[Remote] Senior Security Consultant, Application Security

Note: The job is a remote job and is open to candidates in USA. IOActive, Inc. is a leading cybersecurity firm focused on making the world a safer place through innovative security services. They are seeking a Senior Security Consultant in Application Security to lead manual code reviews, application penetration testing, and secure development lifecycle engagements, while mentoring junior consultants and contributing to the company's research and market presence.

Responsibilities

• Lead manual source code reviews on complex production codebases spanning web applications, mobile backends, APIs, and embedded systems
• Identify vulnerability classes ranging from common (injection, authentication and authorization flaws, SSRF, XSS, deserialization) to nuanced (race conditions, deserialization gadgets, cryptographic implementation flaws, business logic vulnerabilities, architectural weaknesses)
• Author findings reports that developers can act on: clear remediation guidance, working proof-of-concepts where appropriate, and architectural recommendations beyond the immediate fix
• Lead client developer workshops to explain findings and patterns, helping teams build security resilience rather than just fixing the listed issues
• Application penetration testing across web, API, and mobile targets, particularly where engagements span code review and dynamic testing
• Threat modeling on new product designs and existing systems using STRIDE, attack trees, or equivalent frameworks
• Secure design reviews of architecture, authentication systems, cryptographic implementations, and inter-service communication
• SDLC advisory engagements: helping clients integrate code review, threat modeling, and security testing into their development lifecycle (CI/CD, pull-request workflows, developer training)
• Serve as the senior technical voice in engagement status meetings, client workshops, technical deep-dives, and developer training sessions
• Build trusted technical relationships with client engineering leadership, AppSec teams, and security architects
• Translate technical findings for two distinct audiences: developers who need to fix the issue, and security leadership who need to understand the business risk and pattern
• Support pre-sales conversations with technical credibility — scoping calls, capability discussions, and proposal input
• Mentor junior and mid-level consultants in code review methodology, vulnerability research, and client engagement — even without direct reporting authority
• Contribute to IOActive's code review playbooks, tooling, methodologies, and report templates
• Identify opportunities to extend IOActive's AppSec capability — new tooling, target stacks, research directions, or service offerings
• Collaborate with adjacent practices (Red Team, Hardware/Silicon, Advisory) on composite engagements
• Contribute to IOActive's application security research — vulnerability discovery, novel attack techniques, framework- or platform-specific findings
• Build personal profile in the application security community: conference talks (Black Hat, DEF CON, OWASP Global, BSides, regional AppSec events), published research, working group participation
• Represent IOActive in AppSec industry conversations, OSS security efforts, and customer advisory engagements as opportunities arise

Skills

• 5+ years in offensive security services, with at least 2–3 years focused on application security and source code review
• Hands-on engagement delivery across multiple AppSec disciplines — code review, application penetration testing, threat modeling, or SDLC consulting
• Deep code review expertise in at least two of: JavaScript / TypeScript (Node.js, modern frontends), Python (Django, Flask, FastAPI), Java (Spring, J2EE), C# / .NET (ASP.NET, Core), C / C++, Rust, GoLang. Working competence in additional languages a strong plus
• Working knowledge of common framework patterns, ORM behavior, authentication and authorization libraries, cryptographic libraries, and the security pitfalls particular to each
• Familiarity with vulnerability classes
• Strong technical credibility and the comfort to operate as the senior voice on engagements
• Excellent written communication — you produce reports that developers act on rather than file
• Strong verbal communication, with the ability to both present as a subject matter expert in technical discussions and deliver complex concepts, results, etc. to a general audience
• Comfort moving between languages and stacks — specialists who insist on a single technology stack don't fit this role
• Collaborative mindset — AppSec engagements typically involve close coordination with delivery teams and client developers
• Genuine curiosity about how systems work, and patience for reading code carefully — code review consultants who succeed at IOActive are the ones who find the work interesting rather than tedious
• Relevant bachelor's degree or equivalent experience
• Familiarity with relevant standards and frameworks: OWASP ASVS, NIST SSDF, BSIMM, SAMM
• Relevant industry certifications strongly preferred: OSCP, OSWE, GWAPT, CSSLP, GWEB, or equivalent application-security focused credentials

Benefits

• Competitive compensation and performance-based incentives
• Flexibility—work remotely or from the office as needed
• Opportunities for travel
• A chance to work with an industry leader in cyber security
• Access to world-class technical teams and research
• A high-energy, collaborative team that values innovation

Company Overview

Company H1B Sponsorship