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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

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?

Flexton inc. Salaries by Position

Job Title: SW Engineer II – Java Location: Bentonville, AR12+ Months contract. Basic Qualifications:<ul><li>4+ years' experience designing and implementing Java backend applications.</li><li>Well versed in data structure and algorithm problems.</li><li>Experience with REST API web services using Spring Boot Framework in Java.</li><li>Excellent oral and written communication skills, with the ability to present to both technical and non-technical audiences.</li></ul> If interested, please share your resume with me.

Job Title: Technical Product ManagerLocation: San Jose, CA (Hybrid)Rate: $70-$75/hr on W2 Only Only USC and GC holders Experience: 7+ yearsKeywords: Product Manager, Engineering Teams, API Development, Platform, New Feature Development, eCommerce Responsibilities<ul><li>Develop and execute the product roadmap for platform modifications, regulatory compliance, and shipping.</li><li>Collaborate with engineering teams to guide API development and new feature integration.</li><li>Recommend new services and suggest improvements for platform efficiency.</li><li>Ensure new features align with technical standards and do not hinder platform performance.</li><li>Drive projects to completion with a proactive, ownership-driven approach.</li></ul>Qualifications<ul><li>7+ years of product management experience, preferably in eCommerce/retail, with a focus on the seller side.</li><li>Background in software engineering or technical field, transitioning into product management.</li><li>Strong experience in API development and platform applications.</li><li>Excellent communication and project management skills.</li></ul> Preferred<ul><li>Experience as a software engineer, particularly with eCommerce platforms.</li><li>Proven ability to create and execute product roadmaps, drive product vision, and work in cross-functional teams.</li></ul>

Job Title: Cyber Risk AnalystLocation: Cincinnati/Blue Ash, OH; Boca Raton, FL; Chicago, IL, or Charlotte, NC (Remote Role)Duration: 12 Month(s), Contract to Hire Keywords - Risk management experience, cyber security frameworks, such as, NIST-CSF, risk tools Required Skills: The IT risk analyst supports the IT risk management practice, which ensures risk is proactively identified, decisioned, communicated and monitored. The primary responsibilities of the IT risk analyst are to perform assessments of potential risk exposures and prepare actionable risk reporting. In this role, it is critical to foster strong working relationships with leaders in other areas of the enterprise to perform evaluations of the enterprise risk posture and to offer independent advice regarding ways to reduce risk in line with established risk appetites. The successful candidate thinks strategically, is intellectually curious and is comfortable working in undefined problem spaces. As a member of a growing enterprise, the IT risk