Frontend Developer

Job Title : Lead Web App Developer – Frontend

Experience : 10+ Years

Location : Bengaluru

Work Mode : Hybrid (3 days in office)

Role Overview :

We are seeking a Lead Frontend Engineer to build and maintain responsive, cloud-based web applications. This role involves developing efficient user interfaces using React.js, collaborating closely with UX and backend teams, and ensuring high-quality code.

Key Responsibilities:

• Frontend Development: Create and maintain web applications using React.js, HTML, CSS, and JavaScript/TypeScript.
• Collaboration: Work with UX designers to deliver excellent user experiences and ensure seamless backend integration.
• Code Quality: Write clean, efficient, and maintainable code while staying updated with modern practices.
• Build & Deployment: Manage build pipelines with Jenkins, deploy to CDNs, and leverage GCP for scalable solutions.
• Technical Expertise: Implement JavaScript frameworks and libraries for web analytics and use Git for version control.

Requirements:

Technical Skills:

• Proficiency in React.js, HTML, CSS, JavaScript/TypeScript, and Node.js frameworks.
• Strong debugging and problem-solving skills.
• Exposure to RDBMS and SQL (preferred).

Soft Skills:

• Excellent communication and collaboration abilities.
• Leadership skills to guide and inspire a team of developers.
• Education: Bachelor's/Master’s in Computer Science or related fields.

Notice Period: 30 days preferred

Interview Process:

1. Technical Round: Online technical assessment (1 hour).
2. Face-to-Face Interview: In-person interview with the team at the Bengaluru office (3 hours).
3. Final Round: Online interview with the CEO (30 minutes).

Additional Information:

• Candidates from Bengaluru or willing to relocate are preferred.
• F2F interview attendance on a weekday is mandatory.

Proficient in React, JavaScript (ES6+), and TypeScript. ● Expertise in state management libraries (Redux, Zustand, etc.). ● Hands-on experience with react-navigation and deep linking. ● Solid understanding of Expo (both managed and bare workflows). ● Knowledge of native development (Swift/Objective-C for iOS, Java/Kotlin for Android). ● Experience with custom native module bridging and native UI integration. ● Strong debugging skills using tools like Flipper and Chrome DevTools. ● Familiarity with Jest, React Native Testing Library. ● Experience with REST APIs, GraphQL, and real-time data (WebSockets). ● Ability to manage OTA updates with EAS Update and configure EAS Build. ● Experience in app publishing and release lifecycle on both Play Store and App Store. ● Knowledge of secure storage, token handling, and app-level security practices.

Are you a UI whiz with a knack for crafting beautiful and intuitive interfaces? Do you love the

challenge of building cross-platform apps with cutting-edge technologies? If so, we want you on our

team!

About the Role:

We're seeking a talented and passionate Software Engineer with a deep understanding of

JavaScript, React, and Flutter to join our fast-growing team. You'll play a key role in designing,

developing, and implementing user interfaces for our web and mobile applications. You'll collaborate

closely with designers, product managers, and backend engineers to bring our vision to life and

create exceptional user experiences.

Responsibilities:

- Design and develop user interfaces (UI) using JavaScript, React, and Flutter

- Build reusable, maintainable, and performant UI components

- Implement responsive layouts that adapt seamlessly across different devices (web, mobile)

- Integrate UI components with backend APIs

- Write clean, well-documented, and testable code

- Collaborate with designers to translate design mockups into functional UIs

- Participate in code reviews and knowledge sharing

- Stay up-to-date on the latest UI development trends and technologies

Qualifications:

- 3+ years of experience as a software engineer with a focus on UI development

- Proficiency in JavaScript, including ES6+ features

- In-depth knowledge of React and experience building React applications

- Solid understanding of Flutter and experience building cross-platform mobile apps

- Experience with UI design principles (user experience, accessibility)

- Familiarity with CSS frameworks (e.g., Bootstrap, Material-UI) a plus

- Experience with state management libraries (e.g., Redux, MobX) a plus

- Experience with unit testing frameworks (e.g., Jest) a plus

- Excellent problem-solving and analytical skills

- Strong communication and collaboration skills

- Ability to work independently and as part of a team

Bonus Points:

- Experience with UI animation libraries (e.g., React Spring, Rive)

- Experience with continuous integration/delivery (CI/CD) pipelines

- Experience with accessibility best practices

- Experience with version control systems (e.g., Git)

WHO YOU ARE

To be successful in this role, you’ll need to have the following skills:

• Love for coding: A fanatic about writing beautiful and scalable code.
• Sense of analytics: Strong analytical and troubleshooting skills. Should be resourceful, innovative and inventive.
• Dynamic: Should be comfortable in dealing with lots of moving pieces. Have exquisite attention to detail, and are comfortable learning new technologies and systems. 
• Team player: Knack for influencing without being authoritative. Pitch in wherever the team needs help, from writing blog posts to supporting customers.
• Accountability: High sense of ownership for your code and relentlessness to deliver projects with high business impact. 

KEY QUALIFICATIONS

• BE/BTech in Computer Science or related field. 
• Minimum 3+ years of UI/Frontend development and a strong understanding of building complex layouts using JavaScript, CSS and HTML.

KEY SKILLS

• Strong computer system analysis and design skills in current methodologies and patterns including vanilla JavaScript, some experience with ReactJS, Redux, React Native, Webpack, and Typescript or similar library/tools.
• Obsessed with WPO (Web Performance Optimization) and web/mobile performance analysis.
• Experienced with web standards and protocols such as HTTP, DNS, TCP/IP, and socket APIs in general.

Responsibilities

• Build applications using JavaScript frameworks such as React.js, Vue.js or svelte.js

• Build reusable UI components, ensuring that UI code base is scalable and maintainable

• Ensure the technical feasibility of UI/UX designs

• Optimize application for maximum speed and scalability

• Good in writing unit test cases, and can follow test driven development approach

• Participate in user experience design and architecture initiatives

• Collaborate with other team members and stakeholders to ensure smooth delivery and elicit new

requirements

• Perform troubleshooting steps, if any, in the phase of implementation, customization, and

configuration

• Having good debugging skills and proficiency in tool to build next-generation web apps

Mandatory Skills

• Knowledge of Functional and OO JavaScript/ES6

• Built web Applications using HTML5, CSS3, and JavaScript with Frameworks like React.js(Hooks

and context API), Vue.Js and svelte.js

• Basic understanding of Typescript and type language concepts

• Clear fundamental understanding of server-side rendered apps, experience with frameworks like

Next,js or Nuxt.js is the Best

• Good understanding of lib and frameworks like Webpack (4.0), lodash, any charting lib like d3.js or

Victory

• Expertise in using JavaScript state Management libraries such as Redux or Mobx

• Prior experience in building responsive design layouts using a formal framework like Material UI.

• Familiarity with best practices (web security concepts, ensuring browser & device compatibility,

etc.)

• Experience in development and debugging tools for cross-browser issues

• Working knowledge of integrating with RESTful APIs for server-side functionality

• Ability to work well individually and in a group setting, under pressure and deadlines

Requirements

• B.Tech/ B.S. or M.Tech/ M.S. in Computer Science, IT or related field.

• 5-8 years of experience.

Desirable Skills

• Hands-on experience with using Git (handling branching and merging), any DevOps pipeline,

• Experience with Agile methodologies

Our frontend (React) team is passionate about React Technology and we are working on a few world-class products which have their roots and frontend in React Technology along with Redux, web-hooks, and Reducers. Keeping performance, scalability, usability, and user acceptance in mind, we are looking for a smart frontend engineer that has experience developing a variety of Web Applications using React Technology. (Along with strong frontend expertise, needs a good understanding of how frontend applications work in different browsers and have a mobile responsive design)

Basic roles and responsibilities are mentioned for the engineer at our team:

• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model
• You will ensure that these components and the overall application are robust and easy to maintain.
• You will coordinate with the rest of the team working on different layers of the infrastructure.
• Good understanding of async functions and their concepts.
• Your primary focus will be on developing user interface components and implementing them following well-known ReactJS workflows (such as Flux or Redux).
• A Commitment to collaborative problem solving, sophisticated design, and quality product is important.

