Build MVP Teams/Slack App – Weekly Pulse + Sentiment Analysis

We’re looking for an experienced developer (or small team) to build an MVP version of a lightweight employee engagement app. The app will be used alongside our consulting service, so it needs to be deployable, not just a demo.

Core requirements:
- Weekly pulse question (1–5 score + comment) sent to all users via Teams + Slack
- Ad-hoc feedback form (with configurable categories)
- Admin console (web): configure question + categories, upload users (CSV), view/export responses
- Sentiment analysis (Azure OpenAI or Cognitive Services) on comments
- Simple dashboards: average score trend, participation rate, sentiment breakdown, comment list with sentiment tags
- CSV export (Power BI/Metabase embed optional)
- Anonymous by default, with privacy guardrails (k-anonymity)

Tech assumptions (flexible):
- Backend: .NET Core or Node.js (containerised)
- Database: Postgres (preferred)
- Hosting: Azure (App Service/Functions, Blob Storage)
- Front end: React/Next.js (for admin + Teams tab)
- Identity: Entra ID (Teams) + Slack OAuth

Timeline:
- 6 weeks full time (MVP scope).

What we’re looking for:
- Strong experience with Teams or Slack apps (Adaptive Cards, bots, slash commands)
- Experience with Azure + .NET/Node + Postgres
- Evidence of NLP/AI integration (sentiment analysis, text classification)
- Able to deliver a fixed-price proposal against MVP scope

Please share examples of similar work (especially Teams/Slack apps) and your availability.