Senior Backend Developer

About the Role:

We're looking for a mid-level Backend Engineer to join our founding team. You'll own backend systems, APIs, and infra on AWS. You'll be solving problems across scalability, fraud detection, and real-time data processing — with huge ownership from day one.

Job Details:

• Experience: 3-5 Years
• Work Schedule: 6 days a week
• Location: On-site, South Delhi

Responsibilities:

• Design and build scalable APIs and microservices with Node.js/NestJS (serverless on AWS Lambda)
• Architect and maintain secure, high-performance backend systems
• Work with large datasets across Postgres, MongoDB, Redis, and integrate event-driven systems with Kafka
• Implement and optimize fraud detection & prevention logic to protect platform integrity
• Set up monitoring and alerting systems for reliability, performance, and security
• Collaborate with frontend (React Native, Next.js, Reanimated, Redux Toolkit, React Query) to deliver seamless experiences
• Ensure compliance with data protection and security best practices
• Participate in code reviews, testing, and documentation

Requirements:

• 2–4 years of experience in backend roles (consumer or transactional products)
• Strong expertise in Node.js/NestJS and API design (REST/GraphQL)
• Hands-on experience deploying to AWS (Lambda, RDS, S3, CloudFront, infra automation)
• Strong working knowledge of Postgres, Redis, MongoDB in production
• Experience with Kafka or similar messaging systems
• Understanding of fraud detection algorithms, real-time data processing, and system security (preferred)
• Solid grasp of data structures, algorithms, and system design
• Comfortable in a fast-paced startup with ownership of end-to-end delivery