Summary
Overview
Work History
Education
Skills
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Languages
Affiliations
Timeline
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Guillaume DIAWARA

Greater Cardiff Area

Summary

Accomplished professional with expertise in process optimization and continuous improvement, financial and transactional controls, and procure-to-pay. Demonstrated leadership and people management skills, coupled with strong stakeholder and relationship management abilities. Adept at strategic and analytical thinking, change and project management, as well as compliance and risk management. Committed to driving organisational success through innovative solutions and effective team collaboration.

Overview

10
10
years of professional experience
5
5
years of post-secondary education

Work History

International Deputy Head of Transactions

Heidelberg Materials
Greater Bristol Area
01.2024 - 03.2025
  • Leadership Scope: Manages a department of approximately 50 FTEs.
  • Customer Relationship Management: Oversees operations in multiple countries (~3), acting as the main point of contact for issue resolution.
  • Departmental Strategy: Implements strategies aligned with local requirements, global best practices, and the overall Business Service Center (BSC) strategy.
  • Customer Service: Builds strong relationships with local country leadership, ensuring needs are met without compromising BSC goals.
  • Continuous Improvement: Drives process improvements, approves initiatives, and ensures seamless communication and change management.
  • Budget & FTE Management: Monitors KPIs, manages departmental budgets, optimizes resources, and justifies additional hires when needed.
  • People Management: Supports recruitment, development, and retention of skilled staff, providing coaching and leadership guidance.

International Transactions Manager (Procure to Pay)

Heidelberg Materials
Greater Bristol Area
11.2022 - 12.2023
  • Team Leadership: Managed, motivated, and developed a team of ~20 P2P administrators, senior administrators, and team leads.
  • Process Improvement: Developed and implemented strategies to enhance the efficiency and effectiveness of the procure-to-pay process.
  • Accounts Payable Management: Optimized invoice processing, vendor management, and payment reconciliation.
  • Procurement Oversight: Ensured compliance with company policies and procedures in procurement operations.
  • Vendor Master Data: Supervised and maintained accurate vendor records.
  • Performance Monitoring: Analyzed and reported on key KPIs related to P2P operations.
  • Automation & Technology: Identified automation opportunities and implemented technology solutions for process efficiency.
  • Cross-Functional Collaboration: Worked with various teams to integrate and streamline the procure-to-pay process.

International Transactions Manager (Procure to Pay - P2P)

Heidelberg Materials
Bristol, United Kingdom
04.2021 - 10.2022
  • Team Leadership: Managed, motivated, and developed a team of ~12 administrators, senior administrators, and team leads.
  • Stakeholder Communication: Acted as an escalation point for international stakeholders, including French-speaking regions.
  • Issue Resolution: Handled process escalations from local teams, international suppliers, and team leads, providing practical and customer-focused solutions.
  • Process Standardization: Worked with global colleagues, Process Owners, and local management to optimize end-to-end processes.
  • Strategic Implementation: Supported the International P2P Manager in implementing operational changes and expanding geographic scope.
  • Team Development: Coached and developed team leads to maintain high performance standards.
  • Supervisory Support: Provided guidance to supervisors in prioritizing tasks effectively.
  • Initiative Leadership: Led department-wide and P2P Hub initiatives, fostering professional growth.
  • Performance Monitoring: Tracked performance using daily KPIs to ensure targets were met.
  • Transaction Volume: Oversaw a high-volume environment, processing ~125K transactions annually.

Financial Analyst

Safran
Cwmbran
05.2019 - 04.2021

ERP & Transaction Control: Aftermarket Controlling & Reporting: Financial Analysis & Reporting: Accounts Payable (AP) & Accounts Receivable (AR):

  • ERP Expertise: Primary M3 INFOR user in the Finance department.
  • Transaction Oversight: Monitored, corrected, and ensured accuracy of all financial transactions.
  • Month-End Procedures: Managed closing processes and reconciliations.
  • ERP Implementation: Led Phase 1 & 2 of ERP rollout, including GL, AR, and AP training.
  • Sales & Financial Reporting: Produced Aftermarket Daily Sales reports, Month-End closing, accruals, rebates, provisions (warranty).
  • Financial Analysis: Assessed repairs, margins, and order book performance.
  • Budget & Forecasting: Contributed to Aftermarket budget, forecasts, and rolling forecasts.
  • Overhead Control: Analyzed Aftermarket overheads and headcounts.
  • Overheads Analysis: Managed analysis and month-end closing for overhead costs.
  • Supplier & Customer Reporting: Conducted financial reviews and analysis.
  • Freight Cost Management: Tracked, coded, processed, and reported freight expenses.
  • MTP Financial Modeling: Contributed to the Medium-Term Plan (MTP) for 2019-2020.
  • Intercompany Invoices: Recorded, processed, analyzed, and reconciled invoices at month-end.
  • Accruals & Creditors: Managed accruals and creditor reconciliations.
  • KPI Tracking: Analyzed AP trends over five years, supplier invoices, and daily processing metrics.
  • ERP Integration: Managed financial data migration, period management, and transaction transfers.
  • Reconciliations: Oversaw reconciliations for banks, suppliers, and customers.
  • Process Optimization: Cleared backlog, resolved queries, and implemented finance procedures for new employees.

