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Martin D.

@MartinDudumi

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5,0
65
6,3
6,3
97%

Senior Data Expert ( Data and Programming )

$25 USD / hora
・
Bandera de
Albania (7:53 a. m.)
・
Se unió el julio 1, 2019
$25 USD / hora
・
Results-driven Data Expert with 15 years of distinguished experience in: - Mastering advanced MS Excel, MS Access, and SQL. - Expert in leveraging complex Excel functionalities, including intricate formulas, pivot tables, and VBA macros, to deliver actionable insights and streamline reporting processes. - Proven ability to create dynamic dashboards and automate repetitive tasks, significantly enhancing operational efficiency. - Highly skilled in designing and managing sophisticated databases with MS Access, and optimizing SQL queries for robust data management and performance. - Demonstrated success in transforming large datasets into strategic insights and implementing innovative data solutions. - Eager to bring unparalleled analytical skills and advanced technical expertise to drive transformative data-driven strategies in a forward-thinking organization. Furthermore: ï‚· Developed and maintained advanced financial models using complex Excel formulas, including VLOOKUP, INDEX/MATCH, and nested IF statements. ï‚· Automated data processing and reporting tasks with VBA macros, resulting in a 50% reduction in manual effort and a significant decrease in errors. ï‚· Designed interactive dashboards with pivot tables and charts to track key performance indicators (KPIs) and provide actionable insights to senior management. ï‚· Conducted in-depth data analysis and created detailed reports, improving data accuracy and supporting strategic decision-making. ï‚· Created and optimized Excel spreadsheets for various data analysis projects, including sales forecasting and budget tracking. ï‚· Utilized pivot tables and slicers to facilitate dynamic data exploration and reporting for cross-functional teams. ï‚· Developed comprehensive data validation and error-checking protocols to ensure the integrity and reliability of data. ï‚· Provided training and support to team members on advanced Excel techniques and best practices. ï‚· Designed and implemented an MS Access database to manage production and sales interactions, including custom forms, queries, and reporting features. ï‚· Integrated SQL Server data with the Access database to provide a unified view of production data, improving production relationship management and sales tracking.
Verificaciones
A tiempo
97 %
Dentro del presupuesto
97 %
Aceptar tarifa
94 %
Tasa de recontratación
8 %

Portafolio

Portafolio

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Cambios guardados
5.0 · 65 Reviews
Opiniones
Avatar del usuario
I gave Martin a complex excel task that required a lot of specific data and calculations from other areas within the excel sheet and he completed this on the spot and even made changes when I requested them. Amazing work.
Morgan O.
@Morganorance
•
Bandera de
werris creek, Australia
•
hace 10 meses
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M
good to work with. communicator!
Toni G.
@MtArarat
•
Bandera de
Oklahoma CIty, United States
•
hace 10 meses
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Avatar del usuario
Fantastic working with Martin, he was patient and took the time to understand our needs and delivered great work, and was always there to help us troubleshoot.
Peter S.
@peter322
•
Bandera de
Paris, France
•
hace 1 año
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F
Very fast and no issues. Great work!
Farid M.
@faridbayan88
•
Bandera de
Chicago, United States
•
hace 1 año
Compartir
Avatar del usuario
Google Sheet with Macro/Script • €19 EUR
Really great guy, always in contact with me and did what i needed. Recommended and i will use him whenever i need it again!
Emanuel P.
@imaimz
•
Bandera de
Mem Martins, Portugal
•
hace 1 año
Compartir
Experiencia
External Lecturer
abr, 2014 - Presente
•
10 años, 8 meses
Polytechnic University of Tirana
abr, 2014 - Presente
•
10 años, 8 meses
• Giving lessons to students of Geology and Mining Faculty for a specific period of the year and mentor the students on their diploma's
abr, 2014 - Presente
•
10 años, 8 meses
Data Manager
jun, 2010 - Presente
•
14 años, 6 meses
Bankers Petroleum Albania
jun, 2010 - Presente
•
14 años, 6 meses
• Creating the correct environment to manage the corporate data sets to ensure accuracy, integrity and security also formulating techniques and algorithms SQL based for quality data collection to ensure adequacy, accuracy and legitimacy of data is one key skill. • Because of the Big Data environment the goal was always to implement efficient and secure procedures for data handling and analysis.
jun, 2010 - Presente
•
14 años, 6 meses
Production Engineer
jun, 2010 - oct, 2012
•
2 años, 4 meses
Bankers Petroleum Albania Ltd.
jun, 2010 - oct, 2012
•
2 años, 4 meses
• Assist engineering and other personnel to solve operating problems. • Confer with scientific, engineering, and technical personnel to resolve design, research, and testing problems, Direct and monitor the completion and evaluation of wells, well testing, or well surveys, Monitor production rates, and plan rework processes to improve production. Also analyze data to recommend placement of wells and supplementary processes to enhance production.
jun, 2010 - oct, 2012
•
2 años, 4 meses
Educación
Universiteti Politeknik i Tiranës
2004 - 2009
•
5 años
M.Sc. In Petroleum Engineering
Bandera de
Albania
2004 - 2009
•
5 años
Calificaciones
Basic and Expanded Petroleum Economics
2013
Petro skills, London
How to evaluate the economic viability of a project, Cash flow techniques applicable in economic evaluations, Models to weigh risk and uncertainty, Techniques to determine expected value, The effect finance, budgeting, and contractual agreements have on a project, The basic principles of accounting. Forecasting oil production.
2013
Introduction to Data Management
2014
Petro skills, London
Common data management issues and challenges, and the impact on the business, The important components of a data management framework, How to map issues onto a data management framework
2014
Oracle
2016
Stay Ahead London
Creating SQL statements to query database tables, Using standard aggregate functions and related SELECT statement clauses, Joining Tables, Managing sequences and synonyms , Oracle Database 12c.
2016
Certificaciones
P
Preferred Freelancer Program SLA
SQL - Level 1
SQL
Basic Numeracy - Level 1
Basic Numeracy
Data Entry
Data Entry
US English - Level 1
US English
AI Training - Freelancer Global Fleet
AI Training - Freelancer Global Fleet
Spanish - Level 1
Spanish
Italian - Level 1
Italian
OracleSQL - Level 1
OracleSQL
French - Level 1
French
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