Problem Solvers LLP
Software Development Internjoinmultibrain.com ↗
Stack
- Typescript
- Next.js
- Python
- FastAPI
- Supabase
- DodoPayments
Worked on a short-term, focused engagement to build a multi-model AI access platform providing unified access to 400+ language models via a single interface.
Designed backend systems for usage tracking, credit-based billing, and concurrent model execution.
Contributed across the full stack, including backend services, database design, and frontend feature development.
What I shipped
- 01Built a wrapper platform over OpenRouter enabling access to 400+ AI models through a unified API and UI.
- 02Implemented a credit-based usage system that dynamically calculated and deducted credits based on per-request model costs.
- 03Designed and implemented concurrent execution pipelines allowing up to six AI model requests in parallel, with support for focused single-model interactions.
- 04Implemented persistent chat history and conversation management across sessions.
- 05Integrated DodoPayments to enable secure payments and credit top-ups.
- 06Migrated backend services from Next.js API routes to FastAPI, improving performance, scalability, and separation of concerns.
- 07Added full Markdown rendering support for AI responses to enhance readability and user experience.
