Ambuya John: Email & Phone Number

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Chief Sustainian at Greyfos|Nairobi County, Kenya

Position:

Chief Sustainian at Greyfos

Location:

Nairobi County, Kenya

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Last updated: 2026-06-28

Updated: 2026-06-28

Found email addresses for Ambuya John:

Business emails:

j**n@greyfos.co.ke

Personal emails:

g********2@yahoo.com,

g*****s@gmail.com,

a********n@gmail.com

Found phone for Ambuya John:

+254-***-***-4689

A different Ambuya John?

Work Experience 11 years

Chief Sustainian at Greyfos

Jan 2009 - Current

Treeathon 2016 at Greyfos

Dec 2015 - Jul 2018

Go Green Kids Festival at Greyfos

Sep 2015 - Apr 2017

ESIA Expert at ICT Authority

Feb 2025 - Jul 2025

Environmental Specialist at The World Bank Group

Oct 2024 - Jul 2025

Environmental Specialist at Alive and Kicking

Nov 2023 - Nov 2024

ESG Specialist at Kenya Climate Ventures (KCV)

Dec 2023 - Apr 2024

ESIA Consultant at Catholic Relief Services

Jan 2022 - Dec 2023

ESMS Specialist at CLASP

Sep 2021 - Jul 2023

Environmental Safeguards Specialist - Kenya Digital Economy Acceleration Project (KDEAP) at World Bank Group

Nov 2022 - Jun 2023

Ambuya John started working in 2009, then the employee has changed 7 companies and 8 jobs. On average, Ambuya John works for one company for 2 years 10 months.

Ambuya is proficient in English and Swahili. Their professional focus is Analysis, Business Development, and Business Planning across 3 core areas.

Ambuya holds Geographic Information Systems (GIS) Specialization, Chemicals and Waste Management in the Oil and Gas Sector, and Imagery, Automation, and Applications certifications.

Education

Doctor of Philosophy - PhD at UCAM Universidad Cat��lica San Antonio de Murcia

Master of Business Administration (M.B.A.) at Università Cattolica del Sacro Cuore

Bachelor of Environmental Studies at Kenyatta University

KCSE Certificate at Friends High School, Kigama

Frequently Asked Questions

What is Ambuya John's email address?

SignalHire found verified email addresses for Ambuya John, both business and personal. Their business email is j**n@greyfos.co.ke, and personal emails include g********2@yahoo.com, g*****s@gmail.com, and a********n@gmail.com.

What is Ambuya John's phone number?

SignalHire found a verified phone number for Ambuya John: +254-***-***-4689.

How do I contact Ambuya John at Greyfos?

You can reach Ambuya John through SignalHire by unlocking their verified email and direct phone number (free signup, no credit card needed). SignalHire is the fastest route if you need their contact details immediately.

What is Ambuya John's professional background?

Ambuya John has 11 years of professional experience. They have held roles including Treeathon 2016, Go Green Kids Festival, and ESIA Expert at companies such as Greyfos, Greyfos, and ICT Authority. Their education includes Doctor of Philosophy - PhD from UCAM Universidad Cat��lica San Antonio de Murcia, and Master of Business Administration (M.B.A.) from Università Cattolica del Sacro Cuore.

Is Ambuya John's contact information up to date?

Yes. Ambuya John's SignalHire profile was last updated on 28 June 2026, reflecting their current position as Chief Sustainian at Greyfos in Nairobi, Nairobi, Kenya.

Other employees at Greyfos

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Company

Position

Oscar Ogendi

Greyfos

Associate

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