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Sr Cybersecurity Network Ops Analyst



This job is no longer accepting applications

See open jobs at Celeno.
IT, Operations
Athens, Greece
Posted on Tuesday, August 8, 2023



  • Leverage aggregated cyber threat intelligence, log, network flow, and anomaly data for analysis, research, and the identification of potential compromise within infrastructure or applications.
  • Identify IT security gaps and provide technical and procedural recommendations that will reduce exposure to cyber-risks.
  • Research and recommend new methods and applicable technologies to mitigate risk and protect information assets.
  • Research new threats, attacks, and vulnerabilities that may affect IT infrastructure, and ways to identify and protect against them.
  • Investigate potential cyber-attacks and intrusion attempts.
  • Create detailed security incident reports, including root cause analysis and actions to mitigate such risks in the future.
  • Support follow-on actions, such as coordinating with other organization teams to facilitate remediation of the alert/event/incident and close out the investigation.
  • Support compliance remediation efforts, impact analysis and documentation.
  • Maintain SOX ITGCs ensuring controls are designed and operating effectively.
  • Provide risk consultation to requests for contractors, evaluations, and questionnaires.
  • Promote security education awareness training to all employees.
  • Maintain information security policies, procedures, standards.
  • Provide support for day-to-day operational tasks associated with management of an enterprise network environment, including securing, and operating all facets of LAN, WAN, and WLAN services.
  • Manage projects to include solution design, development of plans, project schedules, and communication of status updates on project milestones.
  • Installing, configuring, and supporting network equipment including routers, switches, firewalls, and access points.
  • Investigate solutions to provide continual system improvements and optimization.
  • Troubleshoot, diagnose, analyze, and resolve hardware, software, and other network and performance issues.
  • Provide support to remote sites, working with site personnel to identify and resolve network related issues.
  • Provide on-site support for site changes when additional resources are required.
  • Occasional project-based travel and flexibility to work outside of local business hours.




  • Must be a team player with desire to learn.
  • Bachelor’s degree in Computer Engineering, Computer Science, IT Security, or equivalent experience required.
  • 3+ years’ experience supporting information security analysis and multi-site IP-based network environment participating in design, implementation, maintaining and troubleshooting aspects of the network.
  • Strong knowledge of cybersecurity frameworks such as ISO 27001, NIST CSF, CIS, SOX ITGC.
  • Strong knowledge of:
      • Windows and Linux operating system
      • TCP/IP and related Internet and network protocol
      • Network architecture and associated devices (routers, switches, WAPs, etc.)
      • Next-generation Firewalls, UTM, IPS, IDS, DLP, HIPS, VPN, TLS/SSL, and RAS
      • PCAP analysis for troubleshooting and traffic identification
  • Working knowledge of SIEM and log management tools.
  • Able to work effectively with peers in a team environment, while also working in a self-directed manner on multiple tasks and projects.
  • Must be organized, process-minded, and deadline and detail-oriented.
  • Demonstrate sound troubleshooting methodologies and strong analytical and problem-solving skills.
  • Must possess good written and verbal communication skills needed to present to all levels of the organization.
  • Ability to work with all levels of staff within and outside of IT and outside the organization.
  • Ability to think through problems and visualize solutions.


Interpersonal Skills:


  • Must be a team player with desire to learn and grow.
  • Ability to communicate with others in a team friendly environment.
  • Must display ability to work with a team harmoniously.
  • Looking for a long-term team player to join our team.




  • Industry security certifications such as CISSP, CISM, GCIH, GCIA, GPEN.
  • Industry network certifications such as CCNA, CCNP, Security+.
  • Scripting language experience (i.e., python, expect, etc., for network automation and API integration). Ansible experience is a plus.
  • Understanding WAN architectures, including Ethernet, site-to-site VPN and packet switching technologies such as MPLS. Use troubleshooting skills to isolate WAN related problems and work with service providers on resolution.
  • Experience with wireless LAN hardware, configuration, security, and support aspects within an enterprise environment.
  • SD-WAN and SDN experience.


Renesas Electronics Corporation (TSE: 6723) empowers a safer, smarter and more sustainable future where technology helps make our lives easier. A leading global provider of microcontrollers, Renesas combines our expertise in embedded processing, analog, power and connectivity to deliver complete semiconductor solutions. These Winning Combinations accelerate time to market for automotive, industrial, infrastructure and IoT applications, enabling billions of connected, intelligent devices that enhance the way people work and live. Learn more at renesas.com. Follow us on LinkedIn, Facebook, Twitter, YouTube, and Instagram.


Renesas’ mission, To Make Our Lives Easier, is underpinned by our company culture, TAGIE. TAGIE stands for Transparent, Agile, Global, Innovative and Entrepreneurial. Our goal is to embed this unique culture in everything we do to succeed as a company and create trust with our diverse colleagues, customers and stakeholders.


We are committed to creating a diverse culture where everyone is included and feels a sense of belonging. For more information, please read our Diversity & Inclusion Statement.

This job is no longer accepting applications

See open jobs at Celeno.