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Denis Yatsenko

Denis Yatsenko

Oracle Advanced PL/SQL Developer Certified, OEBS,SQL, APEX,

Poland - Tests: 5 - Portfolio: 1

Oracle PL/SQL Oracle E-Business Suite R11, R12 development & implementation Oracle application framework (OAF) Java, JDeveloper Oracle Reports, Oracle Forms (creating and customization) Oracle workflow builder BI Publisher sh scripts BI Business Objects StimulSoft Data conversion Oracle application express (APEX) VBA sqlloader, SQL TOAD, SVN, redmine, jira

$33.33 /hr
69 hours

David R.

Senior Oracle Developer/DBA

United States - Tests: 11

My career objectives are to continue enhancing and expanding a twenty-six year career in computer and information technology management by providing competent, timely, and professional information technology (IT) services using current and emerging technologies. Specific areas of interest and expertise include database administration and application development, data warehousing, client-server and web-based application software development.

$44.44 /hr
3,684 hours

Denis Ilijevic


Croatia - Tests: 7

I'm interested in new technologies, computer networks, computer security, operating systems and project management. For the last year I have been working with Microsoft and Oracle databases. Beside their procedural languages I learned how to use XQuery and XPath for querying XML documents in both databases. I have experience with BIND DNS and ISC DHCP and network administration, computer security and with Unix/Linux/Window operating systems.. Before accepting any job I will do a detail interview because that's the best way to find out if I can do a job. I guarantee for my work, before any payment I like to show what I did and answer any question you ask me. If my client isn't satisfied with with my work than I won't ask for any money but I will ask where I did wrong. My moto: satisfied client = happy client

$5.00 /hr
152 hours

Joaquín González Carrasco

Joaquín González Carrasco

Oracle performance tuning DBA/developer

Spain - Tests: 4

I am an experienced Oracle DBA/developer. I've been working in jobs related with Oracle Database since 2002. I've been focused around managing Oracle DB, troubleshooting Oracle performance, tuning Oracle instance, relational database design and development and tuning of SQL and PL/SQL to improve performance. Also SQLServer, MySQL and MongoDB Knowledge. You can check my linkedin full profile at: You can check my pl/sql & database design knowledge at: Currently ranked 42th among 10.000 players all over the world, playing daily quizzes about PL/SQL since 2010. Currently ranked 4th among 500 players over the world, playing weekly quizzes about Database Design since 2013. I'm currently available only for part time jobs.

$20.00 /hr
27 hours

Valerij Golubkov

Valerij Golubkov

Database and application development, customers support

Russia - Tests: 24 - Portfolio: 6

Key Contributions (in years): Java (Android development exactly)- 2+ Java applications development and support and - 3+ MS Excel and VBA using (Oracle DB reports ) - 3+; MS SQL database development and support - 5+ С/C++/OCI - 10+; Oracle Tools, SQL, Oracle Forms, Oracle Database - 15+; My detailed profile can be reviewed on the LinkedIn Up to me Java Android and C/C++ application development as well as MSSQL and Oracle DB Architecting and Admimistration. Performed duties on position Software Developer as well as on CRM, CSM, and TAM positions also. Handling with related issues: fast optimization, trouble shooting, bug fixing and customer collaboration and support. Languages: Russian, Ukraine - native; English - good

$10.00 /hr
1,462 hours

M Rizal Firmansyah

M Rizal Firmansyah

ColdFusion, VBA, SQL - Upwork Top Developer

Indonesia - Tests: 5 - Portfolio: 6

New on UpWork. Special Introductory Price. 100% satisfaction or I don't deserve your money. +15 years experience. Solution oriented software engineer, designer and consultant. I'm an expert in architecting, developing, deploying and maintaining system solution at any scale. I've worked on simple websites to telecommunication backend with 12TB of data. One of my unique skill is that i'm very good in designing nice and friendly user interface. Another unique skill I have is that I'm equally proficient in Windows programming, UNIX, web app, Android and database. Being both an engineer and designer, I help clients bring their ideas into reality. Contact me today and I would love to hear about your business.

$28.00 /hr
758 hours

Deval P.

Deval P.

Oracle Expert

United States - Tests: 13 - Portfolio: 8

Over 11 years I have been working with Oracle Technology in a variety of industries. Oracle Certified Database Administrator (OCP). + Passionate about Oracle, especially Oracle Database, Oracle SQL & PL/SQL. + Specialise in database design/architecture for new systems and re-engineering of existing systems. + Proficient in Data warehouse. + Expert in ETL, Excel, MS Access, VBA, SQL*Plus Reporting, MySQL + Proficient in Linux Shell Scripting, Perl, Python. + Corporate trainer + In-house trainer since last 7 years. + Over 21,000 hours of in house development experience. + Authoring user training material + 20 PLSQL projects + 7 MS Visual Basic projects + 5 MS Access projects + 3 MS Excel projects + 3 Migration projects + 11 free lancing projects with rating ~5 from different websites + Over 9 years of working with US based Fortune 500 clients Work experience in following domains : + Banking + Finance + Life Science + Telecommunication + Manufacturing + Government + College Assignments

$11.11 /hr
2 hours

Victor I.

Open Source Integrator/Developer: Perl/PHP, SQL(Oracle, MySQL), Java

Russia - Tests: 13

I'm looking for web site software implementation, customization, and maintenance projects. Being an experienced Perl/PHP and database developer, I would like to apply my skills to improve existing software systems. I can do usual HTML/CSS/bootstrap/jQuery tasks to make web sites look and operate well in browsers, but my primary capability here is developing background data processing scripts that perform ETL, sync, or indexing tasks. You may find lots of such projects in my project history and I'm willing to extend in this area. One of the assets I have developed is a custom Magento eCommerce product catalog import script that helps me fill any Magento-based site with product data in fast and reliable manner. I'm familiar with Amazon Web Services technology stack and can use it throughout my work for both production and auxiliary means. I can also perform server administration tasks including installation and upgrades for system software like Apache, nginx, OpenSSL, MySQL, PHP, Perl. I possess firm knowledge of availability and performance monitoring and backup automation as well. I'm comfortable operating remote servers using SSH and vim.

$40.00 /hr
73 hours

Siu Cheng

Database Developer

Hong Kong - Tests: 1

I bring 17 years of experience in application and database development. I have worked with both government and private enterprise in developing applications in large enterprise environments in Hong Kong, Macau and Australia. In recent years I was contracted to develop Oracle applications in New South Wales government. My high quality of work is testified by the fact that organisations continue to call upon me time and again for mission critical applications. I have written and presented documentation including user training and system demonstrations. I was the key database developer of a mobile services platform. The system provided SMS services to the entertainment and real estate industries. I am able to adapt to new technology quickly and has done so in many projects. She creates robust systems that run for many years with little intervention. I am a graduate of Hong Kong Polytechnic University where I studied Bachelor of Computer Science in Business Information Systems.

$48.00 /hr
2,726 hours