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# Quantitative Strategy Developer

- **Company:** Arc Full-time
- **Location:** United States (Remote available)
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Reference Implementation, C Sharp (Programming Language), Python (Programming Language), Pandas, Restful APIs
- **Published:** August 5, 2026
- **Apply:** https://arc.dev/signup?userType=developer&publicRandomKey=p85gjg24ve&to=https%3A%2F%2Farc.dev%2Fdashboard%2Fd%2Fverified-jobs%2Fp85gjg24ve%2Fapplication

## About the Role

* Proven experience in building and testing systematic trading strategies, particularly in futures or equities.
 * Proficiency in NinjaScript/C# for NinjaTrader 8 and Python for research, with familiarity in libraries such as pandas and vectorbt.
 * Strong understanding of avoiding overfitting through walk-forward analysis and proper out-of-sample testing.
 * Ability to model transaction costs accurately and discuss strategy capacity constraints and potential failures.
 * Excellent written English communication skills., * Experience with REST APIs for broker connectivity on the equities side.
 * Background in discussing and managing regime dependence in trading strategies.

## Description

* Port a defined trading strategy to NinjaScript, ensuring the backtest matches a Python reference implementation.
 * Develop a Python-based walk-forward validation framework to assess strategy performance, including in-sample vs. out-of-sample results and parameter sensitivity.
 * Document the validation framework for usability by other team members.
 * Engage in ongoing strategy development, contributing to the refinement and expansion of trading strategies across futures and equities.
 * Maintain clear communication and documentation to support asynchronous collaboration across time zones.


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