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1904Labs Interview Questions

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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

You are testing hundreds of hypotheses with many t-tests. What considerations should be made?

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

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?

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?

1904Labs Salaries by Position

About Us At 1904labs, we are a human-centered technology company that focuses on using modern tools and technologies to solve enterprise organizations' crunchiest challenges. We look for innovative, courageous, intensely curious, and team-minded people. At 1904labs, we are committed to providing each team member with opportunities that will allow personal and professional growth. The Role As a Data Engineer team member, you will work in an Agile environment towards developing, operating, and designing components in the data layer. This will include data strategy, data lineage, data warehousing and storage, cloud architecture storage, optimization, Spark, Hive, Scala, Big Data, and a deep understanding of how data is stored and accessed in a modern environment. Requirements Proficient in at least one programming language. More is better, as is experienced with functional and object-oriented languages. For example Scala, Java, or Python. Proven and recurring success applying software engineering practices like requirements gathering, design, and testing on a team. Working knowledge of the Linux command line and shell scripting Proficient in SQL Comfortable leading discussions with clients, acting as a guide to help them accomplish their tech goals. Desired Skills In addition to the requirements above, Data Engineers at the 1904labs have proven work experience in at least two of the following areas: Relational databases like PostgreSQL, Oracle, SQL Server Non-relational or NoSQL databases like MongoDB, ElasticSearch, Solr, Redis Big Data / Hadoop technologies like Spark, Hive, HBase / Cassandra Data Modeling for Data Warehouses, Data Lakes, or operational applications Cloud-based data ecosystems in AWS, Azure, or GCP. For example, in AWS services like S3, Kinesis, EMR, Athena, or Redshift. In Azure, services like Blob storage, Event Hub, Data Factory, Synapse, or Cosmos DB. In GCP, services like Pub/sub, Dataproc, BigQuery, BigTable, or Datastore. Streaming technologies like Spark Streaming or NiFi, message queues like Kafka or Rabbit MQ Why Choose 1904labs? Innovation Hours - 10% of our work week is set aside to work on our own ideas and projects. We believe that giving folks the time and space to innovate and tinker allows them to bring fresh ideas and perspectives to the work we do. Innovation First - work where it makes sense - each day we want you, in conversation with your team, to work from where it makes the most sense. Competitive salary, bonus, and benefits (medical, dental, paid parental leave, 401k match). We invest in the personal and professional growth of every employee because we believe growth leads to innovative solutions and personal fulfillment. Career paths are crafted by you and supported and nurtured by 1904labs. Experienced team made up of intensely curious and innovative thinkers from a variety of disciplines who inspire each other to come up with the best solutions possible. Being a trusted advisor to our clients allows us to affect change within their organizations. We work to create an intentional culture crafted around promoting and supporting the needs of our employees as whole people. Flexible schedules and a Human-Centered approach to work. Strong commitment to the community. Take advantage of the relationships weve built with our established community partners or pursue any other community endeavor you are passionate about. The offered salary will be dependent upon experience Dont meet every requirement? No problem. We encourage you to apply if your skills and experience align without meeting all requirements. We are committed to fair hiring practices and equal treatment and opportunity in all areas of recruitment, selection, and employment without regard to gender, race, religion, national origin, ethnicity, disability, gender identity/expression, sexual orientation, veteran or military status, or any other category protected under the law. 1904labs is an equal-opportunity employer; committed to an environment of inclusion, free from discrimination, harassment, and retaliation.

1904Labs Interview Questions

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1904Labs Interview Questions

1904Labs Salaries by Position

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