Onur Codur
Verified Expert in Engineering
IT Security Developer
Ankara, Turkey
Toptal member since November 14, 2022
Onur is an enthusiastic and passionate security engineer who likes to work predominantly as a security architect to provide strategic direction to the development and operational teams to identify security weaknesses in their solution designs and drive the adoption of security best practices. He believes that security is one of the key driving factors in maintaining the reputation and quality of an organization and its services.
Portfolio
Experience
- Network Security - 8 years
- Security Architecture - 6 years
- Firewalls - 5 years
- Linux - 5 years
- Web Application Firewall (WAF) - 3 years
- Cryptography - 3 years
- Web App Security - 3 years
- Embedded Security - 3 years
Work Experience
Cybersecurity Chief Engineer
Turkish Aerospace Industries
- Performed threat modeling and risk assessment to identify vulnerabilities to develop mitigations using well-known cybersecurity control standards like NIST 800-53, ISO27002, and the Open Web Application Security Project (OWASP).
- Designed security architecture of systems based on security controls, including designing cryptography architecture, PKI mechanisms, and access controls.
- Generated security requirements, allocating them to the related subsystems of products and performing verification and validation activities of them.
- Managed a security team, defining roles and responsibilities of team members and assigning tasks.
- Acted as the technical SME for cybersecurity to other design teams.
Cybersecurity Engineer
Ministry of Trade Republic of Turkey
- Performed information security operations with firewalls, +SDWAN features, load balancer, web application firewall, web gateway proxy, IPS/IDS, antivirus, and mail security gateway.
- Designed secure IT and network infrastructure of newly-developed projects according to security by design, security by default, and defense-in-depth concepts.
- Followed security audit findings related to the area of responsibility and took the necessary actions.
Security Systems Management Specialist
Türk Telekom
- Performed security operations with firewalls, firewall orchestration tools, web gateway proxies, remote access VPN devices, monitoring, and network analysis tools.
- Designed secure infrastructure for telecommunication core systems like multiprotocol label switching (MPLS), long-term evolution (LTE), and digital subscriber line access multiplexer (DSLAM), serving millions of customers.
- Prepared RFPs and performed PoCs with related vendors to finally integrate suitable solutions.
Network Security Engineer
Vision Solutions
- Developed network access control software by a company installed on large-size IT infrastructures.
- Collected feedback about network access control software from customers and enhancements and solutions provided to the R&D team.
- Trained customers and resellers on cyber security products.
Network Engineer
Vodafone Turkey
- Managed network devices operating in Vodafone's network infrastructure, which required %99.9 availability.
- Implemented and optimized routing protocols. Also troubleshot data network issues on LAN and WAN.
- Diagnosed and fixed data network issues on LAN and WAN.
Project History
Vulnerability Scanning Tool
Education
Master's Degree in Cybersecurity
Middle East Technical University - Ankara, Turkey
Bachelor's Degree in Electronic and Communication Engineering
Yildiz Technical University - Istanbul, Turkey
Certifications
Certified Information System Security Professional
ISC2
Project Management Professional (PMP)
Project Management Institute (PMI)
Cisco Certified Network Professional
Cisco
Skills
Tools
VPN, Wireshark
Languages
C++, SQL, Python 3
Paradigms
Penetration Testing, Cisco Certified Network Associate Routing & Switching, DDoS
Platforms
Linux, Amazon Web Services (AWS), Windows, Burp Suite, Kali Linux
Other
Network Security, TCP/IP, Networks, Security Architecture, IT Security, Systems Engineering, Cryptography, Firewalls, Web App Security, Web Application Firewall (WAF), IDS/IPS, Secure Software Development Lifecycle (SSDLC), Malware Analysis, ISO 27001, Privacy, General Data Protection Regulation (GDPR), IoT Security, GSM, Electronic Circuit Design, WAN, LAN, Routing, Multiprotocol Label Switching (MPLS), CCNP, Secure Email Gateways (SEGs), Checkpoints, Fortinet Firewall Configuration, SSL Certificates, IPsec, PKI, Embedded Security, Risk Assessment, NIST, DO-326, DO-356, Web Security, Security Governance, Incident Response, IT Project Management, Cisco, Cisco Routers, Cisco Switches, IP Routing, Supply Chain, Security
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