Clément Villalard | Power BI Developer & Consultant

Hi, I'm a BI Developer and Consultant specialising in Power BI and end-to-end data solutions. I design and deliver scalable reporting systems that turn complex data into reliable insights for better decision-making.

Contact

About

My name is Clément Villalard, and I'm a BI professional with over 5 years of experience delivering data solutions in real-world business environments, particularly within energy consulting.

I've built robust, production-grade BI systems in complex data ecosystems, developing strong expertise in data modelling, reporting automation, and enterprise-level Power BI development.

My work focuses on building scalable reporting systems that reduce manual effort, improve data reliability, and enable faster, more informed decision-making.

Alongside my current role, I take on a limited number of BI consulting engagements and am available for contract opportunities.

Location

Remote, UK

Engagement

Power BI · Data visualisation · Dashboard

Certifications

Microsoft Certified: Power BI Data Analyst Associate
Data Analyst Associate - DataCamp
Matplotlib Journey - Yan Holtz
Fabric from Rookie to Rockstar - Radacad

My approach to BI

To me, good BI isn’t just about building pretty dashboards. It’s about creating scalable, maintainable solutions that drive real business value.

I focus on efficiency and automation in every solution I build. The goal is simple: reduce manual effort, improve data reliability, and help teams make faster, better decisions.

While Power BI is powerful out of the box, the real value comes from pushing it further. Using advanced DAX, custom visuals, and Microsoft Fabric, I build tailored solutions that go beyond reporting, turning data into a true competitive advantage.

Services

What I can do for you.

Power BI expert with hands-on experience developing full BI solutions and integrated bespoke data visualisation projects.

End-to-end BI Solutions

Complete Power BI solutions from raw data to actionable insights.

Bespoke Data Visualisation

Custom Deneb/Vega-Lite visuals inside Power BI and publication-grade outputs, tailored to your brand and data.

Power BI Consulting

Need help with a specific Power BI project? From one-off report improvements and performance fixes to short-term advisory work, flexible engagements to fit your needs.

About this service

I embed with your team to design, build and deliver complete Power BI solutions, from data modelling and DAX development through to executive dashboards and user adoption. Typically engaged for several months.

What's included

Data model design and implementation
DAX development
Power BI report and dashboard development
Executive and operational reporting
User adoption and handover

3+ months engagements Remote / hybrid

Discuss an engagement

About this service

Off-the-shelf visuals rarely tell the full story. I design and build bespoke, publication-grade visualisations using Deneb/Vega-Lite inside Power BI and Matplotlib for standalone outputs, tailored to your brand, your data and your audience.

What's included

Deneb / Vega-Lite custom visuals inside Power BI
Organisational template packages
Publication-grade Matplotlib visualisations
Tailored to your brand and colour palette

Project-based Priced per visual / project

Discuss a project

About this service

Whether you need an existing report improved and optimised, a specific DAX challenge solved, or short-term hands-on help with a Power BI project, I offer flexible, scoped engagements to get the job done.

What's included

Report improvements and visual polish
DAX measure audit and optimisation
Data model and schema review
Performance and refresh bottleneck analysis
Short-term advisory and hands-on delivery

Remote Fixed-price or day rate One-off or short-term

Discuss your project

Portfolio

Selected work.

Power BI dashboards, Deneb/Vega-Lite templates and publication-grade visualisations. Find more in my LinkedIn feed and GitHub repositories.

Real-World Scenarios

Selected end-to-end projects and results.

Data Architecture Reconciliation across Two Systems

Senior BI Developer

Microsoft Fabric Notebooks SQL Lakehouse

Challenge

The company had two parallel databases with different architectures and reporting logic, leading to inconsistent reports, manual reconciliation and delayed insights.

Action

Implemented a unified data architecture to reconcile the two systems.
Developed pipeline and ETL processes to ensure data consistency and accuracy.
Processes written in Fabric notebooks for increased collaboration, maintainability and documentation.

Result

Successfully reconciled data across both systems, ensuring consistent and accurate reporting.
One source of truth integrated in the Microsoft ecosystem.
Company can now have a reconciled view of their data for better decision-making.

New BI Product for Clients

Lead Developer · Concept Owner

Power BI Power Query DAX

Challenge

The company were delivering bespoke dashboards to clients but had no standardised product offering, leading to high development time and limited scalability.

Action

Conceived and developed a standardised BI product for clients.
Automation of the creation process to minimize manual effort and errors.
Collaboration with my manager and the sales team to ship the offering to clients.

Result

Product actively adopted by multiple clients, generating repeat business.
Positive client feedback received throughout.
Company now selling this product commercially, creating new revenue streams.

Time-consuming report automation

Lead Developer

Python Excel

Challenge

A team member was spending 4 hours every week manually importing data from multiple sources into Excel, performing transformations and generating reports, a lengthy process prone to errors and delays.

Action