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United States
$80/hr
100%
Job Success
$100K+ earned
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Back-end programming
* Expert-level Database Design and Implementation.
* Extensive experience in back-end application development, accessing databases for both extraction and update.
* Experienced in API development, both as client (e.g., importing data from external vendor API) and server (writing RESTful APIs).
General programming
* Highly experienced in maintenance of existing legacy code, as well as new development.
* Excellent coding and bug-fixing skills in Python, Perl, C, PHP and Pick Basic.
* Desktop applications using Python tkinter.
* Many years experience in process automation.
Databases: MySQL, PostgreSQL, SQLite, Oracle, SQL Server, Access
Source control: Git, CVS, SVN, Perforce
Specialty: Finding solutions to difficult problems.
$11/hr
$300+ earned
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I’m a developer experienced in building desktop/web application using Oracle Developer 6i, 9i, 10g or 12c, Oracle database, also another things like troubleshoot server (windows/linux/solaris), create Batchfile for productivity, Python, Machine Learning, Rapid Miner for Data Mining. Knows HTML and CSS3, PHP, jQuery, Wordpress.
Regular communication is important to me, so let’s keep in touch.
$35/hr
$100+ earned
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Proactive Oracle APEX Developer/Consultant with over 4 years of experience in Oracle APEX Application development and deployment.
Proven skills in CI/CD pipeline management, Oracle Restful Api's development (ORDS) , database maintenance and establishing business requirements for software development. Well-versed in OCI, Oracle APEX, SQL and PL/SQL.
$50/hr
100%
Job Success
$5K+ earned
Offers consultations
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I am an Oracle Apps/Fusion Techno Functional Consultant with 20+ years of experience in various projects across the globe. I done multiple full cycle implementations Projects as well as Support Projects. Worked on Design and Development of Customizations, Personalization, Reports, Interfaces, Conversions, Extensions. Skilled in PL/SQL, Workflow, XML Publisher, Forms, Oracle Discoverer Builder, AME ,Java, WebADI .
Provide Functional and technical support for Oracle Fusion Revenue Management .
India
$25/hr
100%
Job Success
$8K+ earned
Available now
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I'm a seasoned full-stack developer with over 12 years of professional experience in designing and developing robust, scalable solutions across web, mobile and database platforms. I’ve successfully delivered complex projects for clients in both government and public domains, with a strong focus on security, performance and maintainability.
My core competency skills are as following:
Languages & Frameworks: Java, Python (Flask), Ruby on Rails (RoR), PHP, JavaScript (Node.js, React.js)
Database Expertise: MySQL, PostgreSQL, Oracle, MongoDB, MariaDB
CMS & E-Commerce: WordPress, WooCommerce, Drupal, Magento
Mobile & Web Technologies: HTML5, CSS3, Responsive Design
API Integration & Backend Services: REST APIs, microservices, backend architecture
Associated with
KALITRA TECHNOLOGIES OPC PRIVATE LIMITED
$8K+
earned
$30/hr
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CERTIFICATIONS:
+ Oracle APEX Cloud Developer Professional (1Z0-771)
+ Oracle Analytics Cloud 2025 Professional (1Z0-1041-25)
+ Oracle Cloud Infrastructure 2025 Foundations Associate (1Z0-1085-25)
CORE COMPETENCIES:
+ Extensive experience with Cloud-to-on-premise integrations involving TechOne, Aurion, Salesforce (Bulk API 2.0), and other SaaS solutions.
+ Enterprise-level expertise in Oracle APEX, SQL, and Advanced PL/SQL for rapid application development.
+ Proficient in designing, development and implementing ERP core and custom modules.
+ Proficient in translating relational models into dimensional models.
+ Expert in OAC, OBIEE/OAS, Tableau, BI Publisher, and SmartView.
+ Skilled in Talend Open Studio and MuleSoft for complex data orchestration.
+ Deep domain knowledge in Housing, Construction, Textile, Manufacturing, Education, and Retail.
KEY PROJECTS AND ACHIEVEMENTS
CORE ERP DEVELOPMENT: Served as a key member of the design and development team for a comprehensive ERP system. Successfully delivered 15+ core modules tailored for the Textile, Housing, and Manufacturing sectors.
ENTERPRISE IMPLEMENTATIONS: Have successfully led and completed 50+ implementations over my career, ensuring seamless system adoption and operational efficiency across diverse business environments.