Financial Analyst intern

Airtel Business
New Delhi, India
07.2018 - 12.2018
  • Financial Modeling: Created, updated, and maintained financial models for business plans, budgets, and P&L statements.
  • Profit Optimization: Identified cost-saving levers to improve profitability, including employee cost reduction and overhead control.
  • Business Analysis: Evaluated revenues, trends, product performance, geographic markets, headcount, CAPEX, and OPEX.
  • Departmental Efficiency Assessment: Analyzed the cost-effectiveness of Sales, HR, Marketing, and IT departments to ensure sustainable business growth.
  • Executive Reporting: Provided weekly KPIs and financial analysis reports for executive committees on a weekly and monthly basis.Created, updated & maintained financial models: Business plan, budgets, P&L
  • Found solutions (levers) to increase the company's profit through KPIs: Reducing costs of the employees
  • Reducing costs of Overheads
  • Analysis of the business: Revenues, trends, products, countries, Heads, CAPEX, OPEX…
  • Assessed the cost-efficiency of each department of the company: Sales, HR, Marketing & IT
  • Analyzed if each department were efficient enough to help the company to grow well
  • Reports for executive committees: KPIs weekly, Analysis weekly and monthly

Financial Analyst intern

OVH
Paris Area
10.2017 - 04.2018
  • Financial Modeling: Developed business plans and P&L models.
  • Peer Benchmarking & Analysis: Conducted competitive analysis and valuation of peers using methods like sum-of-the-parts and comparables.
  • Strategic M&A Monitoring: Tracked and analyzed mergers & acquisitions opportunities.
  • Business Performance Analysis: Assessed revenues, trends, product and country mix, CAPEX, and margins.
  • Executive Presentations: Created PowerPoint presentations for executive committee members and business units.

INDEPENDENT CONTRACTOR

Appco Group
Région de Perth
08.2015 - 11.2015

Education

POSTGRADUATE - ADVANCED CORPORATE FINANCE - International Finance

ISBF & LSE
01.2016 - 01.2017

MASTER'S DEGREE - International Finance, Corporate Finance and investments

Ecole supérieure de Commerce de Pau
01.2015 - 01.2016

General cursus - Business management

Ecole supérieure de Commerce de Pau
01.2014 - 01.2015

HND in Management - Business Management

Itis Formation
01.2012 - 01.2014

Skills

  • Process Optimization & Continuous Improvement
  • Financial & Transactional Controls
  • Procure-to-Pay
  • Leadership & People Management
  • Stakeholder & Relationship Management
  • Strategic & Analytical Thinking
  • Change & Project Management
  • Compliance & Risk Management

Languages

Français
Native
English
Fluent

Affiliations

  • Travels
  • Investment & Trading
  • Outdoor Activities

Timeline

International Deputy Head of Transactions

Heidelberg Materials
01.2024 - 03.2025

International Transactions Manager (Procure to Pay)

Heidelberg Materials
11.2022 - 12.2023

International Transactions Manager (Procure to Pay - P2P)

Heidelberg Materials
04.2021 - 10.2022

Financial Analyst

Safran
05.2019 - 04.2021

Financial Analyst intern

Airtel Business
07.2018 - 12.2018

Financial Analyst intern

OVH
10.2017 - 04.2018

POSTGRADUATE - ADVANCED CORPORATE FINANCE - International Finance

ISBF & LSE
01.2016 - 01.2017

INDEPENDENT CONTRACTOR

Appco Group
08.2015 - 11.2015

MASTER'S DEGREE - International Finance, Corporate Finance and investments

Ecole supérieure de Commerce de Pau
01.2015 - 01.2016

General cursus - Business management

Ecole supérieure de Commerce de Pau
01.2014 - 01.2015

HND in Management - Business Management

Itis Formation
01.2012 - 01.2014
Guillaume DIAWARA