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Manuel Jr E.

Backend Developer | AI Automation & API Integrations

Verified
$15/hr

Outline

Looking for Part-Time work (6 hours/day) at $15/hour

Associate Degree

English proficiency Fluent

Professional Summary

Backend developer with experience building APIs, web applications, third-party integrations, and automation workflows. Strong background in C#/.NET, PHP, JavaScript, SQL, REST APIs, webhooks, and authentication, with hands-on experience integrating services such as Stripe, Plaid, Twilio, SendGrid, and AWS.

I also build AI-assisted automation workflows using n8n,

contactinfohChoose a plan to view contact info.

, and Zapier, connecting applications, APIs, databases, and AI services to automate repetitive processes and streamline business operations. I use modern AI development tools to speed up development, prototyping, debugging, and implementation while maintaining practical, production-focused solutions.

I can work across backend systems, API integrations, automation, and the supporting frontend when needed.

Skills & Experience

Skills

Software > Data Engineering > SQL 2-5 Years
Php 2-5 Years
Javascript 2-5 Years
Backend Developer 2-5 Years
API & Integration Support 2-5 Years
Stripe 2-5 Years
.NET Framework 2-5 Years
Database & CRM Management 2-5 Years
Workflow AI Automation Less than 6 Months
Software > Zapier 1-2 Years
C# 2-5 Years
Make.com Less than 6 Months
n8n 1-2 Years
Design > GoHighLevel Less than 6 Months

Experience highlights

Sole Developer & Project Manager
RH Financial Growth Tracker · June/2026 – /
Built production platform for sales, lead distribution, team growth. Automated lead intake workflow with Zapier, GoHighLevel, Supabase, Stripe integration. Designed database and lead-routing architecture.
Backend Developer
QuickTraffic · October/2025 – Present
Developed backend APIs for subscriptions, ad management, campaigns. Integrated Stripe subscription billing using PHP/cURL. Maintained MySQL.
Backend Developer
RCART · January/2025 – Present
Developed backend APIs for rewards and merchant management. Integrated Shopify services using PHP/cURL and maintained MySQL.
Backend Developer
Dropshop · February/2024 – Present
Developed backend APIs for rewards, credits, user participation. Integrated Stripe and SendGrid using PHP, cURL. Maintained SQL Server (MSSQL).
Backend Developer
Build · January/2023 – Present
Developed backend APIs for rewards, deposits, financial activities. Integrated Plaid, Atomic FI, , Twilio, SendGrid using PHP/cURL. Maintained MSSQL.
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