecture.
• Understanding of stateful (container) vs stateless (presentational) components and how to break down the application page into components
• Core understanding of how React’s state management works out of the box.
• Understanding of different CSS architectures that go hand-in-hand with React.js application development. Pros and cons of component-level CSS vs global and where to apply each
• Thorough understanding of Webpack bundler (version 2+).
• Good understanding of the Web Components standard.
• Hands-on experience with building Progressive Web Apps (PWAs) on any framework.
• Hands-on experience with Frontend Performance Optimization – especially in a React application with respect to resource loading strategy, CPU/Memory profiling on the browser.
• Hands-on experience with test-driven development using Jest or equivalent. Familiar with snapshot testing, code coverage. Experience working with utilities like Enzyme
• Experience using fluid grids, and building responsive/adaptive websites using Bootstrap etc.
• Understanding of SEO and accessibility and making it part of the development workflow
• Moderate to Strong graphics manipulation/optimization skills using Photoshop is a plus.

About Leena
Leena AI has been founded by IIT Delhi alumnus and senior industry veterans with the mantra to "Improve Employee Experience through Intelligent Conversations”.

Leena AI provides an end to end Chatbot to better the employee/candidate experience & product longevity using our capabilities in HR Chatbot. This solution ensures a reduction in query handling time for HR & improves the employee experience. Apart from this we also have out of the box modules which take care of real-time status updates for employee queries about Workday, improve employee on-boarding and exit process along with simplifying employee-manager's self-service process in the organization. We enable out of the box integration with Workday, Microsoft AD, Kronos and SharePoint for providing a superior experience to employees over the Chatbot.

At Leena AI, We are looking for a passionate Lead Front-End Developer who is proficient with React.js. You will be involved from conception to completion with projects that are technologically sound and aesthetically impressive. Therefore, a commitment to collaborative problem solving, sophisticated design, and quality products are important.

Responsibilities:
As a Lead Front-End Developer you would be responsible for:

• Leading a team, Collaborate with team to deploy and continuously improve our solutions
• Developing new user-facing features using React.js.
• Building reusable components and front-end libraries for future use.
• Translating designs and wireframes into high quality and pixel perfect code.
• Optimising components for maximum performance across a vast array of web-capable devices and browsers.
• And everything that a coder does.

Requirements:

• Strong proficiency in JavaScript, including DOM manipulation and theJavaScript object model.
• Thorough understanding of React.js and Redux its core principles.
• Familiarity with newer specifications of ECMA Script is a plus.
• Familiarity with RESTful APIs.Knowledge of modern authorisation 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.
• Ability to understand business requirements and translate them into technical requirements.
• Lead a product (would be a plus)
• Have managed a team before

We are looking for an experienced JavaScript developer who is proficient with React.js. The primary focus of the selected candidate would be on developing user interface components implementing and executing them following well-known React.js workflows (such as Flux or Redux) and especially hooks. Also ensuring that these components and the overall application are robust and easy to manage. A commitment to collaborative problem solving, sophisticated design, and quality products are important.

Responsibilities
Develop new components and features for our front-end app(s) Write, audit, and improve our test coverage Document and refactor our front-end codebase Profile and improve our front-end performance Write about your work and contribute back to open source.

Requirements
3+ years' experience working with a JavaScript framework, preferably React In-depth knowledge of JavaScript, CSS3, HTML5 and front-end languages In-depth understanding of JavaScript, the DOM, and relevant concepts Proficiency with browser based debugging and performance testing Understanding of progressive web apps (PWA) Experience with a testing framework (Jest/Mocha) Experience using Git Excellent communication skills, both written and verbal

We are looking for a skilled React.js Developer to join our front-end development team. In this role, you will be responsible for developing and implementing user interface components using React.js concepts and workflows such as Redux, Flux, and Webpack. You will also be responsible for profiling and improving front-end performance and documenting our front-end codebase.

To ensure success as a React.js Developer, you should have in-depth knowledge of JavaScript and React concepts, excellent front-end coding skills, and a good understanding of progressive web applications. Ultimately, a top-class React.js Developer should be able to design and build modern user interface components to enhance application performance.

