Upwork home
Sign up
Project Catalog
DesignDesign
Video & AudioVideo & Audio
Development & ITDevelopment & IT
MarketingMarketing
Writing & TranslationWriting & Translation
MoreMore

You will get secure, scalable backend APIs or microservices in Golang, Python, or Java.

Henry C.Status: Offline
Henry C.
Preview image

Let a pro handle the details

Buy Web Application Programming services from Henry, priced and ready to go.
Henry C.Status: Offline
Henry C.
Preview image

Let a pro handle the details

Buy Web Application Programming services from Henry, priced and ready to go.

Project details

I build reliable, scalable backend APIs and cloud services using Golang, Python, Java, SQL, and GCP—the same stacks I use professionally to create production systems. This project is ideal for clients who need a clean, secure API, database integration, authentication, or a complete backend service that is ready for real-world workloads.

What sets this project apart is the engineering quality: clean architecture, proper validation, logging, structured endpoints, strong documentation, and optional deployment to Google Cloud. You receive a backend that is easy to scale, easy to integrate, and easy to maintain.
Programming Languages
Python, Java, Go
Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, Security
What's included
Service Tiers Starter
$50
Standard
$175
Advanced
$650
Delivery Time 3 days 6 days 14 days
Number of Revisions
125
Design Customization
-
Content Upload
-
Responsive Design
-
-
-
Source Code
Optional add-ons You can add these on the next page.
Fast Delivery
+$40 - $150
Additional Revision
+$15
Extra Endpoint (+ 1 Day)
+$40
Henry C.Status: Offline

About Henry

Henry C.Status: Offline
Flutter & React Developer | Cloud & Data Specialist | Graphics Design
Atlanta, United States - 9:32 pm local time
Hi! I’m Henry — a full-stack Software Engineer with professional experience at The Home Depot, building production systems using Flutter, React, Golang, Python, Java, and Google Cloud Platform every day.

I design and build mobile apps, web applications, backend APIs, cloud systems, automation pipelines, and data-driven dashboards. I also have experience in ML models, forecasting, and sports analytics, plus creative work in video editing and graphics.

Technical Expertise

📱 Mobile Development
• Flutter (daily production experience)
• Cross-platform apps (iOS/Android)
• State mgmt: Bloc, Riverpod, Provider
• API integration, Firebase, GCP services

💻 Frontend / Web Development
• React.js + modern component design
• Responsive UI, dashboards, data visualizations
• REST/GraphQL integrations
• Web services + cloud deployment

⚙️ Backend Development
• Golang, Python (FastAPI/Flask), Java (Spring)
• REST API design + microservices
• SQL/NoSQL database design
• Authentication (JWT/OAuth)
• GCP Cloud Run, Functions, BigQuery

📊 Data Engineering & Analytics
• Python (Pandas, Scikit-learn)
• Forecasting + modeling
• Sports analytics tools
• Data visualization dashboards

🎬 Video Editing & Graphics
• Adobe Premiere Pro, After Effects
• Short-form social edits, promos, transitions
• Clean, modern motion graphics

Why work with me?

✓ Engineering experience at enterprise scale
✓ Clean, maintainable architecture
✓ Strong communication + fast iteration
✓ Ability to handle frontend, backend, and mobile
✓ Data + design experience (rare combo)

If you need help with a new app, a backend API, a React UI, a cloud deployment, or a data project — I can take it from idea to production. Let’s build something great.

Steps for completing your project

After purchasing the project, send requirements so Henry can start the project.

Delivery time starts when Henry receives requirements from you.

Henry works on your project following the steps below.

Revisions may occur after the delivery date.

I review requirements and outline architecture

Backend/API development begins

Review the work, release payment, and leave feedback to Henry.