Samyuktha Reddy
Chicago,IL
Summary
Cybersecurity Engineer with 5+ years of experience working in email security and secure email gateway platforms. Hands-on experience with Mimecast and Proofpoint, including migrations involving mail flow changes, MX cutover, and policy setup.
In my recent work, I’ve focused on improving email security by reducing phishing attempts, tuning policies to minimize false positives, and supporting smooth migrations with minimal impact to users.
Overview
7
7
years of professional experience
Work History
Security Engineer
Capgemini
USA
01.2024 - Current
- Led Mimecast to Proofpoint migration for 5,000+ users, ensuring smooth transition with no major downtime
- Worked on mail flow setup and changes, including SMTP routing, connectors, and rules in Microsoft 365
- Handled MX record cutover, validating mail flow before and after the switch
- Migrated existing anti-spam and phishing policies and tuned them based on real-time traffic, helping reduce phishing impact
- Configured Proofpoint features like TAP, URL Defense, and Attachment Defense for better threat protection
- Set up TRAP to automatically remove malicious emails from user inboxes
- Reduced false positives by continuously adjusting policies and monitoring email patterns
- Troubleshot issues related to email delivery, delays, and SPF/DKIM/DMARC alignment
- Used message trace and email header analysis to debug routing and authentication problems
- Supported coexistence phase and pilot migrations before full rollout
- Integrated email logs with Splunk / Azure Sentinel to improve visibility into threats
- Created runbooks and basic documentation for migration and support activities
- Provided L2/L3 support for email issues, phishing reports, and delivery failures
- Worked on incident response activities, helping identify and contain potential email-based threats
- Participated in security reviews and assessments to identify gaps and improve configurations
- Helped onboard and guide junior team members on email security practices and tools
- Took part in threat modeling discussions to understand risks and improve overall email security
Associate Security Engineer
CSS Corp
Bangalore, India
05.2019 - 07.2022
- Managed Mimecast Secure Email Gateway (SEG) for enterprise users, handling day-to-day email security operations
- Configured and updated anti-spam, anti-phishing, and BEC protection policies, helping reduce overall threat volume
- Worked on SMTP troubleshooting and mail flow issues, resolving delivery failures and routing problems
- Set up and validated SPF, DKIM, and DMARC, reducing email spoofing and improving authentication
- Investigated phishing and malware emails using email header analysis and message details
- Responded to email security incidents, helping improve resolution time and response efficiency
- Tuned policies to reduce false positives, improving user experience and minimizing business impact
- Monitored email logs and gateway activity to identify unusual patterns and potential threats
- Supported email security migration assessments, including reviewing existing policies and configurations
- Worked with cross-functional teams to troubleshoot issues and improve overall email security posture
- Assisted with phishing investigations, guiding users and providing remediation steps
- Reviewed logs regularly to detect suspicious activity early and prevent escalation
- Contributed to improving security processes and policies based on incident learnings
- Participated in risk assessments and business continuity planning, ensuring minimal impact during outages or failures
Education
Master of Science - Business Analytics
Governors State University
Chicago, IL05-2024
Bachelor’s - Electronics and Communication Engineering
KG Reddy
Hyderabad, India05-2019
Skills
- Email Security & Migration: Mimecast, Proofpoint, SEG, Mail Flow Transition, MX Cutover, Coexistence
- Proofpoint & Threat Protection: TAP, URL Defense, Attachment Defense, TRAP, Anti-Phishing, BEC
- Email Authentication & Routing: SPF, DKIM, DMARC, SMTP, Email Header Analysis, Message Trace
- Security Operations: Incident Response, SIEM (Splunk, Azure Sentinel), Threat Analysis
- Cloud & Compliance: Microsoft 365, Exchange Online, DLP, Email Encryption, Archiving
Timeline
Security Engineer
Capgemini
01.2024 - Current
Associate Security Engineer
CSS Corp
05.2019 - 07.2022
Bachelor’s - Electronics and Communication Engineering
KG Reddy
Master of Science - Business Analytics
Governors State University