Dave on Data

The Dave on Data mission is to empower any professional (or team) with the DIY data science skills needed to unleash the power of AI technologies like Copilot in Excel.

What gets left out of the AI Hype Cycle is this:

AI will make you (or your team) wildly more productive.

**BUT**

You must have the requisite skills to make the most of AI.

**AND**

If these skills are lacking, you will not be able to recognize (and correct) the AI when it makes mistakes.

BTW - AI makes mistakes all the time.

Take Microsoft's Copilot in Excel AI as an example.

The "magical" scenarios where Copilot analyzes data using a few clicks and a couple of short prompts rely heavily on two things:

Python
Machine learning

Here's the thing, however. 

I've tested Copilot in Excel, which rarely generates the correct Python/machine learning code.

As the DIY data scientist, this is where you unleash Copilot's power.

I can teach you these DIY data science skills.

Regardless of role. Regardless of background.

Founder

TDWI

I develop and deliver live training experiences on data science topics such as data analysis and predictive analytics (e.g., machine learning). I focus on accelerating the data science journey for teams and organizations using a practical hands-on approach.

Training can be delivered virtually or in person with your team. The following offerings are certified by TDWI and can be taught using R or Python:

👉 Machine Learning Bootcamp
👉 Visual Data Analysis
👉 Linear/Logistic Regresion

💻 Learn more: https://daveondata.com/live-analytics-training

Data Science Consultant & Instructor

Schedulicity

VP of Analytics

Data Science Dojo

VP of Data Science

Microsoft

Sr. Director, BI and Analytics

Principal Program Manager

Sr. Director, Platform Architecture

Principal Architect

Ascentium Corp

Associate Partner, Solution Architect

Safeco Insurance

IT Architect

e-software, Inc.

Software Design Engineer

Programmer Analyst

I help ANY professional or team have more impact using data. Analytics demystified.

Want to differentiate yourself at work with Excel skills? Leaders aren't excited about this in 2025:

- Using PivotTables
- Knowing many Excel functions

You know what they're excited about: AI

And that means Copilot in Excel.

Here are the 4 steps to build the skills you need to master Copilot in Excel and impress your manager, business stakeholders, and executives:

1) Ignore "prompt engineering."
2) Learn Python.
3) Learn DIY data science.
4) Recognize hallucinations.

I want to help you own the future of Microsoft Excel.

I will help you get started today - for free.

Join 1,000s of professionals building skills for the future: 
https://daveondata.com/newsletter

David Langer

As an author, there's nothing quite like waking up to some good news from Amazon!

Back in May of 2023, I saw an early version of Python in Excel for the first time. I immediately knew I wanted to be a part of the most significant upgrade in Excel's analytics capabilities ever. 

And it didn't stop there.

When I first got access to Copilot in Excel's "advanced analysis" mode, I quickly saw Microsoft's vision for Excel's future. For professionals building Python analytics skills, the future of Excel lies in deep integration with Copilot AI to unleash the power of their data.

My book is the first step in building the skills for Excel's AI-powered future. It uses your existing knowledge of Excel to help you learn the Python foundation you need - fast.

If you're ready to make 2026 the year you embrace the power of Excel, AI, and data, you can pre-order my book here: https://lnkd.in/eQp4g5_d

#Excel #PythonInExcel #MicrosoftExcel

I help professionals and teams build better forecasts using machine learning with Python and Python in Excel.

PBR Life Sciences (Techstars '23)

At PBR Life Sciences, I played a pivotal role in steering the Finance Team, overseeing budgeting, financial forecasting, and regulatory reporting. My responsibilities included preparing monthly management accounts and ensuring accuracy in payroll processing. I successfully managed the year-end audit process, fostering strong relationships with auditors and financial institutions to enhance operational efficiency.

