React.js Developer

Job Title: Associate Frontend Engineer

Job Summary:

We are looking for a passionate and motivated Associate Frontend Engineer with 1 to 2 years of experience to join our product engineering team. In this role, you will work closely with experienced developers and designers to build seamless, performant, and user-friendly interfaces using modern JavaScript frameworks. You’ll gain hands-on experience in building production-ready web applications and learn how to deliver high-quality UI at scale.

This opportunity is ideal for individuals who are early in their careers and eager to grow through real-world development, mentorship, and continuous learning.

Website: https://www.thealteroffice.com/about

Key Responsibilities:

• Assist in developing and maintaining responsive, accessible, and performant web user interfaces.
• Work with modern JavaScript frameworks/libraries such as React, Vue, or Angular to build modular, reusable components.
• Translate UI/UX designs from tools like Figma into pixel-perfect, production-quality code.
• Write clean, maintainable, and well-documented HTML, CSS, and JavaScript (ES6+).
• Collaborate with product managers, backend engineers, and designers to deliver complete, integrated features.
• Learn and apply best practices in state management, component-driven development, and API integration.
• Participate in code reviews, understand and follow design systems, and contribute to a culture of code quality.
• Debug and resolve cross-browser, cross-device, and performance-related UI issues.
• Use tools such as Git, CI/CD pipelines, and frontend build tools (e.g., Webpack, Vite) as part of your daily workflow.
• Begin working with TypeScript, Tailwind CSS, and popular UI libraries (e.g., Material UI, Bootstrap) to enhance development efficiency and consistency.
• Follow accessibility guidelines and responsive design principles, ensuring your UI works for all users.
• Gain exposure to linting tools, formatters, testing libraries (unit/integration/e2e), and performance profiling using browser dev tools.

Requirements:

• 1 to 2 years of experience in frontend development through internships, academic projects, freelance work, or personal side projects.
• Solid understanding of HTML, CSS, and JavaScript (ES6+) fundamentals.
• Familiarity with at least one modern JavaScript framework (React, Vue, Angular).
• Understanding of version control systems like Git and ability to collaborate in a team-oriented development workflow.
• Willingness to learn and apply best practices in UI performance, security, accessibility, and maintainability.
• Strong problem-solving abilities, attention to detail, and eagerness to grow through mentorship and feedback.
• Effective communication skills and ability to work in a fast-paced, agile team environment.

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. You will also be responsible for profiling and improving front-end performance and documenting our front-end codebase.

React.js Developer Responsibilities: 

1.     Reviewing application requirements and interface designs.
2.     Identifying web-based user interactions.
3.     Developing and implementing highly responsive user interface components using react concepts.
4.     Writing application interface codes using JavaScript following react.js workflows.
5.     Troubleshooting interface software and debugging application codes.
6.     Developing and implementing front-end architecture to support user interface concepts.
7.     Monitoring and improving front-end performance.
8.     Documenting application changes and developing updates. 

React.js Developer Requirements: 

1.     Previous experience working as a react.js developer.
2.     In-depth knowledge of JavaScript, CSS, HTML, and front-end languages.
3.     Knowledge of REACT tools including React.js, Webpack, Enzyme, Redux, and Flux.
4.     Experience with user interface design.
5.     Experience with browser-based debugging and performance testing software.
6.     Excellent troubleshooting skills.
7.     Good project management skills.

FrontEnd Developer

Job Description

Introduction-:

Synapsica is a growth stage HealthTech startup founded by alumni from IIT Kharagpur, AIIMS New Delhi, and IIM Ahmedabad. We believe healthcare needs to be transparent and objective, while being affordable. Every patient has the right to know exactly what is happening in their bodies and they don’t have to rely on cryptic 2 liners given to them as diagnosis. Towards this aim, we are building an artificial intelligence enabled cloud based platform to analyse medical images and create v2.0 of advanced radiology reporting. We are backed by YCombinator and other investors from India, US and Japan. We are proud to have GE, AIIMS, the Spinal Kinetics as our partners.

Your Roles and Responsibilities

Who can apply:

We are looking for a passionate, self-starting, competent professional who is comfortable with all aspects of software development in FrontEnd. You will get hands-on experience in the latest technology and skills such as ReactJS, VueJS, VanillaJS etc. This role is ideal for you if you have a background in Front End development and are looking for ­­­­­the next level of career growth and competence in interface design and development.

What will you do:     
                  ­­­­

• Responsible for  developing, testing and maintaining the  front-end of the product interface.
  
  
• Interacting with APIs and middlewares through Front-end action items.
  
  
• Ensuring responsiveness and cross-platform compatibility of applications.
  
  
• Owning and delivering end-to-end products, features, enhancements
  .
• Write clean, well-documented and functional code with unit test cases.

Required Skills and Technologies

• Degree in Computer Science or related discipline with 3-7 years of experience.
• Proficiency with VanillaJS, html and css, and fundamental front-end libraries and frameworks such as ReactJS, AngularJS, Vue.JS, .
• Hands on with React.JS or similar frontend framework/library.
• Well versed with UI and UX.
• Good to have knowledge of CI/CD tools.
• Hands on with investigating and fixing technical bottlenecks and performance assessment and improvement.
• Familiarity with agile methodologies.
• Prior experience with at least one no-sql database such as MongoDB.
• Excellent verbal communication skills.
• Good problem solving and troubleshooting skills.
• High sense of ownership along with deep interest and passion for technology.

