Back End DeveloperJumbo • south delhi, India

Back End Developer

Jumbo • south delhi, India

11 hours 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, India

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