END-TO-END BI ARCHITECTURE: Expert in the full lifecycle of OBIEE, OAS, and OAC development. This includes the initial design of the Data Warehouse, complex Dimensional Modelling, RPD modelling, and the delivery of high-performance OAC dashboards.
END-TO-END INTEGRATION: Architected and deployed complex integration solutions for TechOne, Aurion, and Salesforce (utilizing Bulk API 2.0) to streamline cross-platform data flow.
TABLEAU ECOSYSTEM: Developed and published complex data models and interactive dashboards across multiple agile sprints, enabling data-driven decision-making.
DATA GOVERNANCE: Implemented the Erwin Data Intelligence suite, with a primary focus on establishing clear data lineage between bespoke systems, data warehouses, OBIEE, and Tableau.
CLOUD MONITORING: Engineered a robust TechOne Cloud status monitoring solution using Talend Open Studio, which I later migrated to MuleSoft to provide superior scalability and performance.
$39/hr
100%
Job Success
$400K+ earned
Available now
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💼 Python Developer | Python Django | Python Web Scraping | Python Full Stack Developer | Python AI | Python Automation
🏆 TOP RATED PLUS | 💰 $5M+ Client Revenue | 💼 111+ Projects Delivered | ✅ 11,000+ Upwork Hours
💡 Clients Achieved:
🚀 Raised $4.9M+ / $9.4M+ / $6M+ after product development
📈 Scaled platforms to millions of users & billions of operations
⚡ Reduced system load & response time with optimized Python architectures
💰 Automated payments, workflows, and analytics → higher ROI & efficiency
🏥 Built secure, compliant systems (HIPAA, GDPR) used by global organizations
I am a Python Developer, Python Full Stack Developer, Python AI Developer, and Python AI Engineer with 10+ years of experience building scalable web platforms, SaaS products, AI systems, and high-performance backend architectures. As a Python Developer, I specialize in designing clean architecture, scalable systems, performance optimization, and production-ready solutions that support real business growth.
I work as a Python Full Stack Developer (Python + React / Next.js), combining powerful backend engineering with modern frontend development to deliver complete end-to-end applications. My expertise includes Python Django development, Flask development, and FastAPI development, building robust APIs, microservices, and distributed systems.
I am also a Python Automation Engineer and Python Web Scraping Specialist, building intelligent automation systems, data extraction pipelines, and large-scale Python web scraping solutions for business intelligence, analytics, and AI-driven data processing. I design reliable scraping architectures that handle complex, high-volume data at scale.
As a Python AI Developer, I build AI-powered applications, NLP systems, automation workflows, and data-driven intelligent platforms integrated with modern Python frameworks and cloud infrastructure.
⚡ Core Expertise as a Python Developer
Python Full Stack Development (Python + React / Next.js)
Python Django Developer, Flask Developer, FastAPI Developer
Python AI Development & Machine Learning Integration
Python Automation Engineering for business workflows
Python Web Scraping & Data Extraction Systems
Scalable backend systems, APIs, and microservices
Cloud & DevOps (AWS, Docker, CI/CD pipelines)
High-performance, production-grade Python systems
🚀 Selected Projects
The Skills ($4.9M raised) 🎓 – Built and scaled an e-learning platform with payments, subscriptions, and mobile apps. As a Python Developer, helped launch a product used by thousands of users worldwide.
Veeqo (acquired by Amazon) 📦 – Developed retail infrastructure processing £1B+ in orders. Optimized backend performance, integrated Stripe, and reduced server load using AWS Lambda as a Python Developer.
Creyos (75K+ users, healthcare) 🏥 – Built a HIPAA-compliant cognitive assessment platform used by global research institutions. As a Python Developer, worked on secure data systems, scaling, and performance.
CityFALCON ($6M raised) 📊 – Created a real-time NLP-powered financial news platform processing millions of articles daily. Designed scalable backend architecture as a Python Developer.
⚡ What I Deliver as a Python Developer
Clean, scalable Python AI systems and backend architectures
High-performance Python Django / Flask / FastAPI applications
Python Full Stack Development (React / Next.js integration)
Python Automation & Python Web Scraping solutions
AI-powered Python applications and intelligent workflows
Secure, compliant systems (GDPR, HIPAA-ready architectures)
End-to-end product delivery from idea to production
Client Testimonials
⭐⭐⭐⭐⭐ “Very professional! Pleasure to work with. Will definitely use again.”
