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Timothy Wayne Tjen A Looi Email & Phone Number
Global Whitebox Hacking Lead at Randstad Group
at
Randstad
LinkedIn matched
✓ Verified July 2026
3 data sources
Profile completeness 100%
Current company
Role
Global Whitebox Hacking Lead at Randstad Group
Location
Netherlands
Company size
Who is Timothy Wayne Tjen A Looi? Overview
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Quick answer
Timothy Wayne Tjen A Looi is listed as Global Whitebox Hacking Lead at Randstad Group at Randstad, a with 21 employees, based in Netherlands. AeroLeads shows a matched LinkedIn profile for Timothy Wayne Tjen A Looi.
Timothy Wayne Tjen A Looi previously worked as Global Whitebox Hacking Lead at Randstad and Technical ISO & Security Architect at Randstad Groep Nederland. Timothy Wayne Tjen A Looi holds Full Stack Development Javascript, Web Development from B. Startup School Amsterdam.
Company email context
Email format at Randstad
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Randstad
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Profile bio
About Timothy Wayne Tjen A Looi
Hacker, developer & ex-entrepreneur. I'm passionate about the inner workings of technology and building analytical understanding of any computer or human system. I enjoy playing around with complex systems, both in my job and in my free time.Things I enjoy outside of work: racket sports (padel), Spirit Island (board game) and e-sports.
Listed skills include Creativity, Leadership, Entrepreneurship, Time Management, and 5 others.
Current workplace
Timothy Wayne Tjen A Looi's current company
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11 roles
Timothy Wayne Tjen A Looi work experience
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Global Whitebox Hacking Lead
Current
Jun 2023 - Present
Technical Iso & Security Architect
Current- Technical delegate of the Information Security Officers.- Security representative at RGN Architecture Board and at IT technical domain leads.- Leading security initiatives such as: office network isolation & segmentation, secure internal API design, least privilege DevSecOps, secure Microsoft InTune configuration.- Assisting in the daily run of Security Operations.
Jan 2023 - Present
Technical Lead Security Testing
Technical lead of Security Testing Team:- Uphold quality standards for all pentests, red teaming exercises & vulnerability management processes;- Improving team's technical capabilities (coaching the other hackers);- Internal consultancy towards other departments, local & global Security Officers.
May 2021 - Jan 2023
Ethical Hacker
White-box hacker in the Security Testing Team. Specialized in web applications but will hack anything throw at us. Cutting the fluff out of external security advisories and building internal security trainings for tech & non-tech staff.
Sep 2020 - May 2021
Hacker & Developer
Timothy Wayne Digital Services
Self-taught hacker (OSCP, Hack The Box) while doing freelance web development, server infrastructure and security consultancy.
Oct 2018 - Sep 2020
Lead Developer & Data Protection Officer
Dynamic role as the lead developer in a small start-up team. Activities:+ Coordinating developers to achieve optimal business value;+ Leading internal GDPR compliancy processes;+ Working together with other organizational leaders to provide strategic direction.
Jan 2018 - Sep 2018
Web Application Developer
Full-stack web application development, working with:+ React / Redux / Webpack+ Spring Boot / Hibernate / Liquibase+ Kubernetes / IBM CloudLanguages: JavaScript (ES6), Java 8, Python 3.6, HTML5, CSS3
Jan 2017 - Dec 2017
Jan 2015 - Dec 2016
Intern Front-End Web Development
Y-Gen Web Creatives
Helped improve the strategy, marketing and sales of the business while learning the technical skills of the industry to create high quality custom websites.Final project is made in collaboration with my supervisor: www.timothytjen.com Skills:+ Translating Photoshop design into HTML & CSS+ Implementing JavaScript plugins+ Basic PHP+ Business development
Jun 2014 - Aug 2014
Workshop Facilitator
Facilitated over 10 workshops aimed at personal and business development. Innovated and contributed in the marketing, strategy and information systems.Skills:+ Coaching sessions (group and individual);+ Product development and marketing advice;+ Obtaining website content;+ Managing (social media) marketing campaigns.
Dec 2013 - May 2014
4 education records
Timothy Wayne Tjen A Looi education
Full Stack Development Javascript, Web Development
B. Startup School Amsterdam
Bachelor Of Science - Bs, International Business Administration
Vrije Universiteit Amsterdam (Vu Amsterdam)
Entrepreneurship & Social Innovation, Entrepreneurship/Entrepreneurial Studies
Knowmads Business School
Vwo, Economics
Ksh Hoofddorp
FAQ
Frequently asked questions about Timothy Wayne Tjen A Looi
Quick answers generated from the profile data available on this page.
What company does Timothy Wayne Tjen A Looi work for?
Timothy Wayne Tjen A Looi works for Randstad.
What is Timothy Wayne Tjen A Looi's role at Randstad?
Timothy Wayne Tjen A Looi is listed as Global Whitebox Hacking Lead at Randstad Group at Randstad.
Where is Timothy Wayne Tjen A Looi based?
Timothy Wayne Tjen A Looi is based in Netherlands while working with Randstad.
What companies has Timothy Wayne Tjen A Looi worked for?
Timothy Wayne Tjen A Looi has worked for Randstad, Randstad Groep Nederland, Timothy Wayne Digital Services, Healthy Workers, and Zombie Escape Amsterdam.
How can I contact Timothy Wayne Tjen A Looi?
You can use AeroLeads to view verified contact signals for Timothy Wayne Tjen A Looi at Randstad, including work email, phone, and LinkedIn data when available.
What schools did Timothy Wayne Tjen A Looi attend?
Timothy Wayne Tjen A Looi holds Full Stack Development Javascript, Web Development from B. Startup School Amsterdam.
What skills is Timothy Wayne Tjen A Looi known for?
Timothy Wayne Tjen A Looi is listed with skills including Creativity, Leadership, Entrepreneurship, Time Management, Social Media Marketing, Lead Generation, Strategy, and Software Development.
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