ReactJs Developer

📍 Position : Lead Angular Developer

📅 Experience : 7 to 12 years

🧑‍💼 Open Positions : 2

📍 Work Location : Bangalore, Pune, Chennai

🏢 Work Mode : Hybrid – 3 days/week in-office

📅 Notice Period : Immediate to 15 days preferred

🔧 Key Responsibilities :

• Lead the design, development, and optimization of responsive and scalable web applications.
• Collaborate closely with UI/UX designers to translate wireframes into high-quality code.
• Drive component-based architecture using modern Angular frameworks.
• Develop reusable, testable, and efficient frontend components using Angular (v2+), JavaScript/ES6, and HTML5/CSS3.
• Ensure seamless integration with APIs, services, and backend systems.
• Conduct thorough unit testing and support integration testing using tools like Jasmine, Karma, Cypress, or similar.
• Promote coding best practices, maintain code quality, and align with SOLID principles and modern design patterns.
• Participate in pair programming, Agile, and Extreme Programming (XP) practices.

🛠️ Must-Have Technical Skills :

• Expertise in Angular (latest versions) and core JavaScript/ES6
• Working knowledge of ReactJS (preferred)
• Strong understanding of HTML5, CSS3, and responsive design techniques
• Familiarity with design tools : Figma, Adobe XD, InVision, Sketch
• Performance optimization for web apps and knowledge of deployment to various web servers
• Testing frameworks : Jasmine, Karma, Cypress, or similar

🎯 Ideal Candidate Profile :

• Currently working as an Individual Contributor in a product-based company
• Proven expertise in leading frontend modules or small teams
• Ability to build user interfaces that are beautiful, functional, and intuitive
• Passionate about clean code and frontend craftsmanship
• Strong communicator and a natural collaborator

🧪 Interview Process :

1. Round 1 : Technical pairing assessment
2. Round 2 : Technical round with panel
3. Round 3 : HR discussion

Role & Responsibilities

4-7 years of Strong proficiency in Full stack Development of Web Applications and experience in shipping production applications.

Experience of using Typescript for development would be a mandate.

Frontend- next.js, react.js, vue.js and bit for svelte kit are highly preferred Backend- node.js, react.js, express.js

B.Tech in Computer Science Engineering from Tier 1 Colleges preferred

Experienced with Tailwind CSS

Experienced with TDD for component and end-to-end testing

Ableto set up CI/CD pipelines for testing and deployment (canary, staging) using Github actions according to project

Entrepreneurial mindset with strong decision-making skills

Ability to move quickly without breaking things too much (we are dreamers)

Ability to work under immense pressure which is balanced by a sense of responsibility and ownership

Comfortable working with a Git style workflow where every commit deploys to a staging environment and merged pull requests deploy to production

Company

Stackera is a leading Fintech Development Services company located in Pune. We are dedicated to delivering quality and innovative solutions to our clients with seamless service.

About the Role

We are looking for a Frontend Developer who is highly skilled in Next.js and modern JavaScript frameworks to join our frontend engineering team. This role is ideal for someone who is passionate about building user-friendly interfaces that are fast, responsive, and scalable.

You’ll be working on high-impact fintech products that require both technical excellence and creative thinking. Your work will directly influence user experience and engagement across a range of web applications, including financial dashboards, analytics platforms, and client portals.

What You’ll Do

• Design, develop, and maintain modern web applications using Next.js, React.js, and associated technologies.
• Collaborate with cross-functional teams including backend developers, UI/UX designers, and product owners.
• Translate UI/UX design wireframes into high-quality code with pixel-perfect accuracy.
• Build responsive, accessible, and cross-browser compatible components.
• Optimize application performance for speed, scalability, and usability.
• Integrate front-end logic with RESTful APIs and real-time systems (e.g., WebSockets).
• Write clean, reusable code and maintain clear documentation.
• Participate in sprint planning, daily stand-ups, and code reviews to ensure continuous improvement.
• Ensure security best practices in frontend implementation.

Required Qualifications

• Bachelor’s degree in Computer Science, Information Technology, or a related field.
• 5+ years of hands-on experience in frontend development using Next.js and React.js.
• Proficient in Redux, Hooks, Context API, and component-based architecture.
• Solid understanding of HTML5, CSS3, JavaScript (ES6+), and responsive design principles.
• Experience building high-performance web applications with real-time data updates.
• Familiarity with frontend testing frameworks like Jest, Cypress, or similar.
• Ability to work in an agile environment with CI/CD processes.

Preferred (Good to Have)

• Exposure to Web3 technologies
• Experience with Ethereum, Solana, or other blockchain ecosystems.
• Understanding of containerized deployment using Docker.
• Familiarity with CI/CD tools like GitHub Actions, Jenkins, or GitLab CI.

