🚀 Certified & Experienced Database Administrator (DBA) with 5+ years of hands-on experience managing Oracle, PostgreSQL, and MySQL systems across production and enterprise-grade environments. I specialize in **database performance tuning**, **high availability setups**, **backup & recovery strategies**, **replication**, and **secure cloud-based deployment** (especially AWS RDS). I ensure fast, secure, and scalable database systems to power your application or business needs. 🔧 Core DBA Services: • Oracle, PostgreSQL & MySQL Administration (Installation, Patching, Upgrades) • Query Optimization & Performance Tuning (Explain Plan, Indexing, Hints) • High Availability: Oracle Data Guard, PostgreSQL Patroni, MySQL InnoDB Cluster • Backup & Recovery Automation (RMAN, pgBackRest, mysqldump, scripts) • Cloud DB Setup & Management (AWS RDS / EC2) • Replication Setup (Streaming Replication, Logical Replication, etc.) • Disaster Recovery Planning & Monitoring (Zabbix, PMM, pgAdmin, Grafana) 🧰 Tools & Technologies: Oracle 19c | PostgreSQL | MySQL 8 | Data Guard | Patroni | Linux | Bash Scripting | Python | AWS | pgAdmin | PMM | pgBackRest | Zabbix | Docker 🌐 Additional Skills (On Demand): • WordPress Theme Customization & Migration • Basic software automation (Python / PHP / SQL scripts) 🎯 Why Work With Me? I bring production-level expertise, sharp problem-solving skills, and clear communication. Whether you need a one-time DB audit or long-term DBA support, I’ll deliver secure, stable, and high-performance database solutions — tailored to your goals. Let’s connect and build a strong database foundation for your business!

Database Engineer with 10+ years of experience specializing in PostgreSQL and SQL Server — migrations, performance tuning, and production DBA work. I work with companies that need their database environments handled properly: cleanly migrated, well-optimized, and reliably maintained. My background includes managing production PostgreSQL and MSSQL systems in high-availability configurations for a global software company. What I can help you with ━━━━━━━━━━━━━━━━━━━━━━━ ✔ MSSQL → PostgreSQL migrations (schema, data, stored procedures) ✔ PostgreSQL & SQL Server performance tuning and query optimization ✔ Database administration — backup, recovery, monitoring, HA setup ✔ ETL pipelines and data migration automation (Python / SQL) ✔ Backend API development with database-heavy logic (FastAPI / Node.js) ✔ Schema design, indexing strategy, and capacity planning Production experience ━━━━━━━━━━━━━━━━━━━━ Currently managing live PostgreSQL and MSSQL environments including: - High-availability configurations and failover management - Backup and recovery strategies for large-scale databases - Performance diagnostics and infrastructure monitoring - Large-scale data migrations across cloud and on-premise systems How I work ━━━━━━━━━━ I take database work seriously — clean documentation, tested scripts, and no shortcuts on production systems. I use modern tooling where it accelerates delivery without compromising quality. If you need a reliable database engineer for a migration, optimization project, or ongoing DBA support, feel free to reach out.

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: • PL/SQL, tuning, optimization, migrations (Oracle + multi-DB) • ETL/ELT pipelines, Python automation • Odoo customization, modules, APIs • Biometric sync (ZKTeco/BioTime → Odoo HR/Payroll) • Oracle Forms & Reports development/maintenance; PHPRunner rapid web apps; desktop DB (MS Access, LibreOffice Base) • 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!

