> Markdown version of [/jobs/ext/4721378-founding-software-engineer-1](https://www.wearedevelopers.com/jobs/ext/4721378-founding-software-engineer-1). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Founding Software Engineer #1 - **Company:** DALUS INC. - **Location:** San Francisco, CA, United States - **Salary:** $140,000 - $200,000 - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), Artificial Intelligence, Amazon Web Services, Systems Engineering, Design of User Interfaces, Hardware Design, Human-Computer Interaction, Python (Programming Language), Node.Js, Next.js, Software Engineering, TypeScript, Scripting, ReactJS, Large Language Models, Backend, Langfuse — LLM Observability and Analytics Platform, Front End Software Development, Industrial Software, Automation Anywhere - **Published:** November 14, 2026 - **Apply:** https://www.careerbuilder.com/job-details/founding-software-engineer-1-san-francisco-ca--9f0bbd79-7e70-402c-a06a-8c69e779b84f ## About the Role Software Engineering, Artificial Intelligence (AI), Hardware Design, Hardware Development, User Interface/Experience (UI/UX), Cross-Functional, React.js, JavaScript, Python Programming/Scripting Language, Amazon Web Services (AWS), * Experience with systems engineering, aerospace, manufacturing, or industrial software * Interest in simulation, modeling tools, or AI workflows * Past startup experience or personal projects that went deep ## Description We're looking for Founding Engineer #1 - someone who wants to go deep, build fast, and shape the future of our product and team. You'll be working across the entire stack (frontend, backend, AI, systems modeling) and helping us deliver real value to some of the most advanced hardware companies in the world. You'll thrive in this role if you: * Love wearing multiple hats and learning new things fast * Have strong product intuition and care about UX * Are excited to build the future of complex system design, not just work on it * Don't mind getting your hands dirty with hard problems (and hard schedules) Our Stack * Frontend: Next.js, Typescript, React * Backend: Node.js, Python (for simulation/AI), AWS * AI: Different LLMs, Langfuse, agent tooling workflows Who We Are We started Dalus in 2024. * Eliot was a test/systems engineer at Aerojet Rocketdyne (L3Harris), where he saw firsthand how siloed communication slowed down hardware teams. * Sebastian previously founded a neurotech hardware startup and scaled a software company to exit. We just wrapped up YC W25, have revenue, and are working closely with aerospace, robotics, and defense customers What You'll Do * Own major product features from idea to production * Work directly with customers to understand pain points * Help shape the architecture and engineering culture * Get hands-on with AI workflows, model interfaces, and simulations * Scale the platform to support real-world, high-stakes use cases We won't sugarcoat it - this will likely be the hardest you've ever worked. We move fast. We work late. We build on weekends. But if that energizes you rather than scares you - you'll probably grow more here in 1 year than in 5 anywhere else. This role comes with significant ownership, learning, and impact. You'll help define not just the product, but the company itself.