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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?

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

Axiom Space Salaries by Position

Axiom Space is building for beyond, guided by the vision of a thriving home in space that benefits every human, everywhere. The leading provider of human spaceflight services and developer of human-rated space infrastructure, Axiom Space operates end-to-end missions to the International Space Station today while developing its successor, Axiom Station a permanent commercial destination in low-Earth orbit that will sustain human growth off the planet and bring untold benefits back home. Axiom Space fosters a diverse environment inclusive of all perspectives. We are the pioneers of commercial space, leading the transformation of low-Earth orbit into a global space marketplace. Our mission-driven team is seeking a bold and dynamic **Simulation Software Engineer** who is fueled by problem-solving, continuously curious, and driven to understand our world, science/technology, and life itself, for the benefit of all on Earth and beyond. **DUTIES & RESPONSIBILITIES** + Develop quality assurance processes and procedures relative to the design, qualification, manufacture, inspection, test, and acceptance of products to ensure products adhere to defined requirements and standards + Maintain training program for the Axiom organizations in the aspects of Quality and the Quality Management System (QMS) + Maintain Quality Management System (QMS) for compliance to AS 9100 and CMMI (Capability Maturity Model Integration) + Support Review Board process for non-conforming materials and products, as necessary + Support various working groups and panels specializing in anomaly/Nonconformance resolution ensuring the Corrective/Preventative Action Plan (CAP) implementation + Support internal audits, submit findings, recommend Corrective Action Requests (CARs), and ensure timely completion of audits + Conduct product and process assessments/audits for compliance that support continuous improvements + Support the organization in achieving and maintaining a CMMI level certification in software development + Develop quality reports/presentations and perform other Safety and Mission Assurance (S&MA) tasks as necessary + Maintain and improve quality processes and procedures + Implement and ensure adherence to the nonconformance process that ensures nonconformances are investigated, trends are tracked, and issues resolved + Review and analyze drawings/models, specifications, standards and conformance criteria for product adherence + Develop reports/status/presentations to S&MA and program leadership in alignment with our quality management system to support the objectives and goals + Perform other duties as assigned **QUALIFICATIONS:** To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. The requirements listed below are representative of the knowledge, skill, and/or ability required. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions. This work involves the software development and support of core simulation infrastructure whereby the individual will: + Develop GUI tools + Develop high-fidelity simulation math models using the NASAs Trick Simulation Environment and NASAs GUNNS software package + Integrate software models for multiple real time simulation environments + Provide user support and guidance for simulation model development and integration + Debug, test, and verification work of simulation math models and integrated simulations + Be able to manage multiple priorities with little supervision + Possess strong software skills and across multiple languages + Be self-motivated, capable person with strong verbal and written communication skills + Possess a positive team-player attitude, be flexible and willing to take on new assignments and responsibilities as they arise + Be open to new challenges in a dynamic environment + Possess strong technical expertise combined with strong verbal and written communication skills + Manage multiple priorities with little supervision + Be highly responsible, and team-oriented with strong communication skills and work ethic + Develop interface software for Hardware-In-The-Loop test rig environments + Develop HLA software for joint NASA Flight Operations Directorate mission operations Bonus Qualifications + Experience developing simulations with High Level Architecture (HLA), TrickHLA, or other distributed simulation methods. + Experience developing GUI applications. + Experience developing simulations using NASAs General-Use Nodal Network Solver (GUNNS) or equivalent tools. + Experience developing simulations using NASAs Trick Simulation Framework or equivalent tools. + Experience using NASAs Core Flight Software (CFS) or equivalent frameworks. + Experience integrating Flight Software in real time simulation environments. + Experience developing interface software for Hardware-In-The-Loop (HIL) test rig environments. + Experience with Continuous Integration/ Continuous Deployment (CI/CD) software development process. **Education & Experience** + Bachelors degree in aerospace, mechanical, electrical/computer, software engineering, computer science, mathematics, physics, or related disciplines required + Experience with C/C++ language and Python scripting + Experience with Object-Oriented-Programming (OOP) + Experience with Unix/Linux Operating System + Experience with developing spacecraft simulation models, math model development, and real time software applications **Requirements** + Must be able to complete a U.S. government background investigation. + Management has the prerogative to select at any level for which the position is advertised. + Proof of U.S. Citizenship or US Permanent Residency is a requirement for this position. **Physical Requirements** + Work may involve sitting or standing for extended periods (90% of the time). May require lifting and carrying up to 25 lbs. (5% of the time). + Equipment and Machines + Standard office equipment (PC, telephone, printer, etc.). **Skills** + Excellent interpersonal skill + Excellent communication skill, verbal and written + Excellent organizational skills + Result oriented personality with a creative approach to problem solving + Ability to work in a team environment + Self-motivated **Competencies** : To perform the job successfully, an individual should demonstrate the following competencies: + Ethics - Treats people with respect; keeps commitments; inspires the trust of others; works with integrity and principles; upholds organizational values + Problem Solving - Identifies and resolves problems in a timely manner; gathers and analyzes information skillfully; develops alternative solutions; works well in group problem solving situations; uses reason even when dealing with emotional topics + Organizational Support - Follows policies and procedures; completes administrative tasks correctly and on time; supports organization's goals and values; benefits organization through outside activities; supports affirmative action and respects diversity + Communications - Expresses ideas and thoughts verbally; expresses ideas and thoughts in written form; exhibits good listening and comprehension; keeps others adequately informed; selects and uses appropriate communication methods + Cost Consciousness - Works within approved budget; develops and implements cost saving measures; contributes to profits and revenue; conserves organizational resources + Teamwork - Eager and able to work in a collaborative and cross-disciplinary fashion in a fast-paced, dynamic, and deadline-oriented environment _Axiom Space is proud to be an equal opportunity employer. Axiom Space does not discriminate on the basis of race, regional color, national origin, gender (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with disability, or other applicable legally protected characteristics._ Department EVA PWR-Avionics & Ctrls Employment Type Full-Time Minimum Experience Mid-level

Axiom Space Interview Questions

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Axiom Space Interview Questions

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