⭐⭐⭐⭐⭐ “Super reliable, fast, and with clean, well-structured code. Communication was smooth and always on time.”
⭐⭐⭐⭐⭐ “Very satisfied with the work.”
💼 Why Clients Work With Me
10+ years of proven experience as a Python Developer
Strong expertise in Python Full Stack, Python AI, and Python Web Scraping
Ability to scale systems from MVP to enterprise-level platforms
Deep understanding of backend architecture and system design
Reliable communication and predictable delivery
🚀 Let’s talk about your project - I am available as your Python Developer, Python Full Stack Developer AI React, Python AI Developer, Python Automation Engineer, Python Django Developer, and Python Web Scraping Specialist.
Associated with
Sloboda Studio
$1M+
earned
$30/hr
100%
Job Success
$30K+ earned
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I’m a hands-on enterprise software professional with 14+ years of experience building scalable, process-driven solutions using leading AI, RAG, AI Agents, Agentic AI workflows implementation and collaboration, Vector DB, Graph DB, BPM platforms like Camunda 7 BPM, Camunda 8 BPM (Zeebe), Flowable BPM, Activiti BPM, and JBPM with Spring boot micro services and Python. I’ve helped clients design, automate, and optimize complex business processes for banking, insurance, government, and finance sectors.
💼 What I Do Best
✅ AI & LLM Integration | Intelligent Automation | RAG | Agentic Workflows | N8N (AI Autumation) | Airtable
- AI-powered chatbot assistants using OpenAI GPT models, Claud and Ollama (Mistral, Llama), Claud with Python FastAPI, Claude and OpenAI Agents SDK.
- Semantic search pipelines using vector db(FAISS and Qdrant), Graph DB(Neo4j), enabling Retrieval-Augmented Generation (RAG) for high-relevance contextual responses. Voice agent platform(RetellAI).
- Built custom AI agents with tool usage and memory, orchestrated using LangChain /Langgraph / Agentic frameworks(CrewAI) for multi-step automation tasks and N8N AI workflow automation.
- Seamlessly integrated AI assistants into Business Process Management (BPM) workflows (e.g., Camunda) to optimize decision making and automate repetitive user interactions.
- Automated agentic workflows for tasks like retrieve incident status, details, cancellation requrest, get incident details via email, create incident, text summarization for form fields, document summarization, incident triage, ticket classification, and knowledge base augmentation.
-Auto email responder using, email notifications, whatsapp notifications, SMS, telegram notifications using multi agents workflows.
✅ Business Process Automation
- Camunda 7 / Camunda 8 (Zeebe) / Flowable / JBPM / Activiti BPM
- Process modeling (BPMN), DMN, and custom workflow engines
- Drools, Zen(GoRules) rule engine and complex decision automation
✅ Backend & Microservices Development
- Java (Spring Boot, Spring Security, JPA, Hibernate)
- Python (FastAPI) for high-performance APIs and AI integrations
- RESTful API design, OAuth2, JWT, Keycloak-based security
✅ ETL Tools
- Apache NiFi
- Apache Airflow
✅ DevOps & Cloud Deployments
- Docker, Kubernetes (EKS, ECS)
- CI/CD with Jenkins, GitHub Actions
- AWS (EC2, S3, Lambda, CloudWatch, API Gateway etc.)
✅ Integrations & Messaging
- Apache Kafka (Confluent), RabbitMQ, Apache Camel
- Elasticsearch, Apache Solr, Lucene for advanced search
- Payment gateways: Stripe, Razorpay, PayPal, Moneris
✅ Frontend Capability (with expert UI/UX team)
- Angular, ReactJS, NodeJS
- PSD/XD to responsive HTML, Tailwind, Material UI
🎓 Corporate Trainings & Mentorship
I offer professional training programs (remote/onsite) on:
- Camunda 7 / Camunda 8 (Zeebe)
- Flowable / Activiti / JBPM
- Elasticsearch
✅ Why Clients Work With Me
- Deep domain knowledge in AI + BPM + Microservices
- Strong architecture, documentation & code quality
- Proven track record delivering enterprise-grade systems
- Ability to lead full project lifecycle — from POC to production
💬 Let’s connect and discuss how I can automate and optimize your business with smart workflows, secure APIs, and cloud-native systems.
