Network Security Engineer Job at MainOne

MainOne’s success is built on having talented and highly proficient people within their respective fields as the driving force behind our business.

A job in MainOne is different from any other you have had. With joining MainOne you’ll be challenged, inspired and proud as you become a part of something big.

MainOne Cable is recruiting to fill the vacant position below:

Job Title: Network Security Engineer
Department Technical
Reporting Line IP Security Specialist


  • The Network Security Engineer will ensure that applications and infrastructure are implemented to the highest security standards, thus maintaining and enhancing customer trust.
  • He will participate in security audits, security log analysis, DDOS protection implementation,risk analysis, vulnerability testing and security reviews on all MainOne IPNGN infrastructures.
  • The Network Security Engineer’s responsibilities shall also include:
  • The specific responsibilities shall include to:
  • Identify security issues and risks, and develop mitigation plans while working closely with the information security officer, CISO, ISMS Manager and Risk Managers.
  • Configure, harden, & install Cisco firewalls, routers & switches.
  • Secure network by enforcing policies; defining and monitoring access
  • Manage multiple perimeter firewalls to include application level firewalls.
  • Implementing security engineering technologies and supporting processes for strategic projects.
  • Implementing and optimizing Distributed Denial of Service (DDoS) protection solution/techniques.
  • Evaluating new and emerging DDOS threats.
  • Participate in tier 2 and tier 3 security operation support.
  • Participate in incident handling.
  • The responsibilities defined above span across the business in Nigeria, Ghana and International markets.
  • Contacts: You will be required to work closely with the: IP Team


  • Bachelor Degree in a relevant discipline.
  • Minimum of 4 years experience with 2-3 years experience in security logs analysis and interpretation.
  • Must have at least one of the following certificates: CCNA (Security), CCNP, CCNP (Security), CISSP, Cisco Cybersecurity Specialist, CCIE Security.

Competencies Required 

  • Knowledge of network routing protocols e.g. EIGRP, OSPF, BGP.
  • Strong knowledge of security protocols and implementations: TCP/IP, IPSEC VPN, SSLVPN, etc.
  • Strong experience and detailed technical knowledge in security engineering, system and network security, authentication and security protocols, cryptography, and application security
  • Knowledge of network and web related protocols (e.g. TCP/IP, UDP, IPSEC, HTTP,HTTPS, routing protocols).
  • Strong understanding of a process driven environment
  • Must have at least one of the following certificates: CCNA (Security), CCNP, CCNP (Security), CISSP, Cisco Cybersecurity Specialist, CCIE Security.
  • Strong written and verbal skills.
  • Strong customer service experience and orientation required.
  • Availability to work extra hours in times of emergency and specialized project deliveries
  • Understanding and manage the pressure of a 24×7 customer support environment.
  • Strong analytical and problem solving skills.
  • Ability to work both independently and as part of a team to diagnose, troubleshoot, and resolve systems problems and issues.

How to Apply
Interested and qualified candidates should Click Here to Apply

Note: When the page opens, click on “Network Security Engineer”

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