Hire the Best Oracle GoldenGate Freelancers in Karachi, PK

Senior Oracle APEX & .NET Developer | Full Stack Technologist | Healthcare Integration Specialist Experienced and solution-focused Senior Developer with a strong track record in designing scalable enterprise and medical software systems using Oracle APEX, .NET (C#), Python, and modern full-stack technologies. Specialized in DICOM/PACS, HL7 interoperability, and healthcare IT infrastructure, with hands-on experience in deploying medical imaging servers and real-time healthcare integration solutions. Proven expertise in building secure, maintainable systems across industries including banking, logistics, and healthtech. 🧠 Core Competencies & Technical Skills 🖥 Languages & Frameworks C#, Python, JavaScript (ES6+), HTML5, CSS3, React.js, Node.js, Electron.js, .NET Core 🗄️ Databases Oracle (PL/SQL), MS SQL Server, MySQL, PostgreSQL 💡 Oracle APEX & Plugin Development Advanced APEX solutions, dynamic PDF/DOCX/HTML reporting, custom plugin development 📊 Reporting Tools Power BI, JasperReports, AOP, MaxPrint 🏥 Healthcare Imaging & Interoperability Orthanc PACS Server – Setup, configuration, and DICOM routing DCM4CHEE Archive Server – Deployment and integration with enterprise workflows OHIF Viewer – Linked to Orthanc and DCM4CHEE for web-based diagnostic image viewing Mirth Connect – Designed HL7 ↔ JSON pipelines for EMR/EHR/HIS integrations 🛠 DevOps & Integration Git, RESTful APIs, CI/CD pipelines, Web Services 🤝 Soft Skills Problem solving, team collaboration, agile development, stakeholder communication 🏢 Latest Experience 🏥 Healthcare Imaging Systems Engineer (DICOM & Interoperability) ABMTEC Pvt. Ltd. | 2024 – Present Led the deployment and configuration of Orthanc and DCM4CHEE servers for hospitals and radiology centers. Successfully integrated OHIF Viewer with both Orthanc and DCM4CHEE, enabling zero-footprint DICOM image viewing via web browsers. Developed Mirth Connect pipelines to translate HL7 messages to JSON and vice versa, ensuring seamless data exchange between PACS, RIS, and HIS systems. Contributed to the technical documentation, testing, and support of imaging workflows in healthcare environments. Collaborated with radiologists, IT teams, and system integrators to ensure compliance with healthcare standards and operational efficiency. 🚀 Other Key Projects & Accomplishments MaxPrint Plugin & Reporting Service – Developed a plug-and-play APEX plugin for custom PDF/DOCX reporting. Automotive DataLake & DWH – Enabled ML-powered analytics using structured/unstructured data pipelines. Corporate Credit Bureau & Credit Risk Dashboards – Designed secure financial systems for risk monitoring. Dispute & PDF Management Systems – Delivered custom tools for financial institutions and document workflows. Shopify Integration Project – Automated order-to-production flow for an e-commerce backend. 🎓 Education Bachelor of Science in Computer Science – Virtual University of Pakistan Certified in Full Stack Web Development, Oracle APEX, and .NET Core

Database, Storage, Cloud & Systems Administrator I bring 11+ years of enterprise IT experience delivering secure, scalable, and high‑performance solutions. Specialized in database management, cloud infrastructure (AWS, Azure, Huawei Cloud), storage solutions, virtualization (VMware, Hyper‑V), and enterprise networking. Skilled in Windows/Linux server administration, Active Directory, Microsoft 365, and RMM tools to ensure uptime, security, and efficiency. Core Expertise: - Database & Storage: Oracle RAC, SQL Server, MySQL, SAN/NAS, backup & disaster recovery. - Cloud Solutions: Azure AD, AWS, Microsoft 365 migrations, identity & access management. - Systems & Network: Windows/Linux servers, DNS, DHCP, VPN, VLANs, firewall configuration. - Virtualization: VMware vSphere, vSAN, NSX, Horizon, Hyper‑V. - Client Support: Tier 2/3 troubleshooting, proactive monitoring, service desk management. Value to Clients: I deliver end‑to‑end IT infrastructure solutions that improve reliability, strengthen security, and support business growth.

