Rex Lester


Scrum Master

Location: London



Certified ScrumMaster


Rex Lester commented on the article, "Resume for Agile Professionals"

Rex Lester rated the article, "What Do I Do if the Big Boss Doesn't Like Scrum?"

Rex Lester commented on the article, "A Key Attribute to Scrum Project Planning: Determining Scrum Team Velocity"


ScrumMaster (CSM), technical analyst & change manager with a successful record of supporting organisations in the transition to working with and leveraging the full benefits of Scrum. My previous engagements have been with IMG Media where he supported the definition and implementation of agile working and Centrica plc where I worked within the Digital organisation supporting the transition to Scrum. My Recent work includes the technical analysis and delivery of the new iPhone & Android apps for British Gas with subsequent support of the Scrum team maintaining the development of these products using Scrum.

Work experience

Centrica plc, Scrum Master
December 2010 - Present, Windsor, Berkshire, United Kingdom
Analysis and management of the BG iPhone and Android development teams delivering improvements to the quality of the BG iPhone app taking it from 2 to 4.5 star rating Development and launch of the BG Android app achieving 4 stars at launch. Analysis and delivery of the new BG iPhone and Android apps employing an extensible solution facilitating the parallel integration of multiple products areas onto a single platform.

Articles I've written

Evolution or Revolution — Implementing Scrum Is Tough!
Please don't excommunicate me! This article may seem a little Machiavellian, because it is. There's a lot of soft stuff talked about business change. Anyone who's implementing Scrum in a Waterfall-centric organization will understand that the rea...

Transitioning to Agile
Introduction I recently completed a long assignment implementing Scrum and decided that, in the spirit of continuous development and learning, it would be useful to run a personal retrospective while between jobs. This paper articulates some of ...

The Agile-o-Meter
I sometimes ask people where they feel their organization is on the path to Scrum or becoming Agile. The replies are always interesting and tell me more about the type of organization they work in and how it views itself than it does about how Agile they may be.