Cloud Security Engineer

Cloud Security Engineer

The successful candidate will be a subject matter expert with hands‑on experience in a wide range of cloud technologies, tools and methodologies. The role is suited for an experienced Cloud Engineer with proven understanding in enterprise security and will focus on building toolsets and processes to support the Information Security Program (ISP). The team fosters a collaborative environment and is building a best‑in‑class program to partner with the business to protect the Firm's information and computer systems. Millennium is a complex and robust technical environment and securing the Firm from external and internal threats is a top priority.

Principal Responsibilities

• Contribute to the vision, strategy, and drive execution for integrated security controls across Software-as-a-Service (SaaS), Platform-as-a-Service (PaaS), Infrastructure-as-a-Service (IaaS) and for Millennium's Amazon Web Services (AWS) and Google Cloud Platform (GCP) efforts.
• Able to demonstrate clear understanding of current risks and threats to Cloud infrastructure and/or IT infrastructures at technical and managerial levels.
• Drive Identity and Access Management (IAM), configuration management, and monitoring strategy for AWS and GCP platforms.
• Provide security consultancy and engineering support for cloud security solutions including analysis and development of Amazon, Google, and other security solutions.
• Provide architecture assurance on Cloud security initiatives and compliance of existing security standards interfacing with infrastructure and development teams.
• Maintain the security infrastructure tools that are built on the Cloud platform, providing stability and policies and procedures.
• Support the development and delivery of a comprehensive ISP for the entire organization.
• Actively monitor new and emerging cloud security technologies, trends, issues, and solutions and assess their applicability to MLP's cloud strategy.
• Perform periodic and on‑demand system audits and vulnerability assessments of systems, internal applications and Cloud services to identify security vulnerabilities.
• Monitor compliance with the organization's information security policies and procedures among employees, contractors and third parties.
• Manage remediation efforts for any gaps reported in audits or recommended process improvements.
• Collaborate with IT management, Legal, Human Resources and Compliance departments to manage security vulnerabilities and investigations.
• Provide support to Security and other technical operations staff to ensure smooth turnover from Engineering to Production.
• Liaison with key stakeholders to create and enforce policy including Technology organization, Trading units, Legal, Internal Audit, and Compliance.
• Leads the effort to ensure security compliance in accordance with regulatory security standards required by appropriate governing bodies.
• Develop and maintain documentation of all Security products including specific tools, technologies and processes.
• Apply emerging AI capabilities to improve security posture management, automate repetitive workflows, and scale threat analysis across multi‑cloud infrastructure.

Qualifications/Skills Required

• Bachelor's degree in Computer Science or Engineering preferred. 5+ years experience working in a technical role with a minimum of 3+ years experience focusing on information security in the financial industry (preferred).
• Solid understanding of AWS and GCP security controls, and best practices to secure cloud resources in a hybrid environment.
• Deep expertise with Identity and Access Management (IAM) in AWS & GCP.
• Proficiency in software development and scripting in Python is required.
• Hands‑on experience in building security guardrails in AWS & GCP to allow for innovation without compromising security posture.
• Demonstrated expertise in Infrastructure as Code tooling (Terraform / AWS CloudFormation).
• Strong knowledge and experience in a variety of technologies including: Linux, Networking, Databases, and Storage.
• Strong knowledge of Information security controls.
• Knowledge of software development security and cryptography.
• Possess a passion for Information Security and Technology.
• Able to prioritize in a fast moving, high pressure, constantly changing environment.
• An aptitude for critical thinking and problem solving.
• Ability to communicate and collaborate across teams.
• Comfortable working with geographically dispersed team.
• Familiarity with applying generative AI and/or machine learning techniques to security (Claude, ChatGPT, Gemini, etc.).
• AWS/GCP security related certification is a plus.

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