Quantitative Data Quality and Backtesting Analyst

Nodex Intelligence Limted; Hong Kong; On-site; HKD 600,000 - 900,000; Full time

Job summary

Nodex Intelligence Limted in Hong Kong seeks a data professional to own data quality from feed to backtest and to run the backtests that drive ideas forward. You will collaborate with the head of research and the trading desk on data integrity and strategy validation.

We require 1–3 years of Python (pandas) and SQL experience, solid statistics, and attention to detail. Experience with market data is a strong plus, and the role involves using Claude Code and Codex for daily tasks.

Qualifications

• 1-3 years of work with data in Python (pandas) and SQL.
• Solid statistics including regression and time series.
• Attention to detail; you don't leave a number unexplained.
• Experience with market data is a strong plus.

Responsibilities

• Run daily checks on every market we trade, investigate gaps, stale price and jumps, and fix root causes.
• Compare each market against a second data source and explain mismatches with records of expected differences.
• Maintain instrument master: symbols across vendors and exchanges, splits, dividends, calendars and time zones.
• Run backtests to defined research designs, log variants, and keep the strategy library up to date.
• Compare paper and live trading results with backtest predictions and flag drift early.
• Use AI coding tools in daily work to augment data work and ensure quality.

Skills

Python pandas

SQL

Statistics

Education

Bachelor's degree in a relevant field

Tools

Claude Code

Codex

Job description

Nodex Intelligence Limted in Hong Kong seeks a data professional to own data quality from feed to backtest and to run the backtests that drive ideas forward. You will collaborate with the head of research and the trading desk on data integrity and strategy validation.

We require 1–3 years of Python (pandas) and SQL experience, solid statistics, and attention to detail. Experience with market data is a strong plus, and the role involves using Claude Code and Codex for daily tasks.