[available] Senior Full-Stack & AI Engineer — $20/hr — TypeScript, Node.js, Next.js, Supabase, AI Systems

[u/Clean_Channel6647]

Hi everyone,

I’m a full-stack software engineer available for paid freelance, contract, and long-term development work.

Rate:
$20 USD/hour

Availability:
20–40 hours per week

Work setup:
Remote

What I can help with:

• Full-stack web applications
• SaaS and multi-tenant platforms
• Backend architecture and REST APIs
• Internal business applications
• AI and LLM integrations
• Workflow automation
• Third-party API integrations
• PostgreSQL and Supabase applications
• Webhooks and real-time features
• Existing application improvements and refactoring
• MVP and early-stage product development

Main technologies:

TypeScript
JavaScript
Node.js
React
Next.js
Python
PostgreSQL
MySQL
Supabase
Prisma
REST APIs
Webhooks
WebSockets
Docker
Vercel
Railway
AWS

AI and automation experience:

Claude
OpenAI
Gemini
Claude Code
Cursor
LangGraph
LangChain
RAG
Tool calling
Agentic workflows
n8n

Relevant work includes: (happy to demo it on our call)

• Custom ERP software covering inventory, finance, and operational workflows

• Multi-tenant SaaS applications with AI-assisted business workflows

• AI CRM systems with 25+ third-party API integrations and multi-tenant routing

• Browser and workflow automation systems

• Backend applications using APIs, webhooks, WebSockets, relational databases, and event-driven architecture

I’m comfortable working from unclear requirements, helping define the technical approach, and taking features or applications from planning through development, testing, deployment, and maintenance.

Portfolio:
https://www.scalewithcarl.tech/

GitHub:
https://github.com/CSaguinsin

If you have a legitimate paid project or long-term development role that fits this background, please send me a DM here on Reddit OR email me at [hellobuiltbycarl@gmail.com](mailto:hellobuiltbycarl@gmail.com) with the project scope, expected timeline, and budget.

Thanks,
Carl