SentiLink - Principal Software Engineer, Product Security
Requirements
• 8+ years of experience in security engineering, software engineering with a security focus, or closely related roles • Proficient in at least one systems language (Go, Rust, C++) and at least one higher-level language (Python, TypeScript) • Proven ability to design and ship production software end-to-end • Deep AWS infrastructure expertise, including IAM, EKS, RDS, networking, and managed services • Demonstrated ability to identify security misconfigurations and vulnerabilities across cloud architectures, application code, and the integrations between them • Experience conducting or building tooling for penetration testing, vulnerability assessment, or red team activities • Track record of building security automation and tooling from scratch • Comfortable operating independently on ambiguous problems without heavy process or oversight • Strong communication skills and the ability to partner with engineers who are not security specialists • Experience building or deploying LLM-based agents or AI-assisted security tooling • Prior experience at a security product company (Wiz, Snyk, Datadog, etc.) or other security-forward engineering org • Prior fintech, identity, or fraud detection experience • Industry certifications (OSCP, OSCE, GPEN, GXPN) • Experience with detection engineering or SIEM platforms • Published security research, CVEs, or open source security tooling contributions • Experience supporting compliance frameworks (FedRAMP, SOC 2, PCI DSS) without it being their primary focus
Responsibilities
• Design and build internal security tooling from scratch, including agent-based security tooling, code analysis tooling, dynamic scanning, and security assessment tools • Identify vulnerabilities across SentiLink's AWS-based stack, including application code, cloud service configurations, and integrations between the two • Develop AI-assisted and agent-based tooling to scale offensive security testing beyond what a small team can do manually • Build and maintain security automation that improves detection, response, and remediation across the organization • Conduct hands-on penetration testing and vulnerability research against SentiLink's infrastructure and applications • Partner with engineering teams to remediate findings and embed security into the development process without slowing them down • Participate in the security on-call rotation, including incident response and regular response testing • Contribute to threat modeling and security design reviews for new systems, with a focus on cloud integrations and identity flows • Stay current on offensive security techniques, AI-assisted security tooling, and emerging attack patterns relevant to fintech and identity verification
Benefits
• Employer paid group health insurance for you and your dependents • 401(k) plan with employer match (or equivalent for non US-based roles) • Flexible paid time off • Regular company-wide in-person events • Corporate Values: • Corporate Values: • Deep Understanding • Whatever It Takes • Do Something Smart
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