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Sarthak UserSU
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Sarthak User

@sarthakuser12

I build secure, scalable backend and identity platforms with measurable reliability gains.

India
Message

At Eventbrite, I build identity platform capabilities supporting 3M+ logins each month. I led a legacy authentication migration to Auth0, enabling adaptive MFA for risky logins and contributing to a 70% reduction in fraud vectors.

I re-platformed token caching to AWS ElastiCache, migrating millions of active sessions with zero downtime and achieving 100% session persistence. I also designed scalable permission partitioning for Lambda authorizers serving 60+ BFF services.

Previously at NuvertOS, I led 0→1 development of an Order Management Module and built Node.js and Express APIs for settlement workflows, reducing manual effort by 70%. I improved API performance by 40% by resolving MySQL N+1 query issues.

At DLT Labs, I built file-ingestion microservices with RabbitMQ and asynchronous SFTP pipelines, while contributing to carrier configuration, job scheduling, and Angular-based workflow interfaces. I bring hands-on experience across cloud infrastructure, microservices, testing, and high-throughput operational systems.

Experience

Work history, roles, and key accomplishments

Eventbrite logoEV
Current

Software Engineer II

Jul 2024 - Present (2 years 2 months)

Led migration of legacy auth to Auth0 for 3M+ logins/month, implementing redirect strategies and post-login actions that enabled adaptive MFA on risky logins and contributed to 70% reduction in fraud vectors. Re-platformed token cache from shared Memcached to AWS ElastiCache using dual-write and feature-flagged reads, migrating millions of active sessions with 0 downtime and achieving 100% session

NU

Software Engineer

NuvertOS

Jul 2023 - Jun 2024 (11 months)

Led 0→1 development of the Order Management Module, implementing cart functionality using the observer pattern in Angular for real-time state synchronization and improved user experience. Architected and built REST APIs for the Settlement Module using Node.js and Express, replacing manual invoice and payment entry with a scalable, system-integrated workflow, reducing manual effort by 70%.

DL

Software Engineer

DLT Labs

Aug 2021 - Jun 2023 (1 year 10 months)

Built a microservice for file ingestion and processing, leveraging RabbitMQ for event-driven communication to reliably stream data between services using SFTP and asynchronous pipelines. Contributed to microservices for carrier configuration and job scheduling, enhancing workflow automation.

Education

Degrees, certifications, and relevant coursework

Ajay Kumar Garg Engineering College logoAC

Ajay Kumar Garg Engineering College

B.Tech, Computer Science

2017 - 2021

Grade: 7.91

Pursued a B.Tech in Computer Science from Ajay Kumar Garg Engineering College, graduating in 2021 with a CGPA of 7.91.

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