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Md. Isbat R.

Chittagong, Bangladesh

$30/hr
5.0
22 jobs

Nearly a ๐—ฑ๐—ฒ๐—ฐ๐—ฎ๐—ฑ๐—ฒ ๐—ผ๐—ณ ๐—ข๐—ฟ๐—ฎ๐—ฐ๐—น๐—ฒ ๐—ฒ๐˜…๐—ฝ๐—ฒ๐—ฟ๐˜๐—ถ๐˜€๐—ฒ and ๐—ผ๐˜ƒ๐—ฒ๐—ฟ ๐Ÿญ๐Ÿฑ+ ๐—ฝ๐—ฟ๐—ผ๐—ณ๐—ฒ๐˜€๐˜€๐—ถ๐—ผ๐—ป๐—ฎ๐—น ๐—ฐ๐—ฒ๐—ฟ๐˜๐—ถ๐—ณ๐—ถ๐—ฐ๐—ฎ๐˜๐—ถ๐—ผ๐—ป๐˜€ across the Oracle technology stackโ€”covering development, integration, implementation, extensions, consulting, and AI-driven enterprise automation for mission-critical systems. If you are a CIO, ERP lead, or technology owner running complex Oracle environments, you don't just need a developer who writes SQL or builds applications. You need a senior technology strategist who understands Oracle ERP, enterprise architecture, cloud integration, and modern AI automation. Whether you're modernizing Oracle ERP, building enterprise web applications, integrating third-party systems, or creating AI assistants that interact securely with your data, I deliver scalable, secure, and production-ready solutions. ๐Ÿ“Š ๐—˜๐—ป๐˜๐—ฒ๐—ฟ๐—ฝ๐—ฟ๐—ถ๐˜€๐—ฒ ๐——๐—ฒ๐—น๐—ถ๐˜ƒ๐—ฒ๐—ฟ๐˜† ๐—ง๐—ฟ๐—ฎ๐—ฐ๐—ธ ๐—ฅ๐—ฒ๐—ฐ๐—ผ๐—ฟ๐—ฑ โ€ข Top Rated (Top 3% on Upwork) with a 100% Job Success Score. โ€ข Performed process discovery, feasibility analysis, and solution design for automation candidates across multiple business functions. โ€ข Designed AI-driven and event-based automation workflows using n8n to connect Oracle ERP with external systems. โ€ข Integrated global CRM platforms (including NetSuite, Salesforce, and Creatio). โ€ข Architected and delivered end-to-end EBS โ†” POS integrations for NIKE, ADIDAS, LEVI'S, and PUMA retail operations in Bangladesh (Oracle EBS R12.2.x). โ€ข Built and deployed RPA solutions in UiPath Studio + Orchestrator, improving process automation by 40% โ€ข Core team member on an Oracle Fusion Cloud Supply Planning implementation. โ€ข Developed multiple customized systems across government and enterprise clients. โ€ข Delivered inbound/outbound integrations across EBS and Fusion Cloud using OIC, VBCS, FBDI, and BI Publisher. โ€ข Completed multiple end-to-end data migration projects. ๐Ÿข ๐—–๐—ผ๐—ฟ๐—ฒ ๐—”๐—ฟ๐—ฒ๐—ฎ๐˜€ ๐—ผ๐—ณ ๐—˜๐˜…๐—ฝ๐—ฒ๐—ฟ๐˜๐—ถ๐˜€๐—ฒ โ€ข Oracle Fusion Cloud PaaS Technologies: OIC, Fusion Cloud APIs, VBCS, PCS, FBDI, HDL, BI Publisher, OTBI โ€ข RPA & AI Automation: UiPath Studio, UiPath Orchestrator, Process Discovery, n8n AI automation โ€ข Application Development: Oracle APEX, Oracle ADF, OAF, Oracle Forms/Reports 6iโ€“12c, PHP, Laravel โ€ข Integration & Web Services: REST/SOAP APIs, Web Services, Microservices, ORDS, Oracle SOA Suite โ€ข Interfaces & Conversions: Standard APIs, Open Interface tables, data conversions, WebADI โ€ข Oracle E-Business Suite (EBS R12.2.x): Purchasing, iProcurement, iSupplier, Sourcing, Inventory, Landed Cost Management (LCM), Order Management, Advanced Pricing, AP, AR; P2P and O2C cycles; RICEW development (Reports, Interfaces, Conversions, Extensions, Workflows) โ€ข Oracle Integration Cloud (OIC): real-time and event-driven integrations, ORDS, inbound/outbound interfaces, middleware โ€ข PL/SQL & Database: SQL, PL/SQL, Oracle Database 10gโ€“19c, BI/XML Publisher, Oracle Workflow, WebLogic Server administration ๐Ÿ“‹ ๐—ง๐—ต๐—ฒ ๐—˜๐—ป๐˜๐—ฒ๐—ฟ๐—ฝ๐—ฟ๐—ถ๐˜€๐—ฒ ๐—˜๐—ป๐—ด๐—ฎ๐—ด๐—ฒ๐—บ๐—ฒ๐—ป๐˜ ๐— ๐—ฒ๐˜๐—ต๐—ผ๐—ฑ๐—ผ๐—น๐—ผ๐—ด๐˜† Every architecture is unique. My approach centers on deep technical assessment, clear risk identification, and structured remediation: โ–ช๏ธDiscovery & Architecture Audit: Map out dependencies, evaluate configuration drifts, and identify security or compliance gaps. โ–ช๏ธStrategic Blueprinting: Deliver a pragmatic roadmap aligning technical execution with regulatory and operational requirements. โ–ช๏ธExecution with Zero Disruption: Implement, migrate, or harden the stack using proven change-management strategies to maintain business continuity. โ–ช๏ธDocumentation & Knowledge Transfer: Provide clear, audit-ready SOPs and technical documentation so your internal teams can maintain operations cleanly. ๐Ÿš€ ๐—ช๐—ต๐—ฎ๐˜ ๐—ฌ๐—ผ๐˜‚ ๐—š๐—ฒ๐˜ ๐—ช๐—ต๐—ฒ๐—ป ๐—ช๐—ผ๐—ฟ๐—ธ๐—ถ๐—ป๐—ด ๐—ช๐—ถ๐˜๐—ต ๐— ๐—ฒ โ–ช๏ธ Enterprise-grade Oracle solutions built for scale and stability โ–ช๏ธ Clean, maintainable PL/SQL and APEX architecture โ–ช๏ธ Reliable integration layers with proper error handling and logging โ–ช๏ธ Business-driven system design (not just technical implementation) โ–ช๏ธ Long-term maintainability and support readiness โœ‰๏ธ ๐—Ÿ๐—ฒ๐˜โ€™๐˜€ ๐—•๐˜‚๐—ถ๐—น๐—ฑ ๐—ฌ๐—ผ๐˜‚๐—ฟ ๐—ฆ๐˜†๐˜€๐˜๐—ฒ๐—บ ๐—ฃ๐—ฟ๐—ผ๐—ฝ๐—ฒ๐—ฟ๐—น๐˜† If you are looking to modernize Oracle systems, integrate fragmented platforms, or build a scalable enterprise application ecosystem, I can help you design and deliver it end-to-end. Click โ€œ๐—œ๐—ป๐˜ƒ๐—ถ๐˜๐—ฒโ€ or โ€œ๐— ๐—ฒ๐˜€๐˜€๐—ฎ๐—ด๐—ฒโ€ and share: โ€ข Your current Oracle/ERP landscape โ€ข Key business processes that need automation โ€ข Integration challenges or system gaps Letโ€™s build a system that actually fits your business โ€” not just another application.

