Brian | Quantitative Trading & Market Microstructure

I build and deploy systematic trading systems where statistical edge, market microstructure, and execution quality determine PnL.

My work focuses on trading decisions under uncertainty, with an emphasis on how order flow, liquidity, queue position, and market dynamics shape short-horizon outcomes.

I have built and deployed live trading systems across both market making and statistical arbitrage, from real-time signal generation and execution to inventory management, risk, and PnL attribution.

More broadly, I am interested in how information, timing, and execution interact to create - and ultimately determine whether an edge can be monetized.

Systematic Trading & Execution Systems

Focused on market microstructure, execution dynamics, and probabilistic decision-making in short-horizon trading systems.

1. Prediction Trading

Live - Prediction Markets Statistical Arbitrage Engine - Polymarket
Live statistical arbitrage strategy trading pricing inefficiencies in crypto prediction markets using options-implied probabilities and structural arbitrage.

What actually mattered
- Probability first: system attempts to quantify the probability of the event rather than trade purely on momentum.
- Trade the discrepancy: The objective is to identify P_model ≠ P_market with enough margin to justify taking risk.
- Exploit structural relationships: Related prediction contracts can contain arbitrage opportunities even without forecasting the underlying asset.
- Price execution matters: strategy evaluates executable bid/ask prices rather than relying exclusively on midpoints.
- Fees are part of the signal: An edge that disappears after fees is not an edge.

2. Execution & Market Microstructure

Systems that model order flow, liquidity, and matching dynamics in exchange-style environments.
Focused on market microstructure, execution dynamics, and probabilistic decision-making in short-horizon trading systems.

Live - Market Making Trading System - Adaptive Liquidity Provision System
Live market-making engine combining microstructure alpha, fair value, toxicity, and execution-aware quoting under realistic market conditions for systematic liquidity provision.

What actually mattered
- Alpha is horizon-dependent: current micro signal alpha exhibits increasing predictive information with horizon
- Regimes determine participation: the same signal can behave differently across market states.
- Toxicity is fill-dependent: the key question is whether a fill represents favorable liquidity provision or adverse selection.
- Execution drives realized edge: queue position, latency, snapshot age, and cancellations can outweigh marginal alpha improvements.
mm
Market Microstructure Model - Limit Order Book Simulation
High-performance C++ limit order book simulating price-time priority execution, order flow, and liquidity dynamics.

What actually mattered
- Queue position is a primary driver of execution probability in passive order flow
- Displayed liquidity is not equivalent to executable liquidity under fast order flow
- Execution outcomes are path-dependent and sensitive to order arrival sequence
- Liquidity consumption dynamics determine short-horizon fill uncertainty
C++ Query

3. Stochastic Decision Systems under Uncertainty

Monte Carlo-based frameworks for evaluating decisions under uncertainty and partial information.

Monte Carlo Decision Engine - Adversarial Sequential Decision Simulator
Multi-agent simulation engine for probabilistic decision-making under hidden information and dynamic state evolution.

What actually mattered
- Decision quality depends on outcome distribution, not just EV
- Risk-adjusted evaluation improves robustness under uncertainty
- Sequential dependency amplifies exposure to state uncertainty
- Optimal actions are sensitive to changes in underlying assumptions

4. Volatility & Risk Modeling Systems

Pricing, hedging, and volatility-driven portfolio construction under stochastic market conditions.

Delta Hedging & Volatility Trading Simulator
implementing dynamic delta replication, risk tracking, and PnL decomposition under discrete-time rebalancing.

What actually mattered
- Discrete hedging creates unavoidable replication error
- Gamma dominates PnL near expiry and during large moves
- Volatility mis-specification is the main driver of PnL deviation
- Option PnL is path-dependent rather than mark-to-model static

5. Market Data Infrastructure for Trading Systems

Systems for automated market data ingestion, transformation, and execution-style simulation.

Market Data Pipeline
Automated market data ingestion pipeline for XML financial data, with ETL processing and storage in Azure SQL for trading system integration.

What actually mattered
- Position sizing was constrained more by risk / margin than pricing output alone
- Exposure sensitivity mattered more than absolute model accuracy
- Small regime changes in volatility significantly altered portfolio risk
- Consistency between pricing and risk systems was critical for stability
Market Data Parser & Transformation Pipeline
XML market data parser for transforming hierarchical financial datasets into structured inputs for quantitative trading systems.

What actually mattered
- Data consistency is critical for trading correctness
- Small schema inconsistencies amplify into PnL distortion
- Most model failures originate from data, not modeling
- Market data is a first-order driver of strategy quality
XML Conversion Image 1

6. Other Engineering Work

Systems modeling and control projects in robotics and embedded systems, focused on dynamic system behavior and constrained optimization.
- Control systems (multi-actuator dynamics, feedback control)
- Embedded systems (autonomous actuation, real-time control)
Continuously Variable Transmission (Dual-Motor Control System)
Dual-motor system modelling variable torque transmission dynamics.
Smart Trolley Locking & Access Control System
App-controlled locking system for secure retail automation, integrating authentication, locking mechanisms, and real-time state tracking through an app-based interface.
Autonomous Delivery Trailer (Embedded Control System)
Autonomous delivery trailer with embedded sensing and control logic to enable stable motion and responsive actuation in a mobile logistics environment.
Custom LEGO Technic - Audi RS6
Custom multi-actuator vehicular control system modelling drivetrain and suspension systems.

Selected Engineering Work

- Market microstructure systems (order flow, liquidity, execution dynamics)
- Stochastic decision systems under uncertainty (Monte Carlo simulation, multi-agent modeling)
- Mechanical & embedded control systems (robotics, feedback control, autonomous systems)