US-based Founding Engineer - Stealth-Mode Cyber & AI Startup Job at Hire5, San Francisco, CA

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  • Hire5
  • San Francisco, CA

Job Description

Location: San Francisco Bay Area (flexible, but must be US-based). Compensation: Competitive salary + equity. We are a stealth-mode cyber and AI startup in California (name withheld till the interview stage) backed by top-tier VCs and industry-leading angels from the top of the cyber industry. Founded by cybersecurity experts from Microsoft and Tesla , our team is on a mission to redefine the industry with breakthrough products that deliver entirely new capabilities in the cyber realm. The Role We are looking for a top-tier technical leader who thrives in startup environments—someone who can architect, build, and ship a highly complex application from zero to launch . This is a founding engineering hire , responsible for selecting the tech stack , leading the development , and turning our vision into reality . You will be working alongside a highly experienced CTO , who comes from a strong research background and has managed large teams but is not deeply hands-on in development. Your role will be to lead the technical execution, while also hiring and mentoring a second engineer over time. In this role, you will have the opportunity to create a one-of-a-kind product that will literally define a new set of capabilities in the cyber realm. What you’ll do Build from scratch: Architect, develop, and deploy a scalable, secure, high-performance system in a fast-paced, high-growth environment. Own the tech stack: Make key technical decisions independently, balancing speed and scalability. The stack is flexible—problem-solving skills matter most. Hands-on development: This is an execution-heavy role—be a true builder, not just a manager. Optimize for speed: Help launch an MVP in 2-2.5 months for internal testing while maintaining high-quality standards. Work closely with founders: Shape the product roadmap and broader company strategy. Thrive in ambiguity: Operate in an evolving, unstructured startup setting, taking ownership of challenges and driving solutions. What we’re looking for Fast-growth experience: Prior work in a high-growth startup (zero-to-one or one-to-hundred scale) is strongly preferred over experience in large, slow-moving corporations. Lead by example: Architect and build complex web systems from concept to launch. Technical problem solver: Make smart, scalable decisions without rigid dependencies on specific tech stacks. Innovate processes: Implement efficient development workflows, including CI/CD pipelines and version control best practices. Cloud expertise: Strong AWS experience required (GCP/Azure is a bonus). Agentic AI & Scalability: Experience with agentic AI workflows and scalable infrastructure is a plus. Hands-on leadership: Roll up your sleeves, solve real problems, and set a high technical bar. Strong communication: Not just a genius coder—someone who can collaborate, lead, and contribute to a strong team culture. Reliability & commitment: Adaptability, follow-through, and dependability are critical. US-based: Preferably in Seattle or the Bay Area (we will have an office soon but remain flexible on remote work). Minimum Requirements 8+ years of experience developing complex web systems. Deep expertise in AWS development. Experience with building agentic AI workflows and scalable infrastructure is a huge plus. A strong believer in teamwork and collaboration. Excellent communication skills. An unyielding drive to build the next breakthrough in cybersecurity. An independent, positive mindset and a willingness to push hard every day. Why Join Us? Huge impact: Your work will define the next era of cybersecurity . High equity: Be a founding team member with meaningful ownership. Elite backing: Work with top-tier investors and cybersecurity leaders. Real customers: Fortune 500 enterprises are already lined up for our product. This is a high-intensity, high-reward opportunity for someone who wants to be at the core of something groundbreaking. If you’re up for the challenge, let’s talk! #J-18808-Ljbffr Hire5

Job Tags

Remote job, Flexible hours,

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