Open to opportunities

Jovan Marinkovic

@jovanmarinkovic

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Cyber Security Engineer specializing in enterprise security platforms and network protection.

Serbia

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What I'm looking for

I’m looking for remote roles and positions in Serbia or the EU where I can focus on cybersecurity and network security—combining technical presales, post-sales support, and troubleshooting for enterprise security deployments.

I’m a Cyber Security Engineer with 6+ years of experience in cybersecurity, computer networks (routing, switching, firewalling, VPNs) and IT infrastructure. I specialize in enterprise security solution implementation, pre-sales and post-sales support, and client-facing technical engineering.

I’ve deployed and supported WAF/WAAP, DDoS protection, Data Activity Monitoring (DAM), Web Application Security, API Security, IAM, and network security platforms for enterprise clients across multiple industries. I lead technical presentations, product demos, and proof-of-concept deployments, while coordinating with vendors and partners in a VAR/VAD environment.

I’m also hands-on with troubleshooting, incident response, and root-cause analysis to improve time to resolution and service stability. Beyond security engineering, I manage internal IT infrastructure (Linux Administration, Windows Server Administration, VMware vSphere, Proxmox) and document configurations and security policy frameworks, with experience coordinating and mentoring junior engineers.

Experience

Work history, roles, and key accomplishments

Cyber Security Engineer

Manta System d.o.o.

Jul 2020 - Jul 2026 (6 years)

Implemented and supported enterprise cybersecurity solutions including Imperva WAF/WAAP, DDoS protection, data security, IAM, and XDR platforms. Led presales and post-sales engineering, and performed troubleshooting and root-cause analysis for client security infrastructure.

DDoS Protection Data Activity Monitoring (DAM)Web Application Security API Security IAM Vulnerability Management Silverfort SecureVisio XDR Incident Response Root Cause Analysis Troubleshooting Technical Presentations Product Demos Vendor coordination Linux Administration Windows Server Administration VMware VSphere Hyper V

Networking Support Level 2

NCR Corporation (Bintec Elmeg GmbH)

Sep 2019 - Jul 2020 (10 months)

Supported networking operations in a NOC Level 2 environment by handling escalated incidents and change requests. Performed network monitoring, incident response, and troubleshooting for enterprise client infrastructure.

NOC Level 2 Support Network Monitoring Incident Response Network Troubleshooting Routing Switching

Telecommunications Design Engineer

Institute of Transportation CIP

Nov 2018 - Sep 2019 (10 months)

Designed and documented telecommunications and ICT installations for railway and government infrastructure projects.

Telecommunications Design Technical Documentation

IT Intern

College Program Internship

May 2015 - Sep 2018 (3 years 4 months)

Supported computer repair, maintenance, and hardware troubleshooting while gaining foundational IT and networking experience.

Computer Repair Maintenance hardware troubleshooting

Education

Degrees, certifications, and relevant coursework

Cisco Networking Academy

CCNA Security, Computer Systems Networking & Telecommunications

2018 - 2019

Completed CCNA Security coursework with a focus on Computer Systems Networking & Telecommunications via Cisco Networking Academy in Belgrade.

Cisco Networking Academy

CCNA Routing & Switching, Networking

2017 - 2018

Completed CCNA Routing & Switching coursework through Cisco Networking Academy in Belgrade.

Railway College of Vocational Studies

Engineer of Electrical and Computer Engineering, Electrical and Computer Engineering

2015 - 2018

Completed an Engineer of Electrical and Computer Engineering program at Railway College of Vocational Studies in Belgrade. Graduated in September 2018.