Aerchain is an AI-powered Procurement platform transforming the way purchase is done in enterprises. We are a 2-year-old funded startup with some of the largest global companies as clients and are part of 3 top accelerator programs backed by Reliance Group, top VCs & Supply Chain experts. We are on the lookout for technology enthusiasts who would love to contribute to revolutionising the world's procurement industry with Artificial Intelligence!

Responsibilities

1. Define technical blueprints and take complete technical ownership of high-level design, tech stack of the product.

2. Design, build, test and deploy product features that are reliable, secure and optimised for performance across all environments.

3. Work closely with product management team to define and refine feature specifications.

4. Work with cross-functional teams to address technical dependencies.

5. Drive some of the company-wide tech initiatives striving towards continuous technical excellence of our platforms.

6. Mentor upcoming engineers in the organisation / team.

Qualifications

1. 4+ years of experience in developing dynamic, scalable web applications.

2. Demonstrated ability in building / architecting large scale products in the React ecosystem.

3. Ability to work with teams in a collaborative and productive manner.

4. Strong computer science fundamentals in data structures and algorithms.

5. Familiarity with cross-browser compatibility issues and demonstrates good design and UI / UX sensibilities.

6. Excellent technical leadership and mentoring skills.

Our Ideal Candidate

1. Loves writing and owning code and enjoys challenges and problem solving.

2. Self driven and motivated with the desire to work in a fast-paced, results-driven agile environment with varied responsibilities.

3. Takes end-to-end ownership of the product, ideates on product requirements with the team and drives it from design to implementation.

4. Action-oriented and dreams big. More importantly believes and has the ability of “Making it Happen !”

Why Aerchain

1. Be part of the engineering leadership team - You’ll have the opportunity to work with cross-functional teams and take key technology decisions to build future-forward products.

2. Build a truly disruptive product - We are building a platform that transforms the way S2P cycles happen in enterprises. Using data at every step, we plan on automating processes starting with requirement gathering to payments and customers love us!

3. Be part of the high-growth challenge - In the process of scaling from 1-10, we are sure that there are very exciting and challenging times ahead. The experience of being a part of this growth phase is unique and will fast track your career. You’ll obviously learn a lot!

Kvantum is a career-changing opportunity where you will get to learn the latest and greatest marketing analytics for CPG, Retail, eCommerce, Pharma industry (to name few). At Kvantum, you will be part of a rapidly growing company. You will be able to make your mark; you’ll help write the story.  You will get the chance to go above and beyond, being a hero to your clients and to your team. You will get the chance to make a big impact, applying your coding skills, domain expertise to ready the most innovative marketing science product to Fortune 1000 customers.

What you’ll be doing in your new job:

 As a  Front End/UI Developer at Kvantum you will be working with incredibly talented, optimistic people in an environment that fosters innovation builds trust, and frequently erupts into laughter. You are a natural developer and enjoy helping team members in coding and development. You command respect from your superiors and also from peers. In this role, you’ll demonstrate a proven track record of developing enterprise-grade web frontends using technologies such as JavaScript, Ajax, XHTML and JSON. You'll join a team of exponential application developers who are working hard to develop our next generation SaaS marketing applications.

 Primary Responsibilities includes:

• Develop Proof-of-Concept and prototype applications using new technologies and frameworks. In addition to collaborating with internal teams and clients to create innovative solutions.
• Help establish GUI best practices and JavaScript frameworks for web development.
• Provide context and guidance for integration and implementation of Front-End Interfaces
• Translate wireframes, comps, and functional requirements into functional HTML/ CSS / Javascript.
• Develop standards-compliant mark-up and code for web sites and applications
• Develop JavaScript using standard Frameworks (jQuery, etc.)
• Develop small to medium size custom JavaScript libraries for reuse across the application
• Provide technology and implementation expertise to the domain, projects, or client
• Maintain leading-edge knowledge in emerging technologies and frameworks
• Participate in knowledge sharing and lessons learned sessions from project experiences

For this position, you must have:

• Expert JavaScript/HTML/CSS coding skills.
• 2-4 years of professional experience 
• Minimum 2 years of relevant experience in javascript 
• Minimum 1 year of relevant experience in React.js
• Hands-on experience with the implementation of different design patterns
• Proven experience of developing software using the Agile/SCRUM development methodology
• Command of web standards, CSS based design, cross-browser compatibility
• Experience to optimize the performance of the web application;
• Good understanding of page rendering, DOM manipulation, caching, REST API
• Experience of developing the application using  Test-driven Development(TDD)
• Experience of working on LINUX environment
• Attention to detail, Dedication, and Problem-Solving skills.

Nice to Have: 

• Working experience in any of  these technologies and frameworks: D3.js, Node.js, Express.js, Elasticsearch, GraphQL, Redis
• Experience working with start-ups.
• A good learning curve for new technologies.

We provide a competitive stipend and abundant opportunity for talented people to grow faster. Our people (as we call them Kvants) know how to celebrate success (monthly team events, quarterly company events, employee awards, etc.) and work smart to achieve desired goals.

Disclaimer:

Outside Recruiters: Kvantum prefers to recruit candidates directly. We do not accept unsolicited agency resumes. Please do not contact Kvantum employees with unsolicited resumes. Any resume sent by an outside agency without an explicit signed Kvantum generated agency agreement in place will be considered unsolicited and will not be eligible for payment.