Languages

Dutch (native)
English (proficient)
Swedish (beginner)

Date of Birth

14 March 1991

Nationality

Dutch

Email

guido@kroon.email

Employment History

May 2024 - present

Holland Casino, Neptunusstraat 71, Hoofddorp, The Netherlands
Information Security Manager
Security advisory, monitoring, defining policies, supplier management, contract management, coordinating penetration tests, incident response, purple teaming. Implemented DAST, SAST.

Jul 2020 - May 2024

Secura, Herikerbergweg 15, Amsterdam, The Netherlands
Technical Project Manager / Team Lead
Managing penetration tests, red team operations, threat model sessions, audits, consultancy. Leading, coaching, and evaluating a team, hosting trainings, workshops, and presentations. Delivering input for strategy to senior management, and redesigning processes to improve productivity.

Feb 2017 - Jul 2020

Deloitte, Gustav Mahlerlaan 2970, Amsterdam, The Netherlands
Senior Consultant / Junior Manager
Penetration testing, security engineering, coordinating peers, hosting trainings, workshops, and presentations, innovation. Mostly working in the public and financial sectors.

Skills

Soft skills

Team player, leading and coaching teams, training colleagues and clients, hosting presentations and workshops.

Competencies

No-nonsense, performance driven, client oriented, empathic, goal oriented, delegating, coaching, analytic, communicative, self-evaluation, innovative.

Information security

DAST, SAST, SCA, OWASP, CIS, Linux, BSD, Windows, Active Directory, PKI, X.509, TLS, HTTPS, DNS, SMTP, password strength analysis, offensive security, Python, (POSIX) shell.

Certification exams passed

CISSP, CISM, and numerous other certifications (CEH, LPIC-2, MCSE, MCSA, MCITP, etc.).

Formal Education

2014 - 2016

MSc in System and Network Engineering - University of Amsterdam, The Netherlands

2011 - 2014

BICT in Network Infrastructure Design - Zuyd University of Applied Sciences, The Netherlands

2007 - 2011

System Administration (VET) - ROC Leiden, The Netherlands

Interests

Swedish language, hiking, road and city trips, home automation, self-hosting, offensive security, open source.