Senior Node.js Backend Developer ( FinTech Domain)

About the Role

We are seeking an experienced Senior Node.js Backend Developer with strong expertise in Node.js, TypeScript, Microservices, API development, and cloud-native backend systems.

FinTech experience is a key requirement for this position. The ideal candidate should have hands-on experience working on Trading Platforms, Capital Markets, Stock Brokerage, Investment Banking, or FinTech products, particularly systems involving high-volume, secure, and real-time financial transactions.

Key Responsibilities

• Design, develop, and maintain scalable, secure, and high-performance backend applications using Node.js.
• Build and optimize RESTful APIs and microservices for enterprise-grade FinTech applications.
• Design and implement scalable and resilient microservices architectures.
• Develop backend systems supporting high-volume financial transactions and real-time processing.
• Optimize application performance, database queries, APIs, and backend processes for high-throughput transaction workloads.
• Implement secure authentication, authorization, and API security mechanisms.
• Develop and integrate real-time financial data and transaction services.
• Collaborate with Product, Frontend, QA, DevOps, and Architecture teams.
• Participate in architecture discussions, code reviews, and technical decision-making.
• Troubleshoot production issues and ensure high availability, reliability, and performance.
• Implement logging, monitoring, debugging, and performance-tuning practices.
• Follow secure coding, development, and deployment best practices.

Mandatory Skills & Experience

• 8-12 years of hands-on backend development experience.
• Relevant FinTech / Financial Services domain experience Key Requirement.
• Experience in Trading, Capital Markets, Stock Brokerage, Investment Banking, or FinTech products – Strongly Required.
• Strong hands-on expertise in Node.js and JavaScript.
• Strong knowledge of TypeScript.
• Proven experience building RESTful APIs and backend services.
• Strong understanding and hands-on experience with Microservices Architecture.
• Experience with Express.js or NestJS.
• Strong understanding of asynchronous programming and event-driven architecture.
• Experience with SQL and NoSQL databases such as PostgreSQL, MySQL, MongoDB, or Redis.
• Experience building systems handling high-volume / high-throughput transactions.
• Hands-on experience with Docker and containerized deployments.
• Familiarity with AWS, Azure, or GCP.
• Strong knowledge of Git and modern software development practices.
• Experience with CI/CD pipelines and DevOps workflows.
• Strong debugging, problem-solving, and analytical skills.

Preferred Skills

• Experience with low-latency financial transaction systems.
• Knowledge of real-time market data, trading workflows, or brokerage systems.
• Experience with WebSockets and real-time data streaming.
• Hands-on experience with Kafka, RabbitMQ, or similar messaging platforms.
• Experience with Kubernetes and container orchestration.
• Knowledge of GraphQL.
• Experience with financial APIs, payment systems, order management, or market data integrations.