You will get 🚀 Build Backend API with FastAPI from Scratch, Python Developer
Project details
I will build a fast, secure, and production-ready REST API using FastAPI, one of the most modern and high-performance Python frameworks. My approach combines clean architecture, thorough validation, and professional documentation so your backend is easy to maintain and scale. You’ll get a fully tested API ready for deployment, with clear endpoints, detailed Swagger documentation, and optional Docker setup. What sets my work apart is my focus on reliability, clarity, and developer experience — ensuring you receive not just code, but a well-structured solution built to last.
Programming Languages
PythonCoding Expertise
DesignWhat's included
| Service Tiers |
Starter
$100
|
Standard
$250
|
Advanced
$500
|
|---|---|---|---|
| Delivery Time | 3 days | 7 days | 14 days |
Number of Revisions | 2 | 3 | 4 |
Number of Pages | 1 | 3 | 5 |
Design Customization | |||
Content Upload | - | ||
Responsive Design | - | - | - |
Source Code |
Frequently asked questions
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AV
Alexey V.
Dec 7, 2025
Authentication Microservice + External Data Scraper API
Denys is an excellent Python Engineer. He built a clean authentication microservice, implemented a reliable scraping module, and set up background task processing with Celery to keep the system fast and scalable. He delivered well-structured API endpoints, ensured smooth integration with our internal dashboard, and communicated clearly throughout the project. I highly recommend Denys!
WT
Walid T.
Jul 18, 2025
ML Help Needed – Tune & Fix Strategy Scoring Loop (Bayesian + Transformer)
FA
Floris A.
Jul 3, 2025
Backend Engineer Needed for Automating Stable Diffusion Training Pipeline
Denis has delivered all requirements and even went above and beyond! Has been an excellent communicator and gave multiple updates for the progress. Highly recommend and will definitely work again in the future!
About Denis
Full-Stack Developer | Full-Stack Developer Python | Free Consultation
100%
Job Success
Kharkiv, Ukraine - 8:26 am local time
Thinking of building a web app or bot? I’m offering a free session to help you skip the "trial and error" phase. Having built 10+ production-ready apps and bots from scratch, I help you bridge the gap between an idea and a working product.
I build things that actually work not only on my local machine.
I've spent years building web apps with Python and React.
Here are some things I've done:
* Built 10+ bots and web apps for users
* Used Python, React, Django, Flask, REST APIs and Docker
* Full-stack development from start to finish
• Web Apps & APIs:
Most of my work is on the backend:
* Django and Flask APIs
* PostgreSQL databases
* Authentication flows
* Integrating with services
On the frontend I use React with Vite or Next.js. and build functional user interfaces.
• Bots & Automations
I use aiogram, webhooks and async handler to build Telegram and Discord bots.
• Infra & Deployment:
Docker is part of my workflow.
I compose files, containers and GitLab CI/CD or GitHub Actions.
• How I Actually Work:
* I ask questions before I start coding
* I push updates without being reminded
* If somethings unclear I flag it
• Good Fit If:
* You need working software, not someone who agrees with you
* Your stack is Python or React (or both)
* You want someone who takes ownership of the task
Keywords:
React / Next.js | Node.js | TypeScript | Full-Stack Development| Supabase | PostgreSQL | REST API Development | Express.js | Tailwind CSS | API Integration | Stripe | OpenAI API | Vercel | Docker | JavaScript | MongoDB |Firebase |AWS |LangChain |Web Application Development
Steps for completing your project
After purchasing the project, send requirements so Denis can start the project.
Delivery time starts when Denis receives requirements from you.
Denis works on your project following the steps below.
Revisions may occur after the delivery date.
Discovery & Requirements
Gather project goals, endpoint list, data models, authentication needs, integrations, and deployment preferences. I’ll confirm scope, acceptance criteria, and any existing docs or examples.
API Design & Specs
Design routes, request/response schemas, and data models. Produce a small OpenAPI/Swagger spec draft for your review before coding.