Senior Security Engineer

Rain is a stablecoin payments platform for enterprises, neobanks, platforms, developers, and AI agents. The Senior Security Engineer will build security systems and controls, secure infrastructure and access, assess products and partners, and support incident response as Rain expands.

Responsibilities:

• Build central security systems and automation the whole company relies on
• Secure cloud infrastructure, identity and access across Rain’s growing footprint
• Assess new products, partners and vendors before launch, and guide the engineers building them
• Build AI agents and tools that make security work faster and more accurate
• Lead external security assessments and drive findings to verified fixes
• Join the on-call rotation and support incident response

Requirements:

• 5+ years in security engineering, including building tools and controls that run in production
• Strong coding skills in TypeScript, Go, Rust or Python
• Experience securing cloud infrastructure, identity and access
• Ability to find vulnerabilities, prove them, and drive the fix with the team that owns the code
• Experience at a fintech, payments or crypto company
• Blockchain security: smart contract review, onchain monitoring, custody and multisig controls
• AI security: securing LLM applications and agents, or building AI into security workflows
• Experience running external audits or a bug bounty program