Principal Full Stack Engineer

Who We AreFounded in 2023 by music industry veteran Matthew Adell, serial startup founder Sean Power, and Machine Learning expert Nicolas Gonzalez Thomas, Musical AI builds technology that makes training on copyrighted content both possible and principled. We have invented verifiable attribution technology that measures the influence of an AI training corpus on generative AI outputs. Our platform includes a licensing layer that connects AI builders with premium copyrighted catalogs under clear terms, so AI companies can move fast in ways that work positively within the entertainment industries.We partner with AI companies, labels and publishers to make consent, credit and compensation practical learn more about us, read our full Manifesto. We are backed by incredible VCs who understand our vision and support us in execution. This is your chance to join from the ground floor, help shape our product, and leave your mark on something that will change the music industry forever.We’re first-to-market in our category because we move fast, thoughtfully experiment, and balance innovation with practical delivery. We have a big idea and we need a team that can help us get it done. Our values define how we work: innovation, adaptability, accountability, collaboration, urgency, and value creation.Who We’re Looking ForWe’re looking for a curious, collaborative, and impact-driven Principal Full Stack Engineer who wants to build groundbreaking tools at the intersection of AI and music. As an early team member, you’ll be expected to lean on your experience and get your hands dirty. You don’t have to be a music theory expert, but a commitment to making premium AI training accessible is. We’re looking for someone who thrives in collaborative, inclusive teams where we work together to get things done, and who can adapt easily when things change (and in AI, they change often). Our team values shipping, testing, and improving over chasing perfection, and takes pride in learning, experimenting, and building things that make a difference.We’re remote-first across Canada and come together as a team a minimum of twice a year. All applicants must live and be eligible to work in Canada.Your Experience6-10+ years of professional software engineering with substantial full-stack product delivery.Proven experience owning complex features end-to-end across frontend, backend, and data.Background in one or more: high-scale data/real-time systems, media/content platforms, fintech/payments, or B2B marketplaces.Experience collaborating with product/design and interfacing with enterprise customers.Leadership experience mentoring others, leading designs, and influencing engineering standards.Your Tool StackFrontend: React 18, Next.js, Tailwind, Framer Motion, data-viz (D3.js/Chart.js)Backend: Node.js/Express or Python/FastAPI; Graph QL + REST; Web SocketsData: Postgre SQL, Mongo DB/Dynamo DB; Redis/queue; vector DB (for attribution)Cloud: AWS (App Sync, Amplify/Cognito, S3, Cloud Front, Lambda/ECS/EKS)Platform: Multi-tenant architecture, comprehensive audit loggingWhat You’ll Be Doing Technical LeadershipDrive key architectural decisions for a scalable, multi-tenant platform.Establish engineering best practices, code standards, CI/CD, and review processes.Mentor developers; lead technical design reviews and interviews.Core Development (Full-Stack)Frontend (React 18/Next.js)Build dashboards for rights holders and AI companies.Implement data analytics and visualization (D3.js/Chart.js or similar).Build responsive UI systems (Tailwind; component libs), with smooth UX (Framer Motion).Integrate auth and session flows (AWS Amplify/Cognito or equivalent).Backend (Node.js/Express or Python/FastAPI; Graph QL/REST)Design and implement REST/Graph QL APIs for transactions and data access controls.Build authentication and role-based multi-tenant authorization.Create reporting engines for usage analytics, royalty calculations, and financial reporting.Implement real-time features (Web Sockets/subscriptions) for notifications and messaging.Build file flows for audio/metadata upload, download, and secure delivery.Strategic Planning & OperationsTrans…