Complete Next.js + MongoDB SaaS Platform

Finish an existing Next.js + MongoDB SaaS platform

Project
I have a multi-tenant SaaS web app already at MVP stage. Core features are working, several are partially built, and a few third-party integrations still need to be completed. I'm looking for an experienced full-stack developer to finish the remaining work and ship a stable v1 ready for paying customers.

Full scope, feature list, credentials and codebase access will be shared after a short intro call with the shortlisted candidate — not in the public post.

Tech stack (non-negotiable)
Next.js 14 (App Router)
MongoDB (native driver, UUIDs)
Tailwind CSS + shadcn/ui
JWT auth (bcrypt)
Stripe, Resend, and a couple of other third-party APIs
If you'd propose rewriting any of this — please don't bid.

What I expect from you
Read what already exists before writing code. Duplicate fixes and rewrites will not be paid for.
Do not modify environment variables or downgrade dependencies. package.json is the source of truth.
Respect multi-tenancy. Every query must be properly scoped — I actively regression-test for data leaks.
Fixed milestones, not one lump sum. We agree deliverables up front; each is paid on completion and my sign-off.
Weekly demo + async written updates every 48h. Ghosting = contract ended.
Clean handover. Short migration notes for any DB changes; updated internal docs where relevant.
Own your commits. Meaningful messages, small PRs, no .env or secrets in the repo.