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Senior Security Engineer, Client Security Lead
OneSeven Tech (OST). Secure OneSeven Tech’s internal systems and embed security engineering into client software .
Posted 11/5/2026full-timeRemote • Argentina, Chile, Colombia, Brazil, Uruguay, Peru, MexicoSenior💰 $7,000 - $8,000 per monthWebsite
Core Competencies
Role fitCore Competencies
Use this summary to align your resume positioning with the role.
Demonstrates expertise in securing internal systems and client software through threat modeling, secure design, and incident response. Proficient in integrating security tools into development workflows and delivering repeatable cybersecurity services.
Highest-signal resume keywords
Application SecurityPenetration TestingIncident ResponseEDR/SIEM ImplementationClient-Facing Communication
ATS Keywords
Tailor your resumeApplicant Tracking System Keywords
Tip: use these terms in your resume and cover letter to boost ATS matches.
Hard Skills
Threat ModelingSecure Design ReviewsArchitecture AssessmentsAutomation ScriptingWeb/API VulnerabilitiesIdentity ManagementRemediation TechniquesAI-Assisted Security ToolsPurple TeamingDetection Engineering
Soft Skills
Client-Facing WritingPresentation Skills
Tools & Technologies
SASTSCADASTEDRXDRSIEMSOARInfrastructure-as-CodeSSOMFA
Certifications & Qualifications
Relevant Practical Certifications
Industry Keywords
OWASP ASVSMITRE ATT&CKNIST CSFManaged Security ServicesCybersecurity Service Development
Tech Stack
Tools & technologiesCloudCyber Security
About the role
Key responsibilities & impact- Secure OneSeven Tech’s internal systems and embed security engineering into client software
- Perform threat modeling, secure-design reviews, and architecture assessments
- Integrate SAST, SCA, secret scanning, IaC checks, and DAST into development workflows
- Plan and run authorized penetration tests, attack-surface assessments, and scoped red teaming
- Assess AI-enabled applications and agents for prompt injection, data exposure, excessive permissions, and cross-client data access
- Implement and tune EDR/XDR, SIEM, detections, and SOAR playbooks
- Run threat hunting and purple-team exercises
- Lead incident triage, containment, and recovery while keeping clients updated
- Own internal IT, including onboarding/offboarding, SSO/MFA, access reviews, device management, and SaaS administration
- Act as a primary security contact for clients through discovery calls, scoping, assessment readouts, remediation workshops, and executive reports
- Work with leadership to build repeatable security services, playbooks, templates, scoping, effort estimates, and pricing inputs
- Turn security work into productized cybersecurity services
Requirements
What you’ll need- Hands-on production application and cloud security experience, including web/API vulnerabilities, authorization, identity, secure development, and remediation
- Experience running authorized penetration testing and implementing defensive controls, monitoring (EDR/SIEM), and incident-response workflows
- Practical internal IT administration: SSO/MFA, employee access, endpoints, business SaaS, and user support
- Ability to evaluate and use AI-assisted security tools and agents with proper authorization, containment, output verification, and audit trails
- Automation skills through scripting, APIs, or infrastructure-as-code
- Strong client-facing writing and presentation skills in English
- Ability to turn technical work into repeatable processes, clearly scoped services, and measurable outcomes
- Consulting, multi-client delivery, managed security services, or cybersecurity service development experience (nice to have)
- AI/LLM security, adversary emulation, purple teaming, detection engineering, and SOAR experience (nice to have)
- Brownfield modernization and greenfield product development experience (nice to have)
- Familiarity with OWASP ASVS, MITRE ATT&CK, and NIST CSF (nice to have)
- Relevant practical certifications (nice to have)
- LinkedIn Profile URL required
- GitHub Repository required
- Resume in English
Benefits
Comp & perks- $7000–$8000 USD/month, paid in USD bi-weekly via Deel
- Fully Remote — work from anywhere in Latin America
- Long-term contract — starting with a 6-month contract, then full-time
- Paid PTO
- Referral Program — earn a bonus for referring talent that gets hired