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I need assistance in building complex data models using Power Query, Power Pivot, and VBA. The data will be sourced from multiple CSV files. Key Requirements: - Integrate and transform data from multiple CSV files - Build complex, efficient data models - Review and optimize existing VBA scripts - Provide an initial consultation to review the current workbook, explain and demonstrate encountered issues, and discuss recommendations before implementation Ideal Skills and Experience: - Proficiency in Power Query, Power Pivot, and VBA - Experience with CSV data manipulation - Strong data modeling skills
Project ID: 40482159
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66 freelancers are bidding on average $20 USD/hour for this job

Power Query, Power Pivot, and VBA are not just tools for me; they are integral parts of my professional universe. Applying them skillfully, I've mastered the art of integrating and transforming even the most complex data sets. Your project aligns perfectly with my expertise. I have been delving into CSV data manipulation since the start of my career. Over the years, I have built up significant experience in building efficient data models using Power Query and Power Pivot. My command over VBA will enable me to thoroughly review and optimize your existing scripts too. As a finance professional, I understand how crucial accurate and timely data is for decision-making, and that's why I am committed to providing such a high standard of service. In addition, as part of my services package, I also offer an initial consultation where we can review your current workbook together and discuss potential challenges, optimization options, and recommendations prior to implementation. This approach ensures transparency in our collaboration and allows us to tackle any encountered issues proactively. Moreover, my dedication towards client satisfaction means that you won't just receive a well-executed project, but ongoing support even after our contract has ended. Let's bring your complex data model vision to life while exceeding your expectations!
$15 USD in 10 days
7.6
7.6

Hello, I can help you build a reliable Excel data model based on multiple CSV files using Power Query, Power Pivot, and VBA. You will receive a clean and structured solution that can import, combine, transform, and refresh CSV data efficiently, with a data model designed for performance, accuracy, and easy analysis. I can also review your existing VBA scripts, improve logic, remove errors, optimize speed, and make the workbook easier to maintain. Before implementation, I can provide an initial consultation to review the current workbook, identify the issues, demonstrate the problems, and recommend the best structure for the final solution. My experience includes Excel automation, Power Query, Power Pivot, VBA, financial and operational data models, dashboards, reconciliation tools, and database analysis from accounting and business systems. I can also integrate ChatGPT API queries into the VBA/Excel code where useful, allowing the model to generate insights from text and numbers, summarize data issues, classify records, or support smarter analysis. The final workbook will be practical, scalable, and clear for daily use.
$25 USD in 40 days
7.5
7.5

Hello, We've thoroughly reviewed your project requirements for building complex data models using Power Query, Power Pivot, and VBA. Your need to integrate multiple CSV files into efficient data models, alongside reviewing and optimizing existing VBA scripts, aligns perfectly with our expertise. In a recent project, we successfully developed a robust data integration system using similar tools, enhancing the client's data processing capabilities significantly. Our approach centered on clear communication and precision, which we intend to bring to your project. With our vast experience in data processing and intelligent systems, we are well-equipped to handle intricate data manipulations and integrations. Our proficiency in Power Query and VBA, coupled with our background in data analysis, ensures that we can elevate your project efficiently and effectively. As a Top 1% freelancer with over 200 satisfied clients, our track record speaks volumes about our commitment to quality and innovation. We invite you to message us with more details. We'll provide a tailored proposal within 24 hours, ensuring a clear path forward for your project. Looking forward to collaborating with you. Best regards, Puru Gupta
$60 USD in 40 days
7.0
7.0

Hi there, I understand you need assistance building and refining complex Excel data models using Power Query, Power Pivot, and VBA, with data sourced from multiple CSV files. I am confident I can help review your existing workbook, identify bottlenecks and issues, and implement a scalable solution that improves both performance and maintainability. My approach will be to begin with a detailed consultation where we review the current workbook together, examine the existing data model, Power Query transformations, and VBA scripts, and identify any issues affecting accuracy, refresh performance, or usability. I will then recommend the most efficient structure for importing, cleansing, and combining data from multiple CSV sources while ensuring the model remains easy to maintain as data volumes grow. Using Power Query, I will build robust ETL processes for data preparation and transformation. Power Pivot will be used to create optimized relationships, calculations, and reporting structures, while any existing VBA code will be reviewed, debugged, and enhanced where necessary to improve automation and reliability. Throughout the process, I will focus on reducing manual effort, improving refresh speed, and ensuring data consistency. Approximately how many CSV files and records are involved in a typical refresh cycle, and are there any current performance issues you are experiencing with the workbook? I’m ready to start immediately. Warm Regards, Aneesa.
$15 USD in 40 days
7.0
7.0

