Meet Our Employees

Learn about the talented people at Gilead who are working to solve some of the world’s biggest healthcare challenges.

Gilead employee Siobhan Daly

Siobhan Daly

Senior Director, Clinical Operations
Clinical Operations
Location: Dublin, Ireland
Joined Gilead: January 2021

Siobhan Daly leads a team of clinical operations professionals that plays a key role in our efforts to adapt Gilead’s innovative therapies to help meet the needs of children. Learn why this work inspires Siobhan and how she approached building out her team at our Global Pediatric Drug Development Centre of Excellence in Dublin, Ireland.

Get to Know Siobhan 

Ashley Innes

Ashley Innes

Regional Director
HIV Community Operations
Location: Dallas, TX
Joined Gilead: May 2016

In her role as Regional Director, HIV Community Operations, Ashley Innes leads a team of community liaisons who help provide education, resources and support to communities impacted by HIV in the Southern United States. Read more to discover how Ashley has been able to broaden her impact on the HIV epidemic while working in an environment where she feels comfortable being her full, authentic self.

Get to Know Ashley 

Daan Koper

Manager, Manufacturing Technical Services (MTS)
Technical Operations, Kite
Location: Hoofddorp, Netherlands
Joined Gilead: July 2019

In his role at our manufacturing facility in the Netherlands, Daan Koper leads a team of process engineers working to support the production of our cell therapies and help Kite, a Gilead Company, expand its capacity to provide cancer treatments to eligible patients across Europe and beyond. Learn how joining Kite enabled Daan to grow professionally.

Get to Know Daan 

Jessica Jirash Gebara

Jessica Jirash Gebara

General Manager, Gilead Mexico
Location: Mexico City, Mexico
Joined Gilead: February 2022

As the General Manager of our Mexico affiliate, Jessica Jirash Gebara is responsible for driving the company’s strategy in the country, engaging employees and helping increase access to Gilead’s medicines. Read about her perspective as a woman leader with two decades of industry experience and learn what inspired her to help expand our presence in Mexico.

Get to Know Jessica 

Tuba Zengin

Tuba Zengin

Global Medical Affairs – HIV
Location: Stockley Park, UK
Joined Gilead: February 2013

As a physician who began her Gilead career at our Turkey affiliate, Tuba Zengin brings several important perspectives to her current role on our Global Medical Affairs team in the UK. Learn how Tuba’s experience at Gilead has enabled her to continue working in her passion and expand her impact on HIV.

Get to Know Tuba