𝟏𝟎+ 𝐘𝐞𝐚𝐫𝐬 | 𝟑𝟐 𝐉𝐨𝐛𝐬 𝐂𝐨𝐦𝐩𝐥𝐞𝐭𝐞𝐝 | 𝟔,𝟑𝟎𝟎+ 𝐇𝐨𝐮𝐫𝐬 | 𝟏𝟎𝟎% 𝐉𝐨𝐛 𝐒𝐮𝐜𝐜𝐞𝐬𝐬 | 𝐓𝐫𝐮𝐬𝐭𝐞𝐝 𝐛𝐲 𝐅𝐨𝐫𝐭𝐮𝐧𝐞 𝟓𝟎𝟎 & 𝐇𝐢𝐠𝐡-𝐆𝐫𝐨𝐰𝐭𝐡 𝐒𝐭𝐚𝐫𝐭𝐮𝐩𝐬 |🏆 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐏𝐥𝐮𝐬 I am a full spectrum Data or Database professional combining deep database engineering with business intelligence, visual analytics, and process automation. Over the past decade, I have delivered measurable and high impact solutions across Fortune 500 companies, high growth start-ups and multi industry enterprise clients. Whether you need a lightning fast database, an executive ready BI dashboard or a fully automated ETL pipeline. I bring the architecture, the precision and the business context to get it right the first time. 𝐖𝐡𝐚𝐭 𝐈 𝐃𝐨 𝐁𝐞𝐬𝐭 🔹 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞 𝐃𝐞𝐬𝐢𝐠𝐧 & 𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞 MySQL, Oracle, PostgreSQL, Supabase, Metabase, MongoDB, MSSQL, Neo4J from schema design to full normalization. I build databases that scale from Day 1 and hold up under real world loads. 🔹 𝐐𝐮𝐞𝐫𝐲 𝐎𝐩𝐭𝐢𝐦𝐢𝐳𝐚𝐭𝐢𝐨𝐧 & 𝐏𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 𝐓𝐮𝐧𝐢𝐧𝐠 Slow queries destroy user experience. I have reduced query execution times by up to 70% using indexing strategies, query restructuring and execution plan analysis. 🔹 𝐁𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐈𝐧𝐭𝐞𝐥𝐥𝐢𝐠𝐞𝐧𝐜𝐞 & 𝐃𝐚𝐬𝐡𝐛𝐨𝐚𝐫𝐝𝐬 Power BI, Tableau, Looker, QuickSight. I don't just build charts. I create decision support systems. DAX, Power Query M, custom visuals, RLS and live gateway connections are all in my toolkit. 🔹 𝐃𝐚𝐭𝐚 𝐌𝐢𝐠𝐫𝐚𝐭𝐢𝐨𝐧 & 𝐄𝐓𝐋 Migrated 200M+ records across systems with zero downtime. I handle complex data transfers with full validation, rollback planning and audit trails. 🔹 𝐑𝐞𝐩𝐨𝐫𝐭𝐢𝐧𝐠 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 From Power Automate flows to Python (Pandas) scripts and Alteryx pipelines. I eliminate manual reporting cycles and give your team hours back every week. 𝐏𝐫𝐨𝐯𝐞𝐧 𝐑𝐞𝐬𝐮𝐥𝐭𝐬 𝐢𝐧 𝐍𝐮𝐦𝐛𝐞𝐫𝐬 ✅ 32 projects completed on Upwork with 100% Job Success Score ✅ 6,300+ hours of logged, verified client work ✅ 70% reduction in query execution time | Healthcare client ✅ 200M+ records migrated with zero downtime | E-commerce platform ✅ 5x faster data retrieval | American Sports Database (NBA/NFL/NCAA) ✅ 50% reduction in manual reporting effort | Healthcare organization ✅ 40% faster decision making | Retail client (data visualization) ✅ 25% increase in operational efficiency | Sano Living (custom BI dashboard) ✅ 20% boost in conversion rates | E-commerce real time analytics ✅ 90% improvement in fraud detection accuracy | FinTech database ✅ 60% reduction in inventory errors | Logistics automation system ✅ Top Rated Plus badge | Earned for consistently delivering on large contracts 🏭 𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 