Senior Backend Engineer Technical - Can resolved emergency issue within one day at the first month of employment. Rapid familiarity with domain knowledge, program architecture, DB schema empowers me to devise concise solutions and find the root cause. - Optimized cross system data synchronization. Development Process Reduced the complaint rate caused by system data synchronization issues by 75%. Reduced the number of bugs caused by system data synchronization issues by 81%. Reduced the time spent by RD on addressing cross system data synchronization issues by 89%. - Changed Redmine and excel to JIRA. - In response to the merger of three product teams, implement refinement, planning, retro meeting to share knowledge, architecture, coding style, coding rule. Leadership - Mentored 4 RD - Instructing mentees skills about TDD such as OOP, unit test, refactor.

Directly lead 4 PG 1 QA 1 PM Technical Cache framework with AOP(supported Redis/memory cache). Planning the rewriting of the legacy product. Introduced ATDD, BDD, TDD with shift-left testing into the development cycle. Breakdown the requirement and assign tasks to the team member. Enhanced the development process such as the automation on Azure DevOps, set up CI/CD pipelines of the internal projects. Cross departmental communication. Optimized performance Development experience Designed Azure DevOps Services issue process. Azure DevOps Services webhook for changing issue status automatically. Leadership Mentored 4 PG. Code review with the team member and also give them some advises of their personal issues or technical issues. Built up the in-house knowledge base system to help the newcomer adapt the new working environment. Helped other engineers to solve their issues. Assisted other engineers to realize their worth and promoted them to improve themselves. Helped team members to set their quarterly goal and audit their achievement regularly. Reduced the bug rate of development to below 1% (2021 average). Reduced the rate of reworking to below 2% (2021 average). Increased PGs development efficiency over 300% (compare 2021 Q4 with 2021 Q1) Exceeded team target goal by 20%.

Backend engineer. - Developed, maintained and refactored p2p CMS. - Seperated front-end and back-end. - Used unit test to reduce the bug rate. - Called Fintech Api. e.g. Reward Payment, TWID, KGI Commercial Bank, Green World Fintech Service. - Used WebSocket to notice immediately. - Deployed on Azure.

Led the development of "Central sercurity system". - Developed winform for local client - Hardware communication - Database - Developed Api Server - Used firebase to broadcast the message to "central client", "local client", "mobile client". - Gave Api for "mobile client", "central client".