# Principal Information Security Engineer

**Company:** [SentiLink](https://hotfix.jobs/companies/sentilink)
**Location:** Remote
**Role:** Security Engineering
**Salary:** $220k – $280k/yr
**Experience:** 8+ years
**Skills:** Go, Rust, C++, Python, TypeScript, AWS, IAM, EKS, Rds, Penetration Testing
**Posted:** 2026-05-28

> SentiLink is seeking a Principal Information Security Engineer to lead and enhance security across infrastructure, applications, and internal systems. This hands-on role involves building scalable security foundations, designing secure systems, and improving detection and response capabilities.

## Job Description

## 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

## 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

## Nice to have:
* 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

## Compensation:
* $220k-280k/year + equity + benefits

## Perks:
* 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
* Home office stipend, and more!

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