Business Intelligence & Power BI
Design of advanced dashboards, robust data models and reporting architecture. From operational monitoring to strategic decision-making.
Freelance consultant — Namur, Belgium
Power BI,
Data Analytics & Applied AI
I turn complex data into clear decisions by bridging the gap between technical analysis and real-world business needs.
10+
Years of experience
Business Intelligence · Power BI · Power Platform · Microsoft Fabric · Applied AI · ERP
Areas of activity
What I offer
Services tailored
to your challenges
From operational dashboards to full data architecture, I step in where added value matters most for your organisation.
Data Architecture & Automation
Automated hybrid pipelines (RPA, event-driven, scheduled), SAP integration, flow orchestration and real-time data refresh.
Applied AI & LLM Integration
Rigorous integration of generative AI: RAG on documents, Model Context Protocol on data models, Prompt & Context Engineering, and cross-validation. AI serving analytical rigor.
Business Application Development
Design of custom business applications, developed with the assistance of generative AI following a rigorous verification method: short iterations, independent result checking, systematic testing before deployment.
Financial Analysis
Expertise at the intersection of public finance and data. Budget monitoring, financial projections, reconciliation and regulatory compliance.
ERP & Data Integration
Exploitation and modelling of data from enterprise management systems to create automated reporting and connected dashboards.
Power BI & AI Training
Tailor-made programs to empower your teams. From Power BI fundamentals to the practical integration of AI (LLM, RAG) into your daily business processes.
Skills
Dual expertise,
singular impact
My added value: a dual expertise in budgetary economics and data analysis. I bridge development and business, enabling me to build solutions that genuinely address real challenges.
Enterprise BI Architect
Design of complex models, row-level security (RLS), rights management and sensitive data protection.
Public Finance Expert
Proficiency in SAP environments and the budgetary, accounting and regulatory specificities of public administrations.
Pragmatic AI Integrator
LLMs explain and synthesise; deterministic engines calculate. AI in service of rigour, not as a replacement for it.
Mastered environments
Business Intelligence & Data
Power BIMicrosoft FabricPower Query (M)DAX
Automation & Pipelines
Power PlatformSAP (AfO / BO)Power AutomateVBA ExcelETL Pipelines
Applied AI
Prompt & Context EngineeringRAGMCP (Model Context Protocol)LLM Integration
Business domains
Public FinanceBudget & TreasuryGDPRConsolidation
How we can work together
Choose the format that fits you
Depending on your needs, ongoing part-time strategic support, or a scoped engagement to deliver a concrete tool quickly.
Whether it's a Power BI model or an application built with the help of generative AI, the same discipline applies: clear architecture, traceable rules, real-world validation before anything goes into production.
Strategic Support
A few days per month · medium to long term
For organisations that want recurring expert input on their data ecosystem and AI-driven projects (Power BI, Microsoft Fabric, governance, AI-assisted development methodology) without hiring full-time.
- Audit and roadmap
- Architecture decisions
- Model review
- Support for internal teams
Development Sprints
Scoped engagement · short cycles, concrete deliverable
For teams that need a scoped, operational deliverable quickly: a Power BI dashboard, automation, or the creation of custom business applications — developed with a rigorous supervision method.
See a concrete reference ↓ Discuss a development sprintCustom Training
One-off session or structured programme, duration matched to your goals
For teams that want to build skills quickly, in Power BI or in the pragmatic use of AI in business processes. Content is tailored to your actual needs, never a generic template.
Discuss a training programmeProject references
An Enterprise application
end to end
Flagship project
Regional financial steering BI application
End-to-end design and development of a Power BI application centralizing all budgetary, execution, and treasury data for the regional consolidation scope. Fully automated hybrid architecture, user-profile security, GDPR compliance, and dynamic financial projections based on historical trends, enriched and supplemented by on-the-ground business expertise.
100%
Automated pipelines
Multi-source
SAP · SharePoint · Structured json & parquet files
Consolidation rules
Compliance with European accounting standards
Dynamic
Treasury projections based on historical data and business expertise
141 users
Active base (July 2026)
Modular architecture
Reading, computation and orchestration kept separate
100% local execution
No data leaves the workstation
33 automated tests
Every confirmed fix becomes a permanent safeguard
8 projection methods
Compared against each other to diversify projection assumptions
Prototype
Financial Planning & Analysis (FP&A)
Prototype of a Financial Planning & Analysis (FP&A) application, developed in short, iterative cycles, each step checked against real business needs and each result checked against an independent official source, through AI-assisted development guided by a rigorous, documented verification method (independent result checking, systematic testing). This working method is transposable to other business projects, in both the public and private sectors.
