m
marlondoo

Marlon Doo

@marlondoo

FullStack Developer, Quant Finance, Web3

China
Chinese, English
About me
Full-stack developer with 5 years at China's top tech companies (Tencent, NetEase, JD.com, SenseTime) and a quantitative finance background — I build software that handles real money. What I deliver: • Trading bots & backtesting systems (Python, crypto/stocks) • Web3 dApps & smart contracts (Solidity, ethers.js) • Fintech dashboards & full websites (React, Next.js, Go, Node) Clean, documented code. Honest scoping before you order. Fast replies (usually within a few hours). Tell me about your project!... Read more

Skills

m
marlondoo
Marlon Doo
Offline • 
Average response time: 1 hour

See my services

Full Stack Web Applications
I will build a fullstack web app with python go react as extencent netease engineer
From$200 / projectMore details
Trading Bots Development
I will code your tradingview strategy or indicator in pine script
From$40 / projectMore details

Work experience

Binance_Smart Chain

Quantitative Trading Systems Engineer

Binance Smart Chain • Full-time

Jul 2024 - Present • 2 yrs

Built the full pipeline of a crypto quantitative trading system: market data collection, backtesting, replay validation, live execution, and fund monitoring with reconciliation. Developed the research framework and factor-analysis tools covering 20+ strategy signals, 100+ trading pairs and 5 live accounts. Also built on-chain asset management features on Arbitrum (token mint/redeem, NAV calculation, fund transfers) for a live product managing tens of millions of USD.

Tencent_Holdings

Senior QA Development Engineer

Tencent Holdings • Full-time

Jan 2024 - Jul 2024 • 6 mos

Designed and executed pre-launch load testing for Marvel Rivals, targeting peak traffic of 100,000+ concurrent online matches. Built a Python-based load-testing framework with task orchestration, simulated player behaviors and metrics collection — 10,000+ concurrent requests per machine — and cut the load-testing cycle by over 60%.

System Development Engineer

Sense • Full-time

Aug 2022 - Jan 2024 • 1 yr 5 mos

Developed autonomous-driving middleware shipped in 3 mass-production vehicle programs. Optimized network transport and data pipelines to run reliably on resource-constrained automotive chips, and owned system-level delivery: performance tuning, memory-leak analysis and production troubleshooting.