01
Workspace-based product access
Users operate inside team workspaces while product access follows the workspace and its subscription tier.
2024Delivered product scope
WriteAI.me
Multi-model AI writing SaaS
One owned product surface for workspaces, billing, model routing, and deployment.
A full SaaS platform that brings multiple model providers into one product, with team workspaces, usage tiers, Stripe billing, and containerized deployment.
Public product view
Role
Full-stack product engineering
Platform
Multi-tenant web SaaS
Delivered
2024
Evidence
Delivered product scope
01 / Context
The product problem
A multi-model writing product has to keep user workspaces, usage entitlements, billing, and provider differences coherent without tying the owner to one AI vendor. Account state and model behavior also need to evolve independently as the product grows.
Delivered system outcome
The delivered platform joined workspace access, subscriptions, model routing, and deployment into one owned product surface. Provider-specific behavior remained separated from account and billing logic, making the product easier to extend.
02 / Product scope
What the system was built to do
Each capability is tied to the public product scope. No commercial or adoption metric is inferred.
02
Multi-provider generation
A shared product flow can call different model providers without exposing every provider difference to the interface.
03
Subscription coordination
Stripe billing state and usage-tier rules are connected to account entitlements rather than treated as a separate checkout screen.
04
Repeatable deployment
Docker packaging and Kubernetes configuration provide a defined route from repository to deployed service.
03 / System flow
How the main workflow connects
- 1
A user enters a team workspace with tier-aware access.
- 2
The writing request moves through a provider-neutral application layer.
- 3
The selected model adapter handles provider-specific input and output.
- 4
Usage and subscription state remain aligned with workspace entitlements.
- 5
Containerized services are deployed through the Kubernetes configuration.
04 / Engineering
Decisions behind the delivery
The public project scope combines a Next.js product interface with a Node.js service layer, model-provider adapters, Stripe billing, and containerized deployment. Workspace and subscription state form the account boundary, while provider adapters isolate model-specific behavior.
Technology
- Next.js
- Node.js
- Multi-LLM
- Stripe
- Kubernetes
01
Keep model providers behind adapters
Provider integrations stay separate from workspace and billing behavior, reducing the cost of changing or adding a model.
02
Treat entitlements as product logic
Tier rules are enforced where product access is decided, not only in the payment interface.
03
Package the runtime consistently
Containerization reduces differences between development, deployment, and later infrastructure changes.
05 / Handoff
Delivered scope
- Team workspaces and tier-aware product access
- A unified interface for multiple language-model providers
- Stripe subscription and usage workflows
- Containerized deployment configuration for Kubernetes
Before using this as a buying reference
Contribution, review points, and evidence limits.
Founder portfolio project; this profile describes the engineering contribution, not sole ownership of the product.
Useful questions for an evidence review
- Inspect how workspace access and subscription entitlements connect to the product flow.
- Review where model-provider adapters end and account/billing logic begins.
- Review deployment and handoff scope separately from usage or commercial outcomes.
No customer-approved testimonial, acceptance report, usage benchmark, or commercial result is published here. The interface and described scope are not independent verification of production performance. Any deeper evidence review must respect client permissions.
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