About Chorus AI Chorus AI helps missiondriven organizations grow their impact through AIpowered insights and automation. We unify data and content across digital, direct marketing, and field campaigns to show whats working, why it works, and how to scale it. Were a lean team of three founders building an AIfirst platform designed to help organizations move faster and make smarter decisions. With our seed round closing and revenue growing 20% monthovermonth, were ready to bring on our first engineering hire. About the Role As our Founding Backend Engineer, youll work directly with the CEOwho also leads technical strategyto build and scale the core systems that power our platform. Youll own implementation and delivery endtoend, translating ideas into productionready systems that perform at scale. This role is deeply handson: expect to spend most of your time coding, architecting for growth, and shipping features quickly and reliably. The ideal candidate thrives in ambiguity, has a strong bias for action, and believes progress beats perfection. You eat, sleep, and breathe problemsolving, shipping fast, learning quickly, and building the kind of resilient systems that make enterprise clients take notice. This is a demanding, highownership role suited for someone who wants to be at the heart of an earlystage company, with the autonomy to make things happen and the satisfaction of seeing their work drive realworld impact. What Youll Do Design, build, and maintain the backend systems that drive AIpowered campaign insights. Collaborate with the CEO to make core architecture and design decisions that shape Chorus AIs technical foundation. Ship production features across agents, agent tools, MCP servers, data pipelines, and integrations. Rapidly iterate on new features and infrastructure. Tackle complex challenges: realtime data pipelines, analytics scalability, operational reliability. Maintain engineering best practices and contribute to shaping our engineering practice, tooling, and culture from the beginning. Our Stack Backend: Modern Python backend (Pydantic, FastAPI, uv) Database & Infra: MongoDB, Pinecone, Redis, AWS S3 Frontend: React Hosting: Render and Vercel Who You Are Senior Backend Engineer with expertise in Python and implementing production systems. Minimum of 5 years relevant experience. Strong background in building scalable, maintainable backend architectures. You are handson and resourceful, lowego, have relentless curiosity, and are comfortable in fastpaced earlystage startup environments. Excited to work inoffice 5 days/week in Toronto (68 Claremont St, Queen & Ossington). Youve contributed to collaborative or multiuser product features, and you understand the data, consistency, and UX considerations that come with them. Youve influenced engineering culture through code reviews, mentoring, or leading by example, and youre comfortable being a resource for others on architectural decisions. Fluency with modern AI tools (ie Claude Code, Cursor, etc) not just using them for code generation, but integrating them into how you debug, document, explore ideas, and reduce manual effort. Youve led backend projects from start to finish shaping architecture, guiding tradeoffs, and delivering reliable systems that support realworld product needs. Chorus AI is an equal opportunity employer committed to diversity, equity, and inclusion in the workplace. We welcome applicants from all backgrounds and do not discriminate on the basis of race, national or ethnic origin, colour, religion, age, sex, sexual orientation, gender identity or expression, marital or family status, disability, or any other characteristic protected under applicable Canadian laws. We are also committed to providing reasonable accommodations throughout the recruitment process. If you require an accommodation, please email , and well work with you to meet your needs. #J-18808-Ljbffr
Job Title
Founding Backend Engineer