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Reinventing Geospatial, Inc (Rgi) Interview Questions

A/B Testing

Algorithms

Analytics

Machine Learning

Probability

Product Metrics

Python

Statistics

Reinventing Geospatial, Inc (Rgi) Interview Guides

<p>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.</p>

<p>What factors could have biased this result, and what would you look into?</p>


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

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?

<p>You are testing hundreds of hypotheses with many <em>t</em>-tests. What considerations should be made?</p>


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

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?

<p>The schema below is for a retail online shopping company consisting of two tables, <code>attribution</code> and <code>user_sessions</code>.</p>

<ul>
<li><p>The attribution table logs a session visit for each row.</p></li>

<li><p>If <code>conversion</code> is <code>true</code>, then the user converted to buying on that session.</p></li>

<li><p>The <code>channel</code> column represents which advertising platform the user was attributed to for that specific session.</p></li>

<li><p>Lastly the <code>user_sessions</code> table maps many to one session visits back to one user.</p></li>
</ul>

<p>First touch attribution is defined as the channel with which the converted user was associated when they first discovered the website.</p>

<p>Calculate the first touch attribution for each <code>user_id</code> that converted. </p>

<p><strong>Example:</strong></p>

<p><strong>Input:</strong></p>

<p><code>attribution</code> table</p>

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

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

<tr>
<td><code>channel</code></td>
<td>VARCHAR</td>
</tr>

<tr>
<td><code>conversion</code></td>
<td>BOOLEAN</td>
</tr>
</tbody>
</table>
<p><code>user_sessions</code> table</p>

<table>
<thead>
<tr>
<th>column</th>
<th>type</th>
</tr>
</thead>

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

<tr>
<td><code>created_at</code></td>
<td>DATETIME</td>
</tr>

<tr>
<td><code>user_id</code></td>
<td>INTEGER</td>
</tr>
</tbody>
</table>
<p><strong>Example output:</strong></p>

<table>
<thead>
<tr>
<th><code>user_id</code></th>
<th><code>channel</code></th>
</tr>
</thead>

