Full-Stack Developer (Frontend Focus)

Company Description

LvlUp Labz, a Mumbai-based software development agency, partners with innovative businesses to build custom applications, platforms, and systems that drive real results. The company specializes in creating custom web and mobile applications, fintech solutions, SaaS platforms, and API development. Serving industries such as fintech, e-commerce, iGaming, and healthcare technology, LvlUp Labz is expanding its engineering team to work on exciting projects, including a real-time betting exchange platform for an international iGaming client, alongside fintech applications and SaaS solutions.

Role Description

This is a full-time on-site role for a Full-Stack Developer (Frontend Focus) located in Mumbai. You'll build the iGaming user interface—creating complex, real-time React components that display live odds, handle bet placement, and manage thousands of updates per second. While your primary focus is frontend development, you'll write Node.js APIs when needed and collaborate closely with backend developers.

What You'll Do

• Build iGaming UI components (live odds display, markets, real-time updates)
• Implement real-time features using WebSocket / Socket.io with optimistic updates and live data streaming
• Develop responsive, high-performance React applications handling thousands of concurrent updates
• Integrate with Node.js backend APIs and manage complex application state (Redux Toolkit)
• Write Node.js APIs for frontend needs and understand backend integration contracts
• Optimize frontend performance (virtualization, memoization, lazy loading, code splitting)
• Collaborate with designers to implement pixel-perfect, responsive betting interfaces
• Participate in code reviews and maintain high code quality standards
• Stay up-to-date with React / Next.js best practices and modern frontend trends

Work Style

We embrace "Vibe Coding"—using AI coding tools (Cursor, Claude Code, GitHub Copilot) daily to accelerate development and focus on solving interesting UI / UX challenges rather than boilerplate code. You'll ship features faster and spend more time on creative problem-solving.

Qualifications

Required :

Nice to Have :

Our Tech Stack

Frontend : React 19, Next.js 15, TypeScript, Redux Toolkit, Socket.io-client, Tailwind CSS, Radix UI

Backend : Node.js, Express, Prisma ORM, PostgreSQL, Redis, Kafka

Infrastructure : Docker, AWS, Nginx