Senior Principal Software Engineer (Python) – Founding Engineer - Seattle

We are a funded, early-stage AI startup operating in stealth mode.
We are building Solvin, the world’s first fully autonomous AI teammate that independently fixes bugs end-to-end, freeing developers to focus on features and innovation. Unlike existing coding assistants that require constant developer supervision, Solvin operates as an autonomous virtual engineering team member. Powered by a novel multi-agent operating system, Solvin works in the background to transparently handle the entire bug lifecycle. We have designed our platform from the ground up for enterprise environments, with a deep focus on security, observability, and fine-grained control.

As a Founding Engineer, you will be a cornerstone of our technical team. You will have a pivotal role in designing, building, and deploying the foundational elements of our product. We're seeking a passionate and experienced engineer who is excited by the challenge of building a product from its initial concept to a production-ready MVP and beyond. You will work in a dynamic, fast-paced environment where your contributions will be visible and impactful from day one. This role requires a blend of strong technical expertise, a product-oriented mindset, and the ability to thrive in the ambiguity of an early-stage startup.

• Take ownership of significant parts of our system, architecting and building our core product from the ground up.

• Write clean, high-performance, and scalable code, primarily in Python.

• Collaborate closely with the founders to define and iterate on the product roadmap and technical strategy.

• Design, build, and maintain the infrastructure for our AI and machine learning models.

• Establish and champion best practices for software development, including testing, CI/CD, and code reviews.

• Contribute to all phases of the product development lifecycle, from ideation and design to implementation and launch.

• Help shape our engineering culture and, as we grow, mentor and guide future team members.

• A seasoned engineer with 10+ years of software development experience.

• At least 4 years of professional experience in Python development.

• A minimum of 1 year of hands-on experience building generative AI technologies and agentic systems utilizing LLMs and frameworks like LangChain or LlamaIndex.

• Proven expertise in backend development and experience shipping and maintaining production systems.

• A self-starter with the ability to work independently and navigate the challenges of a fast-paced startup environment.

• A strong background in cloud computing (AWS, GCP, or Azure) and Kubernetes.

• Proficiency in other programming languages such as Java, C++, or TypeScript.

• Familiarity with Python build systems and packaging.

• A Bachelor's degree in Computer Science. A Master's degree or PhD is a strong plus.

• Foundational Impact: You will be more than just an early employee; you'll be a true partner in building our company and culture.

• Significant Equity: We offer a generous equity stake, ensuring that you share in the success you help create.

• Cutting-Edge Technology: Work at the forefront of AI and solve challenging problems with a real-world impact.

• Direct Influence: Your ideas and decisions will directly shape the future of our product and company.