Fractional Senior Full Stack Engineer (Stabilization / AI-Generated Code)

Fractional Senior Full Stack Engineer (Stabilization / AI-Generated Code)
Location: Remote (LATAM & Eastern Europe)
Type: Contract / Fractional (10–40 hrs/week)

Overview
We’re hiring a senior, hands-on engineer to support multiple early-stage products that need stabilization.
Most projects were built quickly by non-technical founders using AI tools. As a result, codebases are often incomplete, inconsistent, or fragile.
This role is focused on reviewing, fixing, and stabilizing existing systems not just building new features.

What You’ll Do
Review and assess existing codebases (often AI-generated or founder-built)

Identify bugs, structural issues, and technical risks

Refactor and stabilize applications for production use

Improve performance, structure, and maintainability

Fill gaps in core functionality (auth, payments, backend logic)

Implement lightweight QA / testing where needed

Collaborate with engineers, QA, and project leads

Work across multiple projects as priorities shift

What We’re Looking For
5+ years of full stack experience

Strong experience working in messy / inherited codebases

Comfortable operating without full documentation

Proven ability to take products from MVP → stable product

Practical, solution-oriented mindset (not theoretical)

Strong communication and team collaboration

Comfortable in fast-moving, delivery-focused environments

Tech Stack (Flexible)
Python (FastAPI, Django) - preferred

Node.js / TypeScript

React / Next.js

Firebase, Supabase, or similar

APIs & modern web architectures

Flexibility > specialization

Engagement Model
Fractional, hourly

10–40 hrs/week depending on project load

Initial engagements ~4 weeks

Ongoing work across multiple client projects