Senior Security Engineer

About the role

Make it rain. Make Snow. Make Earth Habitable.

Rainmaker builds and deploys audacious technologies that work with nature to create an abundant, habitable planet. We are modernizing proven cloud-seeding science with weather-resistant UAS, radar and satellite observations, numerical weather prediction, novel sensing and validation systems, and sustainable seeding technologies. We are building an integrated system to make more freshwater available to farms, ecosystems, and communities.

Our ambition is bold, but we pursue it with humility. We take on difficult problems in the real world with technical rigor, grit, integrity, and an openness to learning and course-correcting. We are hiring individuals with evidence of exceptional ability. If you want to build systems that endure, restore and deliver the future we were promised, we want to hear from you.

Make it rain. Make Snow. Make Earth Habitable.

Rainmaker builds and deploys audacious technologies that work with nature to create an abundant, habitable planet. We are modernizing proven cloud-seeding science with weather-resistant UAS, radar and satellite observations, numerical weather prediction, novel sensing and validation systems, and sustainable seeding technologies. We are building an integrated system to make more freshwater available to farms, ecosystems, and communities.

Our ambition is bold, but we pursue it with humility. We take on difficult problems in the real world with technical rigor, grit, integrity, and an openness to learning and course-correcting. We are hiring individuals with evidence of exceptional ability. If you want to build systems that endure, restore, and deliver the future we were promised, we want to hear from you.

Engineering builds the software, infrastructure, and aircraft systems that power Rainmaker’s cloud-seeding operations. We work with scientists and field operators to turn weather data into reliable systems that help make more freshwater available.

About the Role

- Rainmaker is hiring a Senior Security Engineer to build security into how we develop software and hardware, and how we run field operations. You’ll write production code and design secure defaults across AWS, our applications, and company systems, protecting scientific data and the systems our aircraft and field teams depend on. You’ll automate routine controls and checks, reducing recurring manual work as the company grows. You’ll work closely with engineers to test, operate, and improve the systems you build while keeping secure workflows straightforward to use.

What You’ll Do

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- Map critical systems, data flows, and access paths, then turn the highest-priority risks into a practical plan.

- Build reusable, secure-by-default AWS infrastructure with platform engineers, including least-privilege access, network boundaries, and logging for scientific and operational systems.

- Review application designs and code, build reusable authentication and authorization patterns, and fix vulnerabilities at their source.