"Any complex calculation rule is proven correct before being coded — never the other way around."
Freelance consultant
CBE 1023.007.035
About
Maxime Goelff
Independent Power BI Consultant & Data Architect
Data Analyst and independent Power BI consultant (MgLytics), I work in parallel within the Data team at Wallonie Finances Expertises (WFE), where I develop and maintain financial steering tools for the Walloon Region.
My approach: Passionate about decoding complexity, I rely on my dual experience in financial economics and data analysis to bridge the gap between numbers and real-world decisions. Dedicated to fostering clear and honest dialogue with my clients, I prioritize the rigorous cross-checking of data to deliver robust and objective empirical insights. My goal is to build a shared understanding to address organizational challenges and translate business needs into operational solutions.
Based in Namur, I work with organisations looking to make better decisions through their data: public sector, non-profits, SMEs or large enterprises.
Public Sector
Non-profits & NGOs
Finance & Audit
Management Control
Regional Administration
Businesses
Contact
Let's discuss your challenges
A dashboard project, a Power BI question or just want to grab a coffee and talk? I reply to all messages within 24 hours.
Direct e-mail
Maxime@MgLytics.be
Phone
+32 473 821 812
LinkedIn
Maxime Goelff
Location
Namur, Walloon Region
Message sent!
Thank you for your message. I will get back to you as soon as possible, usually within 24 hours.
Your questions
Frequently Asked Questions
What services does MgLytics offer?
Founded by Maxime Goelff, MgLytics offers technical and strategic data consulting services. Our interventions cover Business Intelligence (Power BI dashboard creation), data architecture (pipeline automation and ERP integration), financial analysis, the pragmatic integration of Artificial Intelligence (RAG, LLM) into your business processes, as well as the development of custom AI-assisted business applications, following a rigorous verification method.
Do you offer training on Power BI and Artificial Intelligence?
Yes. Beyond developing tools, we provide tailored training and coaching to make your teams autonomous. Whether you want to master data modelling in Power BI, learn DAX, or understand how to integrate generative AI to solve your challenges, we design programmes adapted to your operational reality.
In which regions do you operate?
Based in the Namur province, we operate on-site within organisations located across the Walloon Region, Brussels, and the Hauts-de-France region. To ensure flexible and responsive collaboration, all our consulting and training missions can also be conducted remotely or in a hybrid format.
Why combine technical expertise with public finance?
Mastering technical data tools (DAX, Power Query, AI) coupled with strong business experience (SAP, budgetary accounting) allows us to create dashboards that are directly actionable. We translate your financial challenges into genuine decision-support solutions for both the public and private sectors.
I have scattered and unclear data (Excel, business software), can you help me?
Absolutely. A large part of our work involves automating the consolidation of multiple sources, but also interpreting unstructured data: extracting a bank payment reference from free-text remittance information to match it with certainty to its payment record in SAP, for example. We design pipelines (ETL) that extract, cleanse, interpret and secure your data to feed a single central model, guaranteeing a "single version of the truth" for your reporting.
How do you transform scattered and unstructured data into management tools?
This is the core expertise of MgLytics, already proven with top management in the Walloon administration. We capture, cleanse, and cross-reference your data, whether it comes from multiple or unstructured sources. We then transform it into intuitive dashboards (Power BI) coupled with pragmatic AI. Our solutions cater to a dual audience: a macro, executive overview for management, and a detailed, practical view for operational teams.
How do you ensure the reliability of an application built with the help of generative AI?
Through a rigorous verification method, not blind trust in AI. Every result produced is checked against an independent reference source before being accepted — never a mere self-review by the same system that produced it. Any complex calculation rule is proven correct before being coded, never the other way around. And every confirmed fix becomes a permanent automated test, so a solved problem can never silently reappear. This discipline — AI-assisted development guided by rigorous expert human verification — is transposable to other sectors, not just public finance.
Was this website built with the help of AI?
Yes. This site's structure, code and text were developed with the assistance of generative AI, based on direction and specific wording I provide in my conversations with it, so that the published content genuinely represents me. I apply to it the same discipline described above: independent verification of every result, short iterations tested against reality, and nothing published without a thorough critical review. It's the same method I offer my clients.