Lead Application Security Engineer

About the Role

As the first dedicated security hire, you will shape application security for a growing B2B data infrastructure platform. This is a hands-on individual contributor role focused on solving high-impact security challenges in distributed systems and helping product engineering teams build securely as the company scales.

What You'll Do

• Improve tenant isolation and authorization models, including access controls for multi-team and multi-brand use cases.
• Design and strengthen security architecture for compute isolation, and threat model and harden new products.
• Improve rate limiting, abuse detection, and granular access controls for high-throughput, internet-facing APIs.
• Support multi-region and multi-cloud infrastructure, including technical controls for data residency.
• Identify the highest-impact security risks, own your roadmap, and implement production fixes in collaboration with product engineering teams.

What We're Looking For

• Six or more years of security engineering experience, with deep knowledge of distributed systems and recent hands-on production coding experience.
• Prior backend software engineering experience building production APIs, distributed systems, or data pipelines.
• Experience as an early security hire at a SaaS or data infrastructure company, and experience helping a venture-backed or high-growth technology company scale.
• Experience securing multi-tenant platforms, including tenant isolation and authorization, and systems spanning multiple cloud providers or regions.
• Security engineering experience that includes defensive responsibilities, plus familiarity with privacy controls such as PII handling, GDPR, or CCPA.
• A degree in computer science, mathematics, physics, or a related field. Relevant technologies include TypeScript, Go, AWS, Azure, and GCP.

Compensation & Benefits

Base salary: $220,000 to $320,000 annually. Visa sponsorship is available.

Location

Remote, United States.