Senior Security Engineer

Location:
Bengaluru, Karnataka, India About GlobalGuard GlobalGuard is a global cybersecurity company focused on delivering modern protection at scale. We help organizations protect critical communications, data, and cloud environments against rapidly evolving cyber threats, without adding complexity or slowing the business down. Our solutions integrate cleanly into existing platforms and are used by organisations operating in regulated and high-risk environments worldwide. MailGuard is GlobalGuard’s based email security SaaS platform. It protects everyday business communications by preventing advanced email-borne threats before they disrupt operations or compromise trust. MailGuard combines Secure Email Gateway (SEG) and Integrated Cloud Email Security (ICES) capabilities to strengthen native protections in platforms such as Microsoft 365. Originally established in 2001, MailGuard has continuously evolved to address zero-day threats and modern social engineering attacks, helping organizations reduce risk and keep email secure and reliable. The prospect As a Senior Security Engineer in our 24/7 Security Operations Centre (SOC), you will act as an escalation point for complex investigations and help improve detection and response workflows. You will lead outbreak investigations, contribute to detection tuning and analytics, and support high-quality customer outcomes. This is a shift-based role. Participate in a rotating 24x7 shift roster once fully trained. What you will do
• Maintain continuous monitoring of email security detections and customer-reported messages, ensuring timely triage and accurate classification




• Perform deep inspection of headers, sender infrastructure, URLs, attachments, authentication results, and mail flow artifacts to determine intent and impact
• Lead major email security incidents and outbreak investigations, including scoping, containment, eradication, and structured handovers across shifts
• Own or contribute to root cause analysis, post-incident reporting, and corrective and preventative actions
• Contribute to the development and refinement of detection rules, filters, and automation workflows to improve efficacy and reduce noise
• Produce trend and predictive analytics across spam and phishing volumes, outbreak indicators, and recurring infrastructure
• Develop and deliver operational reporting on threat trends, detection efficacy, and workload drivers
• Support client communications as required, including incident summaries and evidence-backed remediation guidance
• Maintain high-quality case notes and evidence for traceability and consistent execution across shifts
• Mentor analysts, uplift investigation quality, and drive consistent playbook execution What you will bring
• Working knowledge of core Internet protocols and services, including TCP/IP, SMTP, HTTP, DNS and TLS,



plus strong familiarity with open source tooling and platforms such as Git, Postfix/Sendmail and web servers
• Five-plus years designing and building software tools
• Proficiency in Perl or Python or similar programming language
• Familiarity with Linux
- command line, shell scripting, package management, OS-level troubleshooting
• Docker experience
- building, running, and debugging containers
• Working with document driven or relational databases systems
• Debugging with log analytics, metrics, and other signals
• Creativity and independent problem solving skills
• Understanding machine learning concepts
- model training, evaluation, and deployment
• Familiar with Hugging Face and open-weight LLMs, both encoders and decoders
• Experience with large-scale autoscaling systems requiring high availability, throughput, and low latency
• Translating business requirements into software requirements and shipping high-quality implementations Why GlobalGuard
• Operate at the front line of modern email security and work on problems that matter
• Lead investigations, shape detection improvements, and raise operational maturity
• A practical, outcomes-focused culture that values learning, calm execution, and continuous improvement

How to apply
Apply via LinkedIn with your CV and a short note on your most relevant SOC investigations, the tools you have used, and examples of how you improved detection quality or reduced operational noise. GlobalGuard is an equal opportunity employer. We welcome applicants from all backgrounds.

📌 Senior Security Engineer (Bengaluru)
🏢 GlobalGuard
📍 Bengaluru