UI Lead - React.js

Job Title: Senior Software Engineer – Frontend

About the Role

We are looking for a highly skilled Senior Frontend Engineer to join our fast-growing product engineering team. As a senior contributor, you will play a key role in designing, building, and scaling modern, intuitive, and performant web applications that delight our users. You will collaborate closely with product managers, designers, and backend engineers to bring ideas to life—while mentoring junior engineers and driving best practices across the frontend discipline.

Key Responsibilities

• Build & Deliver: Design, develop, and maintain high-quality, scalable, and responsive web applications using React.js and modern JavaScript/TypeScript.
• Own the Frontend: Drive architecture decisions, contribute to reusable component libraries, and ensure the frontend stack remains cutting-edge.
• Collaborate: Work with cross-functional teams (Product, Design, Backend) to translate business needs into elegant technical solutions.
• Performance & UX: Optimize applications for maximum speed, responsiveness, accessibility, and seamless user experience.
• Best Practices: Champion code quality through code reviews, automated testing, CI/CD pipelines, and documentation.
• Mentorship: Provide technical guidance, support, and mentorship to junior and mid-level engineers.
• Innovation: Stay current with frontend technologies, tools, and frameworks, continuously improving how we build software.

What We’re Looking For

• Bachelor’s degree in Computer Science, Engineering, or related field (or equivalent experience).
• 5–8 years of professional experience in frontend or full-stack software development.
• Deep expertise in React.js, JavaScript (ES6+), and modern frontend ecosystems (Webpack, Babel, NPM/Yarn, etc.).
• Solid understanding of data structures, algorithms, and software design patterns.
• Strong experience with unit testing, debugging, and performance profiling.
• Familiarity with RESTful APIs, and micro-frontend architectures is a plus.
• Experience working in Agile/Scrum environments.
• Excellent problem-solving skills, with strong attention to detail and a focus on delivering value.
• Strong communication and collaboration skills, with a passion for teamwork.

Why Join Us

• Opportunity to own impactful projects end-to-end, from ideation to deployment.
• A culture that values technical excellence, continuous learning, and innovation.
• Work alongside talented engineers and thought leaders in a fast-paced, growth-oriented environment.
• Competitive compensation, flexible work options, and comprehensive benefits.

position Summary

§  Title: UI Developer

§  Location: Bangalore

§  Type: Full Time

§  Qualifications: Bachelor’s/Master’s degree in computer science/Information Science

§  Experience: 4to 7 years

Development skills

§  Top-notch programming skills and in-depth knowledge of modern HTML/CSS, JavaScript

§  Hands-on experience in React JS, ECMAScript (ES5,ES6/above)

§  Experience in Unit and E2E test automation (preferably Jest &Cypress)

§  Knowledge of web components and different component patterns

§  Experience using a state management library (Redux, Context API)

§  A solid understanding of how web applications work including security, session management, performance, and best development practices

§  Adequate knowledge of Object-Oriented Programming and web application development

Methodologies

§  Git, Jenkins

§  Test driven development

Good to have

§  Very good at programming and debugging for cross- browser compatibility and accessibility code

§  Unit testing experience on tools such as chai, mocha, jasmine

§  Reusable components development that can be used across web/ mobile applications.

§  Build tools such as webpack, grunt, gulp, babel

Other skills

§  Collaborate with business partners to gather requirements, implement new functionality, and drive continuous improvements

§  Excellent written, communication & presentation skills

§  Strong analytical skills and enjoys solving complex technical problems.

§  Participate in all phases of software life cycle including architecture, technical design, implement, test, and launch

§  You enjoy wearing multiple hats and roles, and titles are not important to you.

§  You enjoy doing it right first time and utilize tools & techniques to constantly excel in what you work to deliver it on time.

§  You are comfortable working under strict confidentiality agreements and often behind the-scenes.

§  You are self-organized and manage time and resources well.

§  Work independently and as part of a team

§  You are constantly growing your own knowledge, and helping to grow the knowledge of others

• Knowledge of OO JavaScript
• 7.2. 10+ years hands-on experience with web development using
• HTML5, JavaScript (React, Preact.js, Redux, Redux, Vue.js,
• CSS3, SignalR, Socket.io)
• 7.3. Experience building responsive design layouts using a formal
• framework like Bootstrap and familiarity with best practices
• (web security concepts, ensuring browser & device
• compatibility, etc.)
• 7.4. Experience in creating secure pre-compiled script libraries.
• 7.5. Familiar with development and debugging tools for cross-
• browser issues
• 7.6. Experience integrating with RESTful APIs for server-side

⚒️ About The Role

We're looking for an experienced Frontend Engineer to breathe life into the user interface of our product. Understanding that meticulous engineering not only drives the user experience but also influences our product development process, we aim to prioritize this role from Day 1

🚀 This Role

As a Founding Frontend Engineer at Upskillr.ai, your contributions will be vital in refining the user experience of our AGI Platform. You will also participate in evaluating user interfaces and crafting the frontend landscape for future products. Further:

• Creating and optimizing our frontend infrastructure, rendering captivating user experiences through your engineering prowess.
• Utilizing your specialized skills to navigate frontend development, from designing responsive layouts to implementing interactive features.
• Collaborating closely with founders on product development and with designers for harmonious UI/UX integration.

