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I will backtest your trading strategy in python
taotao yu
Über diesen Service
A backtest you can't audit is just a story.
Send me your rules in plain language. I turn them into a runnable Python backtest where every number can be checked: code, full trade list, all assumptions.
I test strategies as written. No tuning until it looks profitable, no sold optimism. You get a clean test and an honest verdict.
WHAT YOU GET
Basic: the Python script, full trade list (CSV), one-page metrics: return, max drawdown, win rate, profit factor, expectancy. Costs at pessimistic rates (0.05% fee/side + 0.05% slippage).
Standard: adds data cleaning: dedup, gap log, timestamp alignment, data-quality report.
Premium: adds a written review: in/out-of-sample comparison, robustness check, weak points in plain language. Full sample in my portfolio.
HOW IT WORKS
If anything in your rules is ambiguous, I send a confirmation note before coding. Reproducible delivery: rerun the script, get the same numbers.
NOT OFFERED: return promises, live trading, account management, native Pine development (I translate Pine into Python). I never ask for your password or API keys.
Backtests do not guarantee future results. Software development and data analysis, not financial advice.
Lerne taotao yu kennen
taotao yu
Python Backtesting Specialist, Trading Strategy Validation and Data Analysis
- AusChina
- Mitglied seitNov. 2026
Sprachen
Chinesisch, Englisch
I turn written trading rules into auditable Python backtests.
Every delivery includes runnable code, the full trade-by-trade list, and all cost assumptions — nothing hidden. I test strategies exactly as written, with pessimistic fees and slippage, and report the weak points alongside the results.
Background: market-structure systematic trading, price action only, no indicators. Crypto, forex, stocks, futures, daily to 1H.
What I will never do: promise returns, ask for your password, or optimize your rules until the curve looks good. You get a clean test and an honest verdict.
FAQ
Do you need access to my trading account or API keys?
Never. I do not ask for passwords, API keys, or account access of any kind. You send written rules and, if you have it, a data file. That is all I need, and all you should ever send a freelancer.
Can you optimize my strategy until it is profitable?
No, and be suspicious of anyone who will. Tuning parameters until a backtest looks good is curve-fitting: it manufactures past performance that evaporates live. I test your rules as written. The Premium package checks whether results survive neighboring parameter values instead.
Do you write Pine Script?
The deliverable is Python. If your strategy exists as Pine Script, I translate it into a tested Python backtest as part of this gig. I do not deliver native Pine Script indicators or strategies.
Is my strategy kept private?
Yes. Your rules, data, and results are never shared or published. If a general working pattern is ever reused as an internal template, it is fully de-identified first: no instrument names, no parameters, nothing recognizable.
What if my rules are ambiguous?
I stop and send a short confirmation note listing the exact decisions needed, before coding. Work starts once the rules are pinned down. A backtest of a guessed rule is worthless, and I will not sell you one.
I am a Chinese-speaking buyer. Can we work in Chinese?
Yes, welcome. Delivery is English-led, and bilingual delivery (English deliverables plus a Chinese summary) is available on request at no extra charge.