  • Oracle Database
  • Oracle PLSQL
  • Oracle APEX
  • Oracle E-Business Suite
  • Oracle Integration Cloud Service
  • API Integration
  • Oracle Database Administration
  • SQL
  • Oracle Fusion Applications
  • Data Extraction
  • Oracle NetSuite
  • HTML
  • JavaScript
  • Oracle Cloud
  • Oracle Application Framework
  • Implementation
  • NetSuite Development
  • REST API
Nabeel J.

Lahore, Pakistan

$15/hr
5.0
18 jobs

An experienced Oracle Apex expert with industry experience over a decade; proficient in SQL, PL/SQL, APEX (Oracle Web Application), Apex Forms / Reports and Analytics. A Certified Oracle APEX Professional, specializing in developing Logistic Management Systems and HR Management applications for Public sector and other Enterprise clients. Automation of projects demanding a thorough understanding of hundreds of processes. My Experties involves automating these processes, fostering collaboration, and leveraging data generated by automation to support decision-making and future forecasting. CERTIFICATIONS: โœ…Oracle Data Management Associate โœ…Oracle Autonomous Database and AI Machine Learning Associate โœ…ORACLE Enterprise Analytics Professional โœ…ORACLE APEX Cloud Developer Professional โœ…ORACLE Cloud Data Science Professional Professional services include, following: โœ…Oracle APEX Certified Professional โœ…Full Stack Development โœ…Back End Developer โœ…Oracle Database / Performance Tuning โœ…E-Business Suite โœ…Techno Functional Expert โœ…Senior OAF Developer โœ…XML Publisher / PLSQL Functions/ โœ…Database Database config Expertise with 11g 19c and seamless data integration โœ…Oracle Apex database ORDS with tomcat SSL and Jasper Apex Office Print

