David Agyei

About Me

Quantitative Developer & Software Engineer (ML/AI)

David Agyei

I'm a quantitative developer and software engineer focused on building production-grade systems for financial markets and data-intensive products. My work covers time-series modeling, backtesting, and signal research—shipped as robust services and tools.

On the engineering side, I design and implement clean APIs, data pipelines, and services with strong testing, observability, and CI/CD. I've built order-book/OMS simulations, volatility forecasting, and ML-filtered strategies end-to-end—from data ingestion to deployment.

Stack highlights: Python (pandas, NumPy, scikit-learn, PyTorch), FastAPI/Node, Postgres/Redis, Docker, GitHub Actions, and React when a UI is needed. I care about correctness, performance, and maintainable code.

Technical Skills

Quant & ML

Time-Series: feature engineering, temporal CV, labeling

Models: scikit-learn, PyTorch, GARCH/ARCH, Random Forest

Metrics: Sharpe, max drawdown, CAGR, turnover

Software Engineering

APIs & Services: FastAPI, Node/Express, WebSockets

Architecture: modular design, OOP, clean interfaces

Quality: pytest, type hints, CI/CD (GitHub Actions), Docker

Data Platforms

Sources: yfinance, Bitquery, Google Sheets API

Storage: Postgres, Redis, SQLite

Pipelines: ETL, caching, batch & streaming

Applied AI

Agents: LangGraph workflows, structured extraction

Integrations: external APIs, Google services

Products: analytics dashboards, automation tools

Relevant Coursework

Fall 2023

First Quarter

CMSC 14100 Introduction to Computer Science I
MATH 15100 Calculus I
PHYS 13100 Mechanics
Winter 2024

Second Quarter

PHYS 13200 Electricity & Magnetism
MATH 15200 Calculus II
Spring 2024

Third Quarter

MATH 18300 Mathematical Methods in the Physical Sciences I
Fall 2024

First Quarter

MATH 19620 Linear Algebra
Winter 2025

Second Quarter

MATH 15910 Introduction to Proofs in Analysis
CMSC 14200 Introduction to Computer Science II
Spring 2025

Third Quarter

MATH 20250 Abstract Linear Algebra
CMSC 14300 Introduction to Systems Programming I
CMSC 25300 Mathematical Foundations of Machine Learning
Summer 2025

Fourth Quarter

FINM 25000 Quantitative Portfolio Management and Algorithmic Trading
CMSC 27100 Discrete Mathematics