Senior Security Application Engineer (Web3)

TL;DR

Senior Security Application Engineer (Web3): Leading the technical execution of product security strategy for digital asset platforms with an accent on CI/CD automation, cloud infrastructure hardening, and AI security. Focus on architecting secure-by-default AWS environments, implementing LLM guardrails, and defending against sophisticated nation-state threats.

Location: Full-time onsite in San Francisco, California, USA

Salary: $200,000 – $245,000 USD base

Company

Leading infrastructure provider of digital asset solutions specializing in custody, wallets, staking, and settlement services from regulated cold storage.

What you will do

• Lead comprehensive threat modeling and product security architecture reviews with cross-functional teams.
• Integrate security automation (SAST, DAST) into CI/CD pipelines and manage continuous vulnerability assessments.
• Architect and implement secure cloud infrastructure on AWS using Terraform and Kubernetes.
• Design and deploy encryption services, key management systems (KMS), and data protection controls.
• Oversee corporate bug bounty programs, incident response workflows, and penetration testing engagements.
• Engineer security protocols and LLM guardrails for next-generation AI-integrated applications.

Requirements

• 8+ years of experience scaling end-to-end security programs in high-growth startups.
• Proven background securing platforms within FinTech, Web3, and digital asset ecosystems.
• Strong engineering proficiency in distributed systems, microservices, and Python or Java.
• Hands-on mastery of AWS infrastructure hardening, Kubernetes orchestration, and container security.
• Practical knowledge of SOC 2 Type II and GDPR compliance standards.
• Deep expertise in securing AI/ML lifecycles, MLOps frameworks, and agentic AI platforms.

Culture & Benefits

• Competitive base salary, performance bonuses, and stock options.
• 100% company-paid health insurance for employee, partner, and dependents.
• Up to 4% 401k company match.
• Paid parental leave and paid vacation.
• Free custom lunches, dinners, and snacks provided onsite.
• Commuter/parking passes and high-end customizable workplace equipment.