  • Oracle Database
  • Oracle Programming
  • Database
  • Oracle
  • Oracle PLSQL
  • Oracle APEX
  • Oracle Analytics Cloud
  • Oracle Forms
  • Oracle Reports
  • Oracle Exadata
  • Oracle Database Administration
  • Project Management Professional
  • Oracle Cloud
  • Oracle Business Intelligence
  • Oracle NetSuite
Debasis K.

Kolkata, India

$15/hr
4.6
18 jobs

Hello, Myself, Debasis from Kolkata, have 9 years of experience in Oracle APEX (ver 4.2 - 24.2) mainly, have experience in SQL, PL/SQL, Frontend part (JavaScript, jQuery, CSS, HTML). I have worked on a few 3rd party API Integrations with Oracle APEX applications and worked on AOP, BI Publisher also. I have some knowledge in Oracle Fusion Cloud API Integration in Oracle APEX. Thanks, Debasis Kundu

  • jQuery
  • API Integration
  • CSS
  • HTML5
  • JavaScript
  • RESTful API
  • User Interface Design
  • Oracle APEX
  • Oracle PLSQL
  • Oracle Integration Cloud Service
  • Web Service
  • Oracle Cloud
  • Oracle Fusion Applications
  • Oracle Database Administration
Rongping S.

Chengdu, China

$60/hr
5.0
169 jobs

Slow databases? Production outages? Performance bottlenecks affecting your business? I help organizations identify root causes, optimize database performance, and build reliable database platforms. I am a senior database administrator (DBA) with over 13 years of hands-on experience managing production database systems. I specialize in MySQL, MariaDB, PostgreSQL, SQL Server, MongoDB adn Oracle, providing database troubleshooting, incident response, daily operations and maintenance, performance optimization, and reliable backup, high availability, and disaster recovery solutions for mission-critical environments. ๐Ÿ” Database Expertise: With over 13 years as a senior expert in MySQL/MariaDB/Percona/PostgreSQL/MongoDB/Oracle/SQL Server/DuckDB, Iโ€™ve managed over 5000 databases and 300 TB+ of data. My experience covers database architecture, performance optimization, backup and recovery, High availability, disaster recovery, and much more. I ensure every database solution I deliver is robust, scalable, high performance, and perfectly aligned with your business needs. ๐Ÿ› ๏ธ Technology Stack: MySQL/Percona (Versions 5-9) MariaDB (Versions 5-12): Installationใ€High Availability, Replication, and Scalability Solutionsใ€InnoDB Clusterใ€Group Replicationใ€Workbench/Shell/Routerใ€Backup & Restoreใ€Galera Clusterใ€Percona XtraDB Clusterใ€XtraBackupใ€Toolkitใ€InnoDB/MyISAM/Binlogใ€Orchestratorใ€replication-manager. PostgreSQL (Versions 7-18): Installationใ€High Availability, Replication, and Scalability Solutionsใ€SQL Tuningใ€pgpool-IIใ€PostGISใ€TimescaleDBใ€ClickHouseใ€Patroniใ€Citusใ€pgvectorใ€Securityใ€Supabaseใ€Neon. MongoDB (Versions 3-8) / MongoDB Atlas : Installationใ€MongoDB Shell (mongosh)ใ€Aggregationใ€Indexesใ€Atlasใ€Time Seriesใ€Change Streamsใ€Replicationใ€Shardingใ€Storageใ€Administrationใ€Security. SQL Server (Versions 6.5 โ€“ 2025): Installationใ€High Availability and Disaster Recovery (Always On AG, FCI, Log Shipping, Replication)ใ€Distributed Availability Groupsใ€SQL Server Management Studio / Azure Data Studio / sqlcmdใ€Backup & Restoreใ€Failover Cluster / Always On Solutionsใ€PowerShell dbatools / First Responder Kitใ€Storage Engine / Transaction Log / Change Data Capture. Other Database : Oracleใ€DB2ใ€Redisใ€SQLiteใ€DuckDBใ€DocumentDB Cloud service providers: AWS RDSใ€AWS Auroraใ€Amazon DocumentDBใ€GCPใ€Azureใ€N8N creator. Certifications: I hold certifications from Cisco, Oracle, MySQL, AWS, ITIL, PMP, and TOGAF, ensuring I bring industry-recognized expertise to every project. ๐Ÿ“ˆ Why Choose Me? Proven Experience: Worked for leading ICT and IoT solution providers, supporting major operators, banking, and financial enterprises. End-to-End Solutions: From designing high availability architectures to delivering query optimizations and backup solutions, I offer complete database management expertise. Training & Support: I also provide course training for companies looking to empower their teams with database-related skills. ๐Ÿค Letโ€™s Collaborate: If youโ€™re looking for a seasoned database professional to tackle challenges in MySQL, PostgreSQL, MongoDB, Oracle, or other database technologies, letโ€™s discuss how I can help streamline your operations and enhance performance. ๐Ÿ“ฉ Contact Me: Iโ€™m ready to dive into your project. Reach out, and letโ€™s unlock the full potential of your data infrastructure together!

