Ehtasham

Database developer

Upwork • Freiberufler

Mar 2021 - Present • 5 yrs 2 mos

Worked as a Database Developer on large scale projects, contributing to both development and ongoing maintenance, generating over $50K in value. Experienced in MySQL, Oracle and PL/SQL, with a strong focus on query optimization, indexing and performance tuning. Built and managed ETL pipelines, handled data integration from multiple sources and ensured data accuracy and reliability. Skilled in database design, migrations, backup strategies and writing efficient SQL for scalable, high performance systems.

5★ Rated Power BI & Data Analytics Expert

Convier Solutions • Vollzeit

Apr 2014 - Present • 12 yrs 1 mo

I specialize in Business Intelligence, Data Analytics and Reporting, helping businesses turn data into clear, actionable insights. With strong expertise in Power BI, Tableau, SQL and data storytelling, I design intuitive dashboards and optimize reporting workflows to improve efficiency and decision making. Expertise: • BI & Reporting : Power BI, Tableau, Excel, SQL • Data Visualization : Interactive dashboards & storytelling • Data Analysis : Converting complex data into insights • Automation & ETL : Streamlining reporting and integration • KPI Tracking : Aligning metrics with business goals Key Achievements: • 10+ years delivering BI solutions across industries • Improved operational efficiency by 25% through custom dashboards • Boosted decision making speed by 40% for retail analytics • Reduced manual reporting effort by 50% via automation • Increased e-commerce conversions by 20% using real time analytics Industries: Healthcare, Finance, E-commerce, Manufacturing, Marketing, Logistics Tools: Power BI, Tableau, Looker, Excel, SQL, DAX, Power Query, Python (Pandas), Power Automate Why Work With Me? • Proven expertise across startups & enterprises • Focus on actionable, data driven strategies • Scalable, automated and efficient solutions • Clear, engaging insights for better decisions

Database developer | MySQL, Oracle, PL/SQL Expert

Convier Solutions • Vollzeit

Aug 2013 - Present • 12 yrs 9 mos

I maintain a proven record of consistent 5 star client satisfaction by delivering reliable, scalable and optimized database solutions. Struggling with slow queries or complex data structures? I help businesses design, optimize and secure databases for peak performance and seamless operations. Why Work With Me? • Database Expertise : MySQL, Oracle, PL/SQL, PostgreSQL, MongoDB • Performance Tuning : Query optimization, indexing, faster execution • Data Migration & ETL : Smooth, zero downtime transitions • Security & Backup : Data protection and recovery strategies • Custom SQL Development : Scripting, debugging and tuning Industry Experience: Healthcare, Finance, E-commerce, Logistics, Telecom, Education, Manufacturing, Hospitality and American sports databases (NBA, NFL, NCAA). Impact Delivered: • Reduced query time by 70% for healthcare systems • Migrated 1M+ records with zero downtime • Improved sports data retrieval speed by 5x • Built fraud detection systems increasing security by 90% • Automated inventory tracking, reducing errors by 60% I focus on building efficient, secure and scalable database systems that support real business growth.