What We Offer

• A collaborative and supportive team environment
• Exposure to cutting-edge projects in fintech and emerging tech
• Freedom to innovate and bring ideas to life
• Competitive compensation and performance-based growth
• Flexible work hours and focus on work-life balance

Responsibilities 
- Develop new user-facing features 
- Ensure the technical feasibility of UI/UX designs 
- Optimize application for maximum speed

Skills And Qualifications 
- 2+ years of experience in ReactJS and Redux 
- 1+ completed project of reasonable size using server-side rendering 
- Knowledge of Preact is a plus 
- Proficient understanding of web markup, including HTML5, CSS3 
- Basic understanding of server-side CSS pre-processing platforms, such as LESS and SASS 
- Good understanding of asynchronous request handling, partial page updates, and AJAX 
- Proficient understanding of cross-browser compatibility issues and ways to work around them. 
- Proficient understanding of Git

 Lead Frontend Developer

We are an early stage EdTech startup founded by people from IIT-D, IIM-B, Flipkart, Google, Cure.Fit & ICICI Venture. Our vision is to help each child discover their hidden treasures. We want to provide the best learning platform to ensure all round holistic development of children (social, physical, intellectual, cultural, and emotional) by enabling them to pursue their passion. If you are passionate about helping the future generations to have holistic development and achieve their full potential, come talk to us.

Responsibilities :

1. Develop user-facing stack from scratch
2. Build reusable code and libraries for future use
3. Ensure the technical feasibility of UI/UX designs
4. Optimize application for maximum speed and scalability
5. Collaborate with other team members and stakeholders

Technology Skills :

1. Proven 4 years work experience as a ReactJS Frontend developer
2. In-depth understanding of the entire web development process (design, development and deployment)
3. Good experience with Typescript and ReactJS (17.x). NodeJS knowledge is a plus.
4. Familiarity with Unit Testing Frameworks, UI Testing, Monorepos and Graphql principles
5. Knowledge of Alerting and Monitoring tools
6. Knowledge of SPA principles
7. UI Performance: should have hands on experience of optimising page load, rendering, caching
8. Sense for appeal & aesthetics from a usability perspective.

Soft Skills :

1. Obsessed with best practices, structuring, documentation and have an eye for detail.
2. Self starter with a high level of drive and commitment.
3. High energy and drive to work in a startup environment.
4. Conceptual thinking, flexibility and ability to juggle with multiple responsibilities.
5. Ability to work under pressure and confidence to deal with complex issues.
6. Good communication skills.
7. Hands-on and detail oriented.

• Develop new user -facing features
• Build reusable code and libraries for future use
• Ensure the technical feasibility of UI/UX designs
• Optimize application for maximum speed and scalability
• Assure that all user input is validated before submitting to back-end
• Meeting with the development team to discuss user interface ideas and applications.
• Reviewing application requirements and interface designs.
• Identifying web-based user interactions.
• Developing and implementing highly responsive user interface components using react concepts.
• Writing application interface codes using JavaScript following react.js workflows.
• Troubleshooting interface software and debugging application codes.
• Developing and implementing front-end architecture to support user interface concepts.
• Monitoring and improving front-end performance.
• Documenting application changes and developing updates.

• Bachelor’s degree in computer science, information technology, or a similar field.
• Minimum 2 years experience working as a react.js developer.
• In-depth knowledge of JavaScript, CSS, HTML, and front-end languages.
• Knowledge of REACT tools including React.js, Web pack, Enzyme, Redux, and Flux.
• Experience with user interface design.
• Knowledge of performance testing frameworks including Mocha and Jest.
• Experience with browser-based debugging and performance testing software.
• Excellent troubleshooting skills.
• Good project management skills.
  
  About Haber
  At HABER, we are solving the challenges of tomorrow, today. We are bringing together the best minds in process, engineering, computing and chemistry to develop solutions to address some of the world’s toughest challenges – water and energy scarcity and sustainability. Over the past few years there has been an explosion in unstructured data across industry driven by affordable sensing technologies and adoption of analytical instrumentation. This sudden increase in data has resulted in industries spending significant amounts of time collecting, organizing and analysing content and very little time driving value with the data. HABER is focused on reversing this trend by helping our customers spend less time collecting and analysing data and more time using HABER’s platform to drive efficiency, identify issues before they happen and uncover hidden potential. Follow us on Twitter @haber_tech or LinkedIn at linkedin.com/company/haber-technologies or visit us at haberwater.com/careers
  
   

Requirements

• 2-5 years of experience as a front-end developer
• Experienced in developing applications using JavaScript, ReactJS, Redux, Redux Saga, NodeJS, HTML5, CSS3/CSS4 and other UI technologies.
• Understanding and experience with ES6 concepts, asynchronous processing, partial page refresh, DOM traversal and manipulation.
• Experience with REST API construction, documentation, and architecture, including API description languages like Swagger.
• Comfortable writing Unit Test Cases (Enzyme/ Jest)
• Familiar with cloud services: AWS, Dev-ops such as Git, Jira, Confluence
• Good to have experience/knowledge of
  • Spring (MVC, IOP/DI, REST, Security)
  • Docker,
  • Scala,
  • Python
• Able to connect the dots between code and business value

Responsibilities

• Engage in high level conversations about business strategy and the role tech plays in it
• Write well-designed, testable, and efficient code that powers our application
• Write specs and do planning for everything we build
• Conduct application analysis, testing, and debugging
• Diligently document code to keep it clean and transparent
• Ensure cross-browser and device compatibility

You Are

• You believe it’s always on you to make sure anything you do is a success.
• You have the ability to make quick and effective decisions.
• In love with a challenge. You revel in solving problems and want a job that pushes you out of your comfort zone.
• Open to change. You’re inspired by the endless ways in which everything we do can always be improved.

Add-Ons/Interview Process

• You should be comfortable working in a Start-up for in-house product development.
• Will not be engaged with any Client, but with the internal team (in India & the US).
• Will be provided a hands-on exercise to complete and submit as a part of interview.