Jiyoon Park

S

Senior Security Engineer, Ironbridge Solutions - AppSec · OWASP · threat modeling

Ironbridge Solutions
Seoul, South Korea · KST (UTC+9)
8+ years experience
UNSW Sydney
English, Korean
Open to work
Messaging unavailable

Overview

Senior Security Engineer at Ironbridge Solutions, focused on application security. Shipped a rewrite that took build times from 45 minutes to under 3. Before that: Commonwealth Bank and HSBC. Most at home with threat modeling and AppSec. I write a small newsletter about application security.

Good reasons to reach out
  • Roles in application security
  • Thoughtful intros to people in my field
  • Second opinions on threat modeling decisions
  • Questions about application security
Please don't message about
  • SEO and link-building offers
  • Offshore staffing offers
  • Recruiters for roles outside my stack
Skills
AppSecIAMthreat modelingOWASP
Open to workLooking for a role
closes in 3 months

Staff Security Engineer roles in logistics - Seoul or remote

Target roles
Staff Security Engineer
Level
Staff / Principal
Industries
E-commerce, AI infrastructure
Work mode
On-site
Available
60 days notice
Work authorization
Authorized to work in South Korea
What I'm looking for
Scope to lead application security work, with a manager who gives direct feedback.
Not interested in
Crypto

8 years in application security. Strongest at OWASP and threat modeling. Available from next month.

Seoul, South Koreaowaspiamappsec
Open

Experience

  1. Senior Security Engineer
    May 2025 - Present
    Ironbridge Solutions · 1 yr 5 mo · Full-time · Seoul, South Korea
    • Shipped 25 launches on the product security team without a rollback.
    • Led the migration of 55 services to threat modeling.
  2. Security Engineer
    Aug 2022 - May 2025
    Commonwealth Bank · 2 yr 9 mo · Full-time · Seoul, South Korea
    • Reduced cloud spend on product security by 25% in two quarters.
  3. Security Engineer
    Jul 2020 - Aug 2022
    HSBC · 2 yr 1 mo · Full-time · Seoul, South Korea
    • Wrote the OWASP service that now handles 15 million requests a day.
  4. Security Engineer
    Oct 2018 - Jul 2020
    LG Electronics · 1 yr 9 mo · Contract · Seoul, South Korea
    • Shipped a rewrite that took build times from 23 minutes to under 6.
    • Shipped 24 launches on the product security team without a rollback.

Projects

Write-up: application security in practice
2022

A long-form guide to application security for people starting out.

References

No references yet.

Education

  1. UNSW Sydney
    BEng, Mathematics
    2014 - 2018

Details

Compensation expectations
What they are targeting for their next role.
Visible to connections
Direct contact details
Direct email and a scheduling link.
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