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ML Knowledge
2 years ago
Can you explain the concept of a minimum height tree and how to construct it?
Data Scientist

Meta

Nubank

Hitachi

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2 years ago
Behavioral
2 years ago
Tell me about a conflict that you had to manage.
Data ScientistTechnical Program ManagerSoftware EngineerProduct Manager

Meta

Jabil Circuit

Zola

+3

I’m my current role, during a core-team meeting I noticed conflicts between 2 team members, the MM and the EE. They were debating about why to include one component in the official BOM and discarding another one.

To understand their perspectives, I spoke with them separately in a friendly environment. The MM was frustrated because the EE didn’t provide any data or argument to discard the component that the MM suggested. This component had the same performance, was pin to pin compatible, and cheaper. On the other hand the EE explained he had bad experiences in the past with the component suggested by the MM and he refused to validate and qualify it to do not waste his time.

So… After being clear about the situation, I brought them together for a discussion and I emphasize to focus on the issue, not in personal discrepancies. Do, during the meeting, I encouraged both to consider the Project requirements, customers need and I worked with them brainstorming session.

Then, they agreed to meet with other stakeholders to get their inputs about these 2 components, they commit on a validation plan including both components. The one suggested by the EE as POR and the one suggested by the MM as alternate. They also agree to allocate 60% of the mass production volume to the EE component and 40% to the component suggested by the MM.

From my side, to ensure progress, I scheduled follow-up meetings with them to monitor their collaboration and for sure, I offered my support. Finally, both components are currently part of the product official BOM and these 2 guys improved their working relationship and communication.

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2 years ago
ML Knowledge
2 years ago
What do you believe to be the value of using the ROC curve in machine learning?
Data Scientist

Meta

Bosch Logo

Bosch

Slack Logo

Slack

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2 years ago
Statistics
2 years ago
What steps would you take to produce 1000 normally distributed data points with mean=x and variance=y, and how would you visualize and summarize this data?
Data Scientist

Meta

WeWork Logo

WeWork

Bolt Logo

Bolt

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2 years ago
Behavioral
2 years ago
Where do you see your greatest accomplishment? Why?
Data ScientistProgram ManagerFrontend EngineerFull Stack Software Engineer

Meta

Cognizant Logo

Cognizant

Babylon Health Logo

Babylon Health

+5

During my career I manage a large number of projects, but one of the most challenging ones was the development and launch of a Telematic Control Unit for an important car maker in Japan. The project is important to me due to technical challenges we faced, the skills I applied and the impact on the company.

As Program manager my role was to lead a cross-functional team including Design Engineers, SW Engineers, Operations teams, Material procurement teams, quality and logistics, among others to successfully launch the product to mass production.

First, I kicked-off the project. For that, I shared with the team the project scope, the goals to achieve, I shared the project plan with key milestones and defined the roles and responsibilities for the different team members.

During execution, to maintain a clear communication, I set up design review sessions with the entire engineering organization to ensure everyone was aligned and fixing potential issues in advance. Besides, I led a weekly core-team meeting where we assigned tasks to team members, and setting clear deadlines for each task. To make these tasks easier to manage, I made sure tasks were broken down into manageable sizes with clear descriptions and acceptance criteria. This helped the team to stay focus on their deliveries and maintain speed.

Another important part was to manages Risks. I worked with the team to identify and classify possible risk that might impact to the project deliverables. We defined a Risk matrix to monitor during the development process, and also a project board with the main KPIs to achieve during each stage of the project.

To ensure quality, we defined different testing processes focused on the design, and the process. We installed specific quality check for the documents and devices delivered for each of the milestones of the PDP, as well as a clear quality control in mass production.

Finally, for transparency, I reported on monthly basis to our company leaders and customer about the project status, focusing on Timing, cost, quality and scope.

By employing these strategies, we successfully launched our module on time matching with all the requirements defined by our customer. This was a great example of teamworking, and taught me the importance of breaking down large projects into smaller and easy to manage pieces. Transparent and clear communication was also a great lesson learned. This approach helped me to improve in leading teams through complex problems.

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2 years ago
Statistics
2 years ago
What's your approach when it comes to picking the most effective statistical test for a problem?
Data Scientist

Meta

Envoy Logo

Envoy

SeatGeek Logo

SeatGeek

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2 years ago
SQL
2 years ago
Suppose there is a table named messages with columns id, sender_id, receiver_id, and message. What is the approach you would take to determine the set of distinct communicators?
Data Scientist

Meta

Yandex Logo

Yandex

Deloitte Logo

Deloitte

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2 years ago
ML Knowledge
2 years ago
What is the fundamental difference between the k-means clustering approach and k-nearest neighbors?
Data Scientist

Meta

Mozilla Logo

Mozilla

Palantir Technologies Logo

Palantir Technologies

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2 years ago
Behavioral
2 years ago
Can you share a time when you were forced to change your working style.
Data ScientistData Science ManagerML Engineering ManagerData Engineering Manager

Meta

Hulu Logo

Hulu

Asana Logo

Asana

+6

l, I initially built automation scripts for trade reconciliations and reporting using standalone Python and UNIX-based cron jobs. These worked well for smaller data volumes, but as our operations scaled across global teams in London, Hong Kong, and the Bahamas, performance and maintainability became a bottleneck.

I realized I needed to adapt my workflow to better support large-scale, distributed processes. So, I changed how I worked by migrating critical pipelines from PostgreSQL and flat scripts into a more robust ETL framework using Databricks and Delta Lake. I restructured batch processes into streaming jobs and modularized the Python code to be production-grade. I also started using Kafka and Kubernetes to improve system reliability and orchestration.

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2 years ago
ML Knowledge
2 years ago
What are some practical considerations you take into account when selecting between Lasso and Ridge regression models?
Data Scientist

Meta

Riot Games Logo

Riot Games

Swiggy Logo

Swiggy

Get answer reviewed by AI
2 years ago

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