Javascript React Developer / Architect

The Opportunity At Certa, we are building the AI-native Operating System for global enterprise relationships. We have the clients (Fortune 100/500) and the robust backend technology. Now, under the guidance of our new Head of Design, we are elevating our experience to match the best consumer products in the world. We are looking for our First Design Engineer. You are the "missing link" between our pragmatic engineering requirements and our ambitious design vision. You won't just implement tickets; you will define how our product feels.

The Role This is not a standard Frontend Engineer role, nor is it a Product Designer role. This role is equal parts: Craft-focused Frontend Engineering: You write production-grade code, but you obsess over the details that others miss. Systems Thinking: You don't just build components; you build the architecture (Design System) that allows the rest of the team to build beautiful UI faster. Figma-to-Code Mastery: You bridge the gap between static Figma files and dynamic browser realities, moving fluidly between design and implementation.

What You Will Do

1. Architect the Design System & UI Patterns Take ownership of our internal design system. You will treat it as an internal product, creating a type-safe, accessible, and composable library in React & TypeScript. Manage the tokens, components, patterns, documentation, and governance required to scale design across a remote engineering team. Bridge the gap between Figma Variables/Tokens and code, ensuring a single source of truth for our visual language.
2. Make AI-Native UX Feel Trustworthy & Human Implement interaction patterns specifically for AI workflows: streaming states, progressive disclosure, and optimistic UI. Build for "explainability" and human-in-the-loop controls, ensuring users trust the system even when it automates complex tasks. Make complexity feel simple—especially when the system is performing sophisticated "smart" operations in the background.
3. Maximize Output with AI-Assisted Tooling Hyper-automate the mundane: Use AI coding assistants (Cursor, Copilot, etc.) to handle boilerplate and scaffolding, allowing you to spend 80% of your time on the 20% of the "feel" and "craft." Build tooling and guardrails (linting rules, visual checks, component playground workflows) that help the team ship high-fidelity UI consistently.
4. Bridge Design & Code (Figma-First) Live in Figma: You are expected to be as comfortable in Figma as you are in VS Code. You’ll tweak layouts, design missing states, and refine prototypes yourself. Push performance beyond just metrics: focus on rendering, bundle size, perceived speed, and interaction responsiveness. Raise the bar on accessibility and cross-browser behavior, ensuring the product is usable by everyone.

Must Haves

1. Expert Figma Skills: This is a primary requirement. You should be fluent in auto-layout, components, variables, and prototyping. You view Figma as a design environment and a technical spec.
2. AI-Assisted Workflow: You are a "power user" of AI tools (Cursor, Copilot, v0, etc.). You know how to leverage AI to move faster without sacrificing the quality of the final output.
3. Strong Frontend Foundation: Deep expertise in React + TypeScript with a track record of shipping complex, data-heavy UIs in production.
4. Demonstrated UI Craft: A portfolio showing obsession with spacing, typography, interaction detail, and motion. You likely have a "Folder of Inspiration" from the best apps in the world.
5. Design System Experience: Strong experience building and maintaining a design system: tokens, components, patterns, and documentation.
6. Accessibility Expertise: You build keyboard-first UX, understand screen reader behavior, and enforce correct ARIA usage by default.
7. Modern Tooling: Experience with Vite and modern frontend tooling; comfortable setting up and customizing JS tooling/build systems.

Why You? (The "Craft" Factor)

1. You are inspired by the design-engineering cultures of companies like Linear, Vercel, Family, or Arc (The Browser Company).
2. You get annoyed when a modal closes without an exit animation.
3. You understand that latency is a UX problem, and you use optimistic UI updates to make the app feel instant.
4. You believe enterprise software doesn't have to look like a spreadsheet from 2005—it should feel as fluid as the best consumer apps.
5. You are an "AI-augmented" engineer who uses modern tools to do the work of three people while maintaining the taste of an artisan.

Job Summary

We are seeking a skilled Frontend Developer with expertise in React.js and React Flow to design and implement dynamic, interactive user interfaces. You will be responsible for building scalable web applications and visual workflows that empower users to interact with complex data and processes intuitively.

🛠️ Key Responsibilities

• Develop responsive and high-performance web applications using React.js
• Design and implement interactive flow-based UIs using React Flow
• Collaborate with UX/UI designers to translate wireframes into functional components
• Optimize components for maximum performance across devices and browsers
• Integrate RESTful APIs and manage application state using tools like Redux or Zustand
• Write clean, maintainable, and well-documented code
• Participate in code reviews, testing, and continuous integration processes

✅ Required Skills

• Strong proficiency in JavaScript (ES6+) and React.js
• Hands-on experience with React Flow for building node-based editors or workflow diagrams
• Familiarity with state management libraries (Redux, Zustand, Recoil)
• Experience with HTML5, CSS3, and modern CSS frameworks (e.g., Tailwind, Styled Components)
• Understanding of component lifecycle, hooks, and functional programming
• Knowledge of Git, CI/CD pipelines, and agile development practices

💡 Preferred Qualifications

• Experience with TypeScript
• Familiarity with backend integration (Node.js, GraphQL, etc.)
• Exposure to data visualization libraries (D3.js, Chart.js)
• Understanding of accessibility and performance optimization

Are you an exceptional UI Developer with a passion for creating mesmerizing user interfaces? We're seeking a Senior UI Developer who thrives on leveraging the power of React to craft visually stunning and highly interactive user experiences. If you're a trailblazer in the realm of UI design and development, and you're ready to make a substantial impact with your skills, we want you to be a key player in our team.

