UI Architect

Frontend Engineer

React, TypeScript & Production Web Applications

📍 Mumbai (On-site) | Full-time | 3-5 years

About the Role:

Unico Connect is an AI-first technology partner that builds custom mobile, web, and AI products for clients across multiple geographies.

We are hiring a Frontend Engineer who will build production-grade web applications across customer engagements, partnering closely with designers, backend engineers, and AI engineers.

The mandatory requirement for this role is hands-on production experience shipping React applications, with ownership of at least one feature area end to end including state, API integration, and testing.

The role is hands-on.

Expect to implement complex flows, integrate with backend and AI services, contribute to a shared design system, write tests, and review the work of others.

A typical week includes a design handoff review, implementation of a new flow, a code review session, and a working call with a backend engineer on API contracts.

Responsibilities:

Production UI Development

Build production-grade React UI for customer engagements, including complex forms, dashboards, data-dense views, and AI-driven interactions.

API Integration

Integrate with REST and GraphQL APIs.

Handle authentication, streaming responses (Server-Sent Events, WebSockets), retries, and graceful error states.

State Management

Build state architecture using Redux, Zustand, Jotai, or equivalent.

Handle async state, optimistic updates, and cross-component coordination.

Design System Contribution

Implement components within an established design system.

Maintain token discipline and contribute back to shared components.

Testing

Write unit, integration, and end-to-end tests using Jest, React Testing Library, and Playwright or Cypress.

Performance and Accessibility

Profile and optimise rendering and bundle size.

Apply WCAG 2.1 AA practices in everyday work.

AI-Assisted Development

Use Claude, Cursor, and similar tools day to day.

Build discipline for reviewing and validating AI-generated code.

Requirements:

Hands-on Production React Experience (Mandatory)

Must have personally shipped at least one feature area end to end in a production React application, owning state, API integration, and testing.

POCs and internal tools alone do not qualify.

3 to 5 Years of Professional Frontend Engineering Experience

Strong JavaScript, TypeScript, and React

Solid with hooks, context, and modern patterns.

Working comfort with Next.js (SSR, SSG, app router).

State Management

Production experience with Redux, Zustand, Jotai, or equivalent.

CSS and Styling

Strong with Tailwind, CSS Modules, or CSS-in-JS.

Comfortable building responsive layouts.

REST and GraphQL

Comfortable consuming both.

Working knowledge of streaming responses and async patterns.

Testing Fluency

Jest, React Testing Library, and at least one of Playwright or Cypress.

Git and CI/CD Basics

Comfortable with feature branching, pull requests, and CI-integrated test runs.

Strong Written and Spoken English Communication

Nice to Have:

• Experience with editor or canvas UIs
• Storybook
• Animation libraries (Framer Motion, GSAP)
• Exposure to AI-driven UI patterns
• Visual regression testing tools

Key Responsibilities:

² Develop and maintain responsive web applications using React.

² Collaborate with UX/UI designers to translate wireframes and mockups into functional code.

² Optimize applications for maximum speed and scalability.

² Write clean, maintainable, and efficient code following best practices.

² Participate in code reviews and contribute to team knowledge sharing.

² Troubleshoot and debug applications to enhance performance.

² Stay up-to-date with the latest industry trends and technologies to ensure our tech stack remains cutting-edge.

Qualifications:

² Current SDE 3 designation or equivalent experience in a senior development role.

² 5+ years of experience in software development, with a strong focus on frontend technologies, particularly React.

² Proficiency in JavaScript (ES6+), HTML, and CSS, with a deep understanding of modern web development practices.

² Experience with state management libraries (e.g., Redux, MobX) and routing solutions.

² Strong knowledge of RESTful APIs and experience with modern build tools (Webpack, Babel).

² Experience with testing frameworks (e.g., Jest, React Testing Library) and test-driven development (TDD).

² Excellent problem-solving skills and the ability to work collaboratively in a fast-paced environment.

• 1 - 5 years of Experience
• Strong Experience in HTML 5, CSS 3 and Bootstrap 3,4 
• Material UI
• Responsive design in website and mobile
• Grid System
• React.js an added advantage

Ability to learn quickly and work in a fastest growing technology

Requirements

• Strong knowledge of Javascript fundamentals, Object-oriented programming, and Web concepts with 3-7 years of relevant experience in building web apps at scale.
• You must have a strong understanding of semantic HTML / HTML5, CSS / CSS3.
• Experience or familiarity with React.js or Vue.s, and build tools like Webpack, Rollup, etc.
• Curiosity to go in-depth of codebases and libraries and have the ability to set it up from scratch.
• Familiarity with Server Side Rendering (SSR) and website SEO

What You’ll Do

• Build website and frontend platform.
• Build monitoring graphs, services directory, ML model management UI. Make sure SEO and website performance are top-notch.
• Work with design teams and ability to lead other frontend engineers when we expand our team
• Take good design decisions which scale and follow best practices.

