at Sun* Inc.

Cyber Security


  • Perform penetration testing web service systems & apps of the company and customers
  • Update, research security vulnerabilities, and the ways to avoid them.
  • Improve security checks in projects.
  • Develop tools to help automate the security check process.


# Mandatory Skills:

  • Have the knowledge of common software vulnerabilities and how to exploit them.
  • Be proficient in using security testing tools.
  • Have knowledge of cryptographic and encryption systems.
  • Have knowledge of network, protocols, packet structure.
  • Have knowledge of instruction set architecture and common operating systems.
  • Have knowledge of web programming and scripting languages.
  • Have the ability to work persistently and independently.

# Desired Skills:

  • Have experience in working with web frameworks.
  • Have knowledge about exploiting software vulnerabilities (pwn, exploit).
  • Have knowledge of assembly programming.
  • Have knowledge of OSS.
  • Have the ability to communicate in English and write reports.
  • Have knowledge of containerization (Docker, Kubernetes).
  • Have experience in auditing, penetration testing Web services is an advantage.
  • Have experience in national and international CTF competitions is preferable.
  • Have a good understanding of x86 architecture, decompiling, reverse engineering, network packet analysis is an advant.


# Professional, open-minded environment that emphasizes creativity:

  • Work with colleagues with ideas to change society.
  • Respect different perspectives within a team
  • Strong learning culture, promoting individual development
  • A culture of taking risks to experience and thrive

# Focus on individual development

  • Be consulted, accompanied and supported in career development with the career path system (developing in professional or management direction) that has been studied and tested for many years.
  • Be oriented for individual, group and organization goals
  • Be empowered
  • Be supported to define 3-month or 6-month goal (Goal Define Support)
  • Access to company Learning Hub online library with a variety of courses provided by Udemy, LinkedIn,…

# Special care for employees

  • Salary: Negotiate with other allowances (lunch, transportation, beautification, Japanese, IT certificates, etc.)
  • 13th-month salary & performance bonus 
  • Performance review: Twice/year
  • Comprehensive health insurance Sun* Care
  • Seniority Allowance
  • Women care allowance: Women’s physiological leave: 2.5 hours/month; Postpartum leave for female employees with  under 1-year-old children: 1 hour/day
  • Policy to support learning activities, knowledge sharing, cultural exchange (Technology Seminar – Tech Expert, Club: Reading, Japanese, Music Club, …)
  • Annual tourism, quarterly team-building activities.
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