Livin AI

Work Experience

Featured Projects

Metro CoPilot

Mar, 2024 - Aug, 2024

Technical Lead

The Metro Rail Transit Inquiry System is primarily aimed at providing passengers with travel-related information inquiries and advertising services. In response to the implementation of the central state-owned enterprise information technology application innovation development strategy, the core goal of this project is to replace Xi'an Metro's existing inquiry system with a fully domestic system capability.

→ Challenges

• Product and business level: Align with existing system capabilities and redevelop (the original system capabilities do not support domestic software and hardware facilities); provide domestic facilities (including software and hardware) selection solutions for business parties;
• Technical level: Mixed B/S and C/S architecture, where the management system is B/S architecture, and the inquiry machine client is C/S architecture, but the company currently has no client software engineers;
• Organizational level: The current technical team lacks complete experience in domestic application development and deployment.

→ Targets

• Achieve the domestic replacement of the existing 'Metro Rail Transit Inquiry System', deploy system capabilities on domestic servers and operating systems, and provide 7x24 hours of stable service.

→ Actions

• Organize first - Recruit key technical talents with experience in domestic application development and deployment;
• Dive deep into the business - Organize technical personnel to go to the subway station to deeply use the existing system capabilities;
• Hardware first, then software - Complete the selection of domestic facilities first, then proceed with software application design; determining hardware first can reduce the compatibility cost of software development;
• Pre-research technical difficulties - Familiarize with potential technical difficulties and bottlenecks in advance (such as interactive subway route maps, offline applications, etc.).

→ Results

• Organizational aspect: Established a stable and combat-ready project team;
• Product aspect: By June 2024, 75% of the management system's functionalities have been developed, and the client software has completed 90% of its functionalities;
• Technical accumulation: An SVG-based interactive subway network route map component (planned to be open-sourced).

Waima WeChat Mini Program

Jul, 2022 - Nov, 2023

R&D Manager

The WeChat Mini Program supports the online marketing and operation of Meituan's self-operated Waima business. Developed based on Meituan's self-developed multi-end framework for Mini Programs, the product features 6 core pages: 'Home', 'Product Details', 'Product Details Page', 'Shopping Cart', 'Personal Center', and 'Search Page', as well as 3 major permanent marketing pages: 'Limited Time Sale', 'Waima Selection', and 'Member Center'.

→ Challenges

• 90% of team members lack experience in consumer-facing (C-end) projects and have insufficient expertise in developing mini-programs, resulting in low development efficiency and poor code quality.
• There is a high-risk technical debt, such as the absence of a Single Source Of Truth (SSOT), leading to occasional user location discrepancies.
• Code organization is haphazard, lacking awareness of ‘DRY’ (Don’t Repeat Yourself) and componentization principles, resulting in high code redundancy and low maintainability. The code quality metric ‘defects per thousand lines of code’ stands at 0.22‰, falling short of the baseline requirement (0.2‰) set by Meituan Daojia R&D department.
• Most critical performance indicators, such as ‘time to first byte,’ for core pages do not meet the baseline requirements set by Meituan Daojia R&D department. Negative feedback from both business stakeholders and users is prevalent.

→ Targets

• Enhance team members’ awareness of consumer-facing (C-end) project development principles, emphasizing ‘high stability, high performance, and excellent user experience.’
• In the ‘preparation’ phase, align with unified operational requirements for terminal quality and effectiveness. Strengthen the implementation of standards, mechanisms, best practices, negative cases, and technical debt management. In the ‘execution’ phase, optimize alert monitoring capabilities for core iterative processes to enhance business availability. In the ‘post-execution’ phase, conduct categorized retrospective analyses.
• Achieve industry-leading performance experiences for critical pages, benchmarking against external competitors like ‘Jiu Xiao er’ and internally aligning with role model applications such as ‘Grocery Shopping Mini-Program.’

→ Actions

• Improving Thinking - Organizing professional sharing sessions for cross-company and cross-team mini-program development; Clearly defining performance experience requirements for the pages or modules responsible in OKRs; Deep diving into the business by organizing customer service listening, frontline operations, and competitor analysis;
• Improving Quality - By conducting online issue analysis and research process standardization analysis, a 'Waima Terminal Development Delivery Full Process Work Guide' has been established to ensure that each development process has clear guidelines; Responding to and implementing the 'Stability Panoramic Governance and Operations' from higher-level departments, including 'Waima Core Link Quality Assurance', 'Waima Empowerment Quality Assurance', and 'Technical Debt Summary Governance', as well as building the Waima mini-program component library and establishing a cross-functional technical solution review mechanism;
• Improving Performance - Enhancing the measurement capabilities and operational mechanisms for performance experience, adding 'Instant Opening Rate' to align with Meituan WeChat Mini-Program operational standards, and adding 'Real Device Page Opening Time' to benchmark performance against external competitors; Establishing the 'Instant Opening Rate Governance Special Project', 'Homepage Performance Governance Special Project', and 'Wine Product Page Performance Experience Optimization Special Project', and initiating instant opening rate governance for 9 core pages.

→ Results

• Organized 1 cross-company professional sharing session 'Meituan Waima X JD Shopping Mini Program Exchange Meeting' in collaboration with JD; Established communication groups with frontend teams from other business lines such as 'Mai cai', 'Waimai', and 'Tuan Hao Huo', and organized several sharing sessions;
• Reduced the defect rate of Waima Mini Program to below 0.18‰, surpassing the baseline requirement set by Meituan Daojia R&D department;
• Overall instant opening rate improved from 46% in 2022 to 71%: Except for the shopping cart page and order preview page, the instant opening rate of other pages has achieved alignment with the internal benchmark 'Mai Cai' Mini Program; For core transaction pages, except for the shopping cart page, the real device page opening time has surpassed the benchmark of competing 'Jiu Xiao Er' Mini Program.

Management Skills

• Mar 6, 2024

  Leadership Principles of Amazon and Meituan

  The Amazon Leadership Principles define how Amazon conducts business, leads, and makes decisions. It is a cultural system that ensures the healthy operation and success of the entire company, and is worth learning and emulating for every company and individual.

• Aug 10, 2024

  Automating Releases with Semantic-Release and GitHub Actions

  This article explains how to automate releases using Semantic-Release and GitHub Actions. It covers installing necessary packages, creating a personal access token, configuring release files and GitHub workflows, and testing and triggering the release process.

• Aug 5, 2024

  A more intuitive understanding of Docker

  A more intuitive understanding of Docker

Technology Influence

• 2023-05-01 - Meituan：Organized and reviewed Meituan Flash Purchase Technology Department's 2023 "Shining Technology Training" supply chain domain courses.
• 2018-03-01 - JD.com：Explored Aotu Lab's technology monetization, planned Aotu Books (books.aotu.io), and published JD.com's first paid Juejin booklet "Enterprise H5 Development Practical Manual" on Juejin platform.
• 2017-01-01 - JD.com：Open-sourced AT-UI Vue.js UI framework (github.com/AT-UI/at-ui), 2.2K Stars, now integrated into Taro-UI project.；Open-sourced ELF HTML5 build tool (elf.aotu.io), 466 Stars.；Open-sourced Gitalk comment component based on Github Issues (gitalk.github.io), 6K+ Stars.
• 2016-09-01 - JD.com：Hosted Aotu Geek Salon (geeks.aotu.io), spreading technical influence within the industry.
• 2015-09-24 - JD.com：Created JD.com's `Aotu Lab` technology brand (aotu.io), building a brand operation ecosystem including official website, WeChat public account, Github organization, Juejin account, Aotu public courses, and Taro project.