What you'll work on:

• Leading feature development from user research to production in collaboration with designers and AI engineers.
• Building responsive UI components using React principles and JavaScript.
• Establishing a flexible frontend architecture with supportive APIs.
• Demonstrating expertise in front-end performance optimization and contemporary standards.
• Pioneering the engineering and integration of optimal human ↔ AI interfaces for enterprise operations. We're trailblazing in a fresh domain of engineering that previously didn't exist. The onus is on us to explore and incorporate a novel interface that resonates with our users.

Technical Skills:

• Profound expertise in JavaScript and React, along with robust front-end coding abilities and an understanding of progressive web applications.
• Must possess skills in HTML5, CSS3, JavaScript, React.js, Webpack, Enzyme, Redux, Flux, GIT, HTTP(s), Terminal, Build Tools, State Management, Type Checkers, Form Helpers, Routing, REST API, GraphQL, Utility Libraries, Internationalization, Server-Side Rendering, and Backend Framework Integration.
• Proficiency in browser-based debugging and performance testing.
• Experience in performance tuning, usability enhancement, automation, and continuous integration leveraging test-driven development methodologies (BDD/TDD).

🕵️ What We Look For

• Self-starters prepared to lead significant initiatives.
• Avid curiosity and passion for technology.
• Familiarity with UI/UX principles from an engineering perspective.
• Excellent communication abilities

😁 Perks & Benefits

🤝 Top-of-the-market compensation — At Upskillr.ai, we will offer top-of-the-market (90th+ percentile) compensation in both cash and equity. We believe that the best candidates deserve the best compensation, and we will ensure that it happens.

💯 High impact — You’ll be joining as a founding member of the team, and as such you will have a high level of ownership and influence over the direction of the company.

🧠 The gains — Collaborate closely with the founders. Experience the excitement of a rapidly expanding startup.

About Us

We build LLM Based Tools and Services for Enterprises.

Upskillr.ai, started by Aditya Saxena and Vikram Pandya, is a dynamic knowledge platform that combines the best of education and knowledge management powered by AGI.

What We Do

We are committed to delivering innovative and comprehensive solutions that address the diverse learning needs of individuals and organizations. The company is dedicated to leveraging Artificial General Intelligence (AGI), to provide personalized and tailored support, ensuring the success and satisfaction of its users.

About Xpresslane:
Xpresslane is a universal one-click checkout platform for eCommerce. We want to transform the way online shoppers buy, Democratize optimized checkout and post checkout experience. We have achieved 150+ signups from D2C merchants in the last year alone and are aggressively adding new features to help solve problems in their checkout process.

Engineering @Xpresslane:
We are a small group of Tech Enthusiasts, Product Managers. We give incredible value to design and UX is our topmost priority. We've implemented products using Go, Java, Kubernetes, Docker, Temporal, GraphDB, Svelte & React, Cypress, Gitlab CI/CD.

Why Engineering @Xpresslane:

• Opportunity to Design & Implement new features which are internet-facing.
• Opportunity to Design Scalable Distributed System spanning many regions.
• Freedom to learn & work across Frontend/Backend/Devops/Design Expertise.
• 2-4 years of experience in Frontend Engineering.
• Expertise in one or more frontend frameworks like React/Angular/Vue/Svelte
• Style the frontend applications with an incredible focus on design & UX.
• Self-driven in identifying opportunities to make things better and efficient.
• Ensure code quality and reliability through automated test implementations.
• View frontend as Engineering i.e, plan & implement components for reusability, testability
  and scalability.
• Nice to have, experience in using Figma/Sketch for quick mockups & prototypes
• Nice to have knowledge of cache busting, CSRF, XSS attacks.

GeoSpoc is looking for passionate Senior Frontend Engineers to join the software engineering team and help build elegant, intuitive interfaces to analyse geospatial data.

• A passionate developer with solid understanding of software basics.
• Always willing to learn and explore upcoming technologies.
• Pro-active, reliable and result oriented.
• Someone who can continuously perform in a fast-paced environment.

• Extensive experience building and maintaining responsive web interfaces using modern JavaScript, HTML & CSS tools and client-side frameworks like React or Vue
• JavaScript -
• Extensive knowledge of JavaScript. ES6, polyfills, etc.
• Writing good code with proper use of Linters.
• Good to have -TypeScript and/or JSDoc
• Minimum 1 years of experience in state management libs such as Vuex or Redux.
• Proficient in agile software development practices: version control, Kanban, ticketing, peer-reviews
• Test driven development, continuous integration and continuous deployment.
• Experience with docker and container orchestration
• Good understanding of micro-services architecture
• Experience building solutions for the cloud; using AWS, Azure, GCP etc.
• Has had hands-on experiences in developing performance driven Progressive Web Apps

• js / React - 1.5 to 3 years
• State Management - 1 to 3 years
• Vanilla JS - 3 to 5 years
• Karma / Jest - 1 to 3 years
• Map libs - 1.5 to 3 years
• Docker - 1.5 to 3 years
• HTML5 / CSS3 - 2 to 5 years

We're looking for a React Developer to join our growing frontend team.

