ReactJS Developer

Ever dreamed of being part of new product initiatives? Feel the energy and excitement to work on version 1 of a product, and bring the idea on paper to life. Do you want to work on SAAS products that can become the next Uber, Airbnb, or Flipkart? We allow you to be part of a team leading the development of a SAAS product.

Our organization relies on its central engineering workforce to develop and maintain a product portfolio of several different startups. Our product portfolio continuously grows as we incubate more startups, which means that different products are very likely to use different technologies, architecture & frameworks - a fun place for smart tech lovers!

The Role:

A Senior Frontend Engineer strives to build solid frontend foundations, infrastructure, and top-notch experiences. You 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.

Roles and Responsibilities:

●   Develop high-quality and responsive user interfaces using HTML, CSS, and JavaScript

●   Implement and maintain frontend frameworks and libraries, such as React, Angular, or Vue.js

●   Collaborate with designers to translate wireframes and mockups into functional UI components

●   Ensure cross-browser compatibility and optimize web applications for maximum speed and scalability

●   Write clean, modular, and maintainable code following coding standards and best practices

●   Conduct thorough testing and debugging to ensure the functionality and performance of UI components

●   Participate in code reviews, providing constructive feedback to improve code quality and maintainability

●   Work closely with backend engineers to integrate frontend interfaces with server-side logic and APIs

●   Collaborate with product managers and stakeholders to understand project requirements and provide technical insights

●   Stay up-to-date with the latest front-end technologies, trends, and best practices, and proactively suggest improvements to the development process

●   Champion usability and accessibility, adhering to web accessibility guidelines (e.g., WCAG) and implementing UX principles

●   Provide technical guidance and mentorship to junior engineers, fostering their growth and development

Experience using AI agents/coding assistants (e.g., Copilot, Claude, Cursor) during the software development lifecycle.

Ability to effectively leverage AI for code generation, debugging, testing, problem decomposition, and improving developer productivity.

Demonstrates good ownership of AI-generated code, including reviewing, validating, and refining outputs before adoption.

Mandatory Qualifications:

●   A minimum of 3+ years of relevant experience

●   Proficient knowledge of any popular JS framework like React, Ember, Angular, or Backbone

●   Experience with common front-end tools like SASS/Stylus, Jade, Grunt/Gulp, etc

●   Good understanding of REST API

●   Ability to build a feature from scratch & drive it to completion

●   A willingness to learn new technology, whatever lets you deliver the best product

Good to have:

We also expect the following, but we accept that you can be an absolutely great developer without fulfilling the below. So go ahead and apply even if the following isn’t applicable:

●   Have a few weekend side-projects up on GitHub

●   Have contributed to an open-source project

●   Have worked at a product company

●   Have a working knowledge of a backend programming language.

 Location: Bangalore

What does the core role include?

• Designing and developing high-volume, low-latency applications for mission-critical systems and delivering high-availability and performance
• Designing stateless components in React Native
• Contributing in all phases of the development lifecycle
• Working with the developers to create and maintain a robust framework to support the apps
• Working with the developers to build the interface with a focus on usability features
• 
  

What else can you expect in the role?

• Prepare and produce releases of software components
• Optimizing performance for the apps
• Problem-solving skills, analytical mind, and positive attitude
• Ability to think from end users perspective and focused on improving the overall product experience.
• Deliver across the entire app life cycle concept, design, build, deploy, test, release to app stores and support
• 
  

What can fetch you brownie points?

• Hands on experience with React Native is required
• Hands-on experience in React Native APIs, ReactJS, Javascript, ECMAScript (OOJS) and JSX.
• Strong understanding of JavaScript ecosystem
• Hands on experience on Android in creating Hybrid / Native applications
• Demonstrable UI/UX experience on a large-scale app.
• Thorough understanding of React Native development tools like IDEs (Nuclide, Atom, Sublime Text, or Visual
• Good knowledge of JS frameworks like ReactJS is a plus.

Desired Skills and Experience

Hybrid Apps,React Native, Native iOS and Android Architecture understanding

About us:
Equal parts creative agency, engineering firm, and consultancy, Grappus has a reputation of doing things differently. We work with brands big and small, far and wide, helping them understand, prototype and deploy a broad range of custom tech. We value design and we cringe at bad UX. Each project is a clean slate, we don’t have frameworks, or any pre-made formulas. We’re not here to just grow big, make money and win awards. We’re here to crack the process of building truly innovative products from scratch. Products that make people say ‘damn’.

People at Grappus usually experience a highly accelerated career growth well beyond the narrow constraints of their ‘job description’. Here, the growth ladder is tailored to you. It operates exactly as fast as you can manage to grow. We think it's a waste when smart people are unable to make an impact. Our aim is to unleash your potential by giving you massive challenges and the freedom to solve them.

We’re in a fluid world, where we don’t know what technologies we’ll use next, or the projects we’ll work on. We’re actively searching for ways to shine a light on our blind spots, whether it is in the products we want to build, the problems we like to solve, or the company culture we try to create. That’s what makes life at Grappus so exciting. Grappus is an ongoing experiment and you are a part of it. We'll be a different company a few years from now because you are going to change it for the better. We can’t wait to see where you take us.

About the role:
We are seeking a Sr. Frontend Developer who has a knack for coming up with creative solutions to unique problems, planning development cycles and writing technical documentation while leading a team of developers. You can get in where needed to write clean, reusable, and performant code, with creative sensibilities to push projects towards perfection. You should have good time management skills and be able to work both autonomously and collaboratively with a cross-discipline team of product managers, strategists, UX designers, art directors, and developers. Most importantly, you have an eye for detail and the ability to make beautiful designs come to life through code.

