Dae Choi
Verified Expert in Engineering
Software Developer
Dae has over 20 years of hands-on experience in the areas of capital markets, trading, alternative asset management, health care, and transportation sectors that span a full lifecycle, from hardware infrastructure to application development across multiple platforms.
Portfolio
Experience
Availability
Preferred Environment
Vim Text Editor, Linux, Windows, React, Cosmos, Python 3, GraphQL, Go, Apache Kafka, Hadoop
The most amazing...
...project I've designed and implemented from scratch to support full trade lifecycle is a trading platform of multi-asset securities for a large hedge fund.
Work Experience
Software Consultant
Standard General, LP
- Developed a position and trade reconciliation system for Geneva and BMS.
- Developed and supported various reports for trades, and historical returns.
- Developed an investor database and support for multiple funds.
Principal
Domanic, LLC
- Provided infrastructure and system architecture reviews and security operations monitoring to improve response time and reduce technology expenditures for MTA across major agencies such as MetroNorth, NYC Transit, Bridges and Tunnels, and LIRR.
- Implemented SOC-type2 controls with proactive monitors, alerts, and audit trails based on severity using CloudWatch, CloudTrails, and GuardDuty along with AWS SNS/lambda triggers. Set up AWS X-ray to monitor data flows and business exceptions.
- Optimized the processing of over 8 million patient records from few hours to under sub-seconds. Introduced DevOps practices and led efforts to automate scaling and provisioning of resources. Directly trained CSMs to handle complex customer inquiries.
- Removed underperforming bottlenecks on Django to AWS Lambda functions and API Gateway. Refactored user identity management in Django to leverage AWS Cognosys. Migrated an idling EC2 to Fargate to slash costs while improving availability.
VP of Engineering
LoanStreet
- Improved operational efficiency, scalability, and reliability. Presented DevOps with CloudFormation and refactored Makefile and Git Hooks to trigger testing and continuous deployment using a Travis build script to improve automation and productivity.
- Devised Lambda/S3 triggers to scan for virus or malware on incoming client transaction files to quarantine data and alert the support staff.
- Led the front and back-end development with coding best practices and guidelines. Actively reviewed code changes in Git pull requests throughout the day to ensure high code quality and best practices.
- Created a high-performance culture by building a collaborative team. Inherited a team with no discernible work process and instilled the Agile software development methodology.
Software Consultant
Reservoir Capital, LP
- Developed a solution to pull live information out of multiple QuickBooks files and generate Excel reports real-time.
Chief Technology Officer
King Street Capital Management
- Designed the technology roadmap and budgeting, reviewing designs, and defining standards. Led implementations and collaborated with stakeholders to increase the adoption of best practices and avoid redundancies.
- Identified revenue opportunities through the development of a standardized information infrastructure to support the full-trade lifecycle for multiple asset types through team collaboration across the organization.
- Formed and maintained a staffing plan with an eye towards minimizing the firm’s cost and dependencies on contractors and vendors while maximizing ROI and service levels.
- Conceptualized and built out a scalable private and secure cloud infrastructure to provide resiliency and high-performance computing, as well as a network platform to support and collaborate across global operations.
- Created email alerts to filter out the noise and trigger notifications and workflows based on market events and complex scenarios with a proprietary complex event processing engine and an exception-driven model.
Principal
Liberty Street Partners, LLC
- Provided the analysis, design, and implementation of a web-based portfolio analytics program for the research group at a $2.5 billion fund of the hedge funds investment manager.
- Implemented a back-office integration framework for a proprietary trading firm with 200 traders and seven different clearing firms. Automated the workflow to receive and match transactions from each firm to post changes to the firm's general ledger.
- Implemented a software and hardware pilot solution for Microsoft Global Summit (commissioned by USAID and Dell) to enable two manufacturing companies and freight forwarders to trade overseas using an electronical document exchange based on XML.
Architect
Sapient, Inc.
- Implemented a subscription-based web portal for Moody's Investor Service to enable institutional clients to access Asset-Backed and Residential Mortgage Backed performance data from 1980’s to the present. Responsible for overall site design and architecture.
- Extracted business requirements and process flows for Morgan Stanley to redesign and consolidate Individual Investors' web portal ("public site") and rich-client based account management tool ("ClientServ") into a single web-based platform. Responsible for producing new interface processes, front-end screen flows, use cases, scope matrix, and functional specifications (Online Trade, Statement Link, Client Profile Management, and Research).
- Defined architecture, established layering of components, naming convention, deployment strategy, and other elements of application's infrastructure, incorporating company security requirements and considerations for simultaneous development by several developers for Bessemer Trust.
- Developed enterprise web application for secure document delivery and processing using iManage and Tumbleweed. Devised an overall strategy for the centralized framework and application management, database synchronization schedules and updates for Goldman Sachs.
- Developed programmatic SDK API for Bear Stearns' institutional clients to interface with Bear Stearns' security transactions and clearance infrastructure. Responsible for defining the technical architecture to interface with the firm's Entitlement Systems to extend existing Single Sign On infrastructure with EJB for Bear Stearns.
Architect
Intelisys, Inc.
- Developed a fault-tolerant network security design and system administration for the electronic commerce message exchange.
Experience
Impacting Lives
Most recently I founded a technology start-up to help secure and protect from cyber threats to critical infrastructures in the nation's largest transportation sector. Spanning across multiple agencies, I helped identify infrastructure and application vulnerabilities, improve security operations monitoring, and formulate escalation and mitigation strategy to help safeguard the lives of 8.6 million average daily commuters.
Impacting Finance
eyeMark
Skills
Languages
Python, JavaScript, C#, SQL, Excel VBA, Go, VB, C++, Java, Visual Basic, Active Server Pages (ASP), Objective-C, Python 3, GraphQL
Libraries/APIs
React, Node.js, Twitter API, Bloomberg API
Tools
Mongoose, AWS CloudFormation, Vim Text Editor, Git, Advent Geneva, Microsoft Excel
Paradigms
ETL, Agile
Storage
MongoDB, PostgreSQL, Data Pipelines, SQL Stored Procedures, Microsoft SQL Server, MySQL
Industry Expertise
Cybersecurity
Other
Hedge Funds, Business Continuity & Disaster Recovery (BCDR), Unix Shell Scripting, AWS Cloud Architecture, SCADA, IIS, Cisco, Intuit QuickBooks, BizTalk, Cosmos, CI/CD Pipelines
Frameworks
Angular, .NET, Hadoop
Platforms
Windows, Docker, Linux, Solaris, Apache Kafka, Visual Studio Code (VS Code)
Education
Bachelor's Degree in Mathematics
Polytechnic University - Brooklyn, NY
Certifications
MCSE
Microsoft
MCSD
Microsoft
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