John Young - Chief Technology Officer | Full Stack Engineer | DeFi Systems Architect

John Young_

Chief Technology Officer | Full Stack Engineer | DeFi Systems Architect

Email:: john.anto.young@gmail.com
Location:: Laurel, Maryland

Nice to meet you_

With 12+ years in fintech, spearheaded multi-agent systems development, optimized workflow automation, and led technical due diligence for portfolio investments. Fine-tuned LLMs for enhanced investigation efficiency and built data infrastructure processing 100K+ daily events. Expertise spans agentic workflow automation, risk management, and financial modeling.

Husband to the most beautiful woman in the world. Runner-up in 6th grade spelling bee. Super-nerd.

Resume_

employment

Combine Capital

2023 - Present

Chief Technology Officer

Spearheaded multi-agent systems development, optimized workflow automation, and led technical due diligence for portfolio investments.

Implemented a robust multi-agent system that streamlined data processing, achieving a 75% reduction in analysis time and increasing decision-making speed within 3 months
Fine-tuned LLMs to explain complex DeFi transactions in plain English, improving investigation efficiency by 65% for compliance reviews
Built ReAct-based agentic workflow automation for complex DeFi transactions, integrating dynamic slippage optimization and MEV protection across 10+ protocols
Developed an end-to-end data infrastructure that processed 100K+ daily events across multiple EVM chains and CEXs, enhancing data accessibility within 6 months
Led technical due diligence for portfolio investments

FRACTAL (Fractal Wealth)

2021 - 2022

Software Engineer

Designed and deployed automated crypto/DeFi trading strategies.

Developed a backtesting framework that processed 5+ years of historical data, enhancing strategy validation and performance analysis within 4 months
Engineered risk management systems with dynamic position sizing, reducing potential losses by 40% within 4 months through advanced algorithmic strategies

Cryptosheets

2018 - 2021

Founder & Chief Technology Officer

Founded and scaled cryptocurrency data platform to 30,000+ active users.

Built Microsoft Excel add-in providing real-time crypto market data via custom APIs
Designed scalable architecture handling 1M+ daily API requests
Led successful acquisition by private buyer within first year of operation
Managed product roadmap, technical development, and customer success

Spreadstreet.io

2016 - 2019

Founder & Chief Software Architect

Created Google Sheets integration for cryptocurrency market data.

Developed custom functions and real-time data feeds for 500+ cryptocurrencies
Built subscriber base of 5,000+ users with recurring revenue model
Negotiated and completed successful exit to strategic buyer

Capital One

2010 - 2017

Principal Financial Analyst

Progressive roles: Finance Rotation Program Analyst → Senior Financial Analyst → Principal Financial Analyst.

Led cross-functional teams in developing financial models for $1B+ credit card portfolio
Built automated reporting systems reducing manual processes by 70%
Developed predictive models for customer acquisition and retention strategies
Mentored junior analysts and led training sessions on advanced Excel and SQL techniques

education

Towson University College of Business and Economics

2008 - 2010

Bachelor of Science, Finance & Economics (Dual Concentration)

Activities: Towson University Investment Group

Thinkful

2018 - 2019

Engineering Immersion Program

Intensive 6-month program requiring 60-90 hours per week focused on full-stack development with JavaScript, React, Node.js, and PostgreSQL

certifications

StrategyV2 Developer

May 2024

Hummingbot Foundation

Developed trading strategy voted MVP by peers and instructors at demo day presentation

MVP NFT Proof | Certification List (Cohort 7)

technical skills

Languages

Go Python Solidity SQL TypeScript

AI/ML & LLM Technologies

Anthropic Claude API OpenAI API Gemini API LangChain LangGraph AutoGen CrewAI Multi-agent orchestration RAG architectures Model fine-tuning ReAct patterns

Frontend Development

React Next.js Vue.js Tailwind CSS Ant Design D3.js Recharts

Backend Development

Node.js REST APIs GraphQL gRPC WebSockets

Databases & Vector Stores

PostgreSQL MongoDB Redis TimescaleDB BigQuery ChromaDB Pinecone Qdrant

Infrastructure & DevOps

AWS GCP Docker Kubernetes CI/CD Modal

Blockchain & DeFi

Uniswap Aave Compound Ethers.js Web3.js EVM chains

Trading Systems

Autonomous agents Backtesting frameworks CCXT Hummingbot Risk management Order Management Systems

My Projects_

Open-source educational cookbook for fine-tuning language models on blockchain data using QLoRA/LoRA. Complete examples for extracting structured intents from Ethereum transactions with 90%+ accuracy.

PyTorch HuggingFace QLoRA web3.py Ethereum

Powerful Go CLI that sends prompts to multiple LLMs in parallel and uses a Master Agent to synthesize responses from OpenAI, Google Gemini, Groq, and Anthropic Claude.

Go Claude GPT-4 Gemini Parallel Processing

Production-ready Go library and CLI for collecting historical OHLCV cryptocurrency market data with automatic gap detection, self-healing, and pluggable storage adapters.

Go DuckDB PostgreSQL Time Series Crypto APIs

Real-time cryptocurrency data platform for Microsoft Excel with 30,000+ active users. Full-featured Excel add-in with live market data, portfolio tracking, and custom formulas.

React Node.js PostgreSQL Excel APIs WebSockets

Powerful CLI for generating LLM prompts from codebases. Features directory traversal, file filtering, Git integration, and token counting for AI-assisted development.

Go CLI Git Templates Token Counting