Hello, my name is Shivam. I’m a Data Scientist with extensive experience in Excel automation, Power Query, Power Pivot, VBA, and complex data modeling. I can help review your existing workbook, identify bottlenecks and issues, and then build an efficient, scalable data model that integrates and transforms data from multiple CSV sources. My approach: • Initial consultation to review the workbook and discuss current challenges • Design and optimization of Power Query ETL workflows • Development of Power Pivot data models and relationships • Review, debugging, and performance tuning of existing VBA code • Recommendations for scalability, refresh performance, and maintainability You will receive: • Optimized Power Query and Power Pivot model • Improved and documented VBA scripts • Clear explanation of issues and implemented solutions • Best-practice recommendations for future expansion I have worked extensively with large CSV-based datasets, automated Excel solutions, and performance optimization, and I'd be happy to review your workbook and discuss the best approach before implementation. Looking forward to collaborating.
$20 USD in 40 days
7.5
7.5

I ALREADY MADE SIMILAR PROJECT LIKE THAT BEFORE. I can build robust data models using Power Query, Power Pivot, and VBA, integrating and transforming data from multiple CSV files into an efficient, scalable reporting solution. My approach focuses on clean data architecture, optimized performance, automated refresh processes, and maintainable documentation. 10+ years Advanced Excel experience, Certified VBA Programmer, MBA.
$15 USD in 40 days
6.6
6.6

Hello, I can help review, optimize, and extend your existing workbook using Power Query, Power Pivot, and VBA to create a scalable, high-performance data model from multiple CSV sources. My approach: • Initial consultation to review the current workbook and understand pain points • Analysis of existing Power Query flows, data model relationships, and VBA code • Identification of bottlenecks, refresh issues, and data integrity risks • Recommendations before implementation so you can approve the direction • Development of an optimized Power Query ETL process for multiple CSV files • Creation/refinement of Power Pivot measures, relationships, and KPIs • VBA review, debugging, refactoring, and performance improvements Deliverables: • Clean and efficient data model • Optimized Power Query transformations • Improved and documented VBA code • Recommendations report and implementation notes • Guidance on future maintenance and scalability I have extensive experience building advanced Excel solutions that combine Power Query, Power Pivot, DAX, and VBA for large datasets and complex reporting requirements. Best Regards, Ayaz Akhtar
$20 USD in 40 days
6.8
6.8

I am well-suited for your "Complex Data Model Development" project, with extensive experience in Power Query, Power Pivot, and VBA. My career has focused on integrating and transforming data from diverse sources, including CSV files, to build sophisticated data models. I have successfully completed numerous projects involving data from multiple CSV files, requiring intricate transformations and efficient modeling in Power Query and Power Pivot. My proficiency in VBA allows me to automate and enhance data processes, ensuring accuracy and optimizing workflows. These skills position me to effectively manage the complexities and requirements outlined in your project description. I am interested in discussing how I can contribute to your project's success. Would you be able to provide further details about the specific challenges you foresee in integrating and transforming your data? Feel free to reach out if you require more information about my background.
$20 USD in 40 days
6.4
6.4

Hello, I am a Power Query, Power Pivot, and VBA specialist who will review your current workbook in an initial consultation (screenshare or annotated walkthrough) to explain encountered issues and recommend a fix strategy before any implementation. Then I will integrate and transform your multiple CSV files into an efficient data model using Power Query for ETL, Power Pivot for relationships and DAX measures, and optimize or rewrite your existing VBA scripts where needed. Deliverables: a clean, high-performance workbook with documented steps. Please share a sample of your CSV files and current workbook to prepare the consultation. Regards, Zafar
$15 USD in 40 days
6.2
6.2

