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

Bullpen Talent

BrazilRemoteContract

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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

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