johnsonlai628

Python Engineer.

I build and operate trading-critical systems at the intersection of execution, exposure, and market microstructure in crypto and derivative markets.

My work focuses on designing automation and tooling that detect abnormal market behavior, execution failures, and liquidity stress under high-volatility conditions — enabling faster decision-making and reducing exposure blow-ups in live trading environments.

I work closely with trading, dealing, and engineering teams, translating real market failure modes into production systems, controls, and infrastructure.
My background combines hands-on experience in trading environments with quantitative analysis, derivatives behavior, and system-level thinking.

Outside of my role, I independently build automation, data pipelines, and internal tools in Python to support trading-adjacent workflows.

I do not manage external capital or provide investment advice.

Experience: 4 years

Yearly salary: $96,000

Hourly rate: $50

Nationality: 🇹🇼 Taiwan

Residency: 🇹🇼 Taiwan

Experience

Trading Systems & Exposure Analyst

Unicorrn Fintech

2024 - 2025

• Owned real-time exposure and execution monitoring systems across multiple trading environments during volatile market conditions. • Designed and operated automation to detect pricing anomalies, execution failures, and abnormal trading behavior, reducing response latency in live markets. • Investigated execution, liquidity, and pricing incidents, translating real-world failure modes into system improvements and control logic. • Produced decision-critical exposure and market metrics to support escalation and incident response under stress scenarios. • Worked closely with trading, dealing, compliance, and engineering teams to resolve trading-related incidents and improve end-to-end execution workflows. • Contributed to process and system optimization initiatives, improving reliability and clarity of trading-critical procedures.

Data Assistant

Ally Transport

2023 - 2023

• Supported the development of automated SOP workflows to improve operational efficiency and reduce repetitive manual tasks. • Analyzed daily operational processes to identify bottlenecks and inefficiencies, applying Python-based tools to streamline procedures. • Assisted with data organization, validation, and quality checks to ensure consistency and reliability across internal reports. • Collaborated with cross-functional teams to support data-driven process improvements.

Skills

api

aws

crypto

cryptography

python

quantitative

quantitative-analyst

quantitative-trader

sql

english

chinese-mandarin

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