What You Will Be Doing:

• Create highly responsive B2C web-app using a wide range of open source frontend and backend technology.
• Create single page applications using wide range of javascript & cutting edge libraries/frameworks.
• Responsible for the full lifecycle of a project, including development, unit testing, system testing and change management.
• Research technical issues and provides recommendations to enhance JavaScript products.
• Working with multiple projects.

What we are looking for:

• Bachelor’s degree in Computer Science or equivalent preferably from IIT,NIT & other premier institutes.
• Rockstar JavaScript developer, who appreciates the intricacies of JS as well as passionate to follow new trends in JS.
• Experience with product companies.
• 4-9 yrs of software development on advanced JavaScript stack (Native JavaScript, Asynchronous Request Handling, AJAX, HTML5, CSS3, etc).
• In-depth knowledge in ReactJS & NodeJS
• Proficiency in any other modern web frameworks will be a plus.
• A solid knowledge of advanced data structures & algorithms.
• Proficient in Computer Science fundamentals & object-oriented design.
• Solid understanding of cross-browser compatibility issues and ways to tackle those.
• Must possess a track record of building Single Page responsive UI.
• Experience with Databases such as NoSQL and any RDBMS will be a plus.
• Experience with transport protocols such as TCP, HTTP & WebSocket.
• Expressing and appreciating design patterns is a real addition.
• Critical of coding practices and development methodologies

- Work closely with the Product, UX, and Analyst teams to deliver great customer experiences, taking them from idea to execution. - Work on the ZoomRx suite of iOS, Android & web apps targeted at healthcare professionals - Design and develop applications for mobile devices & tablets. - Constantly evaluate new technologies, frameworks, and methodologies - Re-engineer current systems to allow for flexibility, stability, and scalability while preserving existing functionality - Zeal to work on cutting edge and scalable solutions. - You should be a self-starter with strong ability to multi-task - High on aptitude - Passionate for technology and programming - Familiarity with as many of the following languages as possible: - PHP, SQL, XML, HTML5/CSS3, Javascript, JQuery, Bash - Java (Android SDK) & Objective-C (iOS) -Excellent debugging and problem-solving skills. - Ability to work independently with high-level direction. - Consistent ability to produce quality, accurate and highly detailed work products.

Requirements: 1. Experience in responsive design using frameworks such as Bootstrap 2. Experience with JavaScript libraries and frameworks such as JQuery, Angular2+ 3. 3 to 5 years of front-end web development and programming experience 4. Expert in HTML5, CSS3 ,JavaScript, Jquery, Bootstrap 5. Basic knowledge with AJAX/JSON and web API integration 6. Good to have Basic knowledge of Server side programming eg. C# or VB .Net, Angular Material design 7. Excellent oral & written communication skills 8. A good team player with problem-solving attitude.

As a UI developer you will be primarily working on building and designing a front end application for sales-management and data platform. In this role, you will work through all facets of software development: design, prototype, implementation, testing, deployment and documentation. Prinicipal responsibilities and duties include creation of high level software design (HLSD) documents, outlining the software solutions, prepare task list as per functional spec along with timeline for small duration phase deliveries. As a senior member of team you would also be seen as someone who brings in innovation to the solution to meet functional and business requirements. You'd be working closely with product design and backend team for building middleware UI services to meet business requirements.

RESPONSIBILITIES:  1. Full ownership of Website right from driving product decisions to architect to release. 2. Develop cutting edge user experience and build cutting edge technology solutions like instant messaging in poor networks, live-discussions, live-videos optimal matching & offline personalization. 3. Deep diving into performance, power management, memory optimization & network connectivity optimization for the next Billion Indians. 4. Orchestrating complicated workflows, asynchronous actions, and higher order components.  5. Work directly with Product and Design teams. REQUIREMENTS:  1. Should have Hacked some (computer or non-computer) system to your advantage. 2. Built and managed any Website with over 1 million Monthly Visitors.  3. Strong application architectural experience.  4. Strong experience in memory management, performance tuning and resource optimizations. 5. PREFERENCE - If you are a woman or an ex-entrepreneur or having a bachelors degree from IIT/BITS/NIT. 6. Should have Proficient experience with ReactJs & Redux. It would be great if you have experience with: Progressive WebApps or  Experience with content sites / SEO pages.  Familiarity with UI-mockup tools, LESS, and tools like Grunt. P.S. If you don't fulfill one of the requirements, you need to be exceptional in the others to be considered.