Mobile Security Engineer - Founding Team

About VXM Secure:
We're building GuardSuite — the Runtime Governance Layer for Zero Trust. We prevent high-risk actions BEFORE execution through real-time mobile authorization (biometric approval flows), not just post-breach detection. Patent-pending technology targeting federal/critical infrastructure (DoD, NSA, fintech, energy).

Stage: Pre-seed, raising $3M-$5M. Strategic advisor: SYN Ventures.

The Role:
You'll be building the mobile authorization client that enables executives and security teams to approve/deny high-risk actions in real-time with biometric authentication.

What You'll Own:

• iOS and/or Android native apps(Swift/Kotlin, production-grade security, not hybrid/React Native)
• Secure key storage (iOS Secure Enclave, Android Keystore, cryptographic key lifecycle)
• Biometric authentication (Face ID, Touch ID, fingerprint sensors - seamless UX with high security)
• Mobile signature flows (ECDSA/EdDSA signing, post-quantum crypto integration, HSM communication)
• Push notification security (encrypted payloads, anti-spoofing, tamper detection)
• Low-friction UX (approve in <3 taps, <10 seconds total - balancing security with usability)

Tech Stack: Swift (iOS), Kotlin (Android), Secure Enclave/Keystore, biometric APIs, gRPC/REST, Rust crypto library (backend integration)

Requirements

Must-haves:

• 3+ years native mobile development (Swift for iOS OR Kotlin for Android, production apps in App Store/Play Store)
• Secure key storage expertise (Secure Enclave, Android Keystore, key generation/rotation/destruction)
• Biometric integration experience (Face ID, Touch ID, fingerprint - security-critical implementations)
• Mobile cryptography knowledge (ECDSA/EdDSA signatures, secure key exchange, or willingness to learn PQC)
• Security-first mindset (threat modeling, anti-reverse-engineering, secure coding practices)
• US citizen or permanent resident (required for federal customer work, security clearance eligibility)

Nice-to-haves:

• Both iOS AND Android experience (we need cross-platform, starting with one is fine)
• Mobile security certifications (OWASP Mobile Security, iOS/Android security guides)
• Experience with HSM/hardware security modules
• Built authorization/approval apps (e.g., banking apps, MFA apps, transaction approval)
• Federal contractor background or active security clearance

Compensation & Why Join

Equity-heavy now, salary at seed:

• 0.5-1% founding equity (4-year vest, 1-year cliff)
• $0K/year now (equity-focused pre-seed)
• $130-150K salary when we close seed (target Q2 2026)
• Remote-first, quarterly team gatherings

Why this matters:

• Founding role - you'll define mobile security architecture
• Hard mobile security problems (biometrics, key storage, anti-reverse-engineering)
• Federal market (DoD/NSA customers = $500K-$2M ACV per customer)
• Category creation (Runtime Governance is new, first-mover advantage)
• 1% equity in $100M+ exit = $1M+

Career growth:

• Own entire mobile platform (iOS + Android)
• Hire mobile team (2-3 engineers by Year 2)
• Potential VP Mobile or Head of Client Engineering

How to Apply

Email: [email protected]

Subject: Mobile Engineer - [Your Name]

Include:
1. Resume (PDF)
2. Brief answers (2-3 sentences each):
* One mobile security challenge you've solved (key storage, biometrics, anti-tamper)
* Your approach to balancing UX friction vs security (example: approval flow design)
* Why runtime authorization + federal market excites you

1. Optional: App Store/Play Store links, GitHub with mobile projects

We respond within 48 hours.

Equal Opportunity Employer. We encourage applications from veterans, people with security clearances, and underrepresented groups in tech.