I will build institutional quantitative trading systems in python
Quantitative Developer: Trading Systems from Research to Production
About this Gig
I develop quantitative trading systems in Python for professional traders, hedge funds, asset managers, family offices, and fintechs, connecting research, artificial intelligence, and production engineering.
Projects can start with a hypothesis or an existing system and cover data, features, signal research, modeling, portfolios, and risk.
I apply Machine Learning, Deep Learning, NLP, and reinforcement learning when suited to the problem. Models can use tick-by-tick data, L2/L3 order books, point-in-time fundamentals, macroeconomic data, news, and alternative data.
Research compares approaches and evaluates their contribution after costs, with time-based validation, realistic backtests, and reproducible results.
In production, I integrate models, risk controls, and automated execution, with monitoring and procedures to handle failures and shifts in data patterns.
You receive modular source code, models, and documentation to understand, audit, and extend the system, based on the package and scope.
Contact me before ordering to align on objectives, data, integrations, and acceptance criteria. NDA available.
FAQ
Can you build a system from scratch or improve an existing one?
Yes. I can research a hypothesis, implement rules, or review existing data, models, and code. Share your objective, market, timeframe, and available materials. Together, we define requirements, risk constraints, integrations, and deliverables.
What is the difference between the packages?
Research assesses the hypothesis and structures data, features, and an initial model. Validated builds the system, compares models, and tests robustness for paper trading. Production adds advanced validation, automated execution, model monitoring, and assisted deployment.
How do you use Machine Learning, Deep Learning, and NLP?
ML/DL can support forecasting, signal selection, and regime detection. NLP turns news, reports, and text into quantitative features. Reinforcement learning can be researched for allocation and execution. I compare models against simple baselines to assess their incremental value.
Which markets and exchanges do you develop systems for?
Crypto, stocks/ETFs, CFDs, futures, options, commodities, FX, and fixed income. Exchanges and groups: NYSE, Nasdaq, LSE, Euronext, Xetra, SIX, JPX, HKEX, ASX, B3, TSX, NSE, SSE, SZSE, KRX, CME Group, Cboe, ICE, Eurex, SGX, and TAIFEX. Coverage depends on available data and execution.
Which brokers, exchanges, and infrastructure can you integrate?
IBKR, Charles Schwab, TradeStation, tastytrade, Alpaca, OANDA, Webull, Tradier, Public, Saxo Bank, Binance, Coinbase, Bitfinex, Bybit, OKX, Kraken, Deribit, Rithmic, CQG, Bloomberg EMSX, Trading Technologies, FlexTrade, and SS&C Eze. REST, WebSocket, FIX, or SDKs, depending on access and platform.
Which data sources can you integrate?
Bloomberg, LSEG, FactSet, S&P Global, ICE Data Services, Databento, Nasdaq Data Link, dxFeed, Cboe DataShop, CME DataMine, OptionMetrics, Macrobond, RavenPack, Kaiko, Coin Metrics, MSCI, and your own data. Access and licensing are required; external costs are handled separately.
How do you validate strategies and models and reduce overfitting?
Depending on scope, I use OOS, walk-forward, Monte Carlo, sensitivity, regime, and stress tests with costs, slippage, and liquidity. I check for overfitting, look-ahead bias, and data leakage. Test data stays out of training and feature selection. I compare models against simple baselines.
What technology stack do you use from research to production?
Python, SQL, C++, pandas, NumPy, SciPy, Polars, statsmodels, scikit-learn, XGBoost, PyTorch, Transformers, MLflow, QuantConnect/LEAN, Jupyter, vectorbt, backtrader, FastAPI, PostgreSQL, Docker, Linux, pytest, Git, CI/CD, Prometheus, Grafana, AWS, Azure, and Google Cloud, depending on the project.
How do you prepare the system and models for production?
Depending on scope, I add tests, logs, exposure limits, order reconciliation, and failure recovery. This may include model versioning, monitoring for data shifts, and retraining criteria. I provide operating instructions; ongoing support is agreed on separately.
How do you handle communication and confidentiality?
I prioritize Fiverr chat and written documentation, with traceable updates and decisions. Short Fiverr calls can support alignment and demos. NDA available; your strategy, code, data, models, documentation, and results remain confidential.
1 reviews for this Gig
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Rating Breakdown
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- Quality of delivery
- Value of delivery
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C chrisdowden

United States
Filipe was highly professional and rigorous throughout the engagement. He showed excellent attention to detail, carefully verified requirements, documented assumptions and limitations, and raised ambiguities rather than making unsupported assumptions. His deliverables were thorough, well organized, and...
$1,000-$2,500
Price
2 weeks
Duration
Helpful?
1 reviews for this Gig
| (1) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
C chrisdowden

United States
Filipe was highly professional and rigorous throughout the engagement. He showed excellent attention to detail, carefully verified requirements, documented assumptions and limitations, and raised ambiguities rather than making unsupported assumptions. His deliverables were thorough, well organized, and...
$1,000-$2,500
Price
2 weeks
Duration
Helpful?

