Lead Engineer - Frontend

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

React Developer – Trading & Fintech (Broker-Focused Solutions)

About Us:

At Tradelab Technologies Pvt Ltd, we don’t just build web applications, we create high-performance trading platforms tailored for brokers and financial institutions. Our platforms power real-time market analysis, ultra-low-latency trade execution, and seamless broker-client interactions.

What We Expect:

• 2+ years of front-end development experience, with 2+ years specializing in React.js.
• Deep expertise in React, Next.js, TypeScript, and state management libraries (Redux, Recoil, Zustand, etc.).
• Proven experience in building and optimizing ultra-responsive, high-performance trading platforms for brokers.
• Strong understanding of financial data visualization, real-time charting, order book mechanics, and trade execution workflows.
• Hands-on experience with real-time data streaming, WebSockets, FIX protocol, and API integrations for brokerage services.
• In-depth knowledge of performance optimization, server-side rendering, and rendering strategies for trading dashboards.
• Security-conscious mindset—you know how to build secure, compliant fintech applications that handle sensitive brokerage and trading data.
• A problem-solving mentality that thrives under pressure—brokers depend on our platforms for seamless trade execution, and we deliver nothing less than perfection.

What You Will Do:

• Lead the front-end development of trading applications designed specifically for brokers and financial institutions.
• Architect and optimize blazing-fast, low-latency web applications that ensure brokers can execute trades with unmatched speed and accuracy.
• Design and implement high-performance data visualization components—live stock charts, trade analytics, real-time market depth, and complex order books.
• Work closely with brokers, backend engineers, and UX designers to craft seamless, intuitive, and highly secure trading solutions.
• Solve hard problems at scale—whether it’s optimizing execution speeds, handling high-frequency WebSocket updates, or ensuring zero downtime during peak trading hours.
• Innovate and experiment with cutting-edge front-end technologies to push the boundaries of brokerage solutions.
• Own your work end-to-end—from concept to deployment, ensuring traders and brokers get a flawless user experience.

Must-Have Skills:

• Proven expertise in Front-end development with React.Js
• Deep expertise in React, Next.js, TypeScript, and state management libraries (Redux, Recoil, Zustand, etc.).
• Proven experience in building and optimizing ultra-responsive, high-performance trading platforms for brokers.
• Strong understanding of financial data visualization, real-time charting, order book mechanics, and trade execution workflows.
• Hands-on experience with real-time data streaming, WebSockets, FIX protocol, and API integrations for brokerage services.

Nice-to-Have Skills:

• Experience working on brokerage trading platforms, order management systems (OMS), or risk management tools.
• Contributions to open-source React trading libraries or a portfolio of real-time financial applications.
• Knowledge of regulatory compliance, order execution policies, and broker risk management tools.
• A track record of leading front-end teams, mentoring developers, and driving architectural decisions.

Why Join Us?

• Work with elite engineers and brokerage professionals in the fast-moving world of trading technology.
• Build platforms that brokers, traders, and financial institutions depend on daily.
• A culture that values bold innovation, real-time execution, and pushing the limits of brokerage tech.
• Expect challenges, high expectations, and a relentless pursuit of performance and precision.
• Competitive compensation, performance-driven growth, and a real opportunity to lead and shape the future of trading web applications for brokers.

🚀 Frontend Developer

Location: Remote

Type: Full-time

Experience: 5+ years (Intermediate to Senior Level)

We’re looking for a Frontend Developer who can own the entire frontend stack from frontend project architecture and performance optimization to design and UX polish.

About the Role

You’ll be the go-to person for everything frontend - designing and developing user-facing features, setting up UI architecture, and ensuring every interaction feels seamless.

You’ll work closely with the founders and backend engineers to shape the product experience from the ground up.

If you’re someone who thrives in startup environments, loves creative freedom, and enjoys wearing multiple hats (developer + designer + product thinker), this role is for you.

What You’ll Do

• Build and maintain high-performance web applications using ReactJS and NextJS
• Design clean, scalable frontend architecture and reusable components
• Take full ownership of UI/UX - from rough ideas to production-ready interfaces
• Implement stunning, responsive UIs with Tailwind CSS
• Handle state management (Jotai, Zustand, or your preferred modern library)
• Collaborate directly with backend and product teams to deliver delightful user experiences
• Optimize for performance, accessibility, and SEO
• Help shape the frontend culture, tech stack, and coding standards

What We’re Looking For

• 5+ years of professional frontend development experience
• Expert in ReactJS and NextJS
• Familiarity with VueJS and NuxtJS
• Strong experience with Tailwind CSS and component-driven design
• Strong understanding of UI/UX - you can design as well as build
• Ability to rapidly prototype and design mockups
• Experience with Figma or something similar for frontend prototyping
• Experience with TypeScript, Git, and modern dev tools
• Product mindset: you care about usability, not just code
• Startup-ready: self-driven, resourceful, and comfortable with fast iteration

Bonus Points

• Contributions to design systems or open-source frontend tools
• Familiarity with other frontend frameworks like Svelte/SvelteKit and VueJS/NuxtJS
• Knowledge of frontend performance optimization and SEO best practices

Why You’ll Love Working With Us

• 💡 Real Ownership: You’ll shape the entire frontend - architecture, tools, and design direction
• ⚡ Startup Energy: Small team, big impact - your work directly shapes the product and user experience
• 🕓 Flexible Hours & Remote Work: We care about output, not clock-ins
• ❤️ Creative Freedom: We value ideas, experimentation, and craftsmanship

·      7+ years of professional experience in front-end development.

