Senior Analyst / Lead, Cyber Defence (SOC)

Responsibilities

• You will also lead offensive security initiatives including penetration testing and red team simulations, enabling proactive detection, rapid response, and continuous improvement of Circles' security resilience.
• SOC Platform Engineering
• Architect, deploy, and optimize SIEM/SOAR platforms (e.g., Splunk, ELK, QRadar) with scalable log ingestion, enrichment, and correlation pipelines.
• Build automation frameworks and SOAR playbooks to streamline alert enrichment, response orchestration, and remediation workflows.
• Integrate custom telemetry and hybrid-cloud data sources to enhance SOC observability and adaptive threat detection.
• Develop Python/Bash-based automation and AI/ML-driven logic for intelligent alert triage, noise reduction, and continuous detection improvements.
• Continuously refine data normalization, parsing, and correlation logic to maximize SIEM performance and response efficiency.
• Penetration Testing & Threat Simulation
• Lead periodic penetration testing, red teaming, and adversary emulation exercises to identify and exploit vulnerabilities across infrastructure, applications, and cloud systems, assessing detection and response effectiveness.
• Close the detection gaps, enhance response workflows, and perform post-exploitation analysis, developing custom exploit chains for advanced testing scenarios.
• Incident Response & Continuous Improvement
• Support SOC operations during high-severity incidents, leveraging automation, engineering improvements, and proactive collaboration with internal and client teams for rapid containment and resolution.
• Develop and maintain threat detection content, runbooks, and correlation logic aligned with the MITRE ATT&CK framework to strengthen detection and response capabilities.
• Drive continuous improvement of SOC tooling and automation, evaluating and integrating emerging technologies, open-source frameworks, and advanced analytics.
• Act as a key client-facing representative, providing technical insights, incident summaries, and security recommendations that translate complex SOC findings into actionable outcomes.
• Flexibility :
• Ability to work in 24x7 environments as per business needs.
• Circles is committed to a diverse and inclusive workplace. We are an equal opportunity employer and do not discriminate on the basis of race, national origin, gend

Requirements

• Bachelor's degree in Computer Science, Engineering, or related field (or equivalent experience).
• 6+ years of hands-on SOC Platform engineering, Incident management and PEN testing experience.
• Experience with SIEM tools (Graylog, Splunk, ELK, Rapid7, LogRhythm, QRadar).
• Relevant certifications (GCIH, GCIA, Splunk/QRadar) are a plus.

Additional Information

Founded in 2014, Circles is a global technology company reimagining the telco industry with its innovative SaaS platform, empowering telco operators worldwide to effortlessly launch innovative digital brands or refresh existing ones, accelerating their transformation into techcos. Today, Circles partners with leading telco operators across multiple countries and continents, including KDDI Corporation, Etisalat Group (e&), AT&T, and Telkomsel, creating blueprints for future telco and digital experiences enjoyed by millions of consumers globally. Besides its SaaS business, Circles operates three other distinct businesses: Circles.Life : A wholly-owned digital lifestyle telco brand based in Singapore, Circles.Life is powered by Circles ' SaaS platform and pioneering go-to-market strategies. It is the digital market leader in Singapore and has won numerous awards for marketing, customer service, and innovative product offerings beyond connectivity. Circles Aspire : A global provider of Communications Platform-as-a-Service (CPaaS) solutions. Its cloud-based Experience Cloud platform enables enterprises, service providers and developers to deliver and scale mobile, messaging, IoT, and connectivity services worldwide. Jetpac : Specializing in travel tech solutions, Jetpac provides seamless eSIM roaming for over 200 destinations and innovative travel lifestyle products, redefining connectivity for digital travelers. Jetpac was awarded Travel eSIM of the Year. Circles is backed by renowned global investors, including Peak XV Partners (formerly Sequoia), Warburg Pincus, Founders Fund, and EDBI (the investment arm of the Singapore Economic Development Board), with a track record of backing industry challengers. Standard Title - Senior Analyst / Lead, Cyber Defence (SOC) Role - Senior Analyst / Lead SOC Analyst (Security Platform Engineering & Automation)

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