Prepare for and practice interview questions from Data Device Corporation.

Data Device Corporation Interview Questions

A/B Testing

Algorithms

Analytics

Machine Learning

Probability

Product Metrics

Python

Statistics

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Suppose there exists a new airline named Jetco that flies domestically across North America. Jetco recently had a study commissioned that tested the boarding time of every airline, and it came out that Jetco had the fastest average boarding times of any airline.

What factors could have biased this result, and what would you look into?

What could potentially bias the average boarding time in favor of an airline that only flies domestically?

What could potentially bias the average boarding time in favor of an airline that only flies domestically?

Boarding Times Bias

A new airline came out as the fastest average boarding times compared to other airlines.  What factors could have biased this result and what would you look into?

You are testing hundreds of hypotheses with many t-tests. What considerations should be made?

What is a key disadvantage of the F-test when compared to multiple t-tests?

What is a key disadvantage of the F-test when compared to multiple t-tests?

Hundreds of Hypotheses

You are testing hundreds of hypotheses with many t-tests. What considerations should be made?

Let’s say you work for a social media company that has just done a launch in a new city. Looking at weekly metrics, you see a slow decrease in the average number of comments per user from January to March in this city.

The company has been consistently growing new users in the city from January to March.

What are some reasons why the average number of comments per user would be decreasing and what metrics would you look into?

What metric could be used to measure if active users are still engaging on the platform despite an overall decrease in the average number of comments per user?

What metric could be used to measure if active users are still engaging on the platform despite an overall decrease in the average number of comments per user?

Decreasing Comments

How would you investigate a decline in the average number of comments per user?

<h3>Job Description</h3><div>Job Description<div>For more than 60 years, Data Device Corporation (DDC) has been recognized as a world leader in the design and manufacture of high-reliability Connectivity, Power, and Control solutions for the Aerospace, Defense, and Space industries. Our dedication to supplying quality products, on-time delivery, and superior support, has contributed to the success of our customers and the critical missions they serve.This position is 100% onsite at our Bohemia, NY office.The pay range for this position is between $120,000 and $170,000 annually, and we will rely on previous experience.This position requires a U.S Person or a person who can qualify for a Department of State or Department of Commerce License. Position Summary:This individual will play a pivotal role in driving test engineering and process improvements, optimizing designs, and supporting production operations, directing a team of engineers and technicians. This role requires a combination of leadership, technical expertise, and hands-on experience in test and process engineering within a high-reliability electronics manufacturing environment.Key Position Accountabilities: <ul><li>Provides technical leadership to address challenges and introduce new capabilities to DDC’s Manufacturing and Test Engineering.</li><li>Oversees the design and development of test fixtures and software, ensuring the creation of innovative and reliable test systems. </li><li>Lead efforts to research and implement new testing methods, equipment, and techniques to enhance product testing capabilities.</li><li>Supervises, mentors, and develops a cross functional team of engineers and technicians, fostering a culture of continuous learning, growth and high performance.</li><li>Participates in the development of new products and supports the timely fabrication and testing of designs.</li><li>Leads the creation of new processes and procedures, contributing to teams of varied technical disciplines, and ensuring efficient process documentation (SOPs, travelers, etc.).</li><li>Collaborate with design teams to develop innovative approaches that optimize product design trade-offs, including cost, performance, and time to market.</li><li>Provides leadership and oversight to day-to-day Process Engineering support across the company (Engineering, Product Development, Test Engineering, Procurement, Manufacturing, and Product Assurance), focusing on improving processes and resolving production issues.</li><li>Lead failure analysis investigations of in-house and customer-returned products. Collaborate with other engineering teams to make data-driven recommendations that improve product quality and reduce the likelihood of failures.</li><li>Manages the development and execution of project plans, including resource allocation and schedule oversight, ensuring the timely and successful introduction of new processes and test technologies in alignment with company objectives.</li><li>Propose and champion the implementation of new methods, capital equipment, technologies, and processes to enhance product performance and operational efficiency.</li><li>Leads continuous improvement initiatives to improve quality, efficiency, and cost-effectiveness with a focus on Productivity in both Test and Assembly areas.</li></ul>Secondary Duties:<ul><li>Participate in technical meetings with standards organizations, ensuring alignment with DDC’s strategic goals.</li><li>Coordinate testing, perform failure analysis, and support Applications Engineering in resolving product-related issues at customer sites.</li><li>Lead vendor selection for major design projects, considering technical performance, risk, and cost.</li><li>Manage and Identify opportunities for Capital Improvements and Productivity associated.</li></ul>Qualifications:<ul><li>Education: Bachelor’s degree in Electrical Engineering, Mechanical Engineering, or Applied Sciences required; Graduate degree and previous leadership training is desirable.</li><li>Experience: 7+ years of relevant engineering experience, with a focus on test or process engineering and manufacturing support; and 2+ years’ experience as a supervisor, lead engineer or senior engineer.</li><li>Technical Skills:<ul><li>Knowledge of MIL STDs 883, MIL-PRF 38534, 38510, IPC 610 (desirable).</li><li>Proven expertise in designing, optimizing, and implementing test systems, fixtures, and software.</li><li>Strong knowledge of test equipment, failure analysis techniques, and process improvement strategies</li><li>Familiarity with all aspect of Electronics manufacturing including Hybrid and PCB manufacturing.</li></ul></li><li>Leadership Skills: Demonstrated ability to lead teams, mentor engineers, and manage complex engineering projects.</li><li>Communication: Strong written and verbal communication skills, with the ability to present technical information to a wide range of audiences.</li><li>Additional Skills:<ul><li>Knowledge of industry best practices and continuous improvement methodologies.</li><li>Ability to make decisions under pressure and manage competing priorities.</li></ul></li></ul>This job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee. This job description indicates, in general the nature and levels of work, knowledge, skills, abilities and other essential functions (as covered under the ADA) expected of the incumbent. Duties, responsibilities and activities may change at any time with or without notice as required.Data Device Corporation is an Affirmative Action/Equal Opportunity Employer and is committed to providing equal employment opportunity (EEO) for all persons in all facets of employment. All qualified applicants will receive consideration for employment without regard to race, color, religion, age, gender, sexual orientation, gender identity, national origin, citizenship status, marital status, genetic information, disability, protected veteran status or any other legally protected status.</div></div>

Question	Topic	Difficulty	Ask Chance
Boarding Times Bias	Statistics	Medium	Very High
Hundreds of Hypotheses	Statistics	Medium	Very High
Decreasing Comments	Product Metrics	Easy	Very High

Data Device Corporation Interview Questions

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Data Device Corporation Interview Questions

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