Main image of article Data Architect Interview Questions: Do Your Research Beforehand

As the job title implies, data architects are responsible for designing, deploying, and maintaining an organization’s data architecture. As they do so, they must stay aware of how different teams will store, upload, and consume that data stored within the framework.

According to Lightcast (formerly Emsi Burning Glass), which collects and analyzes millions of job postings from across the country, data architect jobs are in demand, with the role projected to grow 9.3 percent over the next decade (although one of the experts we interviewed seems to disagree with that idea; see below). The average time to fill an open position is 41 days, indicating a lot of hungry employers having difficulties finding available data architects.

It’s also a pretty lucrative position, with Lightcast plugging the median data architect salary at $115,379. In order to land that sort of paycheck, though, you’ll need the right combination of skills, including SQLdata warehousing, and data management. You’ll also need to succeed in the job interview—which can prove complicated.

What kinds of questions are data architects asked in interviews?

As with job interviews for other tech professional roles, data architects will inevitably face questions about their previous experience, current skills (especially programming languages, data visualization suites, and other data-centric tools), and approach to issues such as data architecture and data warehousing.

For example, you might be asked:

  • How did you improve the data architecture at your last company?
  • How would you build a company’s data architecture from scratch?
  • How do you ensure data security, especially when it comes to integrating internal and outside data?
  • Walk us through how you’ve successfully integrated datasets from external sources.
  • Tell us about your experiences working with R, Python, and SQL.
  • What’s your preferred tool for data visualizations and why?
  • Tell us about your approach to data modeling.
  • What challenges have you encountered in real-time data processing, and how did you solve them?
  • How well do you work with teams? What’s your style when it comes to teamwork and leadership?
  • Tell us about your experience with database migration.

If these kinds of questions stump you initially, don’t worry: there are plenty of resources online that will provide sample answers (for example, Indeed has a pretty good sample Q&A). However, the answers with these resources won’t necessarily align cleanly with your experience; before heading into any interview, make sure to review your professional accomplishments, and craft them into narratives that you can deploy during the interview at key moments.

For example, you should always come prepared with stories that show off your “soft skills” such as empathy and communication, especially if you’ve used those in a team context to solve considerable data-architecture challenges. Since every data architect inevitably deals with building and maintaining data architecture, as well as data migration, you should come prepared with stories that focus on those aspects of the job, too.

What are some of the challenges faced by data architects today? 

You’ll likely face some questions during the interview about the data architecture industry as a whole. Interviewers will want to know that you’re aware of the larger issues facing the data architect community, and that you have a plan for dealing with them.

Dice spoke with Anne Marie Smith, PhD, vice president of education and chief methodologist for EWSolutions, about the challenges faced by data architects today, including why it’s critical to be confident in your communication skills.

Smith noted most organizations are moving away from traditional data architecture, since so many enterprises use commercial off-the-shelf software and don’t feel the need for a custom architecture at the development stage.

As a result, data architects often find themselves assigned data integration tasks, such as how to integrate two or more packages into an organization’s database, how to re-design a database to fit new software, or how to expand requirements in databases that already exist.

“The view of data architecture as a process that starts at the analysis and requirements stage is not nearly as heavily practiced as it was years ago, and they’re losing their positions, which makes it a more competitive field overall, with experienced people competing for fewer jobs,” she explained.

With regard to job interviews, that will ratchet up the pressure to show you have the skills necessary to help with the organization’s data needs.

What are some technical questions interviewees are likely to be asked? 

Smith said this depends heavily on the environment in the interviewing organization; most data architects should be asked detailed questions on conceptual and logical data modeling, conceptual to physical model transformation, the value of physical and conceptual metadata, and what architecture and modeling software they’re most comfortable handling. 

From there, the questions will evolve to focus on the company’s chosen software. For example, a company might have embraced SAP PowerDesigner or Erwin, so questions will focus on those platforms. Do as much research as you can before the interview to figure out the composition of the company’s tech stack—sometimes a corporate website or blog will reveal that information, and sometimes you may need to ask an employee or your interviewer before heading into the interview itself.

“The technical questions around the data modeling software will be different, which means the data architect must be conversant with the software architecture the organization is using,” she said. 

What are the most important skillsets a data architect should have? 

“Quite a few,” Smith explained. “They must be technically competent in data architecture modeling best practices, they must be technically competent in use of chosen data architecture modeling software, and they should have a better than average understanding of the business environment in which they’re working with.” 

They should have business data definition skills, as well as “more than a passing knowledge” of SQL for queries.

“They have to be really detail-oriented, but not only do they have to have that, they have to have the ability to see the big picture, across the whole project, the whole subject matter, or even at the enterprise level—they have to have that balance,” Smith added. 

The last thing they need to have is communication, facilitation and interviewing skills (i.e., the aforementioned “soft skills”), because data architects are always dealing with people, gathering requirements for data models.

“The data architect must be able to speak to two communities, the business and the technical, and if they don’t have those communications skills, they won’t be able to ask the right questions, and translate those requirements into something tangible,” she said. “Many times they are called upon to present their results—I can’t hire a DA who’s terrified of speaking in front of a lot of people.”

How can one best prepare for a data architect interview? 

“Review your experiences. I hope you have a resume, and has enough detail to jog your memory about the tasks you’ve performed,” Smith noted.

She recommends writing out your experience: You want to take the bullet point on your resume and expand it so that you know how to speak to a question such as, “You’ve done a complete enterprise logical data model—how did you do that?” 

It’s also a good idea to practice using the software that the company utilizes, as many second interviews will expect some level of skill determination. “Go back to your Erwin instance and practice with the software, so when the interview asks you how to develop a relationship, you can walk the interviewer through the steps the software would take you through,” she noted.

What questions should the interviewee ask? 

Near the end of virtually all job interviews, recruiters and hiring managers will ask: “Do you have any questions for me?”

The answer to that question should always be “yes,” as that shows your interest in the company and position. The interviewee should ask about the company’s environment, especially concerning data development, data architecture, and what the company’s view is in those areas. For example:

  • Do they have an enterprise data management initiative?
  • What’s the company’s philosophy on data architecture? Is it company-wide, business unit-based?
  • Is it data architecture from conceptual and logical view as well as physical? 
  • Do they write some of their own software, or are they generally commercial off-the-shelf software purchasers who expect data architects to be data integrators?

“Last but not least, ask how the organization views the relationship between business and IT,” Smith said. “If it’s all done in IT with little business involvement, there is little opportunity for the data architect to gather the business requirements to the level needed to substantiate a viable data architecture model.”