Senior Security Engineer – VC Backed Startups

SignalFire

Senior/Staff Security Engineers securing applications, cloud infrastructure, and development environments for SignalFire’s VC-backed startup portfolio. Building security controls, automation, detection, and incident-response capabilities.

Posted 8/5/2026full-time🇺🇸 United StatesSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in security engineering, application security, and cloud security, with a strong foundation in software engineering. Proficient in identifying vulnerabilities, implementing security controls, and integrating security practices into the software development lifecycle.

Highest-signal resume keywords

Security EngineeringApplication SecurityCloud SecurityVulnerability ManagementThreat Modeling

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

PythonGoJavaJavaScriptTypeScriptRustBashThreat ModelingPenetration TestingSecurity Automation

Soft Skills

CommunicationJudgmentMentoring

Tools & Technologies

AWSGCPAzureCI/CD PipelinesSecrets ManagementEncryption

Certifications & Qualifications

SOC 2ISO 27001HIPAAPCI DSS

Industry Keywords

Security ControlsIncident ResponseRisk PrioritizationSecurity PoliciesSecurity Assessments

Tech Stack

Tools & technologies

AWSAzureCloudGoGoogle Cloud PlatformJavaJavaScriptPythonRustTypeScript

About the role

Key responsibilities & impact

Design and implement security controls across applications, cloud infrastructure, internal systems, and development environments
Conduct architecture reviews, threat modeling, code reviews, and security assessments for new products and features
Identify, prioritize, and remediate vulnerabilities across the technology stack
Embed security into the software development lifecycle through secure coding standards, automated testing, and developer tooling
Build and improve detection, monitoring, incident response, and vulnerability management capabilities
Partner with engineering and infrastructure teams to strengthen cloud, container, network, identity, and access security
Lead or support the investigation and remediation of security incidents
Develop reusable security tooling, automation, documentation, and technical guardrails
Evaluate third-party technologies, integrations, and vendors for potential security risks
Support customer security reviews, enterprise diligence, and technical compliance requirements
Help establish security policies and controls aligned with frameworks such as SOC 2, ISO 27001, HIPAA, or PCI DSS
Mentor engineers and promote shared ownership of security across the organization
Submit an application to join SignalFire’s Talent Ecosystem
SignalFire reviews applications on an ongoing basis and may contact candidates when there is a match
Candidate profiles may be retained for future Security Engineering roles across SignalFire’s portfolio

Requirements

What you’ll need

5+ years of experience across security engineering, application security, cloud security, infrastructure security, or related disciplines
Strong software engineering or systems engineering foundation
Proficiency in languages such as Python, Go, Java, JavaScript, TypeScript, Rust, or Bash
Experience securing cloud-native applications and infrastructure on AWS, GCP, or Azure
Knowledge of common application and infrastructure vulnerabilities, attack techniques, and mitigation strategies
Experience with threat modeling, secure design reviews, penetration testing, or vulnerability research
Familiarity with identity and access management, secrets management, encryption, and network security
Experience building security automation and integrating controls into CI/CD pipelines
Ability to communicate technical risks and recommendations to engineering teams and business stakeholders
Strong judgment around risk prioritization, remediation, and balancing security with execution speed
Experience in venture-backed startups, security-sensitive industries, or rapidly scaling technology companies

Benefits

Comp & perks

Exclusive early-stage opportunities through SignalFire’s portfolio companies
Profile visibility to VC-backed startups actively hiring Security Engineering talent
Potential consideration for full-time operating roles, fractional/interim roles, and advisory positions
Profile kept on file for future Security Engineering roles across the portfolio
Occasional communications such as newsletters, insights, or invitations to community events (opt-in)