Security Engineer – Senior, Staff

SignalFire

Security Engineer joining SignalFire’s talent network for VC-backed startups. Designing controls, securing cloud-native systems, managing vulnerabilities, and establishing scalable security practices.

Posted 8/5/2026full-timeRemote • 🇺🇸 United StatesSeniorWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

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 EngineeringCloud SecurityVulnerability ManagementThreat ModelingSecure Coding Standards

ATS Keywords

Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills

PythonGoJavaJavaScriptTypeScriptRustBashCI/CD IntegrationPenetration TestingVulnerability Research

Soft Skills

CommunicationJudgmentCollaborationMentoringProblem-Solving

Tools & Technologies

AWSGCPAzureIdentity ManagementSecrets ManagementEncryptionNetwork Security

Certifications & Qualifications

SOC 2ISO 27001HIPAAPCI DSS

Industry Keywords

Security ControlsIncident ResponseSecurity AssessmentsTechnical ComplianceSecurity Policies

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 SOC 2, ISO 27001, HIPAA, or PCI DSS frameworks
Mentor engineers and promote shared ownership of security across the organization
Submit an application to join SignalFire’s Talent Ecosystem
Maintain profile consideration for future Security Engineering roles across SignalFire’s portfolio companies

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
Passion for building secure, resilient products and infrastructure
Experience identifying vulnerabilities and translating security risks into practical engineering solutions
Interest in establishing security programs and technical standards in fast-moving startup environments
Ability to partner across engineering, product, infrastructure, and business teams
Interest in balancing strong security controls with product velocity and customer needs

Benefits

Comp & perks

Exclusive early-stage opportunities that may not be publicly listed
Profile shared with SignalFire portfolio companies
Ongoing profile consideration for future Security Engineering roles across the portfolio
Potential access to full-time operating, fractional/interim, and advisory opportunities (based on applicant preference)
Opportunity to receive newsletters, insights, or invitations to community events (with consent)