  • Oracle
  • PostgreSQL
  • MySQL
  • MariaDB
  • MongoDB
  • Microsoft SQL Server
  • SQL
  • Database Optimization
  • MySQL Programming
  • Database Administration
  • Database Design
  • Query Tuning
  • Database Maintenance
  • Amazon RDS
  • PostgreSQL Programming
Zeeshan A.

Muscat, Oman

$20/hr
4.5
40 jobs

Oracle Certified Database Engineer | 15+ Years | Multi-DB, Odoo ,Legacy Oracle Specialist and data migration. "I build the intelligence inside your data systems." 15+ years delivering scalable solutions across Oracle (certified), PostgreSQL, MySQL, SQL Server, MS Access, and more. Trusted by long-term clients for reliable, high-quality work. Expertise: โ€ข PL/SQL, tuning, optimization, migrations (Oracle + multi-DB) โ€ข ETL/ELT pipelines, Python automation โ€ข Odoo customization, modules, APIs โ€ข Biometric sync (ZKTeco/BioTime โ†’ Odoo HR/Payroll) โ€ข Oracle Forms & Reports development/maintenance; PHPRunner rapid web apps; desktop DB (MS Access, LibreOffice Base) โ€ข Legacy Oracle: Install & configure Forms 6i on Windows 11 (unsupported workaround) Results: Zero-touch payroll for 500+ users; 70%+ faster queries. Available for long-term partnerships. Message me to discuss your project!

  • Oracle Database
  • SQL
  • Database Administration
  • Microsoft Access
  • MySQL
  • Oracle PLSQL
  • Xlinesoft PHPRunner
  • Oracle Forms
  • Database Programming
  • Stored Procedure Development
  • SQL Programming
  • Data Analysis
  • Data Migration
  • Data Cleaning
  • Looker Studio
RAJ B.

Pune, India

$25/hr
4.8
55 jobs

Hello, I consider myself an expert in Oracle Database world and Open for new opportunities! I'm passionate about solution in Oracle Database design + APEX+ OCI + ORDS + OAC Expert Developer. Working with more than 13+ years' experience in Oracle technology stack. With proven experience of expert in database and OCI practice. โญ| Technical Area Expertise: -------------------------------------------- โœ”๏ธExpert Oracle SQL/PLSQL Developer โœ”๏ธExpert Oracle APEX Developer โœ”๏ธOracle Cloud Infrastructure (OCI) โœ”๏ธOracle ORDS services REST develop โœ”๏ธOracle VBCS and Form & Report โœ”๏ธOracle OAC OBIEE Publisher Reports โœ”๏ธOracle WebLogic support and Maintains โœ”๏ธAI&ML services projects โœ”Data Integration ETL tools โญ| Database- Technical Expertise: โ€ข Strong knowledge of Oracle Database versions 23ai/19c/12c/11g โ€ข Hands on Data Modelling and Database Design โ€ข Expert knowledge of Performance Optimizations Query Tuning โ€ข Expert of advance SQL quires & PL/SQL Programming โ€ข Hands on collections and records advance level exception handling โ€ข Database DBA Administration for standalone and OCI hosted database โ€ข Database connection issue with other languages TNS troubleshooting โ€ข Debugging of issue and SQL developer data import and export โ€ข Oracle WALLET manager , ACL and Network security issues โ€ข Oracle Certificate installations for API outbound call from DB โ€ข Send SMTP and HTTP send mail from database โ€ข Oracle REST Data Services (Configurations, REST APIs development) โ€ข Webservices Types REST, SOAP XML & JSON Data Processing โ€ข Data integrations and ETL tools (data extractions transform) โญ| APEX - Technical Expertise: โ€ข Oracle Apex 24.1, 23, 22.x,20.x,19.x,18.x,5.x โ€ข SQL& PL/SQL Programming expert (Advanced Level) โ€ข Expert in writing Oracle Function, Procedure, Package ,Triggers, cursors and sequences. โ€ข Oracle Forms and reports to APEX modernization โ€ข Implemented projects on Oracle cloud AI Services (Generative AI, Language, Vision, Document, speech) with APEX projects โ€ข Oracle REST Data Services (ORDS) APIs development and ORDS Configurations โ€ข Integrations with APEX- Oracle Services, Microsoft, Google, Amazon, Digital Ocean, Login.com, Tableau, PayPal. โ€ข Webservices Types REST, SOAP XML & JSON Data Processing in APEX. โ€ข Automations With APEX services like Files processing, mails notification, Reports and Custom JOBS. โญ| OCI - Technical Expertise โ€ข Setting up and managing OCI networking (VCN, subnets, gateways, VPNs, etc.) โ€ข Configuring OCI Web Application Firewall (WAF) to protect applications โ€ข Email Delivery setup with (DKIM setting) โ€ข Data-integrations, data-loading, OAC report setups โ€ข WebLogic, NGINX, and load balancer setups OCI โ€ข Supporting migration of workloads (VMs, databases) to OCI โ€ข Configure DNS and manage domain mapping to the new OCI resources. โ€ข Managing Identity and Access Management (IAM): domains, policies, dynamic groups, compartments โ€ข Setting up IAM policies, compartments, and security controls (Cloud Guard, Vault) โ€ข Working with Linux-based environments (Oracle Linux, RHEL) for system configuration, performance tuning, and troubleshooting โ€ข Monitoring, performance tuning, and cost optimization โ€ข Installation of Oracle database, APEX, OBI, ORDS, WebLogic infra. โญ| OAC/OBIEE - Technical Expertise โ€ข OAC report dashboard design โ€ข Working on BIP report development โ€ข BIP report bursting and exporting โ€ข Email delivery of monthly reports using Bursting โ€ข Crystal AOP, Jasper, PLPDF, Tableau Reports. I have been working with clients across the globe. ๐–๐ก๐ฒ ๐‚๐ฅ๐ข๐ž๐ง๐ญ๐ฌ ๐‚๐ก๐จ๐จ๐ฌ๐ž ๐Œ๐ž I guarantee to solve your technical problems 100% in timely manner! Thanks for reading my profile and I am confident that we can make your project successfully together.

  • Oracle E-Business Suite
  • Oracle WebLogic Server
  • Oracle Forms
  • Database Design
  • Oracle APEX
  • Database Programming
  • Query Tuning
  • Oracle Analytics Cloud
  • Oracle Cloud
  • Oracle PLSQL
  • Oracle Business Intelligence
  • SQL
  • Oracle Database Administration
  • Oracle Data Integrator
  • Data Lake
  • Oracle Integration Cloud Service

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At A Glance: Oracle Database Developers

In the modern technological world, the efficient management and storage of data has become an integral part of many businesses and industries. Everyday access to various technologies both online and off produce a flood of data that businesses use and analyze to predict customer and market behavior. This data has to be stored, managed, and manipulated rapidly and efficiently in order to keep up with the speed of business that has become the status quo in todayโ€™s marketplace. Oracle Database has been a viable database solution since 1977 and continues to provide powerful software tools to businesses and companies.

Oracle Database developers and programmers are highly-skilled, computer-literate professionals with an in-depth knowledge of the Oracle Database system and its many associated software tools and programs. Oracle developers can help you and your business manage and organize your data in highly efficient ways through the Oracle system, while programmers can take your data and help you create and build systems from the ground up that are optimized to your business needs. Both developers and programmers are skilled data management and analysis experts who can provide an objective view and impartial consultation in regards to the way you manage and store your data. Working with a freelance Oracle Database developer or programmer gives you and your company access to cost-effective and powerful management tools that can be implemented to improve the way any type or size of company does business in the digital world.