Headline

Software Engineer @ FreechargeBiz | Designing Scalable Backend Systems | LLD | HLD | Node.js, React.js, Express.js, JavaScript, TypeScript, MongoDB, PostgreSQL, Redis, Kafka

About

Backend Engineer with 3+ years of experience building scalable, high-performance systems in fintech domain. I specialize in designing data-intensive platforms where reliability, performance, and security are critical. Currently working as a Software Developer - Backend at Freecharge, contributing to financial products at scale—including Control center and Rekyc, risk-based workflows, secure document handling, and internal back-office systems. I’ve worked extensively on Node.js, NestJS, TypeScript, MongoDB, SQL databases, Redis, Kafka, and cloud-based architectures. I’ve led and owned backend modules end-to-end: • Built fintech systems handling credit detail updates, ReKYC document verify, and transactional consistency • Optimized slow database queries using indexing, query refactoring, and caching (Redis), improving performance by up to 25% • Designed enterprise-grade architectures with RBAC, locking, and transactional safety I enjoy working close to the business, translating real-world problems into clean, maintainable, and scalable backend solutions. I’m particularly interested in roles involving fintech, wealth-tech, distributed systems, and backend-heavy products. 🚀 Actively exploring Backend / SDE-2 opportunities where I can work on high-impact systems, solve complex engineering problems, and grow alongside strong technical teams. Tech Stack: Node.js | NestJS | TypeScript | MongoDB | PostgreSQL | MySQL | Redis | Kafka | AWS | Docker | Microservices | REST APIs | System Design

Location

India

AI stack

codex

cursor

Work experience

Software Engineer at FreechargeBiz, Jan 2026 - Present · 8 mos, Mumbai, Maharashtra, India

Software Developer at Freecharge, May 2024 - Dec 2025 · 1 yr 8 mos, Mumbai, Maharashtra, India, Member of the backend development team for the Axis Bank Safety Center product, a critical security and compliance platform. Responsible for designing, implementing, and maintaining scalable backend systems, authentication flows, and end-to-end API solutions in a high-performance fintech environment. Key Achievements & Responsibilities: Designed and deployed secure, scalable APIs with Node.js, Express.js, and MongoDB, improving request handling efficiency and system resilience. Built and integrated OTP-based authentication and SSO flows, strengthening customer onboarding and account security. Contributed to new feature development in the Axis Bank Safety Center product, directly enhancing fraud prevention and compliance monitoring. Migrated services to TypeScript and leveraged AWS S3 for scalable file storage, improving maintainability and cloud adoption. Authored clear and comprehensive API contracts and documentation (Postman), enabling smoother collaboration with frontend and product teams. Delivered end-to-end backend routes for specialized requests, reducing turnaround time for critical business operations. Actively collaborated with cross-functional teams (Product, QA, DevOps) in an Agile/Scrum setup, ensuring on-time delivery of releases. Utilized a tech stack including Node.js, Express.js, MongoDB, Mongoose, Redis, AWS (S3), TypeScript, GitHub, Bitbucket, and Jira.

Graduate Engineering Trainee at Freecharge, Jul 2023 - May 2024 · 11 mos, India

Education

Bachelor of Technology - BTech, Electrical, Electronics and Communications Engineering, Maulana Azad National Institute of Technology

Public links

github: https://github.com/DSNdaniyaal