Senior Software Engineer - Application Security

The Role:

Emergent runs a massive, multi-tenant, AI-driven execution environment where code is generated and executed continuously. You will secure the infrastructure that powers autonomous software creation.

What You’ll Do

Secure AI-generated applications at scale

• Define security patterns for applications generated by AI agents
• Enforce guardrails across auth, data access, APIs, and business logic
• Build frameworks to ensure secure-by-default app generation

Design “secure generation” systems

• Work directly with AI/agent pipelines to prevent insecure code from being produced
• Build validation layers for generated code (static + semantic)
• Detect prompt injection and adversarial input patterns

Own application threat modeling

• Identify vulnerabilities in dynamic app creation flows
• Analyze risks in multi-tenant user-generated environments
• Build reusable threat models for agent-driven systems

Build developer-facing security primitives

• Auth systems, permission frameworks, secure SDKs
• Secure API gateways and rate limiting
• Input/output validation layers for LLM-driven flows

Red team AI-generated apps

• Break applications generated by Emergent agents
• Identify systemic weaknesses vs one-off bugs
• Feed learnings back into generation systems

What We’re Looking For

• 5–10+ years in Application Security
• Strong coding ability (Python, JS/TS, backend systems)
• Deep understanding of:
  • OWASP Top 10
  • Auth & session management
  • API security
  • Injection & sandbox escape vectors
• Experience working closely with product/engineering teams

What Sets You Apart

• You think in systems, not vulnerabilities
• You want to prevent insecure code from ever existing
• Experience with:
  • AI/LLM systems
  • Prompt injection & output validation
  • Secure code generation systems

Why Emergent

• Build security for AI systems that build software
• Operate at global scale (millions of apps, millions of users)
• Work directly with founders and core engineering
• Solve problems that don’t exist anywhere else yet