Full Stack Developer for SaaS Platform

Job ID: 40547627

Budget: $15 – $25 USD

Title: Senior Full Stack Developer - React + Node.js, building Trackflow SaaS platform from early stage (hourly, long term)

about Trackflow:
we are building a B2B SaaS product that helps small to mid-size teams manage workflows and automate repetitive task routing. think lighter than Jira, smarter than Trello. we have the product spec finalized, designs are done, now we need a senior developer to actually build it.
this is not a prototype or a side project. we have paying early access customers already and a hard deadline to deliver a working product.
what the stack looks like:
frontend is React with TypeScript, we are using Tailwind for styling. backend is Node.js with PostgreSQL. authentication, subscription billing via Stripe, role based access, the full SaaS infrastructure needs to be built properly from the ground up.
what we need:
someone who has built a SaaS product before, not just worked on one as a small piece. we need someone who understands the full picture, auth flows, multi-tenancy, billing integration, deployment, the works.
we are posting this as hourly because we want a long term working relationship, not a one-off job. that said the first milestone is a small fixed task so we can see how you work before we go deeper.
to apply: tell me something specific you have built that is closest to this. a live URL is worth more than a resume.