John Khoo

John Khoo: Email & Phone Number

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Quantitative Developer at Citadel Securities|Singapore

Position:

Quantitative Developer at Citadel Securities

Location:

Singapore

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Last updated: 2026-06-15
Updated: 2026-06-15

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Work Experience 10 years

Quantitative Developer at Citadel Securities

Jan 2026 - Current

Member of Technical Staff II (Communications Security) at DSO National Laboratories

Jul 2024 - Dec 2025

Member of Technical Staff I (Communications Security) at DSO National Laboratories

Sep 2022 - Jul 2024

Research Intern at DSO National Laboratories

May 2021 - Jul 2021

Electronics Engineering Intern at Squareroot8 Technologies

Jan 2020 - Jan 2021

Research Intern at DSO National Laboratories

May 2020 - Jul 2020

Teaching Assistant at National University of Singapore

Jan 2020 - May 2020

Software Engineer at SG Investors Corporate Services

Nov 2018 - Jan 2019

Platoon Sergeant at Singapore Army

Dec 2016 - Feb 2018

Their professional focus is Analytical Skills, ARM Architecture, and C across 3 core areas.

John holds Respond to Fire and Hazmat Emergencies and Cisco Certified Network Associate Routing and Switching (CCNA) certifications and has been awarded DSO Merit Scholarship

Education

Bachelor of Engineering at National University of Singapore

Frequently Asked Questions

What is John Khoo's email address?

SignalHire found verified email addresses for John Khoo, both business and personal. Their business email is k******n@citadelsecurities.com, and personal emails include j********f@gmail.com.

What is John Khoo's phone number?

SignalHire found a verified phone number for John Khoo: +65-***-***-4781.

How do I contact John Khoo at Citadel Securities?

You can reach John Khoo through SignalHire by unlocking their verified email and direct phone number (free signup, no credit card needed). SignalHire is the fastest route if you need their contact details immediately.

What is John Khoo's professional background?

John Khoo has 10 years of professional experience. They have held roles including Member of Technical Staff II (Communications Security), Member of Technical Staff I (Communications Security), and Research Intern at companies such as DSO National Laboratories, DSO National Laboratories, and DSO National Laboratories. Their education includes Bachelor of Engineering from National University of Singapore.

Is John Khoo's contact information up to date?

Yes. John Khoo's SignalHire profile was last updated on 15 June 2026, reflecting their current position as Quantitative Developer at Citadel Securities in Miami, Florida, United States.

John Khoo Namesakes

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John Khoo
Factory Manager
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