·      5+ years of hands-on experience with React.js and its ecosystem (Redux, Context API, Hooks, etc.)

·      3+ Years Exp as Lead

·      Strong understanding of JavaScript (ES6+), HTML5, and CSS3.

·      Experience with RESTful APIs, GraphQL, and WebSocket integration.

·      Proficiency in modern build tools (Webpack, Vite, Babel, etc.).

·      Expertise in state management libraries (Redux, MobX) and React Query.

·      Solid understanding of UI/UX principles and responsive design.

·      Experience with testing frameworks (Jest, React Testing Library, Cypress, etc.).

Familiarity with modern CI/CD pipelines and version control tools (Git).

Job Role –

React Developer

Location- Hyderabad

Job Description-

• Develop end-to-end features (full stack) for users and be proficient with aspects of design and coding.

• Proficiency in automated testing/testing methodologies is a must.

• Create, maintain, and modify (where necessary) the data structure.

• Work with product owners to handle backlogs and new requests.

• Work on React projects using specifies tools and databases.

• Should have very good understanding of the technical approach and its viability.

• Should be able to push back and accurately assess the viability of their solutions.

• Should be comfortable adopting testing frameworks and developing with common industry practices such as test-driven development.

Person Specifications/ Requirements

• Good understanding and proven experience of web development and basic languages such as HTML and JavaScript.

• Strong programming experience.

• Must have experience with React.js, Node.js.

• Experience with Vue.js and Go is required.

• Strong understanding of software development tools, data structures and data modelling.

• Strong Data Analytical Skills.

• Should have Knowledge and experience of databases, e.g., MS SQL, MongoDB.

• Comfortable with optimizing your code and refactoring where necessary, researching ways to have responsive solutions.

• Good understanding of Test-Driven Development (TDD), including benchmarking and refactoring during the TDD process.

• Familiarity with popular authorization techniques such as JSON Web Tokens (JWTs) is required.

• Strong understanding of the software development lifecycle and awareness of commercial deadlines.

• Strong self-discipline and detail-oriented, important to meet client requirements in pressured timelines to a high quality.

• Bachelor's level business related qualification or 2+ years relevant experience in a similar environment.

• Strong understanding of the software development lifecycle.

• Strong verbal and written communications skills.

• Inquisitive, enthusiastic, passionate, and diligent.

• Keen to develop a broad range of business, technical and soft skills

• 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
  
   

Oddr is looking for an experienced senior frontend engineer to help us build modern web-based Cloud applications. The ideal candidate should be able to bring new ideas to the table and design and implement the frontend architecture with a strong emphasis on its robustness, testability, re-usability, performance, and ease of maintenance. As a senior engineer, the candidate should be able and willing to mentor and guide fellow team members as the team scales and grows. The candidate should demonstrate leadership qualities, be a self-motivated team player, and take pride in what they deliver.

The candidate should be interested in a long-term stable career to grow with our company. The candidate will need to work late night hours because of the geographic distribution of the team.

Technical Requirements:

• Strong proficiency in React.js and its core principles
• Solid understanding of JavaScript/TypeScript, CSS, HTML, and other standard frontend technologies and tools
• Experience with frontend test automation frameworks and tools
• Familiarity with RESTful APIs
• Experience with modern authorization techniques like JWT
• Experience with monitoring and improving frontend performance
• General understanding and knowledge of the UI/UX best practices
• Ability to write clean, well-structured code with proper abstraction and re-usability
• Ability to work to tight deadlines, manage priorities, and take responsibility for delivering to time and quality requirements
• Ability to understand business requirements and translate them into technical requirements
• Excellent communication skills
• Excellent problem-solving skills

Minimum qualifications required:

• Bachelor's degree or relevant certification from a reputable institute.
• 5 years of experience with at least 2 years of building enterprise applications using React.js in recent projects.

Responsibilities

• Developing new user-facing features using ReactJS
• Building reusable components and front-end libraries for future use
• Translating designs and wireframes into high quality code
• Optimizing components for maximum performance across a vast array of web-capable devices and browsers
• Understand business requirements and translate them into technical requirements
• Building robust applications that can handle both unexpected errors and heavy load

• 3+years experience in Reactjs
• Strong proficiency in JavaScript and Typescript
• Strong Knowledge of Redux/React Context/Hooks
• Strong Knowledge of frontend end technologies such as HTML/CSS
• Experience developing with responsive applications
• Knowledge of modern authorization mechanisms, such as JSON Web Token
• Familiarity with modern front-end build pipelines and tools like Webpack or Create React App
• Familiarity with Git