Your Role and Responsibilities:

UI Enthusiast: Showcase your mastery of user interface design by leading the charge in developing captivating user interfaces for both web and mobile applications. Your UI skills will be the driving force behind creating experiences that resonate across various devices and platforms.

React Expertise: Demonstrate your coding brilliance by harnessing the potential of React. Create UI components that are both aesthetically pleasing and technologically advanced, pushing the boundaries of modern web development.

Design-Driven Development: Collaborate closely with our design team to seamlessly transform wireframes and mockups into tangible UI interfaces that effortlessly embody the union of visual aesthetics and functional excellence.

Performance Sculptor: Dive into the intricacies of front-end code within the React framework, sculpting and optimizing to achieve lightning-fast loading times and seamless user interactions.

Browser Harmony: Ensure uniformity in appearance and behavior across an array of browsers and devices, taking into account the nuances of each platform to create a consistent user experience.

Code Craftsmanship: Exemplify your commitment to code quality by producing elegantly structured, meticulously documented, and easily maintainable code that sets new standards in our development endeavors.

Synergy of Integration: Collaborate seamlessly with our backend developers, bridging the gap between UI components and backend services and APIs to create a holistic and efficient application ecosystem.

Agile Advocate: Embrace and champion agile methodologies, actively engaging in sprint planning, daily stand-ups, and contributing to code reviews to foster a collaborative and iterative development environment.

Creative Problem-Solving: Dive headfirst into complex UI challenges, emerging with innovative solutions that enhance user experiences and keep the development process on track.

Mentorship: Elevate junior developers through your guidance and insights, empowering them to amplify their expertise in UI development and React.

Trendsetter: Stay at the forefront of UI development trends, constantly immersing yourself in the latest front-end technologies, particularly within the React ecosystem.

Key Skills:

Proficiency in HTML, CSS, and JavaScript

Expert-level experience with React and related libraries

Strong UI/UX design understanding

Responsive and mobile-first design principles

Cross-browser compatibility and accessibility standards

Performance optimization for UI components

Agile development methodologies

Strong problem-solving skills

Excellent communication and collaboration abilities

Your Skills and Qualifications:

Bachelor's degree in Computer Science, Web Design, or a related field (or equivalent practical experience).

Proven track record as a UI Developer or Front-End Developer, highlighted by an impressive portfolio showcasing your React-powered UI design and development prowess.

Expert-level proficiency in HTML, CSS, JavaScript, and React framework, complemented by familiarity with relevant libraries and tools.

UI-focused mindset with a passion for responsive and mobile-first design within the React realm.

Deep appreciation for UI/UX design principles, enabling seamless collaboration with designers to achieve a harmonious user experience.

Comprehensive understanding of cross-browser compatibility and dedication to accessibility standards.

Accomplished in optimizing UI components for superior performance and speed within the React framework.

Resourceful problem solver, adept at swiftly identifying and addressing front-end issues.

Exceptional communicator, fostering a collaborative and inclusive environment within the team.

Proficient in version control systems (e.g., Git) and experienced in contributing to code review processes.

Exposure to Agile/Scrum methodologies is a significant advantage.

Strong leadership skills, with a history of mentoring junior developers in React-based development scenarios.

Join us in reshaping user interfaces through the captivating lens of React. If you're fueled by a passion for UI excellence and have the technical prowess to match, we invite you to share your resume, portfolio, and relevant code samples that reflect your remarkable journey in the realm of UI and React. Your UI skills will be the cornerstone of our dynamic team.

Job description:- 

• 2.5+ year of experience in Development.
• Strong experience of Angular 2+ and above along with other technologies like HTML5, CSS, jQuery, AJAX with good knowledge of ECMA Scripts.
• Strong knowledge of JS Fundamentals.
• Design & development of Angular applications as per desired specifications, along with experience in frameworks/libraries like jQuery, Bootstrap, Typescript etc.
• Architecture design, development, testing and maintenance of Web Apps, Implementation based on Angular Application MVC Patterns.
• Own end to end product modules/features (from the requirement to going live)- Design & code review, troubleshoot & help team members on issues.
• Gather requirements by interacting directly with the end-users.
• Research on open source framework/technology required for developing the feature/application.

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.

• 4+ years experience working as a react.js developer.
• Knowledge of REACT tools including React.js, Webpack, Enzyme, Redux, and Flux.
• In-depth knowledge of JavaScript, CSS, HTML, and front-end languages.
• 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.

1. Hands on Expert in UI/Front End Engineering/Development specifically React,
2. Redux, NodeJs who can code, design and own front end development and code.
3. Experience in React v16, Reach Redux, React Fibre and JavaScript advance (ES6+),
4. Experience in Advance State Management [Example: Redux, Mobx, RxJs, GraphQL etc]
5. Good experience on UI framework like Angular JS/ Vue JS/ Ext JS/jQuery/ React JS or equivalent SPA framework
6. Experience in HTML5, Javascript CSS3, ExpressJs, GraphQL
7. Strong understanding of Rest APIs, Web Sockets, Service Workers, HTTP/S Protocol, Web Security and Cloud Infrastructure, CI/CD, Web Packaging and Optimization, UX and Styling.
8. Expertise in Advance Java-Scripts
9. Knowledge and experience with Data Structure and Design methodologies.
10. Problem solving skill
11. Good experience working in Agile/Scrum teams
12. Good written and verbal communication skills.