Developer Needed to Build a Custom Software Platform Using Multiple AI Models

We are looking for an experienced developer to build a custom software platform that uses multiple AI models and providers. This is not a simple chatbot project. We need a real software platform with solid backend logic, AI integrations, and a clean, functional user interface. The goal is to create a custom platform that can connect different AI models depending on the task, with the possibility to expand and improve the system over time. The ideal developer should have experience building custom software, web applications, SaaS platforms, or internal tools that integrate APIs and AI systems. The project may include: - integration of multiple AI models/providers - backend logic to route tasks to different models - prompt handling and structured outputs - dashboard / user interface - database setup - authentication / user accounts - file upload / processing - API integrations - logging, fallback logic, and error handling - scalable architecture for future development Preferred skills: - strong software development experience - Python and/or JavaScript - AI integrations - API integrations - web application development - ability to think about architecture and product logic, not only coding Important: Please do not apply if your experience is limited only to simple chatbot setups or basic no-code automations. When applying, please include: 1. examples of similar software or platforms you have built 2. which AI tools, APIs, or models you have integrated before 3. what tech stack you would recommend for this kind of project 4. whether you are comfortable starting with planning/architecture and then continuing with development We are looking for someone who can help build the platform for real, not only advise at a high level. Please write “MULTI-AI” at the beginning of your proposal so we know you read the full job post.