You will get Custom AI Backend Development | FastAPI | Flask | Production-Ready API
Project details
📌 Build a powerful AI-powered backend tailored to your business. I deliver scalable, secure, and cloud-ready Python backend systems.
Deliverables:
✅ Custom backend architecture design
✅ REST API development and implementation
✅ AI model integration
✅ Database setup
✅ Dockerized deployment
🧰 Tech stack: Python, FastAPI, Flask, PostgreSQL, Redis, Docker, AWS, SQLAlchemy
⚠️ Please Contact Me Before Purchasing
Before placing an order, please send me a message with your project details.
I need to review your requirements to confirm scope, timeline, and the appropriate service tier.
Deliverables:
✅ Custom backend architecture design
✅ REST API development and implementation
✅ AI model integration
✅ Database setup
✅ Dockerized deployment
🧰 Tech stack: Python, FastAPI, Flask, PostgreSQL, Redis, Docker, AWS, SQLAlchemy
⚠️ Please Contact Me Before Purchasing
Before placing an order, please send me a message with your project details.
I need to review your requirements to confirm scope, timeline, and the appropriate service tier.
AI Development Type
Deep Learning, Knowledge Representation, Model Tuning, Recommendation System, Software MaintenanceAI Tools
Amazon SageMaker, Azure Machine Learning, Google AutoML, Keras, MATLAB, MLflow, NVIDIA AI Platform, OpenCV, PyTorch, TensorFlowAI Development Language
PythonWhat's included
| Service Tiers |
Starter
$2,250
|
Standard
$4,500
|
Advanced
$8,100
|
|---|---|---|---|
| Delivery Time | 28 days | 49 days | 70 days |
Number of Revisions | 1 | 1 | 2 |
AI Model Integration | - | - | - |
Detailed Code Comments | - | - | - |
Knowledge Graph | - | - | - |
Model Documentation | - | - | - |
Ontology | - | - | - |
Source Code | - | - | - |
Taxonomy | - | - | - |
About Oleksii
AI Python Developer | AI Automation | FastAPI Backend Developer | RAG
Lviv, Ukraine - 9:47 pm local time
I have 10+ years of experience in Python backend development, building scalable systems using FastAPI, Flask, and Django. My expertise includes AI/LLM systems, machine learning, data engineering, and cloud infrastructure, as well as DevOps, MLOps, and automation workflows. I focus on delivering production-ready solutions that are reliable, scalable, and built for real-world usage.
🏆 RECENT PROJECT OUTCOMES 🏆
• Data Platform | SaaS: Re-architected a Big Data survey US platform, led legacy system migration ensuring 100% data integrity, built data pipelines with +170% performance improvement, 99.9% uptime, supported 50,000 daily users.
• Real Estate PropTech | AI Agents: Built an AI-powered market price monitoring system with ML models and automated data extraction pipelines. Achieved 94% prediction accuracy, increased data value by 400% through data transformation, saved 500 hours/month, aggregated data from 25 sources.
• E-commerce | Big Data Analytics: Developed ETL pipelines and analytical workflows for large-scale datasets. Achieved +50% pipeline performance, 300% faster processing, handled 10,000,000 records daily, orchestrated 500 automated data tasks/day.
• LegalTech | AI Document processing: Designed an AI-powered document processing system for patent analysis with data extraction. As a result - 80% reduction in manual review, 91% extraction accuracy, saved 150 hours/month for legal teams, processed 20,000 documents/month, reduced processing time from 2 hours to 3 minutes.
• Automotive | Backend & DevOps: Migrated backend infrastructure, implemented automated deployment. Achieved zero-downtime deployments, 70% faster release cycles, reduced deployment time from 30 minutes to 1 minute, integrated 27 external services, supported 3,000 daily active users.
• Healthcare | AI Document processing: Built an AI product from zero for document intelligence. Created PoC in 2 months, MVP in 4 months, 67% faster document processing, supported 10,000 requests/month, reduced manual workload by 700 hours/month.
• Computer Vision | Social Platform: Developed an image classification system with custom neural networks. Achieved 96% model accuracy, processed 100,000 images/day, reduced manual moderation time by 70%.
📌 SERVICES (WHAT I CAN BUILD FOR YOU) 📌
• Backend & API Development: Scalable SaaS backends, web platforms and high-performance APIs that support real users and business growth.
• Data & Automation: Data Extraction, data pipelines, analytics systems, and workflow automation that reduce manual work and save time.
• AI / LLM Systems: AI agents, chatbots, Prompt engineering, RAG pipelines, LLM-powered applications, document processing, and AI models that automate decision-making.
• Architecture & Integrations: Microservices and system design with seamless third-party API integrations.
• Cloud & DevOps: Scalable infrastructure, CI/CD pipelines, and high-load systems built for reliability and performance.
✏️ STACK ✏️
• Backend development: Python, FastAPI, Django, Flask, Django REST
• Data: PostgreSQL, MySQL, MongoDB, SQLite, Snowflake, SQL, PySpark, Pandas
• Cloud: AWS (Lambda, S3, EC2, RDS, API Gateway), GCP, Azure, Docker, Kubernetes
• Streaming: Apache Kafka, Celery, Redis
• AI / LLM: OpenAI, ChatGPT, Claude, Embeddings, LangChain, LangGraph, HuggingFace, RAG
• ML: PyTorch, TensorFlow, Scikit-learn
• Agents & Voice: CrewAI, AutoGen, Deepgram
🎯 WHAT CLIENTS SAY 🎯
⭐️⭐️⭐️⭐️⭐️ "Thanks for exceptional execution and speed. He launched an AI system in record time. Direct impact on our revenue within the first months!"
⭐️⭐️⭐️⭐️⭐️ "Best AI/LLM implementation we've seen. One of those rare specialists who can both architect and execute. If your project is complex, this is the person you want on it."
🫡 ROLES I TAKE ON 🫡
• AI / LLM Engineer in Python - building production-ready AI systems, RAG pipelines, and LLM-powered apps
• AI Agent Python Developer - designing multi-agent systems and workflow automation with Python
• Python Backend Developer (FastAPI / Django) - building scalable APIs and SaaS backends
• Machine Learning Engineer in Python - developing predictive models and NLP systems
• Data Engineer (Python) - designing automated ETL pipelines and large-scale data systems
• Cloud / DevOps Engineer (AWS, GCP) - delivering scalable infrastructure and CI/CD pipelines automation
• RAG & Document AI Developer in Python - developing document processing systems, embeddings, and knowledge retrieval
• Python System Architect Developer (Microservices / AI Systems developer) - designing high-load, distributed architectures
👉 Looking to build an AI or LLM-powered system? Click “INVITE TO JOB” to reach out, I’m happy to discuss your project and suggest the best approach!
Choose the best AI engineer and Python developer to build data platforms, APIs, automation systems, and scalable web applications together!
Steps for completing your project
After purchasing the project, send requirements so Oleksii can start the project.
Delivery time starts when Oleksii receives requirements from you.
Oleksii works on your project following the steps below.
Revisions may occur after the delivery date.
Discovery
At this initial stage we define your goals, expectations, system and success metrics to deliver the best results
Execution
Custom backend architecture design, REST API development and implementation, AI model integration/ Database setup/ Dockerized deployment