Cyber Security Operation Center (CSOC) Analyst

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At Symphony Communication Public Company Limited, we help organizations stay secure in an increasingly connected world. Through our managed cybersecurity and digital connectivity services, we protect enterprise customers with reliable, proactive, and innovative security solutions.

We are looking for a motivated CSOC Analyst to monitor and analyze cybersecurity events, investigate security alerts, and coordinate incident response with customers, internal teams, and technology partners. You'll play a key role in protecting customers' critical infrastructure while working with enterprise security technologies in a 24x7 Security Operations Center.

If you're passionate about cybersecurity, threat detection, and continuous learning, join us and help safeguard the digital future.

Key Responsibilities

• Monitor customers' security infrastructure and security events through Security Operations Center (SOC) monitoring platforms on a 24x7 shift basis.
• Identify, classify, prioritize, and perform initial analysis of security alerts and incidents based on severity and business impact.
• Investigate security events by reviewing logs, alerts, endpoint activities, and network traffic to determine potential threats.
• Escalate security incidents to internal security teams or technology vendors in accordance with established incident response procedures.
• Coordinate with customers, vendors, and internal teams throughout the incident lifecycle until resolution.
• Track incident progress and ensure timely resolution in accordance with SLA commitments.
• Document investigation findings, incident timelines, identified causes(Root Cause), and recommended corrective actions.
• Support root cause analysis and document investigation findings, incident timelines, and corrective actions.
• Provide regular incident status updates to customers and stakeholders.
• Maintain accurate operational records and update knowledge base documentation.
• Participate in shift handover to ensure continuity of monitoring activities.
• Support continuous improvement initiatives to enhance monitoring effectiveness and operational efficiency.
• Perform other duties as assigned.

What We're Looking For

• Bachelor’s degree in Computer Engineering, Computer Science, Information Technology, Cyber Security, Telecommunications, or related fields.
• 1–3 years of experience in SOC, CSOC, Network Operations Center (NOC), IT Operations, or CyberSecurity.
• Basic understanding of networking concepts (TCP/IP, DNS, Routing, Firewall, VPN).
• Knowledge of cybersecurity concepts such as SIEM, IDS/IPS, Endpoint Security, Malware, and Incident Response.
• Experience using security monitoring tools is an advantage (e.g., Microsoft Sentinel, Splunk, QRadar, FortiSIEM, ArcSight).
• Relevant certifications such as Security+, SC-200, CEH, CySA+, or vendor-specific SIEM certifications are an advantage.
• Familiarity with Windows/Linux logs, Active Directory, cloud environments, and common security log sources.
• Basic knowledge of threat intelligence, IOC analysis, and the MITRE ATT&CK framework.
• Strong analytical and troubleshooting skills.
• Good communication and coordination skills.
• Able to work rotating shifts in a 24x7 operation.
• Good command of written and spoken English. A valid TOEIC score will be considered an advantage.

Why Join Symphony?

At Symphony, you'll have the opportunity to:

• Protect businesses from evolving cyber threats by supporting enterprise customers with real-time security monitoring and incident response.
• Work with cutting-edge cybersecurity technologies, including SIEM, EDR/XDR, SOAR, Firewall, WAF, Anti-DDoS, Cloud Security, and Threat Intelligence platforms.
• Gain hands-on experience in a 24x7 Cyber Security Operations Center (CSOC), collaborating with experienced cybersecurity professionals and global technology partners.
• Strengthen your expertise in threat detection, incident investigation, digital forensics, and cyber defense while supporting mission-critical security operations.
• Accelerate your cybersecurity career through continuous learning, industry-recognized certifications, and exposure to enterprise security projects.
• Enjoy competitive compensation, comprehensive employee benefits, and long-term career growth with one of Thailand's leading telecommunications and digital connectivity providers.

What We Offer

• Competitive salary and attractive performance-based incentives
• Annual bonus based on company and individual performance
• Comprehensive medical insurance and annual health check-up
• Professional learning and career development opportunities
• Collaborative and inclusive working environment
• Opportunities to work on regional and international business projects

About Symphony Communication

Symphony Communication Public Company Limited is a leading provider of telecommunications and digital connectivity solutions in Thailand. We deliver reliable network infrastructure and innovative communication services that enable enterprises, carriers, and global partners to stay connected across Thailand and the region.

Driven by innovation, customer focus, and operational excellence, we continue to invest in advanced technologies and talented professionals who are passionate about shaping the future of digital connectivity.

Ready to Make an Impact?

If you're passionate about building strong customer relationships, driving business growth, and working with leading organizations across the telecommunications industry, we'd love to hear from you.