Lasse Koskela

agile product design and development coach

Lasse Koskela works as a coach, trainer, consultant and programmer, spending his days helping clients and colleagues at Reaktor create successful software products. He has trenched in a variety of software projects ranging from enterprise applications to middleware products developed for an equally wide range of domains.

In the recent years, Lasse has spent an increasing amount of time giving training courses — recently as a Certified Scrum Trainer — and mentoring client teams on-site, helping them improve their performance and establish a culture of continuous learning. Aside from consulting leaders and managers, Lasse enjoys programming and works frequently hands-on with software teams.

In his spare time, Lasse hacks on open source projects and writes about software development. In 2007, he published a book on Test Driven Development and his second book, Effective Unit Testing, was just released. He is one of the pioneers of the Finnish agile community and speaks frequently at international conferences.

He can be reached at and irregularly writes about his thoughts on this website.