• Developing new user-facing features using ReactJS
• Familiarity with modern front-end builds pipelines and tools.
• Translating designs and wireframes into high-quality code.
• Thorough understanding of ReactJS and its core principles.
• Experience with popular React.js workflows. (such as Flux or Redux)
• Familiarity with RESTful APIs.
• Building reusable components and front-end libraries for future use.
• Knowledge of modern authorization mechanisms, such as JSON Web Token and Oauth.
• Good knowledge of CSS and other latest frameworks like a tailwind CSS / Bootstrap.

• Experience developing highly scalable Web applications.
• Knowledge of Media Queries and CSS via useful frameworks.
• Strong experience with React frameworks with components like Redux, Flux, Webhooks.
• Good knowledge of code versioning (git / Github)
• Good experience with code deployment on servers like Ubuntu, Linux systems.
• In-depth knowledge of designing and developing software in distributed architectures for multi-tier applications
• Basic understanding of docker to work with different major versions of Node js and database release(Postgres, MySQL, etc)
• Good knowledge to write and train the team to write unit test cases for the application code.

• You would be knowing how to do a basic code review of team and junior NodeJS engineers.

• Experience with deployment and CI/CD is a plus!
• Have worked with Testing libraries
• Good Verbal and Written communication Skills.

Appristine Technologies. We are based in Pune and offer an exciting working environment along with very attractive remuneration, to all deserving candidates. Currently, we are hiring for the following role.

1. ReactJS Developer – 2+ Years Exp.

Skills & Knowledge

• Minimum 3 years of development experience in React and Redux.
• Good understanding and experience of HTML / CSS / Javascript / Webpack / Bootstrap.
• Hands-on experience with ES6 / ES7 / ES8 features.
• Expertise with Web Services / REST APIs.
• Skillful experience in Node JS / Express / MongoDB will be a plus.
• Understanding of mobile cross-platform frameworks like React Native.

Key Responsibilities:

• Participate in full project life cycle (including requirement analysis, system design, development, and support if required).
• Partner with Project Managers, Business Analysts, and other developers to plan project work by providing estimates, risk analysis, technical options.
• Support and work collaboratively with teams across areas of design, development, quality assurance, and operations.
• Help define the vision for a product, identify dead ends and routes with untapped potential.
• Attend meetings to discuss and demonstrate solutions at both a technical and business level.

Required Skills

• 5+ years of web application development experience using at least one of the following: Javascript, Web Components, Angular, Polymer, ReactJS, Redux, LitElement, Svelte, VueJS, or knockout.js. Web Components is used and preferred.
• Experience with SPA (Single Page Application) design and implementation
• Experience with HTML5/CSS3/JavaScript/ and AJAX
• Experience working with a variety of APIs and RESTful interfaces
• Experience with performance optimization
• Experience integrating security best practices into the SDLC
• Experience with Git
• 1+ years of Agile development experience
• Experience manipulating and working with data in a variety of forms: csv, xml, json, structured and unstructured
• Intellectual curiosity and drive; self-starters will thrive in this position
• Passion for Technology: excitement for new technology, bleeding edge applications, and a positive attitude towards solving real world challenges

Desirable Skills

• SQL experience. PostGreSQL a plus.
• Knowledge of AWS or other cloud environments is a plus.
• Knowledge JIRA, Bamboo, Confluence, or BitBucket a plus.
• Experience with CI/CD is a plus.
• Experience working with databases and web applications in analytics, reporting or Business Intelligence is a plus.

Build large scale web applications with Single Page Applications (SPA) architecture.

Experience to develop MV(C) based front end frameworks.

Experience with JavaScript, HTML, CSS.

Experience with JavaScript frameworks like Angular, preferably React.JS.

Good understanding of asynchronous request handling, partial page updates, AJAX and Redux.

Proficient with Chrome Developer Tools.

Additional Preferred Qualifications

Experience in Restful API services.

Experience in using performance, analytics and UX tools.

Experience with pull request process and contributing to OSS on github.com.

Experience with unit testing frameworks Mocha and Chai.

Experience with Jenkins.