You will get Oracle Developer, Oracle PLSQL, Database Developer, Database Development
Project details
Is your Oracle database underperforming?
Need help with complex SQL queries, PL/SQL procedures, or schema design?
Struggling with slow SQL queries or complex PL/SQL logic?
I’ll help you design, write, and optimize high-performance Oracle SQL & PL/SQL code tailored to your business needs.
Whether you need stored procedures, schema design, or query tuning, I bring 10+ years of experience working with Oracle databases in enterprise environments. I focus on clean, efficient, and well-documented code that’s ready for production.
What sets this project apart?
You’re not just getting code - you’re getting a strategic partner who understands data, performance, and real-world Oracle systems from the inside out.
Need help with complex SQL queries, PL/SQL procedures, or schema design?
Struggling with slow SQL queries or complex PL/SQL logic?
I’ll help you design, write, and optimize high-performance Oracle SQL & PL/SQL code tailored to your business needs.
Whether you need stored procedures, schema design, or query tuning, I bring 10+ years of experience working with Oracle databases in enterprise environments. I focus on clean, efficient, and well-documented code that’s ready for production.
What sets this project apart?
You’re not just getting code - you’re getting a strategic partner who understands data, performance, and real-world Oracle systems from the inside out.
Database Type
MySQL, MS SQL, MS Access, Oracle, SQLite, PostgreSQLWhat's included
| Service Tiers |
Starter
$120
|
Standard
$180
|
Advanced
$480
|
|---|---|---|---|
| Delivery Time | 3 days | 5 days | 7 days |
Number of Revisions | 2 | 3 | 5 |
Number of Queries | 2 | 3 | 4 |
Query Debugging | |||
Query Optimization | |||
Query Scheduling | |||
Query Analysis | |||
Source Code |
Optional add-ons
You can add these on the next page.
Additional Revision
+$40
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About Maryna
AI Engineer | Chatbot & RAG | OpenAI | LangChain | Python | Database
100%
Job Success
Ukraine - 4:43 am local time
🚀 AI Engineer specialized in Chatbot & RAG Development — I help businesses build intelligent assistants that can understand, search, and respond using their own data.
With a solid foundation in SQL, cloud data engineering, and backend development, I now focus on creating LLM-powered systems using tools like OpenAI GPT-4, LangChain, and vector databases. From simple Q&A bots to voice-enabled assistants and document-based RAG pipelines — I build fast, reliable, and secure AI workflows.
✅ Core Specialties
📌 LLM-Powered Chatbots & Assistants
🔹 GPT-4 chatbot setup using OpenAI APIs
🔹 System prompts, function calling, JSON mode
🔹 Multi-turn conversation logic & session memory
🔹 LangChain / LangGraph for modular chatbot flows
🔹 Tool usage: calculator, search, DB query execution
📌 RAG (Retrieval-Augmented Generation)
🔹 Custom Q&A bots over PDFs, docs, websites, SQL DBs
🔹 Embedding content with OpenAI, HuggingFace, or Cohere
🔹 Vector DB setup: Supabase, Pinecone, FAISS, Weaviate
🔹 Chunking, metadata filtering, source attribution
🔹 Real-time search + response generation
📌 Moderation & Control
🔹 OpenAI Moderation API to filter harmful prompts
🔹 Message validation & logging
🔹 Content restrictions and persona enforcement
📌 Voice & Audio Bots (Optional)
🔹 Speech-to-text with Whisper (file or microphone input)
🔹 Text-to-speech (TTS) for reply audio output
🔹 CLI, web UI, or n8n workflow integration
📌 Cloud & Backend Integration
🔹 Python (FastAPI, requests, pandas) for backend logic
🔹 AWS S3, Lambda, Glue, IAM, Athena for cloud storage and ETL
🔹 Automation with n8n, GitHub Actions, Bash
🔹 JSON, CSV, Parquet input/output support
🔹 Dockerized deployments, Git version control
🚀 Experience & Strengths
🔹 10+ years in database and ERP systems (Oracle, PL/SQL)
🔹 Transitioned into AI development with hands-on RAG/chatbot projects
🔹 Strong backend engineering and data handling background
🔹 Cloud-ready and automation-focused mindset
🔹 Fast, responsive, and fluent in both business and technical logic
🔍 Keywords to find me:
Chatbot Developer, RAG, GPT-4, LangChain, LangGraph, OpenAI, Whisper, Text-to-Speech, Moderation API, Vector Database, Pinecone, Supabase, FAISS, Q&A Bot, Document QA, PDF Chatbot, Data-Powered Chatbot, Function Calling, JSON Mode, Prompt Engineering, AI Assistant, Retrieval-Augmented Generation, FastAPI, Python, GitHub Actions, n8n, S3, Lambda, Custom Chatbot, ERP Integration, SQL Chatbot, Cloud Automation, Oracle, PLSQL, SQL, AWS, Athena, Redshift, Data Engineering, ETL, Glue, ERP, Data Warehouse, Data Pipelines, Git, Cloud Data, PostgreSQL, Docker, JSON, Metabase, Data Lake, SQL Tuning, Stored Procedures, Big Data, Data Modeling, QuickSight, Airflow, Jupyter
Steps for completing your project
After purchasing the project, send requirements so Maryna can start the project.
Delivery time starts when Maryna receives requirements from you.
Maryna works on your project following the steps below.
Revisions may occur after the delivery date.
Purchase & Requirements Submission
Once you purchase the project, you'll send over your requirements—this includes a brief description, schema details, sample data (if available), and any specific goals or problem areas.
Project Understanding & Scope Confirmation
I’ll review all materials thoroughly, ask clarifying questions if needed, and confirm the scope, timeline, and deliverables with you before starting development.