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Welcome to ChallengeJP!

My name is Jacek, and Iโ€™m here to help you solve your Excel spreadsheet and data challenges. Whether youโ€™re looking to develop or refresh your spreadsheet skills or someone to help you analyse and process your business data, I can help.

With my Excel and data analytics support, your business can benefit from Financial Modelling, Data Analytics and One-to-One Training. I can help you gain valuable insights into different aspects of your business, identify ways to improve your businessโ€™s performance and workflow, create accurate cash flow forecasts and much more. By bringing data to life through captivating reports, analysis, and insights, I can help your business thrive.

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Why Choose ChallengeJP?

  • Over 10 Years of Experience โ€” With over 10 years of experience in Financial Modelling and Data Analysis, I have helped businesses in many industries make sense of their data.
  • Take Control of Your Data โ€” Whether you use my services or Excel training courses, youโ€™ll be in control of the process and the result โ€” you can decide what you want to learn and which aspects of your project youโ€™d like me to take care of for you.
  • Personalised One-to-One Solutions โ€” I offer personalised solutions to help you master spreadsheets and maximise data value. My courses are held on a one-to-one basis, so I can customise them to your skills and pace of learning. I also tailor my financial modelling and data analytics support to your business needs and desired results.
  • Hands-On Learning Experience โ€” Listening, watching and taking notes can only get you so far. ChallengeJP courses give you the chance to apply lessons to practical examples. With hands-on learning experience, youโ€™ll develop confidence in using and creating spreadsheets.
  • Competitive Pricing โ€” All of the ChallengeJP services are competitively priced so you can get the help you need without breaking the bank. Whether you use my Excel courses and training to develop your skills or bring me on board to help with a business project, I will always offer you fair and competitive prices.

One of the smartest people that I have worked with

Jacek is one of the smartest people that I have worked with. His ability to provide huge swathes of in-depth analysis are impressive to say the least and his brain is seemingly able to compute huge amounts of data whilst his Excel skills are second to none. He is also a really great guy and I am confident that he would be an invaluable asset to any company.

James Kaye, Director and Co-Founder at Big Ideas Machine

ChallengeJP Excel and Data Consulting Services
5
2020-04-08T12:29:41+02:00

James Kaye, Director and Co-Founder at Big Ideas Machine

Jacek is one of the smartest people that I have worked with. His ability to provide huge swathes of in-depth analysis are impressive to say the least and his brain is seemingly able to compute huge amounts of data whilst his Excel skills are second to none. He is also a really great guy and I am confident that he would be an invaluable asset to any company.

Highly skilled in financial modelling and complex business case development

Jacek is a real top performer and highly skilled in financial modelling and complex business case development. I worked with him on a number of high value transactions and his expertise was invaluable to deal structuring and closing. Highly Recommended!

Andy Nash, Head of Public Sector and New Cities at CityFibre

ChallengeJP Excel and Data Consulting Services
5
2020-04-10T11:20:52+02:00

Andy Nash, Head of Public Sector and New Cities at CityFibre

Jacek is a real top performer and highly skilled in financial modelling and complex business case development. I worked with him on a number of high value transactions and his expertise was invaluable to deal structuring and closing. Highly Recommended!

A very competent and detailed financial analyst

I have worked closely with Jacek during intensive periods of financing, needed to fund the growth of CityFibre PLC. Jacek's work was pivotal to the success of these initiatives. He is a very competent and detailed financial analyst and his work is not only reliable but creative. Extremely hardworking and intelligent guy. I enjoyed working with him.

Peter Manning, Chairman of CityFibre Holdings PLC

ChallengeJP Excel and Data Consulting Services
5
2020-04-08T12:24:20+02:00

Peter Manning, Chairman of CityFibre Holdings PLC

I have worked closely with Jacek during intensive periods of financing, needed to fund the growth of CityFibre PLC. Jacek's work was pivotal to the success of these initiatives. He is a very competent and detailed financial analyst and his work is not only reliable but creative. Extremely hardworking and intelligent guy. I enjoyed working with him.
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ChallengeJP Excel and Data Consulting Services

Latest Blog Posts

Check out my latest blog posts to discover Excel insights, guides and tutorials. My in-depth articles can help you use Excel more efficiently and master the art of data analysis and financial modelling.

How to Create a Monthly Budget and Forecast

Last Updated on May 29, 2025 This tutorial will show how to create a Monthly Budget and Forecast in Microsoft Excel. It will first cover estimating revenues. Then, it will move on to cost calculations, including direct expenses such as marketing or operating expenditures such as salaries or office expenses. Finally, I will discuss estimatingRead More »How to Create a Monthly Budget and Forecast

How to Create a Mergers and Acquisitions Model

Last Updated on May 29, 2025 A Mergers & Acquisitions financial model helps evaluate how two companies perform together after a transaction. This guide walks you through building an M&A forecast in Microsoft Excelโ€”from analyzing historical financials to forecasting synergies, modelling debt financing, and assessing the impact on valuation and returns. You’ll also learn howRead More »How to Create a Mergers and Acquisitions Model

How to Create a Capital Investment Plan

Last Updated on May 29, 2025 In this tutorial, I’ll walk you through setting up a full capital investment forecast in Microsoft Excel – from modelling capex injections to building Profit and Loss, Cash Flow, and Balance Sheet Statements. You’ll also learn how to link your capital investment to customer growth, calculate returns on investment,Read More »How to Create a Capital Investment Plan