SaaS · Web & mobile · AI
BromeAISeveral AI models. A complete product around them.
A multi-model platform with accounts, subscriptions, credits and payments, built for everyday use.
- My role
- Product design and engineering at Promesia
- Context
- September 2023 — January 2026 · still active at Promesia
The starting point
Bringing models into one interface is not enough to build a SaaS. Usage, access, consumption and web and mobile journeys all need to work together.
What I took responsibility for
During my time at Promesia, I designed and developed a large part of BromeAI: product framing, architecture, interfaces, AI integrations, accounts, subscriptions, credits, payments, deployment and support.
The decisions that matter
A product beyond the chat screen
Connect AI providers to user journeys, access management and the wider service.
Make usage and the SaaS model work together
Accounts, subscriptions, credits and payments are product responsibilities alongside generation and model conversations.
Support the first real users
Production, maintenance and support extended the work beyond the initial design and development.
What the project demonstrates
Several hundred subscribers within the first few weeks.
Registered accounts and paid subscriptions during my contribution from September 2023 to January 2026. The product remains active at Promesia.
To be precise
BromeAI belongs to Promesia. I sold all of my Promesia shares in January 2026 and do not claim the product’s current developments as my work.
Visit the website BromeAIAnother project
Business platform · Physiotherapy
NeuroXTrain
A platform for physiotherapists, combining content, training, professional tools and structured administration.
A project. A team. A conversation.
An independent engagement, an employment opportunity or a product to build together. Let’s discuss the need and what I can contribute.
t.jacotot19@gmail.com