Manan Jain

Software Engineer

Bengaluru, Karnataka, India4 yrs 6 mos experience

Key Highlights

Expert in backend engineering and database optimization.
Led UPI architecture scaling for millions of transactions.
Proficient in multiple programming languages and cloud technologies.

Stackforce AI infers this person is a Backend-heavy Software Engineer specializing in Fintech and SaaS solutions.

Contact

Skills

Core Skills

Go (programming Language)Systems DesignBack-end Web DevelopmentSoftware Development

Other Skills

Amazon Web Services (AWS)MySQLRedisSQL ServerNestJSMicrosoft AzurePerformance TuningExpress.jsGraphQLSoftware as a Service (SaaS)Continuous Integration and Continuous Delivery (CI/CD)MicroservicesREST APIsKubernetesDocker

About

Hi, I am a software engineer experienced in building complex backend solutions and optimizing database performance. Passionate about solving business problems, and seeking to leverage my skills to develop large-scale products. Skilled in backend engineering, designing, problem-solving, and data structures. Thanks!

Experience

4 yrs 6 mos

Total Experience

1 yr 6 mos

Average Tenure

3 mos

Current Experience

Amazon

Software Development Engineer 2

Feb 2026 – Present · 3 mos · Bengaluru, Karnataka, India · On-site

Kreditbee

Senior Software Engineer

Nov 2024 – Feb 2026 · 1 yr 3 mos · Bengaluru, Karnataka, India · On-site

Architected and scaled UPI for KreditBee from 0 to 1, evolving into the Subject Matter Expert (SME) for the entire core UPI backend. Led the end-to-end development of mission-critical modules, scaling the platform to support a peak of 2.25 million monthly debit transactions and 860k+ monthly user registrations.
Key Impact:
Managed full-lifecycle development for Payments, Mandates, UPI Lite, Onboarding, UDIR, and Rewards.
Orchestrated the 100% rollout of UPI services by October 2025, handling a rapid growth trajectory from 1k to 2.2M+ monthly transactions.
Utilized AI tools (ClaudeCode, RooCode) to help with designing, generating and debugging almost all code flows.
Achieved 89% test coverage (600+ tests) in couple of days before launching.
Refactored dependency injection to a container-based approach, enabling 100% end-to-end mocking and improved testability.
Implemented anti-spoofing checks (app tampering, root detection) and OpenTelemetry-based tracing for full request visibility.
Acted as primary liaison with UPI vendors to decode core flows, reducing integration time by 50%.

Go (Programming Language)Amazon Web Services (AWS)MySQLSystems DesignRedis

Cognizant servian

Software Engineer

Oct 2022 – Sep 2024 · 1 yr 11 mos · Bengaluru, Karnataka, India · Hybrid

Worked on a cloud-native product that acts as a middleware for transferring files between enterprises supporting various systems and providing self-service capabilities to consumers as well.

SQL ServerBack-End Web DevelopmentNestJSMicrosoft AzurePerformance TuningExpress.js+15

Coles group

Software Engineer (Consulting for Servian)

Oct 2022 – Sep 2024 · 1 yr 11 mos · Bengaluru, Karnataka, India · Remote

Worked on a cloud-native product that acts as a middleware for transferring files between enterprises supporting various systems and providing self-service capabilities to consumers as well.

SQL ServerBack-End Web DevelopmentNestJSMicrosoft AzurePerformance TuningExpress.js+15