Senior Security Engineer, Cyber Defense Platforms

State Street•Boston, MA

22h•Hybrid

About The Position

We are looking for a Senior Security Engineer, Cyber Defense Platforms reporting directly to the Head of Defensive Engineering and Architecture. This role is hands-on and engineering-focused, responsible for hardening enterprise endpoints (workstations and servers) to reduce attack surface across the environment. You will enforce secure configurations, minimize unnecessary services, and support execution control mechanisms in alignment with established security standards and architectural guidance. The role requires close collaboration with Network Security (NetSec) teams to reduce endpoint-to-network exposure (e.g., restricted protocol usage, dependency reduction, and Zero Trust enforcement impacts), as well as with Data Security (DataSec) teams to support endpoint controls that protect sensitive data, prevent unauthorized tools, and ensure alignment with approved software and data protection policies. The team you will be joining is part of the Integrated Defensive Engineering and Architecture (IDEA) - Cyber Defense function, which is critical to reducing enterprise cyber risk and strengthening resilience against modern threats. This role is vital because a significant portion of enterprise risk resides at the endpoint layer, where misconfigurations, excess privileges, and unapproved software are commonly exploited. By systematically reducing attack surface and enforcing strong endpoint controls, this role directly contributes to: Lower likelihood of ransomware and malware propagation, Stronger Zero Trust posture, Improved protection of sensitive and regulated data, and Measurable reduction in cyber risk at scale.

Requirements

Strong security engineering mindset with the ability to translate risk into practical, enforceable technical controls
Deep problem-solving skills and the ability to operate effectively in complex, large-scale enterprise environments
Experience designing and deploying security controls across large scale multi-region environments
Ability to collaborate across security, infrastructure, and application teams while maintaining a strong security posture
Clear communication skills to explain trade-offs, risks, and control impacts to technical and non-technical stakeholders
Bachelor’s degree in Computer Science, Engineering, Cybersecurity, or a related discipline (or equivalent experience)
8+ years of experience in security engineering, endpoint security, or defensive cyber roles
Strong hands-on experience with endpoint security platforms (e.g., EDR, application control, configuration management, hardening frameworks)
Experience with Zero Trust principles, endpoint-to-network control models, or execution control technologies

Nice To Haves

Security certifications such as CISSP, GCED, GSEC, OSCP, or relevant vendor certifications are a plus
Experience working in regulated or large enterprise environments preferred
Ability to influence and drive security improvements without direct authority

Responsibilities

Design, implement, and maintain endpoint hardening standards across workstations and servers, aligned with CIS benchmarks, internal standards, and risk-based guidance
Reduce enterprise attack surface by disabling unnecessary services, features, protocols, and tooling across endpoint environments
Engineer and support execution control mechanisms, including application control, script control, and prevention of unauthorized software
Partner with NetSec teams to reduce endpoint-to-network exposure, including protocol restrictions, dependency mapping, and Zero Trust enforcement considerations
Support DataSec initiatives by enabling endpoint-level controls that protect sensitive data and enforce approved software and data handling policies
Identify and assess unapproved or risky endpoint software, working with stakeholders on remediation, allow-listing, or removal paths
Collaborate with platform, infrastructure, and operations teams to ensure controls are scalable, reliable, and operationally sustainable
Contribute to security architecture documentation, standards, and roadmaps related to endpoint and defense platforms

Benefits

retirement savings plan (401K) with company match
insurance coverage including basic life, medical, dental, vision, long-term disability, and other optional additional coverages
paid-time off including vacation, sick leave, short term disability, and family care responsibilities
access to our Employee Assistance Program
incentive compensation including eligibility for annual performance-based awards
eligibility for certain tax advantaged savings plans
inclusive development opportunities
flexible work-life support
paid volunteer days
vibrant employee networks