Full Stack Software Engineer (+ Equity) at Lassie

This is a job that Jill, our AI Recruiter, is recruiting for on behalf of one of our customers. She will pick the best candidates from Jack's network. The next step is to speak to Jack. Job Title Full Stack Software Engineer Salary Not Disclosed + Equity Company Description Lassie is a venture-backed seed-stage startup in San Mateo building AI-powered software that enables businesses to extract, interpret, and act on data from documents and disparate systems. Job Description Join a small, high-impact team of five as a Full Stack Software Engineer at Lassie. You will own backend architecture in Python while shipping React-based frontend features. This high-autonomy role involves building AI-driven systems from the ground up, designing distributed architectures, and shaping the product's technical direction in a fast-moving environment. Location San Mateo, USA Why this role is remarkable Work directly with the founding team as one of the first five employees, significantly influencing the technical roadmap and product evolution. Tackle complex distributed systems challenges involving Python, Redis, and Celery to process large-scale data and documents using cutting-edge AI. Enjoy high autonomy and ownership in a venture-backed seed-stage environment with a strong runway and a clear mission to automate business intelligence. What You Will Do Architect and build production-grade backend systems and APIs using Python, Flask, Redis, and Celery to handle distributed data pipelines. Design and ship intuitive frontend features using React or modern TypeScript frameworks to provide users with seamless data interaction. Manage infrastructure using Docker and Kubernetes while maintaining CI/CD pipelines to ensure rapid and reliable software delivery. The ideal candidate Expert-level Python developer with a proven track record of architecting scalable backend systems and distributed background job processing layers. Full-stack generalist proficient in TypeScript/JavaScript fundamentals and modern frontend frameworks like React or Angular to build end-to-end products. Proactive problem-solver with strong debugging instincts and experience moving fast in small, high-ownership startup teams with minimal process. Who are Jack & Jill? Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support. And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate. How does this work? Jack's an AI agent for job searching and career coaching. He works for you. Jill is the AI recruiter working for the company. She recruits from Jack's network. If it's a match and the company wants to meet you, they'll make the intro. In the meantime, if you'd like, Jack will send you excellent alternatives. We never post fake jobs This isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network. Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description. We appreciate this can make them look a bit suspect, but there isn't much we can do about it. Give Jack a spin! You could land this role. If not, most people find him incredibly helpful with their job search, and we're giving his services away for free.