Customer Service Specialist
CurrentCustomer service representative. National distributor and direct client attention
Feb 2023 - Present
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David Hernandez Sierra Email & Phone Number
Customer Service Specialist
at
Chevron
LinkedIn matched
✓ Verified July 2026
3 data sources
Profile completeness 100%
Current company
Role
Customer Service Specialist
Location
Mexico City Metropolitan Area, Mexico
Company size
Who is David Hernandez Sierra? Overview
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Quick answer
David Hernandez Sierra is listed as Customer Service Specialist at Chevron, a with 66351 employees, based in Mexico City Metropolitan Area, Mexico. AeroLeads shows a matched LinkedIn profile for David Hernandez Sierra.
David Hernandez Sierra previously worked as Troubleshooter Specialist at Latchel and Subject Matter Expert at Sykes. David Hernandez Sierra holds Diploma Applied Statistics To Process, Statistics from Universidad Nacional Autónoma De México.
Company email context
Email format at Chevron
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Chevron
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Profile bio
About David Hernandez Sierra
Chemical Engineer background. Customer Service and Supply Chain in Food and Beverage Industry as well as Digital Services. Focused on problem resolution, complaints, and resource planning. Supports teamwork decisions with statistics tools, process mapping, and analysis.
Listed skills include Microsoft Excel, Microsoft Powerpoint, Microsoft Office, Microsoft Word, and 3 others.
Current workplace
David Hernandez Sierra's current company
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Chevron
7 roles
David Hernandez Sierra work experience
A career timeline built from the work history available for this profile.
Troubleshooter Specialist
• Assessment, de-escalation, and immediate coordination for emergency maintenance requests related to properties across the US real estate market. Service providers and property managers have active communication to contribute to the proper resolution.• Daily interaction for an average of +40 emergency maintenance requests with KPI’s for Customer satisfaction (average 4.4/5 rate), time handled (<15 mins first contact), and quality process compliance.
Mar 2021 - Dec 2022
Subject Matter Expert
• Real-time support role for team representatives/customer relations to accomplish the resolution of escalated or specific issues. Provided technical and non-technical training to ensure the capability of representative resolution skills.• Over 10 trained waves of new agents in less than 6 months.
Sep 2020 - Feb 2021
Bilingual Customer Service Representative
• Provided individual attention to the US wireless telecom market account users. Issue resolution, credit handling, account changes and orders for equipment, device, and services. Tech support with remote tools focused on connectivity and device functions. • KPI's for adding value (average +$10/account), customer satisfaction (>95%), and quality process compliance.
Apr 2020 - Sep 2020
Collaborator
Presto (Small Catering Service)
Jun 2019 - Feb 2020
Coordinator Customer Facing (Servicio Al Cliente)
• Mainly focused on Case Fill Rate (CFR)>95% for National Retail clients. Management for 250+ SKUs on a $500 million MXN monthly average delivered product (1000+ purchase orders) on SAP.• Project executed for the delivery time reduction, a decrease of the missing product on delivered palled, shelf, and inventory, increasing CFR to 97-98.5%.
Mar 2016 - Aug 2017
Trainee Sbt
• Self-developed and operating project to reduce 30% of storage space from raw & package material warehouse, saving up 10% of the storage budget.• Mapping full process on delivery and collection on small business for Continuous Improvement area on the Distribution Center.
Oct 2014 - Mar 2016
Team & coworkers
Colleagues at Chevron
Other employees you can reach at chevron.com. View company contacts for 66351 employees →
MR
Mr Robert Pritchett
Colleague at ChevronHouston, Texas, United States
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NA
Noel Alvin Tacuboy
Colleague at ChevronMetro Manila, National Capital Region, Philippines
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ЛК
Любовь Калашникова
Colleague at ChevronMinsk, Belarus
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AL
Alexander Leo
Colleague at ChevronUnited States
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CA
Chad Arnoldus
Colleague at ChevronBakersfield, California, United States
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CV
Catalina Villanueva
Colleague at ChevronSealy, Texas, United States
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BM
Brittany Murray
Colleague at ChevronSpring, Texas, United States
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JS
John Sharma
Colleague at ChevronHouston, Texas, United States
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MT
Muhammad Tukur
Colleague at ChevronIkeja, Lagos State, Nigeria
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AI
Assel Ismagulova
Colleague at ChevronAstana, Kazakhstan
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Mr Robert Pritchett
Colleague at ChevronHouston, Texas, United States
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NA
Noel Alvin Tacuboy
Colleague at ChevronMetro Manila, National Capital Region, Philippines
View →
ЛК
Любовь Калашникова
Colleague at ChevronMinsk, Belarus
View →
AL
Alexander Leo
Colleague at ChevronUnited States
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CA
Chad Arnoldus
Colleague at ChevronBakersfield, California, United States
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CV
Catalina Villanueva
Colleague at ChevronSealy, Texas, United States
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BM
Brittany Murray
Colleague at ChevronSpring, Texas, United States
View →
JS
John Sharma
Colleague at ChevronHouston, Texas, United States
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MT
Muhammad Tukur
Colleague at ChevronIkeja, Lagos State, Nigeria
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AI
Assel Ismagulova
Colleague at ChevronAstana, Kazakhstan
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2 education records
David Hernandez Sierra education
Diploma Applied Statistics To Process, Statistics
Chemical Engineering Bachelor Degree, Chemical Engineering, Chemical Engineer
FAQ
Frequently asked questions about David Hernandez Sierra
Quick answers generated from the profile data available on this page.
What company does David Hernandez Sierra work for?
David Hernandez Sierra works for Chevron.
What is David Hernandez Sierra's role at Chevron?
David Hernandez Sierra is listed as Customer Service Specialist at Chevron.
Where is David Hernandez Sierra based?
David Hernandez Sierra is based in Mexico City Metropolitan Area, Mexico while working with Chevron.
What companies has David Hernandez Sierra worked for?
David Hernandez Sierra has worked for Chevron, Latchel, Sykes, Presto (Small Catering Service), and Nestlé.
Who are David Hernandez Sierra's colleagues at Chevron?
David Hernandez Sierra's colleagues at Chevron include Mr Robert Pritchett, Noel Alvin Tacuboy, Любовь Калашникова, Alexander Leo, and Chad Arnoldus.
How can I contact David Hernandez Sierra?
You can use AeroLeads to view verified contact signals for David Hernandez Sierra at Chevron, including work email, phone, and LinkedIn data when available.
What schools did David Hernandez Sierra attend?
David Hernandez Sierra holds Diploma Applied Statistics To Process, Statistics from Universidad Nacional Autónoma De México.
What skills is David Hernandez Sierra known for?
David Hernandez Sierra is listed with skills including Microsoft Excel, Microsoft Powerpoint, Microsoft Office, Microsoft Word, Industria Alimentaria, Liderazgo De Equipos, and English.
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