Senior Security Engineer

It's fun to work in a company where people truly BELIEVE in what they're doing!

Fullsteam is a leading provider of vertical software and embedded payments technology dedicated to helping businesses flourish by providing their customers with seamless experiences. With a dynamic and growing team of over 1,900 employees, we are committed to driving innovation and delivering best-in-class software and payment solutions that empower small and medium-sized businesses across numerous industries. Our purpose is to help our customers grow their businesses and delight their customers. Join us and be a part of a forward-thinking company that values growth, excellence, and the success of our clients.

​ ​ ​ This position is part of the Fullsteam InfoSec Team which is directly responsible for working with Business Units and Fullsteam Corporate on security initiatives and response. ​ ​

​ ​ At Fullsteam, we're committed to protecting our digital assets and delivering the highest standard of security across our business. As we continue to scale our security programs, we're looking for a passionate security professional to join our Proactive Security team.

​ We're a small, high-ownership team tackling vulnerability and risk exposure across a broad surface; infrastructure, applications, software, AI systems, and external attack surface. This isn't a ticket queue role; you'll have real ownership across the full vulnerability lifecycle, contribute to automation and tooling, and work directly alongside security leadership. If you thrive in a fast-paced environment and want to help shape a growing VM program, we want to hear from you. ​

Primary Responsibilities

• ​ ​ Contribute to and help mature our vulnerability management program, ensuring identified risks are remediated according to SLAs across the enterprise and business units
• ​ Identify and report known vulnerabilities across infrastructure (cloud and on-prem), applications, software, AI systems, and external attack surface
• ​ Monitor external attack surface exposures and contribute to remediation prioritization
• ​ Produce vulnerability metrics, trending reports, and risk summaries for security leadership and business unit stakeholders
• ​ Support alignment of the VM program with industry regulations and standards (PCI-DSS, SOC2, NIST CSF, ISO 27001)
• ​ Collaborate with Security, IT, and BU Engineering teams to drive effective and measurable vulnerability and risk exposure outcomes
• ​ Contribute to risk management and governance functions (e.g., risk register, key metrics, vulnerability reports)
• ​ Develop and contribute to AI-assisted HITL (Human in the Loop) automation and workflows for Proactive Security initiatives
• ​ Collaborate with and learn alongside other Proactive Security team members ​

Skills & Competencies

• ​ ​ 8+ years of Information Technology / Security experience with 2-4+ years of hands-on experience in vulnerability management, attack surface management, or related security functions
• ​ Working knowledge of security tools such as Wiz, Snyk, Qualys, Nessus, MS Defender, or similar platforms
• ​ Experience with vulnerability prioritization frameworks (CVSS, EPSS, risk-based scoring)
• ​ Experience with application security testing concepts and tools (SAST, DAST, IAST, Burp Suite, Postman, GitHub, etc.)
• ​ Basic scripting or programming experience in any language, or a strong desire to develop this skill
• ​ Ability to produce clear, actionable security reporting for both technical and non-technical audiences
• ​ Hands-on experience with AI-assisted security workflows (prompt engineering, agent development, MCP tooling)
• ​ Experience developing or contributing to process documentation
• ​ Ability to work independently in a fully remote environment while managing multiple concurrent priorities
• ​ Experience working in a multi-business-unit or enterprise environment
• ​ Genuine curiosity and desire to grow ​

Minimum Qualifications

• ​ ​ ​ CISSP or equivalent certification (GIAC, CISM, CRISC)
• ​ Bachelor’s degree in cybersecurity or equivalent work experience
• ​ Hands-on Defensive or Offensive security training or work experience
• ​ Project management knowledge, training and/or certifications

Base Salary Range: $122,254 - $130,000 USD

Fullsteam supports an inclusive workplace that values diversity of thought, experience, and background. Fullsteam is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, religion, color, national origin, ancestry, age, physical or mental disability, sex, sexual orientation, gender identity/expression, pregnancy, veteran status, marital status, creed, status with regard to public assistance, genetic status or any other status protected by federal, state, or local law.