You will get FastAPI Backend Consultation | Python, Async, PostgreSQL, API Design
Top Rated
Top Rated
Project details
Get expert help from a Senior Backend Developer specializing in FastAPI, Python, PostgreSQL, and async API design.
This consultation is ideal for teams and developers who want to build, optimize, or scale a modern, high-performance backend using FastAPI and async architecture.
Whether you need help improving your database structure, debugging slow endpoints, or designing a scalable API for production, you’ll receive actionable solutions, best practices, and clear implementation steps tailored to your project.
⸻
💡 What You’ll Get
• ✅ Architecture Review — analyze FastAPI project structure, routers, and dependencies.
• ✅ Database Optimization — improve PostgreSQL queries, indexes, and async sessions with SQLAlchemy.
• ✅ API Design Guidance — build consistent and maintainable REST endpoints using Pydantic schemas.
• ✅ Performance Tuning — handle async tasks efficiently and reduce response time with caching or Celery.
• ✅ Deployment Support — Docker setup, Alembic migrations, and AWS or cloud-ready configuration.
• ✅ Security Recommendations — JWT authentication, validation layers, and environment configuration.
This consultation is ideal for teams and developers who want to build, optimize, or scale a modern, high-performance backend using FastAPI and async architecture.
Whether you need help improving your database structure, debugging slow endpoints, or designing a scalable API for production, you’ll receive actionable solutions, best practices, and clear implementation steps tailored to your project.
⸻
💡 What You’ll Get
• ✅ Architecture Review — analyze FastAPI project structure, routers, and dependencies.
• ✅ Database Optimization — improve PostgreSQL queries, indexes, and async sessions with SQLAlchemy.
• ✅ API Design Guidance — build consistent and maintainable REST endpoints using Pydantic schemas.
• ✅ Performance Tuning — handle async tasks efficiently and reduce response time with caching or Celery.
• ✅ Deployment Support — Docker setup, Alembic migrations, and AWS or cloud-ready configuration.
• ✅ Security Recommendations — JWT authentication, validation layers, and environment configuration.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Localization, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$49
|
Standard
$99
|
Advanced
$149
|
|---|---|---|---|
| Delivery Time | 1 day | 1 day | 1 day |
Number of Revisions | 0 | 0 | 0 |
Number of Pages | 1 | 1 | 1 |
Design Customization | |||
Content Upload | - | ||
Responsive Design | - | - | |
Source Code | - | - |
23 reviews
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AP
Andrew P.
May 13, 2026
Full-Stack Developer (Python/FastAPI + SwiftUI) — Help Ship AI Language App to App Store
Great work from Yaro. Highly recommend working with him.
GR
Gavin R.
Apr 23, 2026
Part-Time Django Developer for Ongoing MVP Feature Development
Yaroaslav's work was exceptional. Efficient and high quality.
PA
Pasha A.
Mar 2, 2026
Full Stack Django and Next Developer
MS
Marc S.
Feb 16, 2026
Senior AI / Search Engineer – MVP for AI-Driven Classifieds Matching Engine
Yaroslav is a quick thinker and provides us with a proper milestone of this thinking and vision for our project. I would only but highly recommend him and would rehire him without a question.
AP
Adam P.
Jan 28, 2026
Backend Python and Supabase/Postgres Database Developer
Yaroslav was always prompt, respectful, and followed instructions well. I would hire him again for any future needs.
About Yaroslav
AI Full Stack Developer | Python, FastAPI, React | SaaS & AI Agents
100%
Job Success
Lviv, Ukraine - 5:36 am local time
You’re in the right place.
I’m a Full Stack Developer with 6+ years of experience building modern web applications, SaaS platforms, AI integrations, and high-performance APIs using Python, FastAPI, Django, React, and cloud infrastructure.
I help startups and businesses turn ideas into reliable software by combining strong backend architecture, clean frontend implementation, and practical AI integration.
Over the years, I have delivered:
• 50+ full-stack web applications
• 100+ third-party API integrations
• 20+ subscription-based SaaS platforms
• Systems handling 10M+ monthly requests
• AI-powered dashboards, automation tools, and API-based workflows
My main focus is building software that is not only functional, but also scalable, maintainable, secure, and easy to improve over time.
AI, LLM & Automation Experience
I can help you build and integrate AI-powered features such as:
✅ OpenAI API integrations
✅ AI agents and workflow automation
✅ Chatbots and AI assistants
✅ LLM-powered SaaS features
✅ Document analysis and data extraction
✅ AI summaries, recommendations, and classification
✅ RAG systems and vector search
✅ Prompt engineering and evaluation workflows
✅ LangChain, LangGraph, embeddings, and AI pipelines
Whether you need an AI chatbot, internal automation tool, document processing system, AI dashboard, or custom AI-powered SaaS product, I can help design and build the full solution from backend to frontend.
Backend Development
✅ Python, FastAPI, Django, DRF, Flask
✅ REST APIs, GraphQL, WebSockets
✅ Microservices and async architecture
✅ Celery, Redis, AsyncIO, background jobs
✅ OAuth2, JWT, RBAC, multi-tenant SaaS architecture
✅ Third-party API integrations: payments, accounting, CRM, AI services
Frontend Development
✅ React.js, Next.js, TypeScript
✅ Redux Toolkit, React Query, React Hook Form
✅ Tailwind CSS, Chakra UI, Material UI, Bootstrap
✅ SaaS dashboards, admin panels, responsive web apps
✅ SPA, SSR, SSG, reusable component architecture
Databases & Data Processing
✅ PostgreSQL, MySQL, SQLite
✅ SQLAlchemy, Alembic, Django ORM
✅ MongoDB, Redis, Elasticsearch
✅ Pandas, NumPy, ETL workflows
✅ Data processing and automation pipelines
Cloud, DevOps & Deployment
✅ AWS: EC2, S3, Lambda, ECS, RDS, CloudWatch
✅ Docker, Docker Compose
✅ CI/CD with GitHub Actions and GitLab CI
✅ NGINX, Caddy, load balancing
✅ Production deployment, monitoring, and scaling
Why clients choose me
🔹 I understand both business goals and technical implementation
🔹 I build clean, scalable, production-ready architecture
🔹 I communicate clearly and keep the process transparent
🔹 I can work independently or as part of a team
🔹 I focus on long-term maintainability, not quick hacks
If you need a developer who can build a SaaS product, an AI-powered platform, an automation system, or a full-stack web application, I’d be happy to help.
Let’s discuss your project and find the best technical solution for your business.
Ich spreche auch Deutsch und stehe Ihnen gerne für weitere Diskussionen oder Zusammenarbeit zur Verfügung.
Steps for completing your project
After purchasing the project, send requirements so Yaroslav can start the project.
Delivery time starts when Yaroslav receives requirements from you.
Yaroslav works on your project following the steps below.
Revisions may occur after the delivery date.
Share Project Information
You’ll provide a short summary of your backend, goals, and main issues. Include your FastAPI repository, architecture outline, or deployment setup (Docker, AWS, etc.) if available.