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Back End Developer

Back End Developer

JumboSouth Delhi, Delhi, India
2 days ago
Job description

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 : 2-5 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
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    Back End Developer • South Delhi, Delhi, India

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