Founding Engineer

About Us We're building the future of B2B software procurement. Choosion is a marketplace that helps companies discover, evaluate, and purchase software while unlocking discounts negotiated on their behalf. At the same time, we're building a suite of AI-powered sales and GTM tools that help software vendors reach the right buyers more efficiently. Our vision is to make buying and selling software dramatically easier for both sides of the market. We're an early-stage startup with pilot customers already using our product, and we're looking for a Founding Software Engineer to help us build the company from the ground up. The Role As one of our first engineers, you'll work directly with the founders to shape both the product and the engineering culture. You'll build core marketplace functionality, AI-powered sales tools, customer-facing features, internal systems, and everything in between. This is a high-ownership role where you'll have significant influence over product decisions, architecture, and technical direction. What You'll Do Design and build core marketplace features from concept to production.Build AI-powered sales and GTM products for software vendors.Ship full-stack features across frontend, backend, APIs, and infrastructure.Work directly with pilot customers to rapidly iterate on product feedback.Help define engineering standards, architecture, and development processes.Optimize product performance, reliability, and scalability.Collaborate closely with founders on product strategy and roadmap. What We're Looking For Strong software engineering fundamentals.Experience building production web applications.Comfortable working across the full stack.Ability to move quickly and ship high-quality products.Product-minded and enjoys talking to customers.Excited about working in a fast-paced startup environment.Strong communication skills and willingness to take ownership. Bonus if you have experience with: AI applications or LLMsMarketplaces or SaaS productsSales, CRM, or GTM softwareReact, TypeScript, Next.js, Node.js, or modern cloud infrastructure Why Join Build alongside the founders from day one.Work on challenging AI and marketplace problemsOwn major technical decisions with significant product impact.We will help sponsor US work authorization visa to best of our ability for exceptional team members.