As a React Developer, you will help develop the next generation of our apps using tools such as React.js, Redux, Saga, Thunk and Webpack. You should be familiar with React and its ecosystem. Past experience with a React codebase is a requirement.

We're looking for someone who is comfortable with a fast-moving environment and can learn quickly.

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

While these requirements are a guideline, feel free to apply even if you don't meet some of these.

• 3+ years’ experience working with a Javascript framework, preferably React
• In-depth understanding of Javascript, the DOM, and relevant concepts
• In-depth understanding of Redux/React Hooks/Saga/Thunk
• Proficiency with browser based debugging and performance testing
• Understanding of progressive web apps
• Experience with a testing framework (Jest/Mocha)
• Experience using Git
• Excellent communication skills, both written and verbal

Job Description:

The UI Engineer(4-7)  will design; develop front-end for AgroStar product solutions.

 Key areas of responsibility:

1. Responsible for core UI framework, implements and maintains it.
2. Operates effectively as an individual for quick turnaround of enhancements and fixes.
3. Responsible for the development of the front-end applications and components.
4. Responsible for architecture & design of the product.
5. Co-ordinate with the backend engineers & designers for requirement gathering of the product.
6. Responsible for creating POCs to design a scalable system.
7. Build reusable code and libraries for future use.
8. Responsible for quality assurance including web usability, accessibility, testing and debugging.

 As an ideal ‘Agstar UI Engineer’, you will need:

 3-7 years of prior hands-on experience in building responsive web interfaces for consumers

Significant experience with Git and GitHub including managing branches, merges, and administration

Ability to translate product requirements into functional code.

Ability to estimate the scope of work for sprint planning.

Top-notch programming skills.

Self-motivated and able to work in a small team with minimal supervision

Strong development experience on the following technologies -

HTML, CSS, Javascript, AJAX,  working with REST APIs.

Must be fluent in writing code in  ES6+ along with linters.

CSS preprocessor - SCSS/ LESS.

Front end frameworks/library such as ReactJS, Redux.

Web standards, Responsive design, and cross-browser compatibility, SEO, Accessibility.

We are looking for enthusiastic intrapreneurs who want to work at the ‘grass root’ level and want to make a difference to India’s biggest sector. We hope this excites you as much as us and looking forward to the next few conversations.

We're looking for developers who are interested in solving problems. We like people who are willing to work across the technology spectrum. 

An example of a typical problem would be a product feature that requires UI/UX (Typescript/React/HTML/SCSS), server changes (Java/Scala/R), and database changes (MySQL).

You will own some or all of a product/feature. You will also mentor others, read and review code, maintain code, deploy code, tune the performance of systems, as required.

Requirements :

- We're looking for 4 years or more of relevant work experience. That being said, if you think you have the necessary skills to make the number irrelevant then do talk to us

- Proficiency in Java, JavaScript, and sufficient knowledge of database concepts to write efficient queries

- Working experience in one or more of React, Redux, Typescript, and associated tools such as Webpack, Grunt, Gulp etc.

- Working experience in HTML, (S)CSS

- Working experience writing unit/functional/integration tests

- Knowledge of Java 8 features such as streams and lambdas is a plus

- Knowledge of REST concepts and design is a plus

- Knowledge of ES6 features/syntax is a plus

- Knowledge of functional programming concepts is a plus

- Knowledge of build/deploy tools such as Ant, Maven, Gradle, Ansible, Chef, Puppet etc. is a plus

- Knowledge of one or more scripting languages such as Awk, Bash, Perl, Python, Rubyetc. is a plus

- Ability to use modern IDEs such as VSCode, IntelliJ IDEA, Eclipse etc. is a plus

- Knowledge of container technologies such as Docker, Kubernetes, etc. is a plus

Bonus Points :

- For product experience. We're a product company. Talk to us if you have worked on software products

- For startup experience. Have you worked in a any startups? We're always looking for people who have startup experience

- If you've developed and deployed any software for your own, or others- use

- If you've contributed to open source projects

- If you've spoken at developer conferences, published articles in tech websites, published podcasts

- If you communicate well. Do you blog? Can you explain ideas clearly and succinctly? Can you answer questions in short, clear sentences?

- If you have technical certifications such as AWS, Docker, Redhat etc.

- If you're self taught. Have you learned other programming languages, technologies etc. on your own? Share the details of the courses you took online, for instance.

- For deep knowledge in one or more areas. We like people who dig down, understand concepts in detail

- If your code/work is out there in public. We'd love to see what you've developed and deployed to the external world