Bill Jian Tan

Algorithmic Trader

Star Software Inc. | 04/2020 – Present

• Strategy Development: Designing trading strategies using quantitative research and statistical modeling (e.g., trend following, mean reversion, or arbitrage).
• Backtesting & Simulation: Testing strategies against historical market data to evaluate risk and profitability before live deployment.
• Coding & Implementation: Writing production-quality code to automate trade execution and manage order flows.
• Real-time Monitoring: Overseeing live trading systems to ensure they execute as intended and intervening during market anomalies or technical failures.
• Performance Optimization: Continuously fine-tuning algorithms to improve execution speed (low latency), reduce slippage, and lower transaction costs.
• Risk Management: Implementing automated risk controls to limit potential losses and ensure compliance with regulatory standards.

Data Center Engineer

Fire Department of New York | 03/2017 – Present

• Work with Fire Chief Dispatchers at PSAC2 to identify all issues related to FireCAD system
• Open FDNY ServiceNow support tickets and assign to the group as per support document require
• Monitor FireCAD summary screens in five boroughs BX, MN, QN, BK, SI
• Monitor LiveMum and troubleshoot any connection failure for Datawall at dispatch floor
• Monitor FireCAD interfaces in Grafana and troubleshoot any the connection failure
• Onsite support for Accenture to identify all issues related the new FireCAD system
• Install and configure FireCAD summary screens and interactive screens at PSAC2
• Onsite support security officer Joseph Palmieri for all related system updates and security updates
• Onsite support network engineer Shaka Simms for all related PSAC2 network troubleshoot
• Onsite support FDNY programmer team Carla Murphy, Viktor Kanevsky for all CAD issues
• Coordinate with desktop, servers group, security team, network group, CAD programmers at PSAC2
• Maintain Emergency Medical Service Computer Aided Dispatch Integrity Servers (EMSCAD)
• Monitor EMSCAD Consoles, Address Servers, Electronic Patient Care Reporting Servers
• Monitor Fire CAD concentrators of Manhattan, Bronx, Queens, Brooklyn, and Staten Island using WMware vSphere
• Image, Script, and Configure Windows 7 User Workstations and Supervisor Workstations
• Install LANDesk v10 and McAfee for workstation computers and server computers
• Initiate and Perform Scheduled Tasks for Unisys Systems (Dorado), Printer Room, Tape Library
• Troubleshoot Servers Workstations hardware CUP, Memory, Motherboard, Hard Drive, RAID Controller Card
• Install Printer Driver, Troubleshoot Printer Network Problems, Cartridge Issues, Paper Jams
• Represent Datacenter Operations for All Incoming Calls, Including Requests, Complaints
• Support Critical Systems, FireCAD, Starfire, EMSCAD, and Dorado that require 24/7 Maintenance
• Maintained FDNY Starfire System: Concentrator, SRS, SEP, Silent Hawk, PCCRT, PCMAP, PCATS
• Maintain FDNY ERS/EMADS System: Audio Processor, Automated Loop Test System, Telegraph Processor, MIS Server, MIS GUI, Switch Matrix, AFE, ATI, Gateway, Power Supply Controller, Power Supply
• Maintain FDNY Voice Alarm System: Voice Processor, Line Card, CPC card, VA Console, VA Red Phone, VA Door and Plate
• Install, Configure, and Troubleshoot FDNY Voice Alarm System: Windows Server, Networking and Teaming, Active Directory, DNS, Clustering, MSSQL, VCWin, Backup Image, VA Console
• Install, Configure, and Troubleshoot FDNY MIS System: Windows Server, Networking and Teaming, Active Directory, DNS, Clustering, MIS Server, MySQL, Backup Image, MIS GUI
• Perform FDNY CMO updates, Starfire Backup Boro Testing, Preventive Maintenance at FDNY Central Offices and PSAC
• Maintain FDNY Network Connectivity for Cisco Router 2821 and Cisco Switch Catalyst 3560G

