Senior Security Engineer

About Crexi Crexi is reimagining commercial real estate with an AI-powered platform built to deliver smarter, more efficient solutions at every stage of the deal lifecycle. From real-time data and market insights generated by Crexi Intelligence, to targeted property marketing and seamless deal management through Crexi PRO, and a transparent, time-bound bidding experience with Crexi Auction— Crexi enables users to evaluate opportunities, maximize exposure, and close with speed and confidence. To date, Crexi has facilitated over $1 trillion in transactions, 8.6 billion square feet leased, and supports a growing community of more than 2 million monthly active users. Crexi’s mission is to catalyze the next generation of commercial real estate through three core pillars: Access, Innovation, and Connection. Crexi’s platform democratizes CRE by providing unprecedented access to market insights and opportunities, accelerates CRE dealmaking with purpose-built technology that enhances speed and transparency; and empowers CRE professionals with a centralized platform designed for real-time collaboration and success. About the Role: The Senior Security Engineer design s , implement s , and maintain s security controls across Crexi's systems. This role serves as a subject matter expert on security tooling and practices, leads remediation of complex vulnerabilities, and shares expertise with less experienced engineers. The Senior Security Engineer partners with engineering and IT to embed security into the full software lifecycle. What You'll Do: Independently designs and implements security controls and tooling across cloud (AWS) and on-prem environments. Leads execution of the vulnerability management program, prioritizing and driving remediation across teams. Serves as subject matter expert on SIEM, SAST/DAST tooling, and IAM practices. Partners with engineering teams to embed security requirements into the software development lifecycle. Leads investigation and response for security incidents, including root cause analysis. Mentors less experienced engineers on security tooling and best practices. Supports audit readiness, gathering and organizing evidence for SOC 2 and ISO 27001. Identifies gaps in existing controls and recommends improvements. Qualifications: Required: Bachelor's degree in Computer Science, Cybersecurity, or a related field, or equivalent practical experience. Required: 5+ years of security engineering experience. Preferred: Experience with SaaS or marketplace platforms. Who You Are: Thrives in a fast-paced, dynamic environment. Exceptional communication skills, with the ability to provide clear and concise information to stakeholders at all levels. Strong analytical skills, with the ability to interpret complex information and identify patterns. Excellent organizational and prioritization skills, with the ability to manage multiple priorities and deadlines. Self-starter who independently owns their own success and demonstrates strong initiative. Responsive, action-oriented, and proactive in identifying and resolving issues. Strong problem-solving and creative thinking skills, with the ability to evaluate options and implement effective solutions. Effective collaborator, with the ability to work cross-functionally and build strong working relationships. Demonstrated ability to handle sensitive and confidential information with the utmost professionalism and discretion. Command of security tooling and domains such as SIEM, SAST/DAST, cloud security (AWS), IAM, vulnerability management, and compliance frameworks (e.g., SOC 2, ISO 27001). Strong security engineering background with experience delivering in a SaaS environment. Working knowledge of agile delivery practices. Why Crexi? Rapidly growing startup with a dynamic work environment Flexible team structure with the ability to progress in career Health, Dental, and Vision insurance Collaborative culture and numerous team activities The anticipated base salary range…