Derek Britton

Head of Marketing

Derek has over 3 decades’ experience in enterprise technology, over half of that in senior technology marketing leadership positions. Derek is a seasoned industry commentator, advisor, and writer.

Bronwyn Davies

Head of Development

Bronwyn has more than 15 years’ experience in software delivery across many different roles, technologies and industries. She leads the dev team, driving modern ways of working and productivity as we innovate the PopUp.

Arun Mandapati

Linux Engineering Lead

Arun’s wide-ranging engineering experience includes cloud, containers, DevOps, networks, security, development and more. He is an OpenSource enthusiast and an active contributor in OpenSource developer communities. Arun’s vision helps shape and tune PopUp’s Linux layer.

Saurabh Banerjee

Product Manager

Saurabh’s vision of frictionless mainframe development in the modern business landscape unlocks mainframe agility by overcoming user pain points around limited dev/test environments and beyond. He drives PopUp’s user-centric ethos forward by enabling instant z/OS provisioning and seamless DevOps integration, aligning with our vision: a future where businesses leverage modern practices for their critical z/OS systems.

Stuart Ashby

Practice Head

Stuart leads our team delivering client projects, supporting our customers to achieve their ambitious mainframe modernisation goals. He has held various roles on the mainframe over the last 40 years, and has spent the last ten years focusing on mainframe-inclusive DevOps and improving the mainframer developer experience.

Hariharan Nadarajan

PopUp Mainframe Engineer

Hariharan is a junior PopUp Mainframe Engineer. He specializes in Linux and is a certified Delphix Masking and Virtualization Engineer. He is a member of our strong delivery team and a vital contributor for all our customer deliveries.

Hear from Hari in this video.

Barath Mohan

PopUp Mainframe Engineer

Barath is a junior PopUp Mainframe Engineer and a keen learner of Linux. He is a certified Delphix Masking and Virtualization Engineer. He is a key member of our delivery team for our customer projects.

Hear from Barath in this video.

Saikiran Ganta

PopUp Mainframe Engineer

Saikiran is a junior PopUp Mainframe Engineer with mainframe experience in JCL, COBOL, VSAM and DB2. He is also a certified Delphix Masking and Virtualization Engineer.

Hear from Sai in this video.

Muthiah Maruthappan

Mainframe Technical Lead

Muthiah is a Mainframe Lead with extensive experience in application development, technical project management and mainframe DevOps. He is expert at integrating PopUp with other software including PopUp Virtualisation with Delphix.

Hear from Muthiah in this video.

Karthick Chandrasekaran

Mainframe Technical Lead

Karthick is Mainframe Tech Lead at PopUp. He has 15+ years’ mainframe experience including COBOL, DB2, JCL, VSAM, CICS, and mainframe DevOps and was instrumental in building PopUp in the early days.

Hear from Karthick in this video.

Prakash Shanmugasundaram

PopUp Mainframe Engineer

Prakash is a PopUp Mainframe Engineer, specialising in mainframe application development. He is a certified Delphix Masking and Virtualization Engineer and a vital contributor for all our customer deliveries.

Hear from Prakash in this video.

Shirisha Dodla

PopUp Mainframe Engineer

Shirisha is a Mainframe Engineer, specialising in Linux, and a certified Delphix Masking and Virtualization Engineer. She considers herself a ‘forever student’, eager to learn more about mainframe and is a crucial member of our delivery team.

Hear from Shirisha in this video.

Stephen Morgan

PopUp Mainframe Tech Lead

Stephen is a PopUp Mainframe Tech Lead, with strong skills in IMS (DB & TP) systems and MQ. He also has experience in middleware, distributed systems (Unix), and cloud technologies. He is passionate about applying DevOps practices to modernize ways of working on the mainframe.

Lavanya Anbalagan

PMO

Lavanya is PopUp PMO, specialising in project tracking, status report preparation, effort planning, and dashboarding. She works with the delivery team to ensure status reports, billing and invoicing are on track and keeps an efficient front of business.

Chris Purchase

Data Lead

Chris has vast experience in mainframe application development, test management, project management, environment management and utility development/automation. His data privacy skills and experience provide mainframe data compliance solutions for clients.

Gajalakshmi Sundararajan

Delivery Lead

Lakshmi brings a wealth of experience in project delivery and team building across a range of platforms and technologies, with special expertise in mainframe. Lakshmi plays a pivotal role in delivering projects and ensuring excellent client experience.

Gary Thornhill

Founder & Head of Commercial

Gary uses his strong leadership skills and technical mainframe experience to understand each client’s mainframe challenges and works closely with them to define how PopUp can address their delivery bottlenecks while bringing huge savings.

Stuart Feasey

Popup Mainframe Presales Engineer

Stuart enjoys finding solutions to complex problems. His strong sense of responsibility and attention to detail enable Stuart to establish and maintain strong, productive relationships. Stuart has performed various roles in enterprise software delivery and DevOps tooling deployment.

John Edwards

Mainframe Lead

John is a mainframe architect with extensive experience in application development, system admin, configuration analysis and testing across many Tier 1 financial organisations. His deep technical knowledge helps solve client’s most complex problems and advances the PopUp strategy.

Gomathi Bose

Mainframe Technical Lead

Gomathi has extensive knowledge in mainframe application development. Her willingness to learn, acceptance of challenging environments and confidence in delivering results helps to provide the best solutions to clients.