Office Manager

Excelsior | 11/2013 – 03/2017

• Managed 30+ employees both in Brooklyn office and Queens office
• Interviewed and hired qualified job applicants, oriented new employees on job requirements, policies
• Approved time off and work schedules to assure proper staff coverage
• Maintained time records and submit proper information to the payroll department
• Supervised IT operations and provide professional IT Administration coverage
• Maintained Novarad servers infrastructures and PACS related troubleshoot
• VIP support for Dr. Kuang, Dr. Sun, Dr. Raccuia, Dr. Qiu on the spot
• Provided PACS emergency supports for 835 Brooklyn site, 142-38 Queens site
• Provided network administration and troubleshoot for Ultrasound, CT, X-Ray, Mammo modalities
• Followed up modality vendor communication promptly as new requirements and compliances rise
• Designed and implemented IT solutions according to the business requirements and compliances
• Designed, maintained, supported, and troubleshot Cisco routing and Cisco switching
• Maintained and supported Cisco firewall security and IPSec Site to Site VPN connections
• Provided support and maintenance for VoIP Phone system and extensions troubleshoot
• Maintained, monitored, troubleshot cisco firewall appliance and IPSec VPN
• Designed, Deployed and Developed Infrastructure Utilizing Windows 2008 Active Directory
• Configured VMware ESXi 5.5, VMware vSphere 5.5, and VMware vCenter Server 5.5
• Configured, Monitored and Maintained Virtual Machines on VMware ESX servers
• Designed, Deployed, and Maintained Windows 2008 R2 Systems and Components (AD, DHCP, DNS, NTP, CA, Active Directory, GPO)
• Configured Active Directory Domain Services (ADDS), Group Policy Objects (GPO), Domain Name System (DNS), Dynamic Host Configuration Protocol (DHCP), File Sharing services
• Performed mailbox moves and migrations and troubleshot message routing problems as well as OWA, Exchange ActiveSync.
• Initiated and Scheduled Application Data Backup, Created OS Backup Image, Troubleshot Internet Down Issues, Performed Routers/APs backup, PBX Restart and data backup, Maintained Fax Server, Performed Printer Drivers installation and Cartridge Replacement, Remote Monitoring, VPN troubleshooting, Application server patch and version upgrade
• Provided support for desktop applications, scanners, fax machine, and network printers
• Troubleshot and repaired LAN/WAN communication problems involving routers, hubs, switches and modems
• Provided supports and maintenance for desktop, APs, security camera system

Financial Analyst

Goldman Sachs | 06/2010 – 11/2013

• Regulatory Reporting: Prepared and submited mandated non-financial and financial reports to global regulators (e.g., FED, SEC, FINRA, CFTC).
• Data Analysis & Reconciliation: Performed daily analysis of trade and order data, managed exceptions, and ensured data integrity across books and records.
• Risk Management: Acted as a first line of defense by identifying, monitoring, and mitigating regulatory and reputational risks.
• Process Improvement: Drived strategic initiatives to automate manual processes and enhanced control frameworks.
• Stakeholder Collaboration: Liaised with Legal, Compliance, Engineering, and various business units to resolve reporting issues and implemented new regulatory requirements.
• Audit Support: Assisted with internal and external audits and responded to inquiries from supervisory authorities.
• Assisted in all aspects of preparing BASEL II FF IEC 101, Federal Call Report FFIEC 031, FR Y-9C, FR Y-11, and FR 2314 reports
• Teamed up with Ernst & Young to create Ad Hoc management reports
• Analyzed, designed, and implemented enhancements and improvements for Axiom regulatory reporting platform
• Assisted in automation using Excel, SQL, and Java programming language
• Drive process improvement or re-engineering by identifying and implementing automation opportunities
• Acted as an effective layer of escalation for junior or less experienced staff on complex issues
• Proactively identified areas for improvement and automation to reduce operational risks and enhance the control environment

Bachelor of Computer Science

Cumulative GPA: 4.00/4.00

Baruch College/CUNY, New York, New York | February 2010

Relevant Coursework:

Object Oriented Programming IInformation Systems and Technologies

Object Oriented Programming IIInformation Systems Development Project

Systems Analysis and DesignE-Commerce Technologies

Web Application ProgrammingNetworks and Telecommunications

Database Management Systems

Bachelor of Mathematics

Cumulative GPA: 4.00/4.00

Baruch College/CUNY, New York, New York | February 2010

Relevant Coursework:

Calculus IOrdinary Differential Equations

Calculus IICalculus Based Probability

Calculus IIILinear Algorithms and Matrix Method

Advanced CalculusTheory Functions of Complex Variable

Statistics Principles and Applications

Bachelor of Finance and Investment

Cumulative GPA: 3.95/4.00

Baruch College/CUNY, New York, New York | June 2008

Relevant Coursework:

Investment AnalysisEquity Markets

Advanced Investment AnalysisFutures Markets

Corporate FinanceInternational Financial Markets

Advanced Corporate FinanceFinancial Analysis w/ Excel

Technical AnalysisStrategic Management

Economics (Completed Economics Major Requirement)

Baruch College/CUNY, New York, New York | June 2008

Relevant Coursework:

MacroeconomicsStatistical Analysis for Economics and Finance

MicroeconomicsInternational Economics and Finance

Intermediate MacroeconomicsPrinciples of Accounting

Intermediate MicroeconomicsPrinciples of Managerial Accounting

Advanced MicroeconomicsMarketing Foundations

VMware

VMware Certified Associate 6 Data Center Virtualization

College Professor Assistant

College Reading and Learning Association Certified Tutor

YMCA Lifeguard

HIS Basic Life Support Certificate

HIS Adult First Aid Certificate

HIS Emergency Oxygen Certificate

Completed VMware Certified Associate 6 – Data Center Virtualization Training

Install, Configure, and Maintain VMware ESXi 5.5

Install, Configure, and Maintain VMware vCenter Server 5.5

Install, Configure, and Maintain VMware vSphere Client 5.5

Install, Configure, and Maintain VMware Virtual Machines

Completed MCSE Training

Windows Server 2008 Server Administrator

Configuring Windows Server 2008 Active Directory

Configuring Windows Server 2008 Network Infrastructure

Configuring Windows Server 2008 Applications Infrastructure

Completed Programming Language Training

C programming fundamentals

C++ OOP programming fundamentals

C# OOP Windows Forms Programming

Java OOP EMR programming

Python data science programming

HTML CSS Javascript programming

Completed Cisco CCNP, CCNA Training

Cisco 642-627 IPS CCNP Security

Cisco 642-637 Firewall Specialist

Cisco 642-648 VPN ASA Specialist

Cisco 642-618 Firewall

Cisco 640-554 CCNA Security

Cisco 642-661 Configuring BGP

Cisco 642-902 Routing

Cisco 642-813 Switching

Completed Relational/Non-relational Database Training

Oracle Database 10g relational database management system

Microsoft SQL Server 2008 R2 relational database management system

MySQL 5.5 relational database management system

MongoDB nosql non-relational database management system

Completed Microsoft Exchange 2010 Administration Training

Install, Configure, and Maintain Maibox Server Role

Install, Configure, and Maintain Client Access Server Role

Install, Configure, and Maintain Hub Transport Server Role

Install, Configure, and Maintain Edge Transport Server Role

Completed Microsoft Lync Server 2010 Administration Training

Install, Configure, and Maintain Lync Server System

Install, Configure, and Maintain Lync 2010 Clients

Proprietary Trading Algorithm

designs, develops, and deploys automated trading systems that execute financial transactions based on predefined rules, speed, and data. Unlike traditional traders who make manual decisions, algo traders rely on mathematical models and high-performance code to exploit market inefficiencies.

Advanced proprietary algorithms for financial trading, trade screener, candlestick chart, buy/sell signal, buy/sell strategies.

In-house research to create its diversified investment portfolio for high networth investors.

AI Development

Artificial Intelligence development using Large Language Models and other specific models to accomplish the complex needs for clients.

Proprietary MultiThread Ping Monitors

Thread? ThreadStart? Invocation? 4000 Milliseconds TimeOut? Give the network engineer THE best networking tool with peace of mind.

Proprietary Student Exam Practice Test Bank

Strongly recommended for students, tutoring service, and school teachers to help better prepare for the real exams.

Proprietary Real Estate Broker Manager

Real Estate house listing has ever been so easy as before. It is customizable. The new feature can be added anytime.

Proprietary Real Estate Attorney Manager

Hard to document your client transaction log and progress notes, NOW to make the case with this amazing customize software.

Proprietary Timesheet and Clock In/Out

It is simple to use and straight forward time attendance software. It can also track your employee pay and over time pay.

Proprietary Paperless Document Manager

A lot of paper and folders everywhere, frustratedly CAN'T find the needed file when your coworkers and clients request it.

Proprietary Help Desk/Ticket System

Ideal for business to manage their day to day operations and monitoring the case progress. Update the case progress concurrently.