By Saeed Mirshekari

Jul 8, 2023


Welcome to our comprehensive guide on the hiring process for data scientists in big tech companies! If you're aspiring to join the ranks of data scientists and curious about how these large organizations find and select candidates, you're in the right place. In this blog post, we'll break down the hiring process into simple steps and provide insights specific to data scientist roles. Let's dive in!

1. Job Posting

Big tech companies like Google, Microsoft, and Amazon create detailed job postings for data scientist positions. These postings highlight the responsibilities, qualifications, and desired skills specific to data science. For example, Google's data scientist job postings often emphasize experience in statistical modeling, machine learning, and programming languages such as Python or R.

2. Candidate Sourcing

To find top-tier data science talent, big tech companies employ various methods. They actively search for candidates on professional networking platforms like LinkedIn and engage in data science-specific forums and communities. Additionally, these companies often host or participate in data science conferences and events to connect with potential candidates. For instance, Microsoft actively recruits data scientists from conferences like the International Conference on Machine Learning (ICML).

3. Resume Screening

During the resume screening stage, big tech companies use applicant tracking systems (ATS) to handle the large volume of applications. These systems scan resumes for keywords related to data science, such as machine learning, statistical analysis, data visualization, and domain-specific knowledge. For example, Amazon leverages its ATS to identify data scientist candidates who possess expertise in areas like natural language processing (NLP) or computer vision.

4. Pre-employment Assessments

Data science roles often involve complex technical skills. Big tech companies may use pre-employment assessments to evaluate candidates' proficiency in areas such as programming, statistics, and machine learning algorithms. These assessments can include coding challenges, statistical analysis tasks, or even data science project presentations. For instance, Facebook is known to administer coding assessments to evaluate a candidate's programming skills for data analysis and modeling.

5. Phone/Video Interviews

Phone and video interviews play a vital role in assessing data scientist candidates. These interviews focus on technical expertise, problem-solving abilities, and the candidate's approach to data science challenges. Companies like Google conduct phone interviews that involve technical questions and hypothetical data science scenarios. Microsoft conducts video interviews that assess candidates' ability to apply statistical and machine learning concepts to real-world problems.

6. In-person Interviews

For candidates who excel in the phone or video interviews, big tech companies often invite them for in-person interviews. These interviews typically include multiple rounds, covering various aspects of data science. These can include coding interviews to assess programming skills, statistical interviews to evaluate mathematical and analytical abilities, and behavioral interviews to assess collaboration and communication skills. Amazon is known for conducting behavioral-based interviews to evaluate candidates' ability to solve business-oriented data science problems.

7. Technical Presentations

Some tech companies, like Google and Microsoft, may include technical presentations as part of the interview process for data scientists. Candidates may be asked to present their past data science projects, research work, or solve a data-related problem during the interview. This allows the hiring team to assess a candidate's ability to communicate complex concepts, interpret data, and provide actionable insights.

8. Decision Making and Offer

After evaluating all the interview feedback and assessment results, big tech companies make their final decision. If a data scientist candidate is selected, an offer is extended, which includes details about compensation, benefits, start date, and other relevant terms. These offers often include competitive salary packages, stock options, and opportunities for professional growth and development.


The hiring process for data scientists in big tech companies can be demanding, but understanding each stage of the process can help you prepare effectively
If you like our work, you will love our newsletter..๐Ÿ’š

About O'Fallon Labs

In O'Fallon Labs we help recent graduates and professionals to get started and thrive in their Data Science careers via 1:1 mentoring and more.

Saeed Mirshekari, PhD

Saeed is currently a Director of Data Science in Mastercard and the Founder & Director of O'Fallon Labs LLC. He is a former research scholar at LIGO team (Physics Nobel Prize of 2017). Learn more about Saeed...

Let's Go๐Ÿ’Š I'm Good

leave a comment

Let's Talk

Schedule Your FREE Meeting Now

Looking for a Data Science expert to help you score your first or the next Data Science job? Or, are you a business owner wanting to bring value and scale your business through Data Analysis? Either way, youโ€™re in the right place. Letโ€™s talk about your priorities!