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Senior Full-Stack Engineer

Job in Northern, Floyd County, Kentucky, USA
Listing for: Essoflo
Full Time position
Listed on 2026-09-24
Job specializations:
  • Software Development
    Full Stack Developer, Backend Developer
Salary/Wage Range or Industry Benchmark: 90000 - 130000 USD Yearly USD 90000.00 130000.00 YEAR
Job Description & How to Apply Below
  • Features from the schema to the screen — a Postgres migration, the row-level security on top of it, the service layer, and the React that renders it.
  • The editor: a React Flow canvas, a table view, a document view and a presenter mode that all read and write the same procedure and have to stay in sync.
  • The AI features: drafting a procedure from a description or an uploaded document, answering questions about one, and being clear in the UI about what the model actually did.
  • Performance and correctness in a multi-tenant app, where a leak between organizations is the worst bug we could ship.
What we look for
  • Several years writing production Type Script and React, including the messy parts: state that outlives a component, data that arrives out of order, complicated forms.
  • Real Postgres experience. You can read a query plan, and you know why an access rule belongs in the database rather than in a handler.
  • You write things down: a design note before you build, and comments that explain why rather than restating the code.
  • Comfort owning a feature all the way out, including when it is live and something is wrong.
Nice to have
  • Next.js App Router and React Server Components in production.
  • Supabase, or another stack where auth, storage and the database come together.
  • Having built with LLMs somewhere real: streaming, structured output, and knowing when a model is the wrong tool.

Optional. Not having these would not rule anyone out.

The first ninety days

By ninety days you would have shipped a feature touching the database, the API and the editor, and be the person the team asks about that part of the system.

How we hire
  • 1 A thirty-minute conversation about the role and what you are looking for.
  • 2 A longer conversation about work you have done.
  • 3 A short exercise or working session, scoped and agreed in advance.
Position Requirements
10+ Years work experience
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