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Back End Developer

Underdog.io -Apply to top tech jobs in 60 seconds. A place where companies apply to you · United States

📅 21/08/2026
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Shape the Future of AI-Powered Development at a Stealth-Mode YC Startup Backend Python Developer (AI-Driven Development) Bonus : 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: Deep expertise in building robust, scalable backend systems and microservices using Python or Node.js. You seamlessly integrate new libraries and frameworks. AI & Code Generation experience: You have hands-on experience with LLM APIs (OpenAI, Anthropic, etc.) and are genuinely excited about applying AI, particularly for code generation, automation, and revolutionizing developer workflows. Experience here is a major plus. Hacker Mentality: You thrive on diving headfirst into complex problems, rapidly prototyping solutions, reading docs on the fly, and iterating relentlessly. You fix things because they need fixing. Ultimate Self-Starter: You see gaps, identify opportunities, and take decisive action without waiting for direction. You own problems and drive solutions. What You'll Do: 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. Zero Bureaucracy, Pure Results: Operate in a lean, agile environment focused solely on building, iterating, and shipping. No corporate red tape. Equity with Real Potential: Your ownership stake represents a genuine opportunity for outsized returns as we grow. YC Intensity & Opportunity: Experience the unique, accelerated growth and network of Y Combinator. Be prepared to learn fast, pivot quickly, and embrace the challenge. Ready to Build the Future? If you're a brilliant, driven engineer who thrives on velocity, craves massive ownership, and is passionate about leveraging AI to redefine development, this is your calling. Step out of the corporate machine and build something monumental from the ground up.
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