Middle/Senior Pen-Test Engineer

LOCATION: Hanoi/HCMC

JOB DESCRIPTION 

• Plan and execute penetration tests across our web applications, mobile apps, APIs, backend services, cloud infrastructure and internal networks
• Test authentication, authorization and session management flows, including digital onboarding, eKYC, transaction authorization and multi-factor journeys
• Assess business logic vulnerabilities specific to banking products: account opening, deposits, lending, card issuance, limits, fees and rewards
• Write clear, reproducible reports with proof of concept, realistic risk ratings and practical remediation guidance
• Work directly with engineering teams to validate fixes and help them understand the root cause, not just the symptom
• Contribute to threat modelling and secure design reviews for new features and integrations
• Perform secure code reviews and help improve SAST, DAST, SCA and secret scanning coverage in our CI/CD pipelines
• Support client-led and third-party penetration tests, respond to findings, and prepare evidence for client security assessments and regulatory reviews
• Build internal tooling, test harnesses and attack playbooks to make testing repeatable
• Track emerging threats relevant to digital banking and translate them into new test cases
• Contribute to red team exercises and purple team collaboration with the detection and response side

REQUIRED SKILLS AND EXPERIENCE 

• 3+ years of hands-on penetration testing or offensive security experience
• Strong track record testing web applications and APIs (REST, GraphQL, gRPC) against OWASP Top 10 and beyond
• Mobile application security testing experience on iOS and Android, including reverse engineering, runtime manipulation and bypassing client-side controls
• Cloud security testing experience (AWS, Azure or GCP): IAM misconfiguration, privilege escalation paths, exposed services, container and Kubernetes security
• Solid understanding of network protocols, TLS, and internal network attack techniques
• Proficiency with tools such as Burp Suite, Nmap, Metasploit, Frida, Objection, MobSF, BloodHound, Nuclei and similar
• Scripting ability in Python, Go, Bash or similar to build custom exploits and automation
• Ability to read code and identify vulnerabilities at the source level (Java, Kotlin, Go, TypeScript, Swift or similar)
• Excellent report writing and the ability to explain risk to both engineers and non-technical stakeholders
• Strong ethics, discretion and judgement when handling sensitive findings and production systems

Nice to have

• Experience testing banking, payments or fintech systems
• Familiarity with OWASP ASVS, MASVS, SAMM, MITRE ATT&CK and PTES
• Knowledge of regulatory and compliance frameworks such as MAS TRM Guidelines, PCI DSS, ISO 27001, SOC 2, or central bank security requirements in APAC and the Middle East
• Experience with payment and card security: HSMs, key management, 3-D Secure, tokenisation, card processor integrations
• Red team, adversary simulation or social engineering experience
• Detection engineering or DFIR exposure
• Published CVEs, bug bounty track record, CTF results, security research or conference talks
• Certifications such as OSCP, OSWE, OSEP, OSCE, CREST CRT or CCT, GPEN, GWAPT, GMOB, or CISSP

BENEFITS 

• Salary: Up to negotiation 
• Probation salary is 100% of official salary 
• 13th-month salary and performance review twice a year 
• Bonus for special occasions each year (Labor Day, National Day, Solar New year, Lunar New Year) 
• Project bonus 
• Employee’s professional certification and training allowances subject to company regulations 
• Health Care Insurance  
• Annual Health Assessment 
• Social, health and unemployment insurance following government policy 
• Enjoy company summer trips and other team building activities held monthly and quarterly 
• Professional, creative and dynamic working environment  
• Work five days per week with flexible check-in time 

CONTACT

• Send CV to: [email protected]
• Hotline: +842466666100 (Recruitment Team)
• Facebook GEM Careers: https://www.facebook.com/tuyendungGEM
• Linkedin GEM Careers: https://www.linkedin.com/company/gem-careers-hiring/