You will get same-week bug fix or code review for your React or Next.js project
Rising Talent
Rising Talent
Project details
Stuck on a React or Next.js bug you can't crack? Or want a senior set of eyes on your code before you ship? I'll review your project, identify the issue, and deliver a working fix with a clear explanation of what was wrong and why.
What sets this apart: I work daily on multi-service AI systems where debugging across layers is the job, not a side task. I'm comfortable tracing bugs through React state, server components, API boundaries, database queries, and third-party integrations. I find the real cause, not just the symptom.
What you get: a full review of the affected component or module, a working fix committed to your repo or delivered as a patch, and a written explanation of the root cause so you understand what happened and can prevent it next time.
Good for: a bug you can't reproduce, a component that works but feels wrong, a code review before you merge, or a second opinion on an architectural decision.
I work with React, Next.js (Pages and App Router), TypeScript, Node.js, Express, Supabase, Firebase, and Tailwind. Fast turnaround, clear communication, and I will tell you upfront if the job is larger than the stated scope before I start. No surprise invoices.
What sets this apart: I work daily on multi-service AI systems where debugging across layers is the job, not a side task. I'm comfortable tracing bugs through React state, server components, API boundaries, database queries, and third-party integrations. I find the real cause, not just the symptom.
What you get: a full review of the affected component or module, a working fix committed to your repo or delivered as a patch, and a written explanation of the root cause so you understand what happened and can prevent it next time.
Good for: a bug you can't reproduce, a component that works but feels wrong, a code review before you merge, or a second opinion on an architectural decision.
I work with React, Next.js (Pages and App Router), TypeScript, Node.js, Express, Supabase, Firebase, and Tailwind. Fast turnaround, clear communication, and I will tell you upfront if the job is larger than the stated scope before I start. No surprise invoices.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$75
|
Standard
$175
|
Advanced
$325
|
|---|---|---|---|
| Delivery Time | 2 days | 3 days | 5 days |
Number of Revisions | 1 | 2 | 3 |
Bug Investigation | |||
Fix Documentation | |||
Detailed Code Comments | - |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$25 - $150
Additional Revision
+$75Frequently asked questions
About Giannis
Full-Stack Developer | React, Next.js, Node.js | FHIR
Athens, Greece - 5:46 pm local time
Full-stack development of PoCs and production-ready applications.
What you get is a developer who has shipped production-grade applications and will treat your $400 job with the same care as a $40,000 one.
Recent work:
Aegis (aegis-ai-cds.vercel.app) - A clinical AI decision support platform I built independently. Multi-model AI pipeline with automatic failover when one model hits its rate ceiling, RAG via Supabase pgvector for semantic search, live API evidence grounding, Zod validation on every boundary, structured audit logging. Built the Next.js version first, then rebuilt the entire backend in Ruby on Rails over a weekend to benchmark both architectures.
FHIR Pulse (fhir-dashboard-five.vercel.app) - Real-time data dashboard pulling live API data through a Node.js Express proxy on AWS with server-side transformation, reducing client payload by 30%.
Summarist (yiannis-summarist.vercel.app) - Full-stack SaaS with Firebase Auth, session management, Stripe-style subscription gating, and tier-based feature access.
What I do well:
React, Next.js, TypeScript, Node.js, Express
REST API integration (Google, Meta, Stripe, Firebase, Supabase, OpenAI, Anthropic Claude, Gemini)
AI integration: chatbots, RAG pipelines, LLM orchestration, prompt engineering
Supabase, Firebase, PostgreSQL
Rapid prototyping and MVP delivery
Production bug fixes and code reviews
Background: Ten years as an ICU and ER nurse before engineering, which means I understand what it costs when software fails under pressure. Dual US and Greek citizen operating through a US LLC, no sponsorship or contractor paperwork needed. Based in Athens, Greece, fully available during US Eastern business hours for async and live collaboration.
Available immediately. I respond to messages within a few hours during weekdays.
Steps for completing your project
After purchasing the project, send requirements so Giannis can start the project.
Delivery time starts when Giannis receives requirements from you.
Giannis works on your project following the steps below.
Revisions may occur after the delivery date.
Review and Reproduce
Clone the repo, set up the environment, and reproduce the bug locally to confirm I can see what you're seeing.
Diagnose the Root cause
Trace the bug back to its source. If the real problem is larger than the stated scope, I will tell you before doing any work.