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Backend Engineer

Bengaluru

[About the role]

We are looking for a skilled Backend Engineer with deep fintech and payments expertise to join our core payments team. In this role, you will be at the heart of building and scaling our UPI payment infrastructure covering P2P, P2M, QR, and Autopay flows and ensuring it operates reliably at consumer scale. You will work directly with PSPs, banks, and the NPCI UPI stack, designing systems that are not just fast and fault-tolerant, but built to handle the nuances of real-world payment flows: idempotency, retries, reversals, and full transaction lifecycle management.

[Key Responsibilities]

  • Build and scale UPI payment systems (P2P, P2M, QR, Autopay etc.)
  • Integrate with PSP/banks and NPCI UPI stack
  • Design reliable transaction systems (idempotency, retries, reversals)
  • Develop low-latency, high-throughput microservices
  • Implement secure payment flows (device binding, authentication, encryption)
  • Ensure end-to-end transaction security and data protection
  • Manage transaction lifecycle, logs, and reconciliation
  • Collaborate on integrations with rewards, wallet, and checkout systems

[Required Experience]

  • 3–8+ years of backend engineering experience
  • Fintech/payments experience (mandatory)
  • Experience in high-scale consumer apps
  • Strong understanding of UPI architecture & flows
  • Experience with bank/PSP integrations
  • Solid understanding of security in fintech systems:
  • Encryption (data in transit & at rest)
  • Tokenization & secure key management
  • Authentication & authorization (OAuth/JWT)
  • Experience building scalable, fault-tolerant systems
  • Experience with wallets, ledgers, or reconciliation systems
  • Familiarity with NPCI certification processes and RBI PPI/wallet guidelines

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KRAFTON (including our affiliates) (hereinafter referred to as "Company" or "We") collects and uses personal information as outlined below for the purpose of hiring talent:

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KRAFTON (including our affiliates) (hereinafter referred to as "Company" or "We") collects and uses personal information as described below for the purpose of talent recruitment:

Purpose: Job application and result confirmation.
Categories: Collection of candidate source information.
Duration: 1 year from the date of application (Your information will only be retained to comply with relevant legal obligations).

※ Service usage records, device information, and cookies may be created and collected during the process of providing services.

You have the right to refuse consent for the collection and use of personal information. However, please note that refusing consent will not result in any disadvantage in the hiring process.

For more information, you may refer to our Privacy Policy.
 

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KRAFTON (including our affiliates) (hereinafter referred to as "Company" or "We") will collect, store, and use the information for the purpose of recruiting talent and confirming those eligible for employment protection:

Purpose: Assessing suitability for employment and awarding additional points.
Duration: 1 year from the date of application (However, if there is a legal provision, the information will be retained for the required period according to the relevant law).

※ You have the right to refuse consent for the collection and use of sensitive information. However, since this is the minimum necessary information for recruiting talent, your consent is required for job application.

For additional details, please refer to our our Privacy Policy