Senior Security Engineer

🏢 Fullsteam · all Fullsteam jobs
📍 United States
💰 USD 122,254 - 130,000 / annual
📅 Posted 2026-06-27 · via Himalayas
🏷 Vulnerability-Management,Cybersecurity,Application-Security,Infosec,Security-Engineering,Senior-Information-Security-Engineer,Senior-Cybersecurity-Engineer,Senior-Security-Operations-Engineer,Senior-Security-Support-Engineer,Security-Engineer,Network-Security-Engineer
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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:

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​​Contribute to and help mature our vulnerability management program, ensuring identified risks are remediated according to SLAs across the enterprise and business units

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​Identify and report known vulnerabilities across infrastructure (cloud and on-prem), applications, software, AI systems, and external attack surface

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​Monitor external attack surface exposures and contribute to remediation prioritization

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​Produce vulnerability metrics, trending reports, and risk summaries for security leadership and business unit stakeholders

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​Support alignment of the VM program with industry regulations and standards (PCI-DSS, SOC2, NIST CSF, ISO 27001)

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​Collaborate with Security, IT, and BU Engineering teams to drive effective and measurable vulnerability and risk exposure outcomes

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​Contribute to risk management and governance functions (e.g., risk register, key metrics, vulnerability reports)

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​Develop and contribute to AI-assisted HITL (Human in the Loop) automation and workflows for Proactive Security initiatives

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​Collaborate with and learn alongside other Proactive Security team members​

Skills & Competencies:

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​​8+ years of Information Technology / Security experiencewith2-4+ years of hands-on experience in vulnerability management, attack surface management, or related security functions

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​Working knowledge of security tools such as Wiz, Snyk, Qualys, Nessus, MS Defender, or similar platforms

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​Experience with vulnerability prioritization frameworks (CVSS, EPSS, risk-based scoring)

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​Experience with application security testing concepts and tools (SAST, DAST, IAST, Burp Suite, Postman, GitHub, etc.)

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​Basic scripting or programming experience in any language, or a strong desire to develop this skill

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​Ability to produce clear, actionable security reporting for both technical and non-technical audiences

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​Hands-on experience with AI-assisted security workflows (prompt engineering, agent development, MCP tooling)

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​Experience developing or contributing to process documentation

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​Ability to work independently in a fully remote environment while managing multiple concurrent priorities

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​Experience working in a multi-business-unit or enterprise environment

- ​Genuine curiosity and desire to grow​

Minimum Qualification

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