FinTech Stack Developer (Node.js / Python / React)

About the Role Join a modern FinTech ecosystem as a Full-Stack Developer. You'll build scalable lending solutions using React.js, Node.js (NestJS), and Python microservices, handling real-time transactions and financial calculations with precision.

Responsibilities

• Develop end-to-end features from React-based loan interfaces to Node.js backend disbursement logic
• Build and maintain Python-based microservices that interface with machine learning models for borrower risk evaluation
• Implement JWT and mTLS for secure communication between lending apps and third-party banking APIs (Plaid, Stripe)
• Write complex, performant SQL queries and migrations ensuring 100% financial accuracy
• Prevent regressions through Test-Driven Development practices

Requirements

• Proficiency in React.js with TypeScript and Tailwind CSS
• Experience with Node.js and NestJS framework
• Comfortable switching between TypeScript and Python
• Experience building scalable APIs handling high concurrency
• Strong understanding of security: SQL injection prevention, XSS protection, AES-256 encryption
• Commitment to Test-Driven Development
• Fluent in English

Bonus Skills

• Event-driven architecture (Kafka, RabbitMQ)
• Blockchain or smart contract experience
• Docker and Kubernetes proficiency

Interview Preview Expect a practical challenge: build a mini-amortisation engine that calculates monthly payments with fluctuating interest rates and handles leap year interest accrual edge cases.

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