Qapita is a SaaS-Net startup with offices in India & Singapore. Qapita’s vision is to transform how equity is managed and traded in the private capital markets in this region. Qapita’s software solution seeks to automate the equity management process for startups including workflows around CapTables, ESOPs, Due-diligence, and transactions. Qapita’s market place solution seeks to facilitate liquidity to ESOP holders and shareholders via structured liquidity programs and secondary transactions. Qapita seeks to automate all processes for equity matters in private markets via its digital platform.

We are looking for a Senior Frontend Developer who is curious, craves for new challenges and loves to solve problems using latest technology. In this role, you will be responsible for developing and implementing user interface components using React.js concepts and workflows such as Redux, Flux, and Webpack.

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

Our Tech stack:

Frontend: React, Typescript, Html, SCSS

Backend: Linux (Ubuntu), ASP.NET Core, C#, Nginx, MongoDB, EventStoreDB

Responsibilities: As a Senior Frontend Developer, you will be

• 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 code using TypeScript following React.js workflows.

• Troubleshooting interface software and debugging application code.

• Developing and implementing front-end architecture to support user interface concepts.

• Monitoring and improving front-end performance.

• Documenting application changes and developing updates.

Desired Skills and Experience :

• Bachelor's degree in Computer Science, Information Technology, or a similar field.

• Previous experience working as a React.js Developer (4+ years).

• In-depth knowledge of JavaScript, CSS, HTML and front-end languages.

• Knowledge of TypeScript a plus.

• Knowledge of React tools including React.js, Webpack, Redux.

• Knowledge of performance testing frameworks including Mocha and Jest.

• Experience with browser-based debugging and performance testing software.

• Excellent troubleshooting skills.

Responsibilities

• Build applications using JavaScript frameworks such as React.js, Vue.js or svelte.js

• Build reusable UI components, ensuring that UI code base is scalable and maintainable

• Ensure the technical feasibility of UI/UX designs

• Optimize application for maximum speed and scalability

• Good in writing unit test cases, and can follow test driven development approach

• Participate in user experience design and architecture initiatives

• Collaborate with other team members and stakeholders to ensure smooth delivery and elicit new

requirements

• Perform troubleshooting steps, if any, in the phase of implementation, customization, and

configuration

• Having good debugging skills and proficiency in tool to build next-generation web apps

Mandatory Skills

• Knowledge of Functional and OO JavaScript/ES6

• Built web Applications using HTML5, CSS3, and JavaScript with Frameworks like React.js(Hooks

and context API), Vue.Js and svelte.js

• Basic understanding of Typescript and type language concepts

• Clear fundamental understanding of server-side rendered apps, experience with frameworks like

Next,js or Nuxt.js is the Best

• Good understanding of lib and frameworks like Webpack (4.0), lodash, any charting lib like d3.js or

Victory

• Expertise in using JavaScript state Management libraries such as Redux or Mobx

• Prior experience in building responsive design layouts using a formal framework like Material UI.

• Familiarity with best practices (web security concepts, ensuring browser & device compatibility,

etc.)

• Experience in development and debugging tools for cross-browser issues

• Working knowledge of integrating with RESTful APIs for server-side functionality

• Ability to work well individually and in a group setting, under pressure and deadlines

Requirements

• B.Tech/ B.S. or M.Tech/ M.S. in Computer Science, IT or related field.

• 5-8 years of experience.

Desirable Skills

• Hands-on experience with using Git (handling branching and merging), any DevOps pipeline,

• Experience with Agile methodologies

•  6+ years of web UI development experience including 4+ years of deep, hands on experience in building robust, highly reusable and responsive web applications using HTML, CSS3, SVG, React, Redux, Thunk ecosystem
• Great problem-solving skills with solid data structures and algorithms knowledge
• Strong ability to translate the design/wireframes into reusable micro components
• Experience of leading, coaching and mentoring junior developers with good delegation and time-management skills
• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model
• Thorough understanding of React.js and its core principles and has extensively worked with Redux, Thunk, Axios etc
• Knowledge of modern authorization mechanisms, such as JSON Web Token, Oauth2 etc
• Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
• A knack for perfection, benchmarking and optimization
• Writing and maintaining batch jobs to streamline processes (Shell, Perl etc).
• Strong understanding of Agile and Lean software development processes and practices
• Worked with WebSocket, Push notifications etc
• Experience working with local-storage, cookies etc
• Proficient understanding of CORS issues and ways to work with such issues.
• Proficient understanding of social network APIs.
• Experience with data structure libraries (e.g., Immutable.js)
• Inclined to take ownership of tasks and to ship highly polished products with excellent attention to detail.
• Strong verbal and written communication skills in English.
• BE/BTech in Computer Science or a related field or equivalent practical experience

• In-depth knowledge in Core Python with Django building end to endapplications development.
• Experience in Web technologies-HTML, CSS, Javascript.

• Database - SQL Server/Postgres/ NoSQL database.
  
  
• Good understanding of Algorithms, data structures.
• Knowledge in ORM (Object Relational Mapper) libraries.
  
  
• Experience in integrating multiple data sources and databases into onesystem.
  
  
• Knowledge in REST / SOAP API
• Knowledge in version control tools like Git
• Experience with various cloud technologies.