Hi, you want clean, efficient data models that pull together multiple CSV files through Power Query, shape them in Power Pivot, and use VBA where it adds control, so messy source files turn into one reliable model you can build on. This is squarely my work, I build data models and VBA-driven Excel systems regularly, including multi-source dashboards that consolidate scattered inputs into a single structured engine. I'd set up Power Query to import and transform all the CSVs on refresh, build the relationships and measures in Power Pivot, and layer in VBA for any automation the model needs beyond formulas. The result stays fast and easy to refresh as new files come in. Two quick questions: roughly how many CSV files and how often do they refresh, and do the files share a consistent structure or will they need cleaning and matching first? Share a sample or two and I'll map the model approach.
$20 USD in 40 days
5.9
5.9

As someone who possesses a strong command over Power Query, Power Pivot, and VBA, I am confident in my ability to execute this complex data model project with precision and efficiency. Being fully conversant with manipulating CSV files, I can seamlessly integrate and transform multiple data sets for a comprehensive analysis. My inclination towards meticulousness drives me to ensure the accuracy of your complex data models. Not only do I have an adept understanding of data modeling, but I also bring extensive experience in utilizing Microsoft Excel for various business purposes, which serves as an added advantage. Whether it entails document formatting, cleanups or even web scraping, I have consistently produced top-tier results aligned with the specific requirements of my clients. Having me on board ensures clear communication, prompt responses, and timely deliveries - facets that you will benefit from throughout this project. With a penchant for detail and high regard for client satisfaction, I will leave no stone unturned in ensuring that your expectations are met and surpassed. Let's take this project forward together!
$15 USD in 25 days
5.3
5.3

⭐⭐⭐⭐⭐ 0From Power Query to Visual Basic, our team at CnELIndia encompasses all the essential skills required for your complex data modeling project. For over 18 years, we have been working with diverse datasets, including CSV files, and have extensive experience in integrating and transforming complex data sets efficiently. I understand that the efficiency and reliability of your data model is crucial for your project. Our strong command over Power Query, Power Pivot, and VBA ensures we deliver robust models that meet your needs. Furthermore, our proficiency in data mining further supports your project's requirement and gives us a holistic understanding to translate your business needs perfectly into functional code. Overall, with our vast experience in web and app development, proficiency in data mining and visual basic combined with our drive for innovation, I assure you that partnering with us would yield the most optimal results for your complex data model development. Let's transform the intricacy of multiple CSV files into a structured dataset for you to base your decisions on!
$20 USD in 40 days
5.5
5.5

Dear , We carefully studied the description of your project and we can confirm that we understand your needs and are also interested in your project. Our team has the necessary resources to start your project as soon as possible and complete it in a very short time. We are 25 years in this business and our technical specialists have strong experience in Visual Basic, Data Processing, Excel, Data Mining, Data Analysis, Data Integration, Data Modeling, Data Management and other technologies relevant to your project. Please, review our profile https://www.freelancer.com/u/tangramua where you can find detailed information about our company, our portfolio, and the client's recent reviews. Please contact us via Freelancer Chat to discuss your project in details. Best regards, Sales department Tangram Canada Inc.
$25 USD in 5 days
5.4
5.4

Hi, I am a data analyst and Excel automation specialist with 8 years of rich experience in software development and data solutions. I am familiar with Power Query, Power Pivot, VBA, Excel, Data Modeling, Data Integration, Data Processing, Data Analysis, Data Mining, and CSV data transformation. I can review your existing workbook, analyze the current data flow and VBA implementation, and provide recommendations before making changes. I can then build and optimize complex Power Query and Power Pivot models, integrate data from multiple CSV sources, improve performance, and refactor VBA scripts to make the solution more reliable, maintainable, and efficient. I'm an individual freelancer and can work on any time zone you want. Please contact me with the best time for you to have a quick chat. Looking forward to discussing more details. Thanks. Emile.
$25 USD in 40 days
5.3
5.3

Hi, This aligns well with my experience in Excel-based BI and data modeling. I have extensive hands-on experience with Power Query, Power Pivot, DAX, VBA automation, and building scalable data models from multiple CSV sources. My focus is always on creating a clean, efficient model that remains easy to refresh and maintain as new files are added. I can help with: • Importing and consolidating multiple CSV files using Power Query • Data cleansing, transformation, and normalization • Designing fact and dimension tables using best-practice modeling techniques • Building Power Pivot relationships and DAX measures • VBA automation for refreshes, imports, and reporting workflows • Performance optimization for large datasets My typical approach is: 1. Analyze source CSV structures 2. Build Power Query ETL processes 3. Create a scalable star-schema data model 4. Develop DAX calculations and KPIs 5. Automate repetitive tasks using VBA where appropriate I have built similar solutions involving financial, operational, audit, inventory, and reporting datasets, often combining dozens of CSV files into a single refreshable model. I can start immediately and would be happy to review a sample of the CSV structure before proposing the final model design. Thanks Shivani
$20 USD in 40 days
4.7
4.7

