Open To Work
Sarah Buliibwa
Concord,MA
Work Preference
Summary
Cybersecurity professional focused on cryptographic risk, identity security, and zero trust architecture. Leads cryptographic inventory assessments, PKI and certificate lifecycle management, and post-quantum readiness analysis while turning technical findings into practical modernization guidance.
Overview
2
2
Certification
8
8
years of professional experience
Work History
Principal Cybersecurity Analyst
Town of Brookline
Brookline, MA
06.2025 - Current
- Led cybersecurity risk initiatives to enhance enterprise identity, access control, and encryption-dependent systems while addressing emerging cryptographic risks.
- Perform cryptographic dependency analysis and enterprise cryptographic inventory assessments to evaluate application and infrastructure readiness for post-quantum migration based on the quantum vulnerability of deployed algorithms.
- Develop risk assessments for long-lived sensitive data and encryption-dependent systems, including exposure to harvest-now, decrypt-later threats.
- Assess crypto-agility by identifying cryptographic assets, trust chains, certificates, authentication dependencies, and legacy technologies requiring modernization.
- Translated quantum computing developments and cryptographic risks into executive-level assessments and strategic recommendations, facilitating informed modernization roadmaps.
IT Security Engineering Consultant
State of New Hampshire
Concord, NH
10.2024 - 06.2025
- Facilitated Zero Trust implementation, minimizing implicit trust dependencies across enterprise environments.
- Built detection engineering rules and SOAR workflows for identity and authentication anomalies, supporting automated security response.
- Collaborated with IAM teams to enhance identity controls, reinforcing secure authentication and enterprise cryptographic resilience.
- Led deployment of CrowdStrike Falcon Complete and Zscaler as part of enterprise endpoint and network security modernization.
Principal Cybersecurity Analyst
Town of Brookline
Brookline, MA
02.2023 - 10.2024
- Implemented MFA and identity protection controls using Duo and CrowdStrike Identity Protection.
- Developed incident response playbooks for credential compromise and identity attacks, ensuring rapid and effective response to security incidents.
- Modernized Splunk Enterprise Security to enhance identity visibility and correlation across enterprise systems.
- Reduced critical vulnerabilities by 30% through remediation of legacy system dependencies.
- Built ransomware and data-protection analytics to strengthen confidentiality measures and mitigate enterprise risk.
Senior IT Analyst
Walmart Advanced Systems & Robotics
Andover, MA
06.2021 - 02.2023
- Designed Zero Trust architecture and network segmentation, improving security posture by 25%.
- Managed enterprise PKI certificate lifecycle and encryption infrastructure, ensuring secure data transmission and compliance.
- Performed security assessments on authentication mechanisms, access controls, and encryption technologies, identifying vulnerabilities and enhancing overall security posture.
- Reduced phishing risk by 90% through identity protection initiatives.
IT Analyst II
Walmart Advanced Systems & Robotics
Andover, MA
01.2019 - 06.2021
- Analyzed network and system logs for anomalous authentication behavior to identify potential security breaches.
- Conducted threat intelligence analysis on credential abuse and identity compromise to enhance security posture.
- Assisted with enterprise monitoring and validation of access-control programs to ensure security compliance.
Education
Master's Degree - Information Technology
Robert Gordon University
United KingdomBachelor of Science - Computer Science
Makerere University
UgandaSkills
- Cryptographic risk assessment
- Cryptographic inventory and dependency analysis
- Post-quantum readiness
- Crypto-agility transition planning
- PKI and certificate lifecycle management
- Enterprise encryption review
- Security architecture review
- Zero trust architecture
- Vulnerability management and remediation
- Identity and access security
- Emerging threat analysis
Personal Information
I'm a cybersecurity professional with a deep passion for emerging technology risk, particularly in quantum computing. As Vice President of the WiCyS Quantum Affiliate, I work with professionals to help them understand the threats that a cryptographically relevant quantum computer will pose and to prepare their organizations for post-quantum migration.
Mentorship is central to my work. I'm committed to supporting people who are building careers in this emerging field and helping them grow with confidence. I also believe cybersecurity awareness should reach everyone, so I educate people of all ages on how to protect their privacy and identity in their everyday lives.
Certification
- Certified Information Security Auditor (CISA)
- Comptia SecurityX Certification
Timeline
Principal Cybersecurity Analyst
Town of Brookline
06.2025 - Current
IT Security Engineering Consultant
State of New Hampshire
10.2024 - 06.2025
Principal Cybersecurity Analyst
Town of Brookline
02.2023 - 10.2024
Senior IT Analyst
Walmart Advanced Systems & Robotics
06.2021 - 02.2023
IT Analyst II
Walmart Advanced Systems & Robotics
01.2019 - 06.2021
Master's Degree - Information Technology
Robert Gordon University
Bachelor of Science - Computer Science
Makerere University