What we’d like to see:
● Ability to write elegant and readable code
● Excellent problem solving skill and love technical challenges
● Lead a team of developers and showcase managerial skills
● Comfortable working in a team-oriented and collaborative environment
● Strong understanding of Agile and Lean software development processes and practices
● Stays plugged into emerging technologies/ industry trends and applies them proactively
● Knowledge of software best practices, like test driven development and continuous integration

Must have:
● BE/ B.Tech in Computer Science or a related field or equivalent practical experience
● Proven working experience in frontend programming for a minimum of 3 years
● Good understanding of frameworks like Bootstrap, Backbone, ReactJS, Redux and libraries like jQuery, LESS and Ajax
● Knowledge of performance testing frameworks including Mocha and Jest
● Experience with browser-based debugging and performance testing software
● Strong understanding of server-side scripting and Javascript frameworks, including jQuery
● Aggressive problem diagnosis and creative problem solving skills and client handling skills
● Ability to work and thrive in a fast-paced environment, learn rapidly and master diverse web technologies and techniques
● Experience with coaching and mentoring junior web developers
● Experience in working with a variety of external frameworks and libraries
● Proven experience integrating with, along with a deep understanding of, service-based Web APIs including REST and/or GraphQL
● Good knowledge of User Interface patterns and techniques to solve common UI problems

Nice to have:
● Familiarity and experience using a variety of architectural design patterns
● Personal projects or contributions to the open source community
● Knowledge of modern authorization mechanisms, such as JSON Web Token
● Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
● Strong organizational skills to juggle multiple tasks within the constraints of timelines
● Team player (those great personality types that people love to work with)
● Great communication skills

Why you’ll love it here:
(Besides working with our team with infinite charm)

● We have no fixed work timings or leave policy, you can take unlimited leaves and start your day whenever you want. (Just make sure others in your team don’t suffer)
● We don’t track these hours you put in or ask you to fill time sheets. We don’t believe in
micromanaging, if you’re struggling, ask for help. If someone else is, offer some support.
● We never mind if people make mistakes or screw up in any way, and offer full encouragement to help people learn fast by failing fast.
● We always encourage people to be completely candid, raise alarms, or log complaints
anonymously in our feedback tool, no matter how harsh.
● We are a ‘Work from Anywhere’ company, since passionate, driven people can work from
anywhere they want; their homes, or cafes, or mountains, or beaches, anywhere.
● We have a 15-day notice period. We want to build a place where people work willingly and passionately.

• Develop user interface components and implement them using well-known React workflows & best-practices. Build reusable components and front-end libraries for future use.
• Take complete ownership of features, break it down to smaller tasks, identify blockers and find solutions for them; collaborate with other cross-functional teams to deliver the feature on time.
• Create responsive layouts for different mobile screens and desktops with search friendly markup
• Translating visual designs and product wireframes into high quality code

• Min 2+ years of experience in developing modern consumer facing web applications using React and Redux
• Should be aware of latest React patterns and know how to leverage react hooks, functional components and higher order components
• Strong proficiency in CSS, JavaScript, including DOM manipulation
• Must know basics of web technology
• Tech skills needed: React, Typescript, Javascript, HTML, CSS, Redux

• We are looking for a JavaScript developer who is proficient with React.
• Your primary focus will be on designing and developing products using Core UI and React.
• Should have good hands on experience in node, sass, javascript ES6,laravel concepts

• 2-4 years of work experience, preferably in a startup
• An engineering degree preferably, from a top-tier school (or equivalent experience)
• Hands-on experience in the JavaScript ecosystem, libraries, and tooling (ES6/7), React.js, and Redux
• Knowledge of React Hooks is an added advantage.
• Expert knowwledge of HTML/CSS, web standards, best practices
• Good understanding of asynchronous request handling, partial page updates, and AJAX
• An experience of writing clean, well documented, semantic code with responsiveness and cross-browser compatibility in mind
• Ability to improvise, troubleshoot, and learn new skills on the job.
• Proficient understanding of code versioning tools, such as Git/SVN
• Excellent coding and debugging skills
• A passion and the ability to make beautiful, smooth, delightful web experiences
• A "Will Do" attitude

• A team of aces, from top-tier schools and startups, to work with
• A fast-paced, data-driven, and fun work environment
• A huge appetite for new, disruptive, creative, and implementable ideas
• An open work culture

• Competitive salary
• Great working environment, opportunity to work directly with the founders on very exciting real-life problems.
• Opportunity to grow really fast.
• Opportunity to hire a team & mentor them in the future.
• ESOPs

1. Shortlist
2. Intro call of 15min
3. Assignment
4. 1-2 Tech rounds
5. HR round
6. Offer rollout

Learn from the best: Learn from leaders who have built Comm100 from ground up. Work under other engineers who handle different layers of the infrastructure.

Work in a data-driven team: Understand the importance of validating assumptions about user behaviour. Use various types of testing to ensure we're right (or discover where did we go wrong). Utilize data collection, enrichment, analytics, and visualizations to improve our systems.

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 SKILLS

• Strong computer system analysis and design skills in current methodologies and patterns including vanilla JavaScript,
• Rich experience with ReactJS, Redux, React Native, or similar library/tools.
• Obsessed with WPO (Web Performance Optimization) and web/mobile performance analysis.
• Familiar with web security, SEO, accessibility, and internationalization.
• Experience with W3C standards, HTTP protocol and web browsers.
• Experience with common tools such as front-end compilation, construction, testing, etc. (Babel, Rollup, Webpack, Jasmine, etc.)