陈国强 ☕️
陈国强 Chen Guoqiang

Back-End & Blockchain Developer

Hello there! I am Chen Guoqiang (Robin Chen) – a former Backend Software Engineer at Tencent, with degrees in Software Engineering from Peking University and Xi’an Jiaotong University.

I recently completed my GAP year (Sep 2024 – Aug 2025), during which I travelled globally, improved language skills, and refocused career toward blockchain technology.

I am trilingual and can work in Chinese (native), English (PKU Exemption Granted、IELTS-A 6.5), and Japanese (JLPT N2). In addition, my academic background qualifies me for work in 🇬🇧 the UK, 🇯🇵 Japan, and 🇭🇰 Hong Kong without visa sponsorship for at least two years.

English Résumé

Experience

  1. International Career Preparation

    Career Break

    Results Included:

    1. Independent World Travel (Sep 2024 – Feb 2025):
      • 🇬🇧 UK & 🇮🇪 Ireland (Sep–Oct)
      • 🇭🇰 Hong Kong & 🇻🇳 Vietnam (Nov)
      • 🇯🇵 Japan (Dec–Feb)
    2. Blockchain Re-engagement & Language Learning (Mar 2025 – Aug 2025):
      • Blockchain: Reoriented career focus toward blockchain.
      • English: Scored 6.5 overall in IELTS
      • Japanese: Passed JLPT N2 (business level)

  2. Back-End Software Engineer

    Tencent

    Role Included:

    • Developed and maintained backend systems for QQ, a high-concurrency instant messaging (IM) platform, with some services scaling to 78K+ QPS and over 2.2B daily access.
    • Support end-to-end lifecycle management for 3.5B+ QQ accounts, including registration, revocation, recycling, and cross-platform login integration.
    • Owned refactoring of QQ’s legacy core modules, improving system reliability and availability.

Education

  1. MEng Software Engineering

    Peking University
    • GPA: 3.25/4, Top 25%
    • Conducted research on oracle mechanisms for the Peking University Bdware Blockchain platform.
    • Developed and implemented smart contracts and decentralized applications on the platform.
    Read Thesis Abstruct

  2. BEng Software Engineering

    Xi'an Jiaotong University

    Courses Included:

    • Operating System(89/100)
    • Computer Organization and Architectures(91/100)
    • Mathematical Modeling(89/100)
Projects
QQ Accounts
QQ Basic Infrastructure ∙ Golang/C++ ∙ 2024
  • Developed and maintained core account services for 3.5B+ QQ users, including registration, revocation, and recycling.
  • Refactored legacy C++ modules (20+ years old) to adapt cloud based services.
  • Redesigned legacy modules to improve reliability and maintainability, which is still running today.
Related Link
QQ Face Recognition
QQ Basic Infrastructure ∙ Golang ∙ 2024
  • Built and optimized Golang-based backend for QQ’s facial recognition service, supporting user profile security and device login verification.
  • Integrated deep learning model APIs and improved response latency by 40% through concurrent image preprocessing and caching.
  • Collaborated with QQ security team to detect and prevent face spoofing attacks, improving system resilience against black and grey market abuse.
Related Link
QQ Channel
QQ Community Platform ∙ Golang ∙ 2022
  • Participated in backend development of QQ Channel (community & feeds platform), powering personalized content, identity display, and access permissions for 50M+ users.
  • Supported 78K peak QPS and 2.2B daily requests with high availability, implementing fine-grained caching and horizontally scalable architecture.
  • Optimized push notification service with dynamic throttling to reduce system load during peak hours.
Related Link
Oracle Mechanism for Bdware Blockchain Platform
Peking University ∙ Java/Solidity ∙ 2021
  • Designed and implemented an off-chain oracle mechanism to bridge real-world data into Bdware’s blockchain platform.
  • Developed data validation and signature aggregation logic for oracle nodes, ensuring data consistency on-chain.
  • Delivered a demo prototype with smart contract interface and mock price feed integration.
Related Link
Language Level
100%
Chinese(Native)
72%
English(CEFR B2)
50%
Japanese(CEFR B1)