Financial Controller

Antonio Consulting

In my role at Antonio Consulting, I specialized in delivering bookkeeping, external audit, and tax services, ensuring clients adhered to regulatory standards. I conducted in-depth financial analyses to support SMEs, significantly improving their compliance with FIRS and CAC requirements. My efforts led to enhanced client satisfaction and operational efficiency.

Senior Consultant

Nivafer Engineering and  Construction Limited

Leadership and coordination of Finance Team.
Coordinate and direct the preparation of the budget and financial forecasts and report variances.
Preparing monthly Management accounts.
Coordinate the preparation of regulatory reporting.
Reporting on the daily treasury position of the company.
Review of monthly payroll for accuracy and completeness and processing for payment.
Presenting reports to senior executives, stakeholders, and board members.
Manage all accounting operations including Billing, A/R, A/P, GL, and Revenue Recognition.
Ensure that all financial transactions are properly recorded, filed, and reported.
Manage year-end financial audit process.
Interface with the auditors, tax authorities and banks.

Oil & Industrial Services

Prepare and publish timely monthly financial statements.
Coordinate the preparation of regulatory reporting.
Ensure quality control over financial transactions and financial reporting.
Manage and comply with local, state, and federal government reporting requirements and tax filings.
Liaising with the company’s Tax Consultants to avoid any back duty charge and other undeserved Tax liabilities as well as proactively manage the Tax Authorities.

Senior Accounting Coordinator

eStream Networks Limited

Coordination and preparation of annual budget for the company.
Coordination of monthly financial statements preparation.
Coordination of tax matters in the company.

Senior Manager,Financial Planning(Head,Finance Department)

uacn property development company plc.( A subsidiary of UACN Plc)

Proficiently identify the operations and processes of the business unit to be reviewed and the risks inherent in the processes while identify and assess risks at the assigned business unit.

Assess the adequacy of the design of existing controls within the subsidiaries and proffer recommendations as well as determine whether the KRI values of reviewed processes have exceeded the risk limit for the assigned Business Unit.

Risk assessment and validation exercise of the Hotel business (subsidiary) of the business unit. 

Ensure  statutory payment  like Tax, levies and other regulatory  requirements are complied with.

Re-computation of Taxes for accuracy and compliant to regulatory requirements.

Risk & Compliance Manager

Livestock Feeds Plc (A Subsidiary of UACN Plc)

Skillfully reviewed of financial reporting for reliability & timely reporting, operations for efficiency and effectiveness while keep a skeptical eye on the whole function.

Quarterly audit of all branches, conducted special investigations, and attending meetings with auditees to develop an understanding of business processes.

Internal Auditor(Head of Department)

Yinka Odunfa & Co (Chartered Accountants)

Engaged in the audit of Pension Funds, Financial services & Real estate companies, preparation of Financials, and tax computations with due compliance and policies and procedures.

Rectified & fixed the problems in a timely fashion, evolved new methods for improving the efficiency of the organization, and demonstrate a disciplined approach while assessing the risks.

Consultant/Auditor

Chief Financial Officer|Financial Controller | Finance Leadership | Financial Reporting | Automation 

I have 20 years post-qualification experience as Chartered Accountant spanning Audit firms, Manufacturing companies, Real Estate, Telecommunication, Oil and Gas Construction company. 

I help organization leverages Microsoft Power BI, Excel VBA, Power Query, Power Automate and Power Pivot for automation and reporting.

I am a graduate of Accounting from Lagos State University and hold an Executive MBA in Accounting and Finance from Obafemi Awolowo University.

I am a Fellow of:
Institute of Chartered Accountants of Nigeria (FCA), 
Institute of Financial Accountants (FFA)- United Kingdom
Institute of Public Accountants (FIPA)- Australia

In addition, I am an Associate of the Chartered Institute of Taxation of Nigeria (ACTI).

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Adeyemi Ladejobi MBA,FCA,ACTI,FIPA,FFA

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The Battle

David Langer

Adeyemi Ladejobi MBA,FCA,ACTI,FIPA,FFA

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