* Reduced the error rate of the newly launched API from 0.03% to 0.001% to meet the SLA by tuning the performance by analyzing the system metrics and adjusting k8s resources. * Enhanced system stability and fault tolerance and optimized DB performance by designing a robust DB read/write separation and identifying and addressing data inconsistency patterns to prevent issues at code and business flow levels. * Expanded subscription services in the EU market to grow the annual revenue by leading testing, developing features to comply with local legal requirements, and serving as the lead engineer to ensure successful launch implementation. * Saved the legal compliance costs by leading the development of new features, which allowed change benefits without impacting existing users or violating legal regulations. * Demonstrated leadership by mentoring junior engineers in coding architecture, test automation, code review, and performance tuning. * Participate in the backend committee—host and have presentations in the knowledge-sharing meetings.

Increased concurrency to meet the business’s requirements by leading the team in building a cybersecurity platform, which can dynamically scale up by the number of tasks and be flexible to add new security tools.

* Facilitated seamless communication across several web/app products by implementing JWT (OIDC flow) and replacing the outdated SAML flow by guiding junior engineers in creating an authentication service. * Improved service stability by reducing the number of system crashes to 0 by: * identifying and addressing system defects like memory leaks and high CPU usage. * fixing cache cluster sync delays. * Document all issues and share insights with the team. * Raised sign-up/sign-in conversion through collaborative efforts with stakeholders and mentoring junior engineers to simplify authentication flow to enhance user experience. * Improved release quality by: * adding static analysis and API automated testing to the CI/CD to increase unit test coverage and remove major code smell issues. * Implemented infrastructure as Code (IaC) to reduce the deployment time from hours to minutes.

Boosted engineer’s productivity by bringing deployment time from hours to mins by designing and building the whole new auto-deployment workflow from scratch to replace manual deployment.

* Enhanced IP team’s performance to generate patent analysis reports by developing and maintaining ETL system to provide well-structured patent data from a variety of source data. * Designed and implemented a mechanism to sync Oracle databases cluster between three regions.