--- title: 'Sr. Security Engineer at Rainmaker Technology Corporation' canonical: 'https://feeny.ai/job/sr-security-engineer-rainmaker-technology-corporation-el-segundo-c2j5zrzwgdy8' type: 'job' last_seen: '2026-10-26' --- # Sr. Security Engineer at Rainmaker Technology Corporation - **Company:** Rainmaker Technology Corporation - **Location:** El Segundo, CA - **Compensation:** $128k–$225k - **Work type:** onsite - **Posted:** 2026-10-26 - **Last confirmed live:** 2026-10-26 - **Apply:** https://jobs.lever.co/make-rain/3d79a29a-5133-44eb-8469-b7c9cba21dd6 ## Job description 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 Sr. 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 - 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. - Automate access provisioning and revocation, secrets management, and credential rotation across production and company systems, with clear audit trails and recovery paths. - Build security checks into development and deployment workflows to catch exposed secrets, vulnerable dependencies, and unsafe configuration changes before release. - Build useful detections and automate evidence gathering for investigations. Work with system owners to test incident response and recovery. - Make Google Workspace and device configurations secure by default, working with People and Operations to make onboarding and offboarding reliable and easy to use. - Partner with aircraft and field teams on secure remote access and communications for systems that operate with intermittent connectivity. - Test, monitor, and document security automation so other engineers can maintain it. Simplify controls that create unnecessary alerts, exceptions, or recurring manual work. ## What We’re Looking For - Experience building and maintaining security automation in production. You can show what risk it reduced, how you tested it, how failures are handled, and what manual work it eliminated. - Strong software engineering skills in Python, TypeScript, or a similar language, including testing, code review, deployment, and operating what you build. - Hands-on cloud security experience, with the ability to turn access policies, network boundaries, and logging requirements into reusable infrastructure as code. - Practical understanding of application security, authentication, authorization, secrets management, and common web and API vulnerabilities. - Experience investigating security findings and carrying fixes through to deployment and verification. - Sound judgment about risk, reliability, and maintenance costs. You can choose a simple, effective control and explain what should happen now versus later. - Ability to work independently, communicate clearly with engineers and non-engineers, and follow through on work that spans teams. What Will Set You Apart - Experience with AWS, Pulumi or Terraform, and GitHub or Buildkite deployment workflows. - ## Experience with Tailscale or WireGuard - Security work involving robotics, aerospace, scientific computing, or remote field systems. - Experience building self-service security tools or reusable controls that other engineering teams adopted. What Success Looks Like In the First 90 Days You’ve mapped our critical systems and access paths and agreed on the highest-priority risks with the team. A secure configuration or access control is deployed on a critical system, with tests that catch unsafe changes. One recurring security workflow now runs automatically, with monitoring, a tested recovery path, and documentation so it can operate without your daily intervention. You’ve tested a detection and response path with the engineers who will use it and agreed on the next improvements. ## About Rainmaker Technology Corporation ## Company Overview - **One-liner**: Rainmaker Technology Corporation uses drone-based cloud seeding to increase precipitation, restore ecosystems, and fight drought. - **Entity Type**: Public (NASDAQ: RNK) – also described as privately held in some sources; likely a recent public listing with small revenue and high growth. - **Headquarters**: El Segundo, California, United States - **Founded**: 2023 - **Founders**: Not publicly available ## Core Business - **Primary industry**: Climate Technology Product Manufacturing / Weather Modification - **Target customers**: Governments, water districts, agricultural operators, and environmental restoration organizations (B2G/B2B) - **Mission or purpose**: “Make rain. Make snow. Make Earth habitable.” – ending water scarcity with next-generation cloud seeding. ## Products & Services - **[Next-Generation Cloud Seeding System]**: Integrated system of advanced radar, unmanned aircraft (drones), and a cutting-edge weather awareness platform. Used to deliver moderate, predictable increases in precipitation. Aimed at restoring ecosystems, recharging aquifers, and reducing wildfire risk. ## Market Standing - **Valuation/Market Cap**: Not disclosed; total funding of $31.3M (LinkedIn) or $73.9M (CB Insights) – conflicting reports. Last funding round: Series B of $41M (CB Insights) or Series A of $25M led by Lowercarbon Capital (LinkedIn). - **Key Metric**: Annual Revenue $7.3M (LinkedIn); Total Funding $31.3M (LinkedIn) / $73.9M (CB Insights) - **Notable Investors/Partners**: Lowercarbon Capital, Starship Ventures, UP Partners, 1517 Fund, Long Journey Ventures, Garry Tan, and 18+ others (CB Insights). - **Growth Signals**: 78 employees (+117.4% YoY); 15,285 LinkedIn followers (+148.5% YoY); active job postings: 35 (+337.5% YoY); first U.S. commercial cloud-seeding operation with measured proof of generated precipitation (19 million gallons in 3 hours with 2 drones, August 2026). ## Competitive Advantages - **Scientific Rigor**: Embedded research organization (Rainmaker Fellows) dedicated to validating results and transparency. - **First-Mover Proof**: Demonstrated measurable, unambiguous precipitation increase in a commercial operation (USA Today coverage). - **Integrated Technology**: Combines radar, drones, and weather platform – a modern, proprietary system vs. legacy cloud seeding methods. - **Location**: Based in El Segundo, CA, part of a deep-tech ecosystem with strong engineering talent. ## Strategic Focus - **Scale operations**: Expanding into new geographies (Australia, Southern Europe, DACH, India, Middle East); hiring directors of business development for multiple regions. - **Research & Development**: Launched Rainmaker Fellowship (3-month program) to advance atmospheric science and weather modification. - **Regulatory & Public Trust**: Committed to transparency and public education about cloud seeding capabilities and limitations. ## Why Work Here - **Culture**: Described as “an engineering organization and a microcosm of El Segundo's spirit” – iterate quickly, solve the most important problem of our age. - **Work Environment**: On-site roles in El Segundo, CA, with seasonal field positions across the western U.S. (Utah, Nevada, etc.). - **Growth**: Rapidly scaling headcount (117% YoY), high-visibility work with real-world environmental impact. - **Perks**: Opportunity to work on “physical technology” in a deep-tech renaissance; hands-on with drones, radar, and weather systems. - **Values**: Stewardship of the natural world, scientific rigor, and making freshwater available to all. ## Sources 1. [rainmaker.com](https://www.rainmaker.com/) 2. [jobs.lever.co/make-rain](https://jobs.lever.co/make-rain) 3. [linkedin.com](https://linkedin.com/company/rainmaker-technology-corporation) 4. [cbinsights.com](https://www.cbinsights.com/company/rainmaker-4) ## Other roles at Rainmaker Technology Corporation - [Embedded Software Engineer](https://feeny.ai/job/embedded-software-engineer-rainmaker-technology-corporation-el-segundo-fvx1h84rvdb3) — El Segundo, CA - [Senior Electrical Engineer](https://feeny.ai/job/senior-electrical-engineer-rainmaker-technology-corporation-el-segundo-67ek8ebrw2fs) — El Segundo, CA - [Manager, GNC and Test Engineering](https://feeny.ai/job/manager-gnc-and-test-engineering-rainmaker-technology-corporation-salt-lake-city-9ep7g55d8j11) — Salt Lake City, UT - [Lead, UAV Integration Technician](https://feeny.ai/job/lead-uav-integration-technician-rainmaker-technology-corporation-el-segundo-7d9z9hk1gpj5) — El Segundo, CA - [Director of Agricultural Development](https://feeny.ai/job/director-of-agricultural-development-rainmaker-technology-corporation-washington-tnnrgwcw3g38) — Washington, DC - [Director of Science Policy](https://feeny.ai/job/director-of-science-policy-rainmaker-technology-corporation-washington-y5ag13vxkz9x) — Washington, DC - [Director of Water Development](https://feeny.ai/job/director-of-water-development-rainmaker-technology-corporation-washington-p0kvm3wpr9e4) — Washington, DC - [Director of International Development](https://feeny.ai/job/director-of-international-development-rainmaker-technology-corporation-fshbbqh5sagq) — Washington, DC - [Electrical Engineer](https://feeny.ai/job/electrical-engineer-rainmaker-technology-corporation-el-segundo-7stdfxrqvfaq) — El Segundo, CA - [Senior Mechanical Engineer](https://feeny.ai/job/senior-mechanical-engineer-rainmaker-technology-corporation-el-segundo-0xzkcvjb7565) — El Segundo, CA