Guillaume Lemieux

Energizer
DISC Type : I

Director of Engineering at 5C

Montreal, Quebec, Canada

Overview

Guillaume Lemieux is the Director of Engineering at 5C, bringing over 10 years of experience in process engineering and industrial water management. His career includes key roles at Amazon Web Services, where he managed data center engineering operations. He holds a Baccalauréat from Polytechnique Montréal and is skilled in both on-field and management processes.

His career path shows a unique transition from industrial environmental services and HVAC project engineering to leading critical data center facility operations for major technology companies.

Personality Overview

Imaginative

Relationship Oriented

Informal

They are not always early adopters but can be pursuaded by leveraging strong relationships.  They excel at seeing the bigger picture, and the long-term impact of their decisions. Unlike C or D types, they are vocal with their opinions but not so much with their questions.

Topics They Care About

Data Center Operations
His career progression at Amazon Web Services and current role as Director of Engineering at 5C centers on managing critical data center facilities and engineering operations.
Process Engineering
With a decade of experience and a strong educational background, he has hands-on knowledge of process engineering, supported by field, lab, and management experience.
Team Leadership
He has posted about hiring for his team and expressed excitement about working with an "amazing team" to build great things and tackle new challenges.

Media Appearances

Guillaume has no verified media appearances

Work History

12-2025
Director of Engineering at 5C
5-2025 - 12-2025
Data Center Engineering Operations Chief Engineer at Amazon Web Services (AWS)
10-2022 - 7-2025
Facilities Manager at Amazon Web Services (AWS)
4-2021 - 10-2022
Data Center Engineering Operations Chief Engineer at Amazon Web Services (AWS)
7-2020 - 4-2021
HVAC Project Engineer at Magnus Chemicals Ltd

Education

2005 - 2009
Baccalauréat from Polytechnique Montréal

More Information

Social Presence :

Prographics :

Exp : 9 Location : Montreal, Quebec, Canada Job Level : Mid-senior Designation : Director of Engineering at 5C
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Insights For Selling To Guillaume

During A Call Or A Meeting

DO's

  • Do some small talk, ask them how things are going on their side
  • Share some stories about how you you have helped people in similar positions succeed
  • Talk anecdotally about the customer experience that your product offers

DONT's

  • Don’t push them to make a decision too fast, let them get comfortable first
  • Don’t be excessively objective, be a storyteller
  • Avoid ifs and buts, don’t talk too much about the risks etc.

When Cold Calling

When Writing An Email

While Negotiating & Closing

    The secret to closing fast with Guillaume is

  • Relationship and trust can be vital with them, sometimes more than anything else.
  • Will you ever get a clear answer from Guillaume

  • They are unlikely to say no directly, you have to make that decision yourself.

Insights For Deal Planning

    How fast (or slow) will Guillaume move?

  • They are not the fastest decision makers, their friendly approach can give false positive signals.
  • Can Guillaume take some risk or not?

  • They can take certain risks that are unlikely to have personal consequences.

You And Guillaume

Personality Compatibility


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