𝐈 𝐒𝐞𝐫𝐯𝐞 Healthcare & Med-Tech | Finance & FinTech | E-commerce & Retail American Sports (NBA, NFL, NCAA) | Manufacturing & ERP Logistics & Supply Chain | Telecommunications Pharmaceutical & Research | Education & E-learning Marketing & Advertising | Hospitality & Travel 𝐓𝐨𝐨𝐥𝐬 & 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐢𝐞𝐬 Databases: MySQL · Oracle · PostgreSQL · MongoDB · MySQL · PL/SQL · SQL Server BI & Visualization: Power BI · Tableau · Looker · QuickSight · Looker Studio Languages: SQL · DAX · Power Query M · Python (Pandas) · Java · R ETL & Automation: Power Automate · Alteryx · Airbyte · Airflow · Airtable · shell scripting · AWS · Microsoft Azure · Azure Table · dbt Cloud & DWH: BigQuery · Snowflake · Databricks ·data modeling : Data Warehousing · Star Schema · Data Vault · ERD Design Sports Data: FantasyData · SportsMonks API Integration · Supabase · Metabase · PostgreSQL · Timescale · Postgis 𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐂𝐡𝐨𝐨𝐬𝐞 𝐌𝐞 I don't just complete tasks. I solve the root problem. Every engagement starts with understanding your business objective, not just the technical brief. My clients get clean architecture, clear documentation, and solutions that their internal teams can actually maintain and grow. I communicate proactively, hit deadlines, and never disappear mid project. That's how I've maintained a perfect Job Success Score across 32 contracts and 6,300+ hours. If your data is slowing you down, costing you accuracy, or failing to drive decisions. Let's fix that. 𝐌𝐞𝐬𝐬𝐚𝐠𝐞 𝐦𝐞 𝐭𝐨𝐝𝐚𝐲 𝐚𝐧𝐝 𝐥𝐞𝐭'𝐬 𝐭𝐚𝐥𝐤 𝐚𝐛𝐨𝐮𝐭 𝐲𝐨𝐮𝐫 𝐩𝐫𝐨𝐣𝐞𝐜𝐭. Best Regards, M. Ehtasham

Stop overpaying for cloud resources and struggling with slow queries. I help companies achieve 𝟗𝟗.𝟗𝟗% 𝐮𝐩𝐭𝐢𝐦𝐞 and 𝐞𝐧𝐭𝐞𝐫𝐩𝐫𝐢𝐬𝐞-𝐠𝐫𝐚𝐝𝐞 𝐬𝐞𝐜𝐮𝐫𝐢𝐭𝐲 for their most mission-critical data. 🏆Top Rated Plus Freelancer 🏆Elite SQL Optimization & Scalable Data Architecture Specialist 🥇Worked 9000+ hours with a 100% Job Success Score ✅Expert Microsoft SQL Server | MySQL | Cloud Database Architect | Query Optimization | Azure | GCP | AWS | ETL & Data Warehousing | Big Data | High Availability | DevOps for Databases 𝐈𝐧𝐭𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧:- I'm Usman, a 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐏𝐥𝐮𝐬 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞 𝐀𝐝𝐦𝐢𝐧𝐢𝐬𝐭𝐫𝐚𝐭𝐨𝐫 𝐚𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 with over 𝟏𝟓 𝐲𝐞𝐚𝐫𝐬 𝐨𝐟 𝐡𝐚𝐧𝐝𝐬-𝐨𝐧 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 in SQL Server, MySQL, and PostgreSQL. I specialize in architecting scalable, cloud-native data ecosystems that power high-growth SaaS, ERP systems, and global eCommerce platforms. I bring a rare blend of deep technical knowledge, enterprise-level implementation experience, and long-term client trust, having worked 9000+ Upwork hours with a 100% Job Success Score. 𝑴𝒚 𝒅𝒂𝒕𝒂𝒃𝒂𝒔𝒆 𝒆𝒙𝒑𝒆𝒓𝒕𝒊𝒔𝒆 𝒔𝒑𝒂𝒏𝒔 𝒂𝒄𝒓𝒐𝒔𝒔: ⚡ Enterprise-grade 𝐒𝐐𝐋 𝐒𝐞𝐫𝐯𝐞𝐫 𝐚𝐧𝐝 𝐌𝐲𝐒𝐐𝐋 𝐚𝐝𝐦𝐢𝐧𝐢𝐬𝐭𝐫𝐚𝐭𝐢𝐨𝐧. 📊 Advanced 𝐪𝐮𝐞𝐫𝐲 𝐩𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 𝐭𝐮𝐧𝐢𝐧𝐠, 𝐢𝐧𝐝𝐞𝐱𝐢𝐧𝐠, 𝐚𝐧𝐝 𝐬𝐭𝐨𝐫𝐞𝐝 𝐩𝐫𝐨𝐜𝐞𝐝𝐮𝐫𝐞 𝐨𝐩𝐭𝐢𝐦𝐢𝐳𝐚𝐭𝐢𝐨𝐧. ☁️ Cloud database deployments, migrations, and administration on 𝐀𝐳𝐮𝐫𝐞, 𝐆𝐨𝐨𝐠𝐥𝐞 𝐂𝐥𝐨𝐮𝐝 (𝐆𝐂𝐏), 𝐚𝐧𝐝 𝐀𝐖𝐒 𝐑𝐃𝐒. 🔄 𝐄𝐓𝐋 development using SSIS, Power BI, and modern data warehousing strategies. 🔐 Data integrity, backup/restore, disaster recovery planning, and replication. Zero-Trust data access, Row-Level Security (RLS), and 𝐞𝐧𝐬𝐮𝐫𝐢𝐧𝐠 𝐇𝐈𝐏𝐀𝐀/𝐆𝐃𝐏𝐑 𝐜𝐨𝐦𝐩𝐥𝐢𝐚𝐧𝐜𝐞. 📈 Implementing 𝐂𝐈/𝐂𝐃 𝐩𝐢𝐩𝐞𝐥𝐢𝐧𝐞𝐬 𝐚𝐧𝐝 𝐃𝐞𝐯𝐎𝐩𝐬 𝐩𝐫𝐚𝐜𝐭𝐢𝐜𝐞𝐬 for scalable, automated database releases. 🔍 Monitoring & alerts using tools like 𝐀𝐳𝐮𝐫𝐞 𝐌𝐨𝐧𝐢𝐭𝐨𝐫, 𝐍𝐞𝐰 𝐑𝐞𝐥𝐢𝐜, 𝐚𝐧𝐝 𝐒𝐐𝐋 𝐏𝐫𝐨𝐟𝐢𝐥𝐞𝐫. 🛠️ Real-time support for 𝐡𝐢𝐠𝐡-𝐚𝐯𝐚𝐢𝐥𝐚𝐛𝐢𝐥𝐢𝐭𝐲 architecture, 𝐦𝐢𝐫𝐫𝐨𝐫𝐢𝐧𝐠, 𝐚𝐧𝐝 𝐥𝐨𝐚𝐝 𝐛𝐚𝐥𝐚𝐧𝐜𝐢𝐧𝐠. I’ve designed and optimized databases that power high-traffic SaaS products, ERP systems, and eCommerce platforms — handling billions of records and complex business logic while maintaining peak performance. My approach is simple: 𝐮𝐧𝐝𝐞𝐫𝐬𝐭𝐚𝐧𝐝 𝐭𝐡𝐞 𝐛𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐮𝐬𝐞 𝐜𝐚𝐬𝐞 𝐟𝐢𝐫𝐬𝐭, then align data systems that are scalable, secure, and easy to maintain. Whether you need to: ✅ Fix slow queries ✅ Scale your infrastructure to handle growth ✅ Migrate from legacy systems ✅ Modernize your stack with cloud-native tools ✅ Automate your reporting & data pipelines 𝐓𝐞𝐬𝐭𝐢𝐦𝐨𝐧𝐢𝐚𝐥𝐬:- ✨"Experienced professional developer, very skilled. I can recommend him and I will use him again." ✨ "Usman is very knowledgeable and very skilled with SQL and Windows Server. I can recommend him and I will use him again." ✨ "Usman is an experienced SQL Developer. He helped with merging, changing, and fine-tuning queries. Good quality work." ✨ "Usman delivered good work. He had solutions to the project issues, and his skills were reasonably strong. I enjoyed working with Usman and will likely have additional work for him." ✨ "The stored procedure was delivered as expected. Thank you so much, Usman, for a job well done (and quick)!" ✨ "Usman delivered an amazing script to help us back up and restore our database. This automation will be a huge time-saving improvement to our manual process. Thank you, Usman, for a job well done." 𝐂𝐞𝐫𝐭𝐢𝐟𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬: * 𝑪𝒆𝒓𝒕𝒊𝒇𝒊𝒆𝒅 𝑴𝒊𝒄𝒓𝒐𝒔𝒐𝒇𝒕 𝑻𝒆𝒄𝒉𝒏𝒐𝒍𝒐𝒈𝒚 𝑨𝒔𝒔𝒐𝒄𝒊𝒂𝒕𝒆 (𝑴𝑻𝑨) 𝒊𝒏 𝑫𝒂𝒕𝒂𝒃𝒂𝒔𝒆 𝑨𝒅𝒎𝒊𝒏𝒊𝒔𝒕𝒓𝒂𝒕𝒊𝒐𝒏 𝑭𝒖𝒏𝒅𝒂𝒎𝒆𝒏𝒕𝒂𝒍𝒔 * 𝑪𝒆𝒓𝒕𝒊𝒇𝒊𝒆𝒅 𝑴𝒊𝒄𝒓𝒐𝒔𝒐𝒇𝒕 𝑻𝒆𝒄𝒉𝒏𝒐𝒍𝒐𝒈𝒚 𝑨𝒔𝒔𝒐𝒄𝒊𝒂𝒕𝒆 (𝑴𝑻𝑨) 𝒊𝒏 𝑵𝒆𝒕𝒘𝒐𝒓𝒌𝒊𝒏𝒈 𝑭𝒖𝒏𝒅𝒂𝒎𝒆𝒏𝒕𝒂𝒍𝒔 I can deliver fast, clean, and reliable results on time and within scope. 📨 𝐋𝐞𝐭’𝐬 𝐭𝐚𝐥𝐤 about how I can add value to your team or project. I'm available for consulting, long-term support, or complex one-off problem-solving.

Experienced Full Stack Developer and Database Administrator specializing in Microsoft technologies and comprehensive database solutions (MySQL, PostgreSQL, MS SQL Server). I deliver end-to-end solutions combining robust backend architecture with responsive frontend development and optimized database performance 𝐊𝐞𝐲 𝐒𝐤𝐢𝐥𝐥𝐬 & 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 Full-stack development with .NET Core, ASP.NET, VB.NET, C#, JavaScript, Angular, React & GIT 𝐀𝐝𝐯𝐚𝐧𝐜𝐞𝐝 𝐝𝐚𝐭𝐚𝐛𝐚𝐬𝐞 𝐚𝐝𝐦𝐢𝐧𝐢𝐬𝐭𝐫𝐚𝐭𝐢𝐨𝐧: MySQL (8.0/5.7/5.6) optimization and maintenance PostgreSQL setup, replication, and performance tuning MS SQL Server management, including high availability and DR Database migration and performance optimization (achieving up to 10x improvement) REST API development and system integration Azure cloud deployment and infrastructure management 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐒𝐭𝐚𝐜𝐤 Backend: .NET Core, ASP.NET, C#, Web API Frontend: Angular, JavaScript 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬: MySQL: Replication, backup/recovery, query optimization PostgreSQL: Partitioning, indexing, PL/pgSQL MS SQL Server: SSIS, SSRS, performance tuning I specialize in delivering scalable solutions, from complete system development to complex database architecture and performance tuning. Whether you need a new application built from scratch, a database migration, or system optimization, I offer the technical expertise to ensure your project's success. 𝐊𝐞𝐲𝐰𝐨𝐫𝐝𝐬: .NET Core| ASP.NET| C#| Full Stack Development| Angular| React| TypeScript| MySQL, PostgreSQL|SQL Server| Database Migration| Query Optimization| SQL Server Administration| Cloud Infrastructure| Microsoft Azure | REST API | Software Architecture| Clean Architecture, Entity Framework| System Optimization| High Availability| SSIS| SSRS| and CI/CD automation. 𝐀𝐯𝐚𝐢𝐥𝐚𝐛𝐥𝐞 𝐟𝐨𝐫 𝐛𝐨𝐭𝐡 𝐬𝐡𝐨𝐫𝐭-𝐭𝐞𝐫𝐦 𝐩𝐫𝐨𝐣𝐞𝐜𝐭𝐬 𝐚𝐧𝐝 𝐥𝐨𝐧𝐠-𝐭𝐞𝐫𝐦 𝐜𝐨𝐥𝐥𝐚𝐛𝐨𝐫𝐚𝐭𝐢𝐨𝐧. 𝐋𝐞𝐭'𝐬 𝐝𝐢𝐬𝐜𝐮𝐬𝐬 𝐡𝐨𝐰 𝐈 𝐜𝐚𝐧 𝐡𝐞𝐥𝐩 𝐚𝐜𝐡𝐢𝐞𝐯𝐞 𝐲𝐨𝐮𝐫 𝐨𝐛𝐣𝐞𝐜𝐭𝐢𝐯𝐞𝐬.

🏆 Top-Rated Database Architect & Multi-Cloud Specialist with 16+ Years of Experience Delivered 50+ enterprise-scale database and cloud transformation projects across telecom, government, banking, retail, and transport industries, specializing in migrations, HA/DR architectures, and performance tuning for Oracle, PostgreSQL, MySQL, SQL Server, MongoDB, Redis and Apache Cassandra. I am a seasoned Database Architect and Cloud Specialist with over 16 years of experience, delivering high-impact solutions across telecom, government, banking, transport, and retail industries. My expertise spans multi-database ecosystems (Oracle, PostgreSQL, MySQL, SQL Server, MongoDB, Redis) with a strong focus on performance tuning, HA/DR architectures, and enterprise-scale migrations. Beyond databases, I bring deep experience in multi-cloud environments (OCI, AWS, Azure, GCP) and DevOps practices, leveraging Kubernetes, Docker, Ansible, Jenkins, and CI/CD pipelines to design and automate resilient, scalable infrastructures. Over the years, I have led critical modernization projects including Oracle RAC/Data Guard, PostgreSQL Patroni clusters, MySQL InnoDB clusters, SQL Server Always-On, and GoldenGate microservices replication, all aligned with compliance, cost optimization, and business continuity. I specialize in cloud-native architectures, database modernization, and containerized deployments, ensuring secure, high-performing, and future-ready platforms for enterprises across multiple sectors. 🔹 Database Expertise High Availability & DR: Oracle RAC/Data Guard/GoldenGate, PostgreSQL Patroni/repmgr/EFM, MySQL Group Replication/ClusterSet, SQL Server Always-On, MongoDB ReplicaSets & Sharding, Redis Sentinel & Cluster. Performance Tuning: Advanced SQL optimization, query indexing, connection pooling, and OS-level tuning (CPU, memory, I/O, networking). Clickhouse DB optimization and performance tuning. Migrations: End-to-end cross-platform migrations (SQL Server → Postgres/Oracle, MySQL → Snowflake/OCI/Azure, on-prem → multi-cloud). I have hands-on experience designing and implementing Oracle Fusion API integrations using Oracle Integration Cloud (OIC), connecting Fusion Cloud with multiple external systems. My work includes building and optimizing REST and SOAP-based services, handling complex data mappings, and improving integration performance and reliability. I’ve also maintained existing integrations to ensure high availability and seamless data flow while collaborating closely with cross-functional teams to identify needs, streamline workflows, and deliver well-documented, reusable integration solutions. Automation: Backup/recovery orchestration, PITR, monitoring, and administration via shell scripts, Ansible, Jenkins, and IaC. 🔹 Cloud Architecture Certified in OCI, AWS, Azure, GCP, and Alibaba Cloud, with deep experience in hybrid & multi-cloud setups. Skilled in OCI Exadata Cloud@Customer, AWS RDS/Aurora, Azure SQL Database, Databricks, and multi-region failover. Migrated enterprise systems (DB + middleware) to cloud with zero-downtime cutovers and automated DR. 🔹 DevOps & Modern Platforms Proficient with Docker, Kubernetes, and OpenShift for containerized DB + application deployments. Extensive experience in building, optimizing, and maintaining Oracle Integration Cloud (OIC) processes, adapters, and orchestration for enterprise-scale clients. VBCS (Visual Builder Cloud Service): Skilled in designing and developing responsive, low-code applications integrated with Oracle SaaS and PaaS ecosystems. Strong background in CI/CD (Jenkins, GitLab, Ansible, Terraform). Experience securing secrets with Vault, integrating monitoring stacks (Prometheus, Grafana, ELK). 🔹 Odoo & Application Layer Odoo deployment, backend DB optimization, and module customization. Report building & tailoring business workflows for performance and usability. Tomcat, Apache, IBM WebSphere, Oracle WebLogic, and Bitnami stack administration. 🔹 Data & AI Solutions Data Engineering & Warehousing: Azure Data Factory, Databricks, Oracle OBIEE, Snowflake. AI Agent Development: Built agents for self-healing DBs, N8N automation, and natural language querying. Supabase Consultation: Connect Supabase with AI agents to simplify backend management for non-developers. Automate project provisioning, query execution, function creation, and API management. Enable natural language interaction with data, making database operations accessible to entire teams. ✅ Key Certifications: Oracle 19c OCP DBA | PostgreSQL Advanced v11 | MySQL 8.0 OCP | MongoDB Associate DBA | Redis Certified Developer | Microsoft Azure Administrator | OCI 2025 Certified Multicloud Architect | OCI GenAI | Oracle GoldenGate Implementation Specialist | WebLogic 12c OCP | YugabyteDB DBA

I am a database / software engineer with 25 years of experience in SQL databases. I have extensive experience in designing and developing large databases from ground up, and I also have experience in remodeling and optimizing existing databases. I gained my experience working with nationwide databases. The system I am most proud of is the processing of healthcare records, which I designed and developed in 1998. It is still running on the same principals, consisting of 12.000+ million records, growing ~42 million monthly. In the last 25 years it was migrated from Oracle 7.3 to 8i, 10g, 11g and 12c, which provided a significant experience in migration. I gained additional experience in remodeling and optimizing while working again on healthcare data in 2014. On this project the record count is much smaller, ~400.000 monthly, but the algorithm is based on a 1200+ pages legislation. During the project I was able to reduce response time from minutes to seconds, often reaching a 60-fold reduction (e.g. 40 minutes down to 40 seconds). I also have 20+ years of experience with MySQL databases in a mission-critical production environment. I designed, developed and operated a PHP/MySQL based system in 5 different locations on Linux servers for 15 years. Lately I am working on Machine Learning projects using Python, Pandas, Numpy, Scikit-learn, OpenAI, Mistral.AI. etc. Looking forward to work together, from tutoring to full system development.

I help B2B companies replace spreadsheets, manual workflows, and disconnected tools with full-stack development, custom software development, system integrations, and workflow automation. Most of my work is focused on B2B SaaS development, custom SaaS solutions, logistics systems, operations platforms, and AI-powered automation that solves real business problems. With 15+ years in full-stack web development and 250+ delivered projects, I work as a founder and technical lead. I partner with clients in logistics, B2B services, and eCommerce to build custom CRM platforms, internal business systems, management systems, and operational software that reduce manual work, improve visibility, and give teams a more reliable way to run day-to-day operations. I'M A GOOD FIT IF • Your team still relies on Excel, Google Sheets, shared documents, or email threads to manage important workflows; • Your current SaaS platform, CRM, ERP, WMS, or internal business system has become hard to change and needs stronger technical direction; • You need a reliable full-stack development partner for API integrations between your internal systems and marketplaces, shipping carriers, payment gateways, or AI services. WHAT I BUILD • Full-stack development for custom B2B SaaS platforms, CRM solutions, and internal operations tools; • Logistics systems and fulfillment software, including TMS, route planning, dispatcher dashboards, cargo planning, warehouse management views, and inventory workflows; • System integrations, business process automation, and AI-powered automation that keep data in sync and reduce repetitive manual work. Recent examples include a TMS for 3PL and eCommerce fulfillment, a multi-source marketing analytics platform, and an AI-assisted translation workflow system. HOW I USUALLY WORK • Review your workflows, constraints, and required integrations, then define a clear scope and milestone plan; • Deliver iteratively with demos, staging, and QA before release; • Support stabilization, handover, documentation, and further improvement after launch. My full-stack development work usually covers backend architecture, frontend implementation, databases, API integrations, deployment, and long-term system support. CORE STACK: Laravel/PHP, Node.js, Vue, React, TypeScript, MySQL/PostgreSQL, AWS, Docker, REST/GraphQL, and integrations with marketplace, payment, shipping, and AI APIs. If you already have a project in mind, send me 3 - 5 sentences about your current workflow and what you want to improve. I'll reply with initial fit, a possible direction, and a rough budget/timeline range.

22+ years of experience working with relational databases, especially PostgreSQL, Oracle, and MySQL. More than seven years of experience in data warehousing. Experience in designing and deploying Big Data technologies such as Kafka and Storm. Experience includes Database Design Data Modelling (Transactional & Dimensional schemas) Design and Implementation of Extraction, Transformation, Load (ETL) process Database Performance Optimization Database Administration OLAP Reporting Query optimization Author of the book "PostgreSQL for Data Architects." Experience with TimescaleDB Data migration projects for clients like GE Experience with GCP, AWS, and Azure Infrastructure as code - Terraform AWS RDS