US-Based Principal Engineer | Zero Outsourcing | 25 Years in the Trenches
I provide the technical certainty that only comes from longevity. With over 100 projects completed on Upwork and experience dating back to the earliest days of the web, I build robust backend architecture that works the first time.
Current Featured Solution: Advanced Jobber & HubSpot Sync
I recently developed a custom Python listener & PHp-based integration for the service industry that automates:
Real-time Client Sync: (Create/Update) between HubSpot and Jobber.
Job Lifecycle Automation: (Create/Update) via high-performance webhooks.
If Zapier or native integrations are failing your workflow, I can build you a custom, resilient bridge.
Core Expertise:
Python & FastAPI: Modern, asynchronous, and strictly typed APIs.
API Integration & ETL: REST, GraphQL, and legacy SOAP services.
PHP & Backend Systems: Custom architecture, Laravel, and database optimization.
Data Architecture: Custom SQL design and complex JSON transformations.
Why Work With Me: You are hiring a Subject Matter Expert, not a junior developer. I do not outsource, I do not subcontract, and I do not require hand-holding. I translate business requirements into production-ready code that is documented and resilient.
API
API Documentation
PHP
JavaScript
Python
AJAX
SQL
Laravel
jQuery
MySQL
HTML
Amazon MWS
JSON
WordPress Plugin
XML
Alejandro C.
Palm Beach, Florida
$50/hr
5.0
27 jobs
My name is Alejandro, and I am a software developer with a financial accounting background in Palm Beach, FL . I create native web, desktop, and web services apps. My area of expertise lies in Node.js with SQL or NONSQL databases. Using Vue.js for reactive front end with responsive layout. I've worked with clients on data processing, custom CRM and APIs, bringing products to market as well as just making proof-of-concepts and refactoring applications.
* BackOffice (Application)
* RESTful api
* Webhook
* Logistics ERP and CRM Development
* Third Party API Integration
* Convert standalone software or re-write existing desktop application to web based application
* Refactoring software
* Ecommerce single and multi-vendor
* Multi-Tenants applications
* Custom API integrations
* Web Socket for Chats and Notifications
* Highly experienced on Stripe, PayPal and SquareUp payment implementation
Discretion and confidentiality are ensured.
If you'd like to discuss a project or ask me a question, just message me.
Thank you
API Integration
Node.js
CRM Software
AI Agent Development
Rust
ERP Software
Vue.js
Python
JavaScript
Ecommerce Website Development
Stripe
Flask
MySQL
MongoDB
Point of Sale & Payment Systems
Ecommerce Website
Electron
Ryan M.
Miami, Florida
$80/hr
5.0
63 jobs
Hi, I am a US-based Full-Stack AI Developer, Automation Expert and Technical Product Manager with 10 years of experience.
I help founders, small business owners, and early-stage startups take the stress out of software development and automation. By handling the technical side, I give you back time, focus, and peace of mind — so you can grow your business, close more sales, and do what you do best.
I have experience building custom software/applications, managing a software project's roadmap or helping to finish up an existing project. I am also well versed in API integrations and have integrated with services such as Amazon, Etsy, Stripe, Plaid, Fibery, Airtable, Twilio and many more.
In recent years, I’ve expanded my expertise to include AI-powered solutions — helping businesses integrate intelligent automation and machine learning into their workflows. From building custom GPT-based assistants to document data extraction pipelines and AI-enhanced customer service tools, I bring modern AI capabilities into production-ready applications.
Some of the tools, frameworks, and languages I am skilled in:
● JavaScript - React, Node.js
● Python - Django/Flask, LangChain, OpenAI API
● REST API Development
● API Integration Development
● AI/ML: OpenAI (ChatGPT, Whisper, DALL·E), Hugging Face Transformers, Vector DBs (Pinecone, Weaviate)
● Business Automation Tools - Zapier, Make, n8n
● Databases: PostgreSQL / MySQL / SQLite / DynamoDB
● Deployment: AWS (including Lambda, S3, Bedrock), Google Cloud, DigitalOcean, Heroku
● Document AI & Automation: Google Document AI, AWS Textract, OCR, RAG pipelines
● Front-end AI Chat Integrations (custom chat UIs with GPT-based backends)
I look forward to discussing the details of your project.
Kind Regards,
Ryan Morrison
API Development
API Integration
Product Management
Startup Company
Software Development
HTML
JavaScript
Web Design
CSS
Startup Consulting
Zapier
Python
Make.com
Airtable
John H.
St. Petersburg, Florida
$40/hr
5.0
17 jobs
I'm 21. Coding has been my passion since age 8. I am a member of the TopTal network!
I've been using AI intensively to supercharge my productivity for 2 years now. Sorry to my coworkers who got fired as a result, but when technology changes, we ALL have to adapt.
Some web developers I know are very specific in what they do. They're excellent at JavaScript, for example, but they can't code CSS or PHP at all. I'm not like them. I have broad experience from Composer to Web Host management to Calculus to Server configuration -- things that often go overlooked.
Before working with me:
- Let me know your availability windows and I will conform to your schedule. I work odd hours and often sleep polyphasically.
- Consult me if you're undecided about anything. We can call if you want. I've been in the coding space for so freaking long at this point, and it's sad for me to get paid to work on
- I like to be told the full scope (i.e. I'm working on a small part of a larger project). There are often small decisions that are impacted by the larger whole.
