Experience

Software Engineer, TikTok

Worked on in-app purchase (IAP) solutions across TikTok LIVE and other business lines, handling 3M+ daily transactions and 1K peak QPS across a 15 - microservice module
Own Apple and Google payment integrations, handling server-to-server callbacks, idempotent event propagation, and periodic polling for payment recovery
Worked on real-time reconciliation system from 0 to 1 using DB binlogs to detect fund discrepancies, logic errors, and invalid channel behaviour
Revamped core services, reducing business-line onboarding from 3 person-days of code changes to 15 minutes of configuration

kubernetes

apache

grpc

redis

rocketmq

kafka

clickhouse

Accelerated development cycles by refactoring and modularizing code to eliminate geolocation-specific dependencies, achieving a 10% reduction in development time and enhancing deployment efficiency across new data centers.
Performed an migration of a core database to a sharded architecture, enabling future expansion to handle up to 30TB of data with minimal downtime and ensured stability by coordinating closely with dependent services.
Developed internal documentation that reduced onboarding time and improved cross-team collaboration, facilitating smoother upstream and downstream integration with our services.

kubernetes

apache

grpc

redis

Worked on the migration to a microservices-based backend, optimizing the system’s scalability and enabling expansion to serve a larger traffic volume.
Collaborated on optimizing SQL queries and implementing Redis caching, resulting in faster data retrieval and reduced load times by over 15%.
Integrated JWT-based authentication into existing APIs, contributing to enhanced user data protection.

python

typescript

django

express

redis

Taught classes for Data Structures and Algorithms and Operating Systems.
Guided students to reason about the design of algorithms, and offer feedback on system level code.
Offer assistance to academic faculty in developing course materials throughout the semester.

python

java