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Sendbird - The Chat Api For Mobile Apps And Websites Interview Questions

A/B Testing

Algorithms

Analytics

Machine Learning

Probability

Product Metrics

Python

Statistics

Sendbird - The Chat Api For Mobile Apps And Websites 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

<h3>Job Description</h3><div>Job Description<div><p>Sendbird is on a mission to build the AI workforce of tomorrow. Sendbird is the omnichannel AI agent platform enterprises choose to elevate the customer experience by initiating autonomous support & sales conversations, keeping humans in the loop for complex inquiries, and re-engaging customers with proactive business messages. We are the omnichannel AI agent platform enterprises choose to elevate customer experience. Trusted by 4,000+ of the world's most popular apps—including industry leaders like Match Group, Rakuten, Yahoo, and Coupang—Sendbird powers over 7 billion messages every month.</p><p>We're looking for a Forward Deployed Product Manager (FDP) to contribute to Sendbird's vision to connect businesses and individuals, empowering them to achieve more than ever before. As the FDP, you will be responsible for leading high-impact customer deployments of our AI Agent platform—from pilot to production—while acting as the connective tissue between customer feedback and Sendbird's core product roadmap.</p><em>We are a hybrid work environment requiring a minimum of 3 days/week in our San Mateo office.</em><p><strong>Who You Are</strong></p><ul><li>You have 2-4 years of previous experience in a PM or other product-facing role (consulting firm is a huge plus)</li><li>You have a CS degree or other technical equivalent</li><li>You understand code but want to be more business-facing</li><li>You are a mission-driven builder who thrives at the edge of product, engineering, and customer success. </li><li>You enjoy fast-paced environments, love solving messy problems, and have a strong desire to make an immediate impact through close collaboration with real users. </li><li>You have the confidence to lead externally and the humility to learn quickly.</li><li>You are spontaneous and adventurous - this role will require frequent travel, sometimes on short notice</li></ul><p><strong>What You Will Do</strong></p><ul><li>Work directly with customers to understand their business needs and design production-grade agents that deliver measurable value.</li><li>Capture insights from the field and turn them into clear feedback for product and engineering teams.</li><li>Contribute to internal tooling and playbooks that enable faster and more reliable future deployments.</li></ul><p><strong>What You Bring</strong></p><ul><li>Technical familiarity with AI tools, frameworks, or agent-based systems. </li><li>Curiosity about how AI can solve real-world business problems.</li><li>A hands-on mindset—you're excited to build, test, and iterate alongside engineers and customers.</li><li>Ability to work directly with customers and distill complex or vague needs into clear product outcomes.</li><li>High ownership and comfort with ambiguity—you move fast, adapt quickly, and drive progress without waiting for perfect plans.</li></ul><p><strong>Even Better If You Offer (optional)</strong></p><ul><li>Prior 0→1 product experience—ideally having built and launched something from scratch, such as in a founder or early team role.</li><li>Experience working with agent frameworks, LLM pipelines, or AI/ML tooling.</li></ul><p><strong>Our US benefits include (but are not limited to)</strong></p><ul><li>20 days PTO, 13 paid US company holidays, 7 sick days, 1 volunteer day, plus 2 rest/rejuvenation days and birthday day off</li><li>Company subsidized medical, dental, vision insurance (100% for the employee, 80% for dependents)</li><li>Flexible Spending Accounts or Health Savings Accounts, depending on your selected health insurance plan</li><li>Equity program</li><li>401K program</li><li>Parental leave </li><li>Life and disability insurance</li><li><em>Be Your Best Self:</em> An annual stipend of $3,500 (prorated by start date) for expenses ranging from professional development classes and training, to personality assessments, gym memberships, books, fitness classes, mental health services and massages</li></ul><p><strong>Pay Transparency</strong></p><p>For cash compensation, we set standard ranges for all roles based on function, level, and geographic location. To determine our ranges, we utilize a variety of compensation data benchmarked against similar-stage growth companies. A reasonable estimate of the current salary range for this role is $140,000 - $175,000. This range is specific to the San Francisco Bay market. We consider several factors when making final compensation decisions including, but not limited to, skill sets, experience and training, licensure and certifications, and other business and organizational needs which may cause your specific offer to vary from the amount listed above.</p><p><strong>Flexible Work Policy</strong></p><p>We offer a flexible work schedule at Sendbird. We also value collaboration and relationship building. With those values in mind, we require all employees within an hour's commute range of their local office to gather with their team in the office three days per week as a minimum. Some of our roles require a more frequent in-office schedule. Please work with your manager to understand the office time requirements for your position.</p><p><strong>What diversity and inclusion mean to us</strong></p><p>There is no such thing as a perfect candidate and the best employees come from a wide range of backgrounds, experiences, and skill sets. Sendbird is a place where everyone can learn and grow. We respect, promote, and encourage diversity for equal employment opportunities and encourage you to apply if this role excites you.</p><p><strong>About Sendbird</strong></p><p>Combining omnichannel AI and battle-tested, award-winning communication APIs, Sendbird enables businesses to build AI agents and meaningful customer connections at scale. </p><p>Trusted by 4,000+ leading apps—including DoorDash, Match Group, Noom, and Yahoo Sports—Sendbird powers over 7 billion conversations every month, offering exceptional reliability, security, and compliance that meet enterprise-level demands.</p><p>Headquartered in California, Sendbird is backed by ICONIQ, SoftBank, Tiger Global, Y Combinator, and other reputable investors.</p></div></div>

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

Sendbird - The Chat Api For Mobile Apps And Websites Interview Questions

Sendbird - The Chat Api For Mobile Apps And Websites Interview Guides

Sendbird - The Chat Api For Mobile Apps And Websites Interview Questions

Sendbird - The Chat Api For Mobile Apps And Websites Opening Jobs