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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

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

Solvay Salaries by Position

Syensqo is all about chemistry. We're not just referring to chemical reactions here, but also to the magic that occurs when the brightest minds get to work together. This is where our true strength lies. In you. In your future colleagues and in all your differences. And of course, in your ideas to improve lives while preserving our planet's beauty for the generations to come. We are looking for: <ul> <li> The Syensqo Composite R&I group is seeking a highly motivated senior research scientist to join its Anaheim R&I team. Working within Syensqo Research & Innovation (R&I) GBU, the position offers the opportunity to lead Syensqo into new growth territories with breakthrough innovation to develop the next-generation of materials and process technology. The scientist will work collaboratively with product development teams for the Defense, Aerospace and Automotive industries to ensure alignment with the overall business objectives. Syensqo is a science company whose technologies bring benefits to many aspects of daily life. With more than 24,100 employees in 64 countries, Syensqo bonds people, ideas and elements to reinvent progress. </li> <li>The Group seeks to create sustainable shared value for all, notably through its Syensqo One Planet plan crafted around three pillars: protecting the climate, preserving resources and fostering better life. The Group's innovative solutions contribute to safer, cleaner, and more sustainable products found in homes, food and consumer goods, planes, cars, batteries, smart devices, health care applications, water and air purification systems. Founded in 1863, Syensqo today ranks among the world top three companies for the vast majority of its activities and delivered net sales of €10.2 billion in 2019. Syensqo is listed on Euronext Brussels (SOLB) and Paris and in the United States, where its shares (SOLVY) are traded through a Level I ADR program.</li></ul> We count on you for: <ul> <li>Understand the key business goals and identify strategic opportunities (current/new) that align with the business</li> <li> Lead development projects to support the growth of the composites business with minimal supervision</li> <li>Ability to apply a sound fundamental science approach to research projects</li> <li> Establish technical relationships with internal and external customers by presenting and discussing research results. </li> <li> Design, support, and manage technical (innovation, business) projects in collaboration with market-facing teams globally.</li> <li>Innovate and protect IP</li> <li>Develop new methods to support novel R&I projects, perform validation of test method, maintain data compliance, and train junior team members to deliver/support projects. </li> <li>Balance multiple projects in a quick paced, results oriented environment </li> <li>Support business sustainment</li></ul> You can count on us for: <ul> <li>With reasonable performance candidate is expected to grow into a position of authority on several technical subjects and be recognized as such by our customers. </li></ul> You will bring: <ul> <li>PhD in Organic/Polymer or Materials Sciences </li> <li>5+ years of experience in Composite materials</li> <li>Practical experience with direct involvement in customer facing projects and/or manufacturing projects is an advantage</li> <li>Experience working in cross-functional / cross-cultural team</li> <li>Must be authorized to work in the United States and able to meet U.S. export control requirements</li> <li>Skills</li> <li>Technical knowledge in field of thermoset Composites, Organic/Polymer Chemistry, Materials Science</li> <li>Proven track record with experimental design and execution</li> <li>Familiarity with laboratory practices associated with wet-lab chemistry and formulating is strongly preferred</li> <li>Strong knowledge on HSE in lab parameters </li> <li>Experience in product/process transition from R&D to production and six sigma training are preferred</li> <li>Excellent communication, interpersonal and influencing skills. Ability to sell ideas and negotiate for resources without direct authority</li> <li>Efficient use of digital tools for data sharing globally</li> <li>Technical report writing, data collection/analysis, and attention to details</li></ul> You will get: <ul> <li>Competitive salary and benefits package.</li> <li>The U.S. base salary range reasonably expected to be paid for this position is $119,200 to $149,000 per year Since actual compensation packages are based on a variety of factors unique to each candidate we may ultimately pay more or less than the posted base salary range. Total compensation for this role also includes bonus and/or other incentives.</li> <li>16, or more, weeks of maternity/paternity and co-parenting leave, according to local regulations</li> <li>Training platform for all employees</li> <li>Free language courses (24 languages available)</li> <li>Free well-being sessions (physical and psychological)</li></ul> About us <ul> <li>This position requires a certain level of integrity, confidentiality, loyalty and trustworthiness as you will have access to Syensqo's most sensitive information or systems in the context of your mission. Please note that the selected person for this position will be required to undergo and meet company standards for vetting verifications and reference checks.</li> <li>Syensqo is a science company developing groundbreaking solutions that enhance the way we live, work, travel and play. Inspired by the scientific councils which Ernest Solvay initiated in 1911, we bring great minds together to push the limits of science and innovation for the benefit of our customers, with a diverse, global team of more than 13,000 associates. Our solutions contribute to safer, cleaner, and more sustainable products found in homes, food and consumer goods, planes, cars, batteries, smart devices and health care applications. Our innovation power enables us to deliver on the ambition of a circular economy and explore breakthrough technologies that advance humanity.</li> <li>At Syensqo, we seek to promote unity and not uniformity. We value the diversity that individuals bring and we invite you to consider a future with us, regardless of background, age, gender, national origin, ethnicity, religion, sexual orientation, ability or identity. We encourage individuals who may require any assistance or accommodations to let us know to ensure a seamless application experience. We are here to support you throughout the application journey and want to ensure all candidates are treated equally. If you are unsure whether you meet all the criteria or qualifications listed in the job description, we still encourage you to apply.</li></ul> #As you may already know, Syensqo is the newly established standalone company resulting from the recent spin-off of Solvay. While both organizations are in the process of finalizing the transition, some email communications related to your recruitment process may continue to come from Solvay. #Senior #LI-Onsite #LI-JM2

Solvay Interview Questions

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Solvay Interview Questions

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