Hiring: Back End Developer Company: Underdog: Verified engineers. Interview-ready. Searching confidentially. And companies apply to you Location: United States Job Posted Time: 2026-09-16 13:00:44 Target Skills & Keywords : API Design, Agile, LLM, Make, Microservices, Move, Node.js, OpenAPI, Python, Warp About the job Required Skills: •Spearhead Rapid Prototyping: •Build MVPs at breakneck speed and evolve them into scalable, production-grade services powering our core product. •Champion AI Integration: •Leverage LLMs and other AI technologies to explore, prototype, and implement innovative features for automated code generation and developer productivity enhancement. •Build for Scale & Reliability: •Architect, develop, and deploy backend systems that handle real-world traffic, ensuring performance, stability, and resilience from day one. •Be a Full-Stack Founder (in Spirit): •Dive deep across the entire stack – backend architecture, AI model integration, API design, and infrastructure – doing whatever it takes to ship transformative features. •Define the Foundation: •Play a critical role in establishing engineering best practices, tooling, and the culture of our growing technical team. •Why This Opportunity: •Founder-Level Influence: •Your technical decisions and product ideas will directly shape the company's trajectory. This isn't just a job; it's co-creation. •Build Something Revolutionary: •Contribute to a product poised to change how developers work, leveraging the most exciting advancements in AI. Qualifications: •: Located in San Francisco Bay Area or New York City •One of our hiring partners is looking to hire a Backend Python Developer. Our hiring partner is a Y Combinator-backed startup building groundbreaking AI technology to fundamentally transform how software is developed. •Why This Role is Exciting: •Founding Team Impact: •Be an early employee. Work shoulder-to-shoulder with the founders. Directly shape the product vision, technical architecture, company culture, and stack from the absolute ground floor. Your voice matters. •YC Warp Speed: •Experience the unparalleled intensity and opportunity of building within the Y Combinator ecosystem. Expect rapid iteration, constant learning, and the chance to make pivotal decisions daily. •Meaningful Ownership: •Receive significant, early-stage equity. This isn't just a job; it's a stake in building something massive. Your contribution directly translates to tangible value. •Immediate & Visible Impact: •See your code move the needle – fast. Build, ship, break, fix, and ship again, often within the same day. Your work directly powers our progress. •Build the Cutting Edge: •Be at the forefront of AI-driven development, pioneering how Large Language Models (LLMs) can automate and optimize the creation of software itself. •Who You Are: •Python or Node.js expert: Interested candidates, please apply directly through the job posting on company's career page or try via AI auto apply on this platform. Don't miss this opportunity to join a forward-thinking team!