$12/hr
100%
Job Success
Available now
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🚀 Legacy Application Modernization Expert | Azure Solutions Architect | Full-Stack Developer
🏢 Most businesses aren't starting from scratch. They're running systems that have been supporting their operations for years, sometimes decades. Those systems matter because employees, customers, and day-to-day operations depend on them every single day.
🔄 The challenge isn't building something shiny and new. It's improving what already works without disrupting the business, frustrating users, or creating unnecessary risk. Modernization should feel like progress, not a painful rebuild.
🤝 That's where I can help.
Over the past 18+ years, I've worked with companies facing the same concerns:
💭 "Our system still works, but it's getting harder to maintain."
💭 "We need to move to the cloud, but we can't afford downtime."
💭 "We want to modernize, but we don't want to lose years of business knowledge."
I understand those challenges because I've helped organizations navigate them successfully.
My focus is helping businesses upgrade, migrate, and modernize legacy applications built with ColdFusion, PHP, Drupal, and other enterprise technologies. The goal is simple: make systems more reliable, secure, scalable, and easier to maintain while keeping your business running smoothly.
🛠️ What I Can Help You With
✅ Legacy Application Modernization (ColdFusion, PHP, Drupal)
✅ Cloud Migration & Architecture (Azure & AWS)
✅ Enterprise Web Application Development
✅ API Integrations (Stripe, PayPal, Twilio, Social Media APIs, DocuWare)
✅ Database Optimization (SQL Server, MySQL, Oracle)
✅ Laravel, WordPress, Drupal & Custom CMS Solutions
✅ Performance Improvements & Technical Debt Reduction
✅ System Upgrades, Refactoring & Long-Term Maintenance
Over the years, I've partnered with startups, growing businesses, and enterprise teams. While every project is different, the goal is usually the same:
📈 Improve Performance
🔒 Strengthen Security
⚡ Increase Reliability
💰 Reduce Long-Term Costs
🌱 Support Future Growth
⭐ Why Clients Choose to Work With Me
✔️ 18+ Years of Real-World Experience
✔️ Deep Understanding of Both Legacy and Modern Technologies
✔️ Solution Architect and Hands-On Developer
✔️ Clear, Honest Communication
✔️ Focused on Business Results, Not Just Code
Technology changes quickly, but one thing stays the same: businesses need solutions they can trust.
📩 If you're dealing with a legacy application, planning a cloud migration, or trying to figure out the best path forward, I'd be happy to learn more about your situation and discuss how I can help.
$30/hr
100%
Job Success
$100K+ earned
Start of list.
End of list.
🟢 Available Now | 100% Job Success
🔥 𝗠𝗬 𝗗𝗔𝗧𝗔 𝗠𝗔𝗦𝗧𝗘𝗥𝗬 𝗣𝗔𝗖𝗞𝗔𝗚𝗘 - 𝗢𝗣𝗧𝗜𝗠𝗜𝗭𝗘 𝗬𝗢𝗨𝗥 𝗗𝗔𝗧𝗔 𝗜𝗡𝗙𝗥𝗔𝗦𝗧𝗥𝗨𝗖𝗧𝗨𝗥𝗘 𝗜𝗡 𝗝𝗨𝗦𝗧 𝟰 𝗪𝗘𝗘𝗞𝗦 𝗪𝗜𝗧𝗛 𝗣𝗘𝗥𝗙𝗢𝗥𝗠𝗔𝗡𝗖𝗘 𝗔𝗦𝗦𝗨𝗥𝗔𝗡𝗖𝗘:
✓ Data Collection & Analysis
✓ Optimized Data Retrieval
✓ Designing & Implementing Database Objects
✓ Performance Tuning
✓ Complex Query Handling (MS Server, MySQL, Oracle, Access etc)
✓ Develop Stored Procedures, Functions, Triggers (T-SQL, PL/SQL etc)
✓ Develop Entity-Relation Diagrams (ERD) (tools: PowerDesigner, ER studio, draw.io)
✓ Data Migration Between Different RDBMS (for example Oracle and MS SQL Server)
✓ Remove duplicates from database
✓ Create all Necessary Views, Indexes
✓ Upload Data From Different Sources (Excel, CSV, another databases)
✓ Data Visualization (Power BI)
✓ Data Quality Assurance
✓ Daily Updates
✓ 30-Day Post Project Chat Support
✓ Over 4k total working hours on Upwork
+ 🎁𝗕𝗢𝗡𝗨𝗦𝗘𝗦:
✓ Schema Audit: Detailed audit and report to enhance your database structure.
