Senior Software Engineer (Backend + Network)

JOB DESCRIPTION

VPN/Proxy Investigation & Research:
Continuously monitor and analyze new VPN providers, proxy services, and anonymization tools
Investigate IP allocation patterns, hosting provider behaviors, and network infrastructure changes
Develop and maintain comprehensive databases of known VPN/proxy IP ranges and behavioral signatures
Research emerging threats including residential proxies, mobile proxies, and distributed proxy networks
Monitor darkweb marketplaces and security forums for emerging proxy/VPN trends
Perform deep packet analysis and network traffic pattern recognition
Technical Development:
Develop and maintain Client's system using PHP, Python, and/or Go
Optimize VPN/ Proxy detection algorithms
System Architecture & Operations:
Design scalable infrastructure to handle millions of IP lookups per day
Implement monitoring and alerting systems for detection accuracy and system performance
Analyze production incidents related to false positives/negatives in threat detection
Collaborate with DevOps team on deployment of detection rule updates and model improvements
Customer & Stakeholder Support:
Investigate customer-reported bypass attempts and develop rapid response solutions
Provide technical expertise during customer security consultations
Support sales engineering team with technical demonstrations and proof-of-concepts
Document threat analysis findings and detection methodologies for internal and customer use
Industry Intelligence & Collaboration:
Maintain relationships with cybersecurity vendors, threat intelligence providers, and ISPs
Monitor industry threat reports, security advisories, and academic research
Participate in cybersecurity conferences and forums to stay current with threat landscape
Contribute to open-source security tools and research when appropriate

JOB REQUIREMENT

5+ years of experience with PHP and Python/Go. Experience leading technical teams is a plus
Experience with cybersecurity is particularly valuable.
Ability to research new technologies, deep knowledge in IP network/ CDN technologies, develop specifications, and code
Problem solver and solutions-oriented
Ability to multi-task and schedule, collaborate with teams and follow up with team members on actions
Good communication skills
Good written and spoken English skills
Good understanding of object-oriented programming and design patterns
Good understanding of relational databases (if applicable)
Experience working in a multinational team
Experience using modern version control and project management systems
Teamwork skills
Ability to work a flexible schedule or overtime in the event of emergencies on the project
Striving for professional development
Analytical skills
Quick learner

WHAT'S ON OFFER

Hybrid working mode & Modern office at a prime location in District 1
Professional development budget to support your growth
20 annual leave days, 5 sick leave days
Premium health insurance
Social, unemployment, and health insurance contributions based on full salary
Competitive salary package, 100% salary during the probation period
Attractive bonuses 13th month, business performance, equity plans)
Annual salary performance review
Free parking
Annual company trip & Year-end party
Quarterly team-building activities
In-office snacks and drinks (snacks, coffee, juice, milk, etc.)
International working environment
Weekly yoga classes in the office

CONTACT

PEGASI – IT Recruitment Consultancy | Email: recruit@pegasi.com.vn | Tel: +84 28 3622 8666
We are PEGASI – IT Recruitment Consultancy in Vietnam. If you are looking for new opportunity for your career path, kindly visit our website www.pegasi.com.vn for your reference. Thank you!

Job Summary

Company Type:

Product

Technical Skills:

Backend, Network

Location:

Ho Chi Minh - Viet Nam

Working Policy:

Hybrid

Salary:

Negotiation

Job ID:

J01940

Status:

Active

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