Manager, Security Engineering, Cloud & AppSec

Horizon3.ai

. Lead, coach, and grow the Security Engineering team, including both Cloud Security Engineers and Application Security Engineers .

Posted 5/19/2026full-timeRemote • 🇺🇸 United StatesMid-LevelSenior💰 $149,850 - $185,000 per yearWebsite

Tech Stack

Tools & technologies

AWSAzureCloudCyber SecurityGoogle Cloud PlatformSDLCTerraform

About the role

Key responsibilities & impact

Lead, coach, and grow the Security Engineering team, including both Cloud Security Engineers and Application Security Engineers
Set priorities and operating rhythms for the team, balancing strategic security investments, day-to-day engineering support, and incident response
Design and implement security controls across our Cloud environments, such as but not limited to: AWS, Azure, GCP, Digital Ocean, OCI, etc., including IAM, SCPs, VPC security, S3 bucket policies, security groups, key management, and logging
Continuously monitor and improve cloud posture by managing and tuning services such as GuardDuty, Security Hub, AWS WAF, CloudTrail, and Inspector
Partner with engineering teams to embed security into the SDLC, including secure design reviews, threat modeling, architecture review, and CI/CD security automation
Lead the application security program, including secure coding practices, vulnerability management, developer enablement, and product security reviews
Continuously monitor and improve application security tooling by managing and tuning services such as SonarQube, Dependency Track, ZAproxy, Trufflehog, Trivy
Build and maintain GitLab CI/CD pipelines and tooling for automated security testing and scanning of cloud resources and applications
Conduct threat modeling, architecture reviews, and risk assessments for cloud deployments, product features, and new systems
Implement security monitoring, secure systems hardening, and detective controls for malicious activity across AWS and application environments
Respond quickly to new and emerging threats and vulnerabilities; support investigations, post-mortem analysis, root cause identification, and preventive actions
Define and enforce identity and access management best practices, including least privilege, federated identity, role-based access control, and automated remediation
Develop and maintain security policies, standards, and procedures aligned to frameworks such as SOC 2, GDPR, ISO 27001, FedRAMP, NIST, CIS, and MITRE ATT&CK
Create metrics, reporting, and risk narratives that communicate security posture, trends, and priorities to business owners and leadership
Evaluate and recommend new tools, techniques, and controls to improve the security posture of our cloud and application environments

Requirements

What you’ll need

Must be proficient in AWS security services, Terraform, GitLab, and modern CI/CD security practices
Must have a deep understanding of AWS security architecture, IAM, cloud posture management, data security principles, and secure SDLC practices
Must have experience leading or closely partnering with Application Security efforts, including threat modeling, vulnerability management, and security reviews
Must be knowledgeable in compliance standards and security frameworks, including SOC 2, GDPR, ISO 27001, FedRAMP, NIST, CIS, and MITRE ATT&CK
Must have strong written and verbal communication skills, with the ability to explain technical risks and tradeoffs to both technical and non-technical stakeholders
Must be able to work independently and as part of a team, with a strong sense of ownership and accountability
Must have experience developing metrics and reporting that communicate risk and security posture to leadership
Must have familiarity with DLP concepts, including data classification, identification, and protection
Bachelor’s degree in Computer Science, Cybersecurity, Information Systems, or a related field, or equivalent practical experience
5+ years of experience in cybersecurity
5+ years of experience securing AWS environments
5+ years of experience securing cloud-native systems and modern software delivery pipelines
Prior experience leading security engineers or serving as a technical lead in a security engineering function

Benefits

Comp & perks

Health insurance
Vision insurance
Dental insurance
Flexible vacation policy
Generous parental leave
Equity package in the form of stock options
Career development opportunities
Collaborative environment that encourages creativity

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

AWS security servicesTerraformCI/CD security practicescloud posture managementsecure SDLC practicesthreat modelingvulnerability managementsecurity reviewsdata security principlessecurity monitoring

Soft Skills

written communicationverbal communicationteamworkownershipaccountability

Certifications

Bachelor’s degree in Computer ScienceBachelor’s degree in CybersecurityBachelor’s degree in Information SystemsSOC 2GDPRISO 27001FedRAMPNISTCISMITRE ATT&CK