Technical Lead

About KoinBX

KoinBX is one of the leading FIU-registered centralized cryptocurrency exchange founded in India, operating successfully for over six years. We’ve grown steadily with a clear vision: to make crypto trading secure, simple, and accessible to users around the world.

Our platform supports a wide range of digital assets and is known for its strong security framework, intuitive user experience, and commitment to transparency. With a growing global user base, KoinBX is building a trusted ecosystem where traders and investors can confidently engage with the future of finance.

As we continue to lead the charge in the Web3 revolution, we’d love to have you on board! Join our team of passionate innovators who are pushing boundaries and shaping the future of Web3. Together, we’ll simplify the complex, unlock the inaccessible, and turn the impossible into reality.

Inside KoinBX’s Engineering Team

Our Engineering team is the backbone of KoinBX's cutting-edge products and platforms. We take on complex challenges to develop scalable, secure, and high-performance solutions that drive the future of digital finance. If you're an engineer passionate about innovation and solving real-world problems, come be a part of the team shaping the future of Web3 technology.

You’ll be diving into these tasks:

• Architecture Ownership: Design and maintain scalable and secure backend and database architecture for the exchange.
• Database Engineering: Model complex relational and NoSQL data structures (MySQL/MSSQL, MongoDB), optimize queries, and ensure data consistency and performance under heavy load.
• Blockchain Integration: Build, maintain, and improve APIs/scripts for handling deposits, withdrawals, and transaction tracking for BTC, ETH, TRON, BNB, and other networks.
• API Design: Develop and review RESTful APIs for frontend/mobile and third-party integrations.
• System Performance: Analyze bottlenecks and optimize backend performance across all modules (trade engine, wallet, KYC, user management).
• Solution Design: Translate business problems into technical solutions and own the end-to-end implementation plan.
• Code Review & Dev Guidance: Provide direction and support to backend developers; perform technical reviews to maintain code quality and best practices.
• Security & Compliance: Ensure solutions are secure, adhere to industry compliance (CERT-In, ISO, etc.), and protect user data and assets.
• Documentation: Maintain architectural and operational documentation.

Bring these HODL-worthy skills to the table:

• Strong backend development experience in Node.js / NestJS / .NET / C#
• Solid knowledge of MySQL / MSSQL / MongoDB, indexing, triggers, stored procedures, and optimization
• Experience integrating with blockchain nodes (e.g., Web3.js, Nethereum, TronWeb) for ERC20/TRC20/BEP20 token operations
• Understanding of asynchronous processing, microservices, and event-driven architecture (Kafka preferred)
• Deep understanding of REST APIs, authentication flows, and secure key management
• Experience with Azure infrastructure
• Exposure to frontend decisions, including Next.js / React-based web applications as well as Native Android and iOS applications, with the ability to guide integration and architectural consistency across platforms.

You could be a key element our team needs:

• Strong backend development experience in Node.js / NestJS / .NET / C#
• Solid knowledge of MySQL / MSSQL / MongoDB, indexing, triggers, stored procedures, and optimization
• Experience integrating with blockchain nodes (e.g., Web3.js, Nethereum, TronWeb) for ERC20/TRC20/BEP20 token operations
• Understanding of asynchronous processing, microservices, and event-driven architecture (Kafka preferred)
• Deep understanding of REST APIs, authentication flows, and secure key management
• Experience with Azure infrastructure
• Exposure to frontend decisions, including Next.js / React-based web applications as well as Native Android and iOS applications, with the ability to guide integration and architectural consistency across platforms.

Why Join KoinBX?

• Contribute to the evolution of the cryptocurrency industry.
• Develop customer-facing technology products for global users.
• Work in a performance-driven environment that values ownership and innovation.
• Gain exposure to cutting-edge technologies with a steep learning curve.
• Experience a meritocratic, transparent, and open work culture free from politics.
• High visibility in the global Blockchain ecosystem.

Perks & Benefits at KoinBX

• Exciting and challenging work environment.
• Opportunity to work with highly skilled professionals.
• Team events and celebrations.
• A dynamic and growth-oriented career path. Join us and be a part of the revolution in the cryptocurrency industry!