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Bechtel Corporation Interview Questions

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Let’s say we have a table with an <code>id</code> and <code>name</code> fields. The table holds over 100 million rows and we want to sample a random row in the table without throttling the database.

Write a query to randomly sample a row from this table.

Input:

<code>big_table</code> table

<table>
<thead>
<tr>
<th>Columns</th>
<th>Type</th>
</tr>
</thead>

<tbody>
<tr>
<td><code>id</code></td>
<td>INTEGER</td>
</tr>

<tr>
<td><code>name</code></td>
<td>VARCHAR</td>
</tr>
</tbody>
</table>

Write a query to randomly sample a row from a big table.

Random SQL Sample

Let’s say that your company is running a standard control and variant AB test on a feature to increase conversion rates on the landing page. The PM checks the results and finds a .04 p-value.

How would you assess the validity of the result?

Experiment Validity

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?

Bechtel Corporation Salaries by Position

**Requisition ID: 272651** + **Relocation Authorized: National - Family** + **Telework Type: Full-Time Office/Project** + **Work Location: Reston, VA** Since 1898, we have helped customers complete more than 25,000 projects in 160 countries on all seven continents that have created jobs, grown economies, improved the resiliency of the worlds infrastructure, increased access to energy, resources, and vital services, and made the world a safer, cleaner place. Differentiated by the quality of our people and our relentless drive to deliver the most successful outcomes, we align our capabilities to our customers objectives to create a lasting positive impact. We serve the infrastructure, Nuclear, Security & Environmental; Energy; Mining and Metals; and Manufacturing and Technology markets. Our services span from initial planning and investment, through start-up and operations. Core to Bechtel are our values-ethics, safety, quality, people, culture, relationships, innovation and sustainability, and our covenants-integrity, respect, collaboration, trust, and delivery. They are what we believe, what customers expect, and how we deliver. # Position Summary The growth in renewables and energy wider transition requires flexible generation and long duration energy storage. The Bechtel Heavy Civil Infrastructure business is responding to this global challenge and growing its capability in the development and construction of Hydropower and Pumped Storage projects globally. Bechtel is engaging in several pumped storage development s around the world, including in North America where we are seeking an experienced Project Engineering Manager to lead the technical development and delivery of major projects. In support of our plans to further develop this project, the Project Engineering Manager will participate in all stages of the project lifecycle, including conceptual design, FEED, detailed design, and project execution. The Project Engineering Manager will contribute to technical feasibility studies, value engineering, cost development and strategic planning for the project. Reports to the Project Manager and/or the Functional Manager of Engineering. # Responsibilities + Provides technical insight and value engineering during development of engineering designs. + Coordinates technical scope with Construction and Procurement Functions. + Provides support to Business Development, securing new work and external engagement. + Manages multi-discipline team executing conceptual design, FEED and project execution. + Provides leadership and inspires performance of the project team. # Qualifications and Skills **Basic Qualifications:** + BS/MS Degree in Geotechnical, Civil, Hydraulic, Mechanical or Electrical Engineering with 10+ years of relevant experience. # Additional Qualifications: + Professional Engineering License preferred. + Experience of design development, feasibility studies, detailed design and/or owner's engineering work (technical specifications, tenders evaluations, design review, construction supervision). + Sufficient demonstrable professional experience in the hydropower and pumped storage industry, ideally with an international developer, consultant or contractor. + Demonstrable engineering skills and experience including civil structures, dams, tunnels, generation plant and powerhouse complexes. + Specific areas of technical expertise would be viewed positively: + Large hydropower or pumped storage design and construction. + Experience of dams and large hydraulic structures. + Knowledge of geology and geotechnics. + Tunnelling and underground works experience. + Experience with design and integration of M&E equipment. + Experience with layout and construction planning of major hydropower or pumped storage projects. + Management of multidisciplinary teams, including engineering, procurement, construction. **#LI-JL1** **_Shaping tomorrow together_** **_Bechtel is one of the most respected global engineering, construction, and project management companies. Together with our customers, we deliver landmark projects that foster long-term progress and economic growth. Since 1898, weve completed more than 25,000 extraordinary projects across 160 countries on all seven continents. We operate through four global businesses: Infrastructure; Nuclear, Security & Environmental; Energy; and Mining & Metals. Our company and our culture are built on more than a century of leadership and a relentless adherence to our values, the core of which are safety, quality, ethics, and integrity. These values are what we believe, what we expect, what we deliver, and what we live._** **_www.bechtel.com_** **_Bechtel is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity and expression, age, national origin, disability, citizenship status (except as authorized by law), protected veteran status, genetic information, and any other characteristic protected by federal, state or local law._** **Bechtel employees are required to be vaccinated for COVID-19 or show proof of a negative test result prior to accessing Bechtel sites/facilities to the extent required by applicable law or by customer requirements.**

Bechtel Corporation Interview Questions

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Bechtel Corporation Interview Questions

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