A number of my mid-sized European clients recently have asked me to help them scope and recruit for the role of Chief Data Scientist (also scoped as ‘Head of Data Science’, ‘Lead Data Scientist’, ‘Head of Analytics’, etc.).
This lead data science role is typically opened by the client company for one of two reasons:
It’s often the case that the company preferred to recruit me personally for a permanent role, but we negotiate instead a consulting engagement where my company fills the lead role, plus several additional roles, on an interim basis. At the same time, we help them to find and hire permanent placements. In the end, it’s a great deal for the company, as we can give them the time and solid guidance they need to find the right long-term fit, in the mean-time getting their program up and running right away.
Over the past 20 years working in financial and business analytics, I’ve probably conducted several hundred interviews for analytic roles (after screening many, many more C.V.s). The candidates with whom I’ve spoken have come from all over the world, many having completed world-class technical graduate programs or MBAs from schools such as Wharton, Chicago Booth or Oxford. It’s been a real privilege to find and hire many excellent people over the years.
Filling a Chief Data Scientist role, however, is particularly challenging because of the complex requirements which the successful candidate must satisfy:
Possession of three unrelated skill sets
The Chief Data Scientist role requires a unique blend of technical, business and communication skills; skills which often correlate negatively with one other. That is to say, individuals who excel in technical areas often have proportionately less interest in mastering the art of communication with non-technical business colleagues. They often do not want to confine their efforts to tasks with demonstrable business value. The successful Chief Data Scientist, however, will not succeed unless he or she possesses both strong communication skills and strong business acumen.
Breadth and depth of technical skills
From an analytic perspective, the role requires both familiarity with a broad range of tools and techniques and also an experience-based understanding of what is involved with in-depth technical implementations. There is certainly space in an organization for specialists in areas such as statistics, deep learning, NLP, or integer programming, but for the lead role, the right candidate must have an overview of the entire analytic tool chest, so that he or she can choose analytic techniques that best address the business problems at hand.
Even more, the candidate must be familiar with analytic tooling, including data base technologies (e.g. SQL, no-SQL, graph databases), programming frameworks (e.g. Spark, MapReduce), development languages (python, R, Matlab, Java), and prototyping tools (Rapidminer, Enterprise Miner, Knime). The technology space is already quite broad and is developing very rapidly. Properly leveraging existing technologies can easily save months or years of in-house development.
Ability to deliver results
I love Joel Spolsky’s guerilla guide to interviewing. At the risk of oversimplifying, Joel looks for only two things in a candidate: 1) intelligence 2) the ability to get things done. In the case of a Chief Data Scientist, initiatives will almost certainly not ‘get done’ if the leader is not able to
I’ve spoken to quite a number of smart candidates with great backgrounds but who didn’t have the track-record to convince me that they would deliver amazing results in a business environment. When looking to fill a lead role, I always need to pass on these candidates.
Three phases of the hiring process
There are three main phases through which I typically progress alongside the company seeking to recruit for this role.
I also work with both recruitment and with the hiring executive to develop a salary indication. It’s important to think about salary early, as many companies do not realize the high premium that this role commands in the job market these days. A company will lose qualified candidates if it takes too long to bring its salary expectations up to a market-conforming level.
I find it helpful to continue working very closely with the recruiter and the hiring executive throughout the hiring process.
For lead data science roles, my experience is that the really strong candidates will be drawn most by the opportunity to work with interesting and abundant data and by the opportunity to contribute to growing an interesting business in creative and meaningful ways. These top candidates are people who love applying complex analytics to large data sets using innovative tooling in order to bring tangible results to real-world business problems.