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WANG XIN
Senior Go Engineer · AdTech · AI Engineering
📧 278810732@qq.com 📱 183****2115 🔗 github.com/xwi88 🌐 blog.xwi88.com
11+
Years R&D
9
Years Go
100K+
QPS Handled
<60ms
P99 Latency
<2ms
Model Inference
50%+
Cost Saved
Core Strengths
AdTech
5 yrs in AdTech. At InMobi led the delivery engine (retrieval → ranking → bidding → delivery); owned frequency capping, budgeting, callback/attribution integration, core components and performance tuning. At Zhaolan built DSP/DMP. Deep expertise across the full RTB bidding and oCPX bid pipeline.
Performance & Algorithms
Ad engine handling 100K+ QPS; optimized P99 to 60ms, cut compute 50–60%+ and storage 40%+. Deployed FM/FFM via TensorFlow at <2ms per inference; built A/B experimentation and monitoring
Agentic Engineering
Since early 2026, built Agentic Engineering workflows with Claude Code + multi-model collaboration covering coding → testing → review → PR, with auto Jira task creation and task-driven code analysis (each step human-confirmed). From Vibe Coding to Agentic Engineering — AI accelerates delivery while architecture, business judgment and quality stay human-led. Master the tools, don’t be mastered by them
Cross-domain Engineering
AdTech engines, blockchain core (uni-chain / contracts / DEX), and financial compliance (KYC/AML). Built Go microservice stacks with Docker + Consul + Prometheus/Grafana
Tech Stack
Languages
Go · Java · Python · JavaScript · Bash
Architecture
Gin · gRPC · Protobuf · Spring Boot · React
Databases
MySQL · PostgreSQL · Redis · Elasticsearch · ClickHouse
Messaging
Apache Kafka · Redis Stream
AI & Tools
GLM · Claude · GPT · Claude Code
AdTech
OpenRTB · RTB · CTR/CVR · oCPX · Freq Cap · Budget · Attribution
Infrastructure
Docker · Consul · etcd · Prometheus · Grafana · ELK · Jaeger
Other
TensorFlow · protobuf · Linux
Work Experience
A FinTech Compliance Company
Java Backend Engineer · Shenzhen
2025.12 – Present
Provides global clients with KYC/AML digital compliance covering the full customer due-diligence lifecycle.
  • Core backend development for OB-BE (identity verification, liveness detection, corporate compliance applications — COD/EOD)
  • Integrated 10+ third-party services (Regula OCR, face-recognition SDK, Kyckr, Dow Jones, CRIF, ScoreChain); triaged and fixed 50+ integration defects
  • Contributed to the compliance engine (risk scoring, policy configuration, automated review); built Agentic Engineering workflows to boost cross-stack delivery
Independent Developer
Full-stack Development
2024.02 – 2025.11
Freelance technical project development and delivery.
  • Took on Go/Java backend and full-stack projects; helped clients solve various engineering problems
InMobi
Senior Golang Engineer · Demand Team · Beijing
2020.01 – 2024.01
A leading global mobile AdTech platform operating across APAC, North America, Europe and beyond.
  • Ad Delivery Engine: led core modules (request handling, retrieval, ranking, bidding, delivery, frequency capping, budgeting, callbacks); production load 100K+ QPS
  • Performance: cut P99 from 80–100ms to 10–60ms (connection/memory pools, lock optimization, GC tuning); reduced compute 50–60%+ and storage 40%+
  • Model Inference:Deployed FM/FFM (CTR/CVR prediction) via TensorFlow for online inference + batch estimation at <2ms each; built the A/B experimentation framework
  • Infrastructure: Go microservice stack (Consul + Docker + ELK + Prometheus/Grafana); ran code reviews and tech-sharing sessions
Haoche Kuku (Used-Car Platform)
Senior Engineer · Algorithms - Valuation · Beijing
2018.09 – 2020.01
  • Multi-strategy valuation service supporting market-price, residual-value and historical-transaction pricing models; built a simulation/replay system (with web UI) from scratch for model backtesting
  • Go + Docker two-stage builds, Consul service discovery, ELK logging, Kafka + Druid data pipeline
Zhongsiboan Technology
Software Engineer · Beijing
2016.08 – 2018.09
Focused on an in-house blockchain core platform, smart-contract engine and decentralized apps.
  • uni-chain core platform: developed core node services (initial Python + Go rewrite), hybrid storage (KV + relational), consensus (PBFT/POW), cluster deployment & monitoring
  • uni-contract smart-contract platform: led architecture; Go backend + Python contract compile/parse toolchain; supported multi-language contract authoring & deployment with lifecycle-management APIs
  • Decentralized Exchange: early contributor to trading modules (matching engine, on-chain asset swap)
  • R&D infrastructure: built GitLab + Docker dev platform from scratch, CI/CD pipelines, drove team code standards
BFSU Online
Software Engineer · Beijing
2015.06 – 2016.04
  • Online-education platform modules; optimized attachment storage and exam-paper entry
Beijing Zhaolan Information Technology
Software Engineer · Beijing
2014.11 – 2015.05
  • DSP (ad requests, bidding, traffic allocation) and DMP (profiling, tagging, segmentation)
Education
North China Electric Power University (College of Science & Technology)
Software Engineering · B.Eng. · 2009.09 – 2013.07
WANG XIN · 2026 [ Print ]