✓ Build Reports and Visualizations: Gain clarity with custom reports and visualizations to provide clear, actionable insights.
✓ Monthly Performance Review: Regular reviews and optimizations for sustained performance.
🤝 𝗠𝗬 𝗚𝗨𝗔𝗥𝗔𝗡𝗧𝗘𝗘:
I guarantee measurable improvements in data retrieval times and data accuracy, providing you with clear, actionable insights.
If you're not happy with the progress within the first month, I will work with you at no additional cost until we meet your expectations.
𝗣𝗥𝗢𝗩𝗘𝗡 𝗧𝗥𝗔𝗖𝗞 𝗥𝗘𝗖𝗢𝗥𝗗: I have a proven track record of improving data retrieval efficiency and data integrity in previous roles, which means you can trust in the results I deliver.
𝗚𝗨𝗔𝗥𝗔𝗡𝗧𝗘𝗘𝗗 𝗥𝗘𝗦𝗨𝗟𝗧𝗦: I guarantee measurable improvements in data retrieval times and data accuracy, providing you with clear, actionable insights.
𝗖𝗢𝗦𝗧 𝗘𝗙𝗙𝗜𝗖𝗜𝗘𝗡𝗖𝗬: By optimizing your data processes, I help reduce operational costs through improved data management and reduced redundancy.
𝗘𝗡𝗛𝗔𝗡𝗖𝗘𝗗 𝗗𝗘𝗖𝗜𝗦𝗜𝗢𝗡-𝗠𝗔𝗞𝗜𝗡𝗚: My expertise ensures that your data infrastructure will provide accurate, timely, and actionable insights, driving strategic business decisions.
𝗙𝗟𝗘𝗫𝗜𝗕𝗜𝗟𝗜𝗧𝗬 𝗔𝗡𝗗 𝗔𝗗𝗔𝗣𝗧𝗔𝗕𝗜𝗟𝗜𝗧𝗬: I adapt quickly to your existing systems and processes, minimizing disruption and maximizing integration efficiency.
𝗜𝗠𝗠𝗘𝗗𝗜𝗔𝗧𝗘 𝗔𝗩𝗔𝗜𝗟𝗔𝗕𝗜𝗟𝗜𝗧𝗬: I’m immediately available for new opportunities, ensuring a swift start to your projects.
𝗛𝗜𝗚𝗛 𝗥𝗘𝗦𝗣𝗢𝗡𝗦𝗘 𝗥𝗔𝗧𝗘: My response rate is within 1 hour, ensuring I’m always in touch while discussing work opportunities and during project execution.
You can start with:
🔍 𝗙𝗥𝗘𝗘 𝗦𝗖𝗛𝗘𝗠𝗔 𝗔𝗨𝗗𝗜𝗧
I conduct a detailed review of your current database schema, identifying key opportunities for improvement. You'll get actionable insights and recommendations with minimal effort from you!
💬 𝗦𝗧𝗔𝗥𝗧 𝗔 𝗖𝗛𝗔𝗧 𝗧𝗢 𝗗𝗜𝗦𝗖𝗨𝗦𝗦 𝗛𝗢𝗪 𝗠𝗬 𝗦𝗞𝗜𝗟𝗟𝗦 𝗔𝗡𝗗 𝗘𝗫𝗣𝗘𝗥𝗜𝗘𝗡𝗖𝗘𝗦 𝗔𝗟𝗜𝗚𝗡 𝗪𝗜𝗧𝗛 𝗬𝗢𝗨𝗥 𝗡𝗘𝗘𝗗𝗦. 𝗜'𝗠 𝗢𝗡𝗟𝗜𝗡𝗘 𝗔𝗡𝗗 𝗥𝗘𝗔𝗗𝗬 𝗧𝗢 𝗖𝗛𝗔𝗧!
🛠️ 𝗦𝗞𝗜𝗟𝗟𝗦
- SQL Query Optimization
- Database Normalization
- Data Profiling & Analysis
- Data Integration
- Performance Tuning
- Schema Design & Auditing
- Automated Reporting
- Data Visualization
- Advanced SQL Training
- Power BI
- SSRS
- SQL Server
- Data Quality Management
- Complex Query Handling
- Python (Pandas, NymPy)
- PowerShell scripting
Pavlo P.
has worked
.