{"schemaVersion":"jobsearcher.job.v1","id":"dcb5aec3dfd8da5997bf0547","url":"https://jobsearcher.com/jobs/dcb5aec3dfd8da5997bf0547","canonicalUrl":"https://jobsearcher.com/jobs/dcb5aec3dfd8da5997bf0547","title":"Staff Security Engineer - Application Security","description":"Job DescriptionStaff Security Engineer - Application SecurityColossus Technologies Group is working with a high-tech fintech company to hire a Staff Security Engineer focused on building the next generation of its Application Security program.This isn't a traditional AppSec role centered around running scanners, reviewing findings and acting as a security gate for engineering.We're looking for a security engineer who builds.The team is working on engineering problems around:Building AI-powered security agents that can review architecture and code, identify vulnerabilities and help automate security reviewsDeveloping the next generation of SAST and DAST capabilities, combining traditional security analysis with AI to find vulnerabilities that existing tooling missesBuilding automated systems that can move from vulnerability discovery into validation, prioritization and eventually remediationCreating security tooling that gives developers useful feedback directly inside their existing development and CI/CD workflowsAutomating threat modeling and secure design reviews so Product Security can scale alongside a fast-moving engineering organizationSecuring AI and agentic applications against emerging attack paths including prompt injection, tool abuse, excessive permissions, data leakage and unsafe agent behaviorBuilding controls around software supply chain, dependencies and the path from source code through productionPerforming deep technical security research against applications, APIs and cloud-native systems, then turning what is learned into repeatable tooling and engineering controlsWe're interested in engineers who have built things like security scanners, static or dynamic analysis systems, vulnerability research platforms, automated threat-modeling systems, AppSec developer tooling, security agents or other security products.Strong software engineering ability is important. Python, Go or similar backgrounds are relevant, along with the ability to read and reason about production code across different languages and architectures.The ideal person has enough offensive and Application Security depth to find difficult vulnerabilities themselves, but would rather solve the problem at scale by building a system that can find the next thousand.Remote - United StatesStaff LevelFull-timeCompetitive base + bonus + equity","company":"Colossus Technologies Group","rawCompany":"colossus technologies group","city":"United","state":"WV","isRemote":false,"isActive":false,"createdAt":"2026-09-30T11:54:24.412Z","occupations":[{"code":"15-1299.05","title":"Information Security Engineers","slug":"information-security-engineers"},{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"}],"industries":[{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"},{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Staff Security Engineer - Application Security","description":"Job DescriptionStaff Security Engineer - Application SecurityColossus Technologies Group is working with a high-tech fintech company to hire a Staff Security Engineer focused on building the next generation of its Application Security program.This isn't a traditional AppSec role centered around running scanners, reviewing findings and acting as a security gate for engineering.We're looking for a security engineer who builds.The team is working on engineering problems around:Building AI-powered security agents that can review architecture and code, identify vulnerabilities and help automate security reviewsDeveloping the next generation of SAST and DAST capabilities, combining traditional security analysis with AI to find vulnerabilities that existing tooling missesBuilding automated systems that can move from vulnerability discovery into validation, prioritization and eventually remediationCreating security tooling that gives developers useful feedback directly inside their existing development and CI/CD workflowsAutomating threat modeling and secure design reviews so Product Security can scale alongside a fast-moving engineering organizationSecuring AI and agentic applications against emerging attack paths including prompt injection, tool abuse, excessive permissions, data leakage and unsafe agent behaviorBuilding controls around software supply chain, dependencies and the path from source code through productionPerforming deep technical security research against applications, APIs and cloud-native systems, then turning what is learned into repeatable tooling and engineering controlsWe're interested in engineers who have built things like security scanners, static or dynamic analysis systems, vulnerability research platforms, automated threat-modeling systems, AppSec developer tooling, security agents or other security products.Strong software engineering ability is important. Python, Go or similar backgrounds are relevant, along with the ability to read and reason about production code across different languages and architectures.The ideal person has enough offensive and Application Security depth to find difficult vulnerabilities themselves, but would rather solve the problem at scale by building a system that can find the next thousand.Remote - United StatesStaff LevelFull-timeCompetitive base + bonus + equity","datePosted":"2026-09-30T11:54:24.412Z","dateModified":"2026-09-30T11:54:24.412Z","hiringOrganization":{"@type":"Organization","name":"Colossus Technologies Group","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"United","addressRegion":"WV","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"dcb5aec3dfd8da5997bf0547"},"url":"https://jobsearcher.com/jobs/dcb5aec3dfd8da5997bf0547"}}