A Certified IT professional freelancer on Upwork specialized in Microsoft SQL Server Database Administrator (DBA), IBM webMethods API Gateway, Integration Server, Universal Messaging, Developer Portal, Command Central Implementations and Administration, Oracle database administrator, Oracle Middleware Weblogic Administrator, Oracle EBS, Oracle Hospitality Micros E7, RES 3700, Oracle utilities Customer Card and billing technical and functional support (CC&B / CCB / MDM / WAM, MWM, NMS and OUA). Oracle Simphony POS implementation and support, Oracle Hyperion, Windows and Linux system administrator, IT Helpdesk and technical Support. I have worked on several different jobs with 100% 🏆reliability and long term repeated clients in the following; ✅ 24/7 | Remote | Call | Operational support. ✅ Microsoft Server Implementation and Administration Support. ✅ Microsoft SQL Database Administration. ✅ Server Administration including Windows / Linux / OEL. ✅ Oracle Products Implementation, Administration, critical, security patching and support. ✅ Backup and Disaster Recovery of Oracle Database using RMAN. ✅ Designing Oracle DR site using Dataguard. ✅ Implementation and Support of IBM webMethods, API Gateway, ESB, Integration Server, Universal Messaging, Command Central, Developer Portal, SoftwareAG Products. ✅ Oracle EBS Technical and Administration Support. ✅ Oracle Fusion Middleware Implementation and Administration Support Weblogic / OHS / SOA / OSB / BPM / Integrated JDeveloper / Forms & Report/ LDAP integration with Fusion Middleware. ✅ Tomcat Apache Middleware Administration. ✅ Performance Monitoring and auditing support. ✅ Upgrade / Migrate Database and Fusion Middleware. ✅ Support Amazon AWS Services. ✅ Schedule Performance Monitoring and administration task for your business. ✅ Training and Management. SKILLS: 🔶 Microsoft SQL Database Administration. 🔶 Oracle Database Administration 🔶 MySQL Database Administration. 🔶 Oracle Forms & Report Configurations. 🔶 Oracle FMW Weblogic Administrator. 🔶 24/7 for Mission-Critical Environment Support. 🔶 Technical & Help Desk Customer Support. 🔶 Oracle EBS Administration. 🔶 Microsoft SQL, Oracle products critical patching. 🔶 SQL DB Backups, IMPDB / EXPDB, RMAN Incremental Level 0 and Differential backup & recovery. 🔶 Oracle utilities Customer Card and billing technical and functional support (CC&B / CCB / MDM / WAM, MWM, NMS and OUA). 🔶 Oracle Micros E7 POS complete support. 🔶 Oracle Micros RES 3700 POS implementation and support. 🔶 Oracle Simphony POS implementation and support. 🔶 Oracle POS RVC, Touchscreen, MI, Deals, Combo, Reports, EOD/SOD, Reports, database Designing staff training and support. 🌟 WHY YOU CONTACT ME OVER OTHER FREELANCERS? 🌟 🏆 Upwork employer’s excellent satisfaction feedback. 🏆 I have hands-on experience more than 8+ years in relevant products. 🏆 Officially certified in products cum having Master’s Degree in Computer Science. 🏆 Maximum availability for your mission-critical environment 🏆 Providing functional team support for your products. 🏆 Pay after your satisfaction. ✉ Do you have any urgent query or requirements? Kindly open PMB and feel free to contact!

With 18 years of extensive experience in database management, I specialize in enterprise database consultancy, providing cutting-edge solutions for performance optimization, high availability, and security hardening. Since 2018, I have been actively serving clients in Pakistan, and as a registered LLC in Dubai, we deliver expert database services globally to enterprises across multiple industries. My Expertise Includes: ✅ Core Databases & High Availability Solutions: - Oracle RAC, Oracle Exadata, Oracle Data Guard, GoldenGate - SQL Server AlwaysOn, MySQL Replication, MongoDB Replica Sets - AWS RDS, Oracle Enterprise Cloud Management 13c ✅ Database Security & Business Continuity: - Security Hardening (listener security, auditing, remote access restrictions) - Backup & Disaster Recovery (RMAN, Data Pump, mysqldump, AWS DMS, SCT) - Performance Tuning (ASH, AWR Snapshots, ADDM, OEM13c) ✅ Enterprise Data Integration & Business Intelligence: - SQL Server Integration Services (SSIS), Oracle Data Integrator - Power BI, Oracle BI, SQL Server Reporting Services (SSRS) - Oracle Identity & Access Manager ✅ Cloud & Virtualization Experience: - AWS RDS, AWS DMS, AWS SCT, Oracle Virtual Box OVM - RedHat Enterprise Linux (RHEL) & Windows Server Administration ✅ Scripting & Automation: - Automating DBA tasks using Shell Scripting & OS Scheduling on RHEL & Windows I specialize in delivering scalable, secure, and high-performance database solutions that support enterprise growth. Whether it’s database migrations, disaster recovery planning, high-availability architecture, or cloud adoption, I bring a strategic approach to ensure optimal database operations.

I have over 17+ years of experience in Information Technology, having immense exposure and competencies to manage production databases on large-scale IT Infrastructure based on heterogeneous environments MSSQL Server, Sybase ASE, Oracle & MySQL and provide Adhoc support for mission-critical applications systems. I am providing consultancy for System & Solution Architect, Database Architects, Database Administration, database clustering, HA/DR, SQL AlwaysON, Log Shipping, replication, mirroring, Oracle Data Guard, Oracle RAC, database patches, database upgrades, database migration, backups & recovery policies & procedures, database optimization, performance tuning, database encryption TDE, triggers, Stored procedure Coding, SQL Query, Power BI, MSAccess database development forms & reports, VBA Coding & macros, auditing, database maintenance, database cleansing, database uploading with customize mapping, Query Optimization, Data Management, Data Cleansing, Data Transformation, Bulk Data Loading, ETL Processes optimization, Oracle Exadata, SQL Server Administration & DBCC commands, database re-indexing & rebuilding, statistics gather, user permissions, database security policy implementation, triggers, database scheduler through native service and agents and also by cronjobs,, Linux Administration, Oracle Weblogic, AIX Administration, SUN Solaris support & administration, Automation, Shell Scripting, Oracle Cloud 13c Monitoring tool, Dell-EMC Networker database integration, Database Security, row level & column level database security, database coaching & training for SQL & DBAdmin I am always part of cloud administration team based on landscapes on Azure & OCI, also managing, provisioning and migration of databases on AzureSQL. I am also dealing with IT Infrastructure projects for server and database licensing; planning & RFP, budgeting, capacity planning in-line with organization goals & strategy.

Full-Stack Oracle APEX Developer & Software Solution Provider for Small or Large scale business Business Technology Specialist Expert in Analytical Dashboards