ReactJS Developer

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

We need a trained Website Developer.

Must have a experience of 3 to 5 years.

Knowledge of React, Nod JS, HTML CSS.

About Hop:

We are a London, UK based FinTech startup with a subsidiary in India. Hop is working towards building the next generation digital banking platform for seamless and economical currency exchange, with technology at the crux of it. In a technology driven era, many financial services platforms still lack the customer experience and are cumbersome to use. Hop aims at building a ‘state of the art’ tech-centric, customer focused solution.

moneyHOP is India’s first cross-border neo-bank providing millennials the ability to ‘Send’ & ‘Spend’ conveniently and economically across the globe using HOPRemit (An online remittance portal) and HOP app + Card (A multi-currency bank account).

This position is a crucially important position in the firm and the person hired will have the liberty to drive the product and provide direction in line with business needs.

About Individual

Looking for an enthusiastic individual who is passionate about technology and has worked with either a start-up or a blue-chip firm in the past.

The candidate needs to be a multi-tasker, highly self-motivated, self-starter and have the ability to work in a high stress environment. He/she should be tech savvy and willing to embrace new technology comfortably.

Ideally, the candidate should have experience working with the technology stack in the scalable and high growth mobile application software.

General Skills

• 3-4 years of experience in Frontend development.
• Bachelor's degree in Computer Science, Information Science, or equivalent practical experience.
• Exposure to Behaviour Driven Development and experience in programming and testing.
• Excellent verbal and written communication skills.
• Good time management and organizational skills.
• Dependability
• Accountability and Ownership
• Right attitude and growth mindset
• Trust-worthiness
• Ability to embrace new technologies
• Ability to get work done
• Has good code reviewing skills for conformance.
• Has good software testing skills and good code writing skills.

Technical Skills

• Relevant work experience as a UI Developer. Proficient in JavaScript , ReactJS and/or React Native, Angular , JQuery Experience with HTML, CSS, Knowledge of web services and related technologies (REST) Experience with Web Services and API integration
• Candidate should have a stronghold on HTML & CSS
• Can understand and troubleshoot REST APIs calls
• Database administration and management of a hosting environment such as AWS.
• Knowledge of SASS & LESS will be a plus as well
• Sound understanding of relational and non-relational DB systems such as MySQL, Postgres, MongoDB etc.
• Has experience dealing with JIRA (issue tracking tools), Confluence (knowledge management) tools.
• Experience with building and maintaining microservices.
• Experience with building and integrating the core system with external APIS.
• Good to have: Domain knowledge in the BFSI tech stack.

Day-to-Day Responsibilities 

1. Use JavaScript and cutting-edge JS frameworks to develop front end applications that follow industry-standard design patterns, development methodologies, and deployment models
2. Solve and articulate complex problems through application design, product development, and user experiences. 
3. Develop software used by people who are not software developers--ensure the exceptional software you create influences them to be exceptional professionals in their respective fields
4. Collaborate with other programmers and mentor junior engineers through the development process
5. Leverage the knowledge of your peers to better understand business trends, customer communities, and technology adoption patterns
6. Evolve your language skills in JavaScript by staying current with complementary programming languages, development methodologies, user interface design techniques, and database tools.

1) Understand client requirements and functionalities. 

2) Write well-designed, testable, efficient code. 

3) Responsible for solving complex technical issues. 

4) Ensure quality projects are delivered within defined timelines. 

5) Active involvement in client communication to understand functional requirements. 

6) Maintain high standards of quality for code, documentation and other deliverables. 

Required Skills 

1) Good experience in Angular Latest Versions 

2) Hand on Node.JS./Express JS 

3) Database : MYSQL/MongoDB 

4) Experience in Java Script, Typescript. 

5)Good experience in HTML5, CSS3, JavaScript, Jquery 

6) Experience working in an Agile environment. 

7) Good communication skills.

We are building a workspace for Marketing teams - Think Webflow for Marketing teams, Grafana for Marketing teams who operate on large data sets and need a clear intuitive interface to look at all their data.

Traditionally Marketing teams have always had to depend on a large BI team to provide them with the data they need to make decisions. Clarisights eliminates this by giving Marketing teams everything they need in one intuitive, collaborative reporting platform.

We work with large enterprise Marketing teams around the world like Delivery Hero - The world's largest food delivery co., HelloFresh the world's largest mealkits delivery co. etc.

Our platform is central to how business teams make decisions and you will work on the interface that these teams use. We are helping non technical business users get comfortable with data by giving them a platform they can use to drive.

What makes this role challenging? Think Google Docs, Slides and Sheets all combined in one platform. We have a collaborative text editor which is used by teams together and we built our table grid which is extremely powerful. Tables, being one of the heaviest and most used widgets we have, have records composed of metric data(averages, share percentages, comparison data), multiple creatives(images, videos, gifs), trends(charts inside each cell) and a lot more.

The huge amount of data points naturally increases the amount of DOM nodes and thus it becomes memory heavy and CPU intensive to run the app in the browser. One table can have 500 records that the users can scroll through at once. Now imagine having 10+ of such tables in one tab, and each report comprising of multiple tabs. And we also support features like drilldowns/breakdowns, column freezing, row freezing, in the tables all while ensuring a smooth user experience.

We decided to build it from scratch using React Virtualize since most table libraries did not give us the performance or features we need. We also extensively use charts to visualize data and as we are scaling, a lot of these components have to be rebuilt to handle the volume of data we process.

We are only getting started, we want to make our platform a lot more collaborative and immersive by giving teams ability to interact with charts by adding annotations and ability to tag team members and leave notes for them. This might seem a solved problem when you look at collaboration on Google Docs but it's an extremely tricky problem for us as we don't deal with static data the way you have it with Google Docs.

Unlike read only dashboards which do not allow edits after building, our platform is meant for collaboration within teams. Think of how shitty collaboration was for design teams before Figma.

We are looking for someone who obsesses over performance and is comfortable with profiling performance, can think of frontend architecture. We are also looking for a lead who can mentor the team on performance and scale.

While working with such complex interfaces, often times, performance and the tech becomes a bottleneck for the user experience we strive for. We are looking for someone who —

• Understands fundamentals of Application Design and has designed/architected applications from scratch.
• Has worked on large-scale applications, and setup/maintained its data pipelines (data flows from backend to frontend)
• Has architected efficient and reusable front-end systems that drive complex web applications

• 3+ years of JavaScript experience, including concepts like asynchronous programming, closures, types.
• HTML/CSS experience, including concepts like layout, specificity, cross browser compatibility, and accessibility
• Experience with browser APIs and optimizing frontend performance
• Previous experience with dashboard apps, charts framework, window virtualisation
• Has written Generators for project setup
• Comfortable with tech like Postgres, Docker, Rails
• Understands tooling like Webpack, Babel

Experience with React and Typescript is preferable but not necessary.

• Understanding the data flow and familiarise oneself with the app components
• One feature/task like updating something that touches majority of the app — this is again aimed to get familiarity with the whole codebase in the quickest way
• Synchronising the data pipelines by adopting better serialisation protocols
• Creating avenues to improve app performance (by profiling and benchmarking)