As an experienced full-stack developer, a major part of my work has been centered around data modeling and management which is precisely what your project needs. I have a proven track record of building complex, efficient data models, often integrating massive amounts of data from multiple sources. My expertise in Power Query, Power Pivot, VBA, and handling CSV data will enable me to seamlessly integrate and transform your files while optimizing the existing VBA scripts. I understand the need for a detailed and thorough understanding of the project parameters before jumping into implementation. I diligently review the current workbooks, explain encountered issues, and discuss recommendations with clients beforehand. This enables you to have a clear picture of how I intend to solve your problems, fostering effective communication, and leading to better end solutions. My client ratings speak volumes about my project management skills— both in terms of meeting deadlines and delivering high-quality work. The five-star ratings and positive reviews specifically for Excel work make me confident that I can not only fix your broken files but transform them into efficient tools within 24 hours. With my skills and experience at scale working on high-throughput architecture, I am confident in my ability to ensure that the delivered data models are fast, clean, and fully-production ready.
$15 USD in 40 days
4.3
4.3

Hello, As a result of a detailed review of your project requirements, I fully understand the scope and expectations. I have experience building Excel-based data models from multiple CSV sources and optimizing Power Query, Power Pivot, and VBA workflows, and I'm available to start your project right now. I bring deep expertise in Excel, Power Query, Power Pivot, VBA, Data Integration, Data Modeling, Data Processing, and Data Analysis. One of the key challenges in projects like this is creating a reliable structure that can handle repeated CSV imports without breaking calculations or slowing down the workbook. My approach is to first review your current workbook, identify issues in the data flow and VBA scripts, then build optimized queries, clean relationships, efficient measures, and maintainable automation. I have a couple of quick questions. • Are the CSV files always in the same format, or do column names/structures change over time? • Is the final output mainly dashboards, reports, reconciliations, or export-ready tables? I would be glad to begin with an initial consultation and provide clear recommendations before implementation. Looking forward to hearing from you. Best regards, Carlos.
$15 USD in 40 days
3.8
3.8

I'm Akanji and I'm confident I can meet your needs for this complex data model project. My skills in Power Query, Power Pivot, and VBA, combined with my experience working with CSV data manipulation make me the ideal fit for integrating and transforming your multiple CSV files into a well-built data model. My approach to data modeling isn't just about filling cells; it involves architecting systems that transform your raw, messy data into powerful, reliable tools that save you hours of manual work every week. And that's exactly what I'll deliver for you. In addition to building efficient models, I always review and optimize existing scripts in my projects. I would be pleased to provide an initial consultation where we can review your current workbook together, discuss encountered issues, and develop impactful solutions before moving forward. Hiring me means hiring someone who not only has the necessary technical skills but also understands the critical need for accuracy, clear communication, and fast turnaround times in working with complex data like yours. With me as your partner, you can reclaim your invaluable time while enjoying a clean, user-friendly and error-proof workbook that allows you to make better decisions faster. Don't hesitate; 'Hire Me' so we can get started on streamlining your data processes!
$25 USD in 40 days
3.9
3.9

Hi, I’ve done similar Excel automation and data modeling work using Power Query, Power Pivot, VBA, and multiple CSV data sources. I can start with an initial consultation to review your current workbook, identify performance issues, explain the problems clearly, and recommend the best structure before implementation. Then I can integrate and transform your CSV files, build an efficient data model, create clean relationships and measures, and review or optimize the existing VBA scripts so the workbook is faster, more reliable, and easier to maintain. I’ll keep the solution practical, documented, and aligned with how you actually use the workbook. Best regards, George
$20 USD in 40 days
3.6
3.6

I have over 30 years of VBA experience using Excel as Database, linking multiple works and also teaching VBA
$15 USD in 12 days
3.5
3.5

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