API
Laravel
JavaScript
PHP
Python
Mathematics
Git
Algorithm Development
Node.js
MongoDB
Shopify Apps
AI Implementation
Web Development
Deployment Automation
Web Hosting
cPanel
DigitalOcean
Ecommerce
Web Scraping
MySQL
Najeeb K.
Vero Beach, Florida
$30/hr
5.0
1 jobs
With 8 years + of experience in technology, I specialize in transforming ideas into powerful, scalable solutions across full-stack, enterprise, and AI-driven projects. I offer comprehensive expertise across JavaScript, React, Next.js and the MERN stack for seamless front-end and back-end integration, coupled with advanced skills in Express, Next.js and Laravel for performance-focused application development. I can also work on CMS platform like Wordpress.
Key Areas of Expertise:
• Web & Mobile App Development: Building responsive, high-performance applications tailored to enhance user engagement and optimize business processes.
• Artificial Intelligence Solutions: Leveraging AI to unlock insights, automate processes, and drive intelligent decision-making.
• Database Architecture: Designing and managing scalable database systems to handle large datasets and ensure data integrity, availability, and security.
• Cloud Architecture: Crafting cloud-native applications with robust architectures, optimizing resources, and ensuring seamless scaling for growth.
• CRM & ERP Development: Creating custom CRM and ERP systems that enhance workflow efficiency, improve customer management, and support data-driven decision-making.
Career Highlights:
• High-Impact Project Management: Led multiple end-to-end projects that integrated complex technologies, from AI and cloud solutions to full-stack applications, successfully increasing client productivity and operational agility.
• Cross-Platform Development: Successfully delivered mobile and web applications across iOS, Android, and desktop, adapting seamlessly to client needs and maintaining top-quality UX/UI.
• Innovation with Data and AI: Developed AI-powered features that amplified data insights and predictive capabilities, enhancing business intelligence and customer experiences.
Technologies and Tools:
• Frontend & Backend: JavaScript, Typescript, Next.js, React, MERN Stack, Laravel, Wordpress
• Database Management: MySQL, MongoDB, and database scaling solutions
• Cloud Platforms: AWS, Azure, Google Cloud Platform
• Enterprise Systems: CRM, ERP, with a focus on seamless integrations and data analytics.
My mission is to provide clients with results-oriented, scalable solutions, ensuring every project meets both immediate goals and long-term growth. If you’re ready to elevate your project with innovative, architecture-led design and hands-on expertise, let’s work together to bring your vision to life!
Regards,
Najeeb Khan
Keywords:
Full Stack Developer, Frontend Developer, Backend Developer, React Developer, Next.js Developer, JavaScript Developer, TypeScript Developer, Node.js Developer, Express.js Developer, MySQL Developer, REST API, API Integration, WordPress Developer, Elementor, Custom Website Development, Responsive Web Design, Business Website, Landing Page, Portfolio Website, E-commerce Website, Web Application, Admin Dashboard, CMS Development, Custom Web Solutions, SEO-Friendly Website, Fast Loading Website, Performance Optimization, Mobile Responsive, Cross-Browser Compatibility, Clean Code, Scalable Web Applications, Secure Web Applications, Bug Fixing, Website Maintenance, React Expert, Next.js Expert, Full Stack Web Developer, MERN Stack Developer, React Frontend Developer, Next.js Developer, Node.js API Developer, Express.js Backend Developer, WordPress Expert, Elementor Developer, Custom Website Developer, Website Redesign, Website Development, SaaS Developer, React, Next.js, Node.js, Express.js, JavaScript, TypeScript, MySQL, WordPress, Elementor, REST API, API Integration, Web Development, Front-End Development, Back-End Development, Responsive Design
JavaScript
React
Web Development
Artificial Intelligence
Database Architecture
Cloud Architecture
MERN Stack
Laravel
CRM Development
TypeScript
Next.js
MySQL
Custom Web Design
ExpressJS
Node.js
Ecommerce Website
Website Redesign
Website Customization
Website Optimization
WordPress
Stephen G.
New Smyrna Beach, Florida
$100/hr
5.0
68 jobs
I am a backend engineer from Helena, Montana with 12 years of experience and a BS in Computer Science from Purdue University. If I'm not writing code I'm either mountain biking or skiing.
I am an expert in task automation, finite state systems, data processing, data modeling, migrations, and API integrations. I have worked on dozens of projects aimed at streamlining business processes, with a focus on integrating products and services both internal and external.
Other than APIs and automation, I specialize in Asp.Net and back-end architectural design/programming, but I can take on a wide variety of projects, small start-up MVPs, micro-services, API integrations, complex data migrations, as well as larger projects that involve heavy architectural work.
My skills include:
• ASP.NET Core MVC/RazorPages/C#
• Entity Framework + Core
• MS SQL/Oracle/MySQL
• API Integrations (REST APIs, SOAP, WCF, GraphQL, plus others.)
• Automation
• ETL and Data Integrations
• Business Analysis/Project Management/Lead Development
• Expert in CRMs
Thanks for reading!
Steve
API Integration
RESTful API
SQL
ASP.NET MVC
HTML
C#
ASP.NET
JavaScript
ASP.NET Web API
Automation
PHP
CSS
ASP.NET Core
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