<tbody>
<tr>
<td>123</td>
<td>facebook</td>
</tr>

<tr>
<td>145</td>
<td>google</td>
</tr>

<tr>
<td>153</td>
<td>facebook</td>
</tr>

<tr>
<td>172</td>
<td>organic</td>
</tr>

<tr>
<td>173</td>
<td>email</td>
</tr>
</tbody>
</table>


First Touch Attribution

<h5>Overview </h5><p>Reinventing Geospatial (RGi) is a leading expert in geospatial solutions for Defense, Intelligence, and Federal clients. We enhance situational awareness for soldiers and analysts by integrating software development with geospatial intelligence. Our projects range from data collection to advanced deep learning, leveraging tools like Python, Java, and ArcGIS. </p><p>We don't just fill roles we build teams of high performers and leaders who make an immediate impact. At our core, we're driven by innovation and powered by people who work at the intersection of passion and performance. Here, you'll collaborate with bold thinkers, leverage cutting edge technology, and tackle meaningful challenges from day one. </p><p>Our culture is defined and anchored by three pillars: </p><ul> <li><b>Energy:</b> We bring passion, purpose, and urgency to our work. </li><li><b>Edge:</b> We take initiative, embrace growth, and step outside our comfort zone. </li><li><b>Execution:</b> We get things done smartly, decisively, and with real results. </li></ul> <p>If you're the kind of person who leads with initiative, thrives in a fast-paced environment, and is eager to create real impact, we want you on our team. </p><p><b>Clearance:</b> Active Top Secret clearance with an ability to obtain SCI access and willingness to obtain CI Polygraph </p><p>US Citizenship Required </p><p>*This job posting is for a potential upcoming opening, and we encourage interested candidates to apply for future consideration. </p><h5>As a Full Stack Software Engineer, you will </h5><ul> <li>Develop, deploy, and maintain cloud-based services using AWS Lambda, EC2, and other core AWS services. </li><li>Write and maintain code in C#, Java, JavaScript/TypeScript, Python, and Shell scripting. </li><li>Create, document, and manage new and existing functionality in GitLab repositories. </li><li>Apply DevOps practices and tools to deliver new features within an Agile environment. </li><li>Participate in Agile ceremonies (standups, sprint planning, increment planning) using Jira and Confluence. </li><li>Perform system administration and modify existing GOTS code to integrate open-source software solutions into web applications. </li><li>Design and implement APIs and database integrations that interact with Redux and React frameworks. </li><li>Integrate open-source packages for data visualization and data filtering. </li><li>Ensure code quality by applying unit testing and build testing best practices across all development efforts. </li><li>Collaborate with team members to assess tickets, test functionality, and deliver features that meet User Story Acceptance Criteria. </li></ul> <h5>Qualifications </h5><ul> <li>Requires BS degree and 4+ years of prior relevant experience or Masters with 2+ years of prior relevant experience. </li><li>Must have an active Top Secret to be considered and ability to obtain TS/SCI clearance prior to start and willingness and ability to obtain a Polygraph </li><li>Minimum 3 years of experience with REACT or modern JavaScript framework. </li><li>Minimum 3 years of experience with Python, C# development framework </li><li>At least 3 years of experience with unit testing, continuous integration tools, and Gitlab version control </li><li>Proactive self-starter demonstrates a positive, willing attitude and excellent oral and written communication skills. </li><li>Experience in either software development projects or software integration projects in a service-oriented environment (Cloud, SOA, Web-Services) or virtualization environment. </li><li>Organizational Skills: Can plan and prioritize work. Follows tasks to their logical conclusion and makes sure that everything has been done to the right standard. Good attention to detail. </li><li>Communications: Ability to communicate clearly and efficiently to team members and clients, verbally and in writing. Able to present ideas in a variety of ways depending upon audience and context. </li></ul> <h5>Additional Skills We'd Like to See </h5><ul> <li>AWS Developer Solutions Mindset </li><li>At least 3 years of experience with Linux and/or Windows system administration </li><li>At least 2 years of experience with DoD Aeronautical Datasets </li><li>At least 1 year of experience with AWS cloud formation templates </li><li>At least 1 year of experience with Node, NPM, Swashbuckle, REST API, Sass </li><li>AWS Solutions, Developer, DevOps certification </li><li>Team Collaboration tools (Jira, Confluence) </li><li>DOD 8570 Compliant Certification (Sec+) </li></ul> <p><b>Who we are:</b> </p><p>Reinventing Geospatial, Inc. (RGi) is a fast-paced small business that has the environment and culture of a start-up, with the stability and benefits of a well-established firm. We solve complex problems within geospatial software development and national defense to make an Immediate Impact for our nations soldiers and analysts. </p><p>We pride ourselves on giving employees an exceptional life experience, where creativity thrives, and challenges are simply part of the fun. We provide truly excellent benefits, including: </p><p> 100% paid employee healthcare & dental insurance </p><p> Paid parental leave </p><p> 401k with matching </p><p> Escalating vacation time </p><p> Referral bonuses </p><p> Tuition reimbursement </p><p> Professional development training </p><p> Free beverages and snacks </p><p> Weekly catered lunches and breakfast on Fridays </p><p><b>Grow to be our next leader:</b> </p><p>At RGi, fostering a strong and organic corporate culture is paramount and serves as a compass on the decisions we make and how we operate the company. We believe our culture of camaraderie, innovation, and collaboration reflects the caliber of our employees and their dedication to the mission of providing quality software to our customers. As such, we want our employees to feel empowered to seek growth and leadership opportunities within the company and position us to maintain our culture as we grow. RGi provides opportunities, resources, training, and mentorship to all our employees to let them take control of their careers and become a leader or a crucial member of our company. If this is what you are looking for in a company, then you are what we are looking for in an employee. </p><p>Reinventing Geospatial, Inc. is an Equal Opportunity Employer. Employment decisions are made without regard to race, color, religion, sex, national origin, age, veteran status, disability, or any other protected class. U.S. Citizenship is required for all positions. </p>#J-18808-Ljbffr

Question	Topic	Difficulty	Ask Chance
Boarding Times Bias	Statistics	Medium	Very High
Hundreds of Hypotheses	Statistics	Medium	Very High
First Touch Attribution	SQL	Hard	Very High

Reinventing Geospatial, Inc (Rgi) Interview Questions

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Reinventing Geospatial, Inc (Rgi) Interview Questions

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