Digital Product Studio for Startups and Enterprises.
Security Analyst – MCP & Application
Location
Argentina
Posted
9 days ago
Salary
$4K - $5.5K / month
Seniority
Senior
Job Description
Security Analyst – MCP & Application
OneSeven Tech (OST)
• Own the security posture of the MCP infrastructure: define and implement JWT-based authentication, manage secrets, and establish controls for tool-use and agent interactions • Identify and remediate prompt injection risks, unauthorized tool invocations, and privilege escalation vectors in the agentic layer • Review and harden AWS infrastructure configurations: IAM policies, VPC rules, secrets exposure, logging and alerting • Work through the client's existing application security backlog — issues currently handled ad hoc by IT and senior devs that need a permanent, focused owner • Partner with the engineering team to review new integrations and MCP components before they ship, and establish a repeatable pre-ship security review process • Document security controls, threat models, and remediation history so the client team can operate independently over time
Job Requirements
- Hands-on application security engineering experience — not consulting or auditing only.
- JWT token validation and API key management in production — scoped access patterns, token lifecycle, revocation logic
- Authentication and authorization design: OAuth 2.0, API key management, scoped access patterns in production systems
- Secrets management in cloud environments: AWS Secrets Manager, Vault, or equivalent — not just knowing they exist, but owning the implementation
- Experience identifying and mitigating prompt injection, tool misuse, and trust boundary issues in AI/LLM systems — or a strong OWASP Top 10 foundation with demonstrated ability to apply it to new attack surfaces
- Comfortable working as the sole security voice on a team — able to raise concerns diplomatically, hold the line technically, and prioritize a backlog without a security manager above you
- Near-native English — daily async communication with a US-based client team and technical lead
Benefits
- $4000 - $5500/month — paid in USD, bi-weekly via Deel
- US Eastern Time hours (EST) — Monday to Friday, 9:00 AM–6:00 PM EST
- Fully Remote — work from anywhere in Latin America
- Long-term contract — starting with a 6-month contract, with potential to extend
- Paid PTO — accrual begins after 3-month trial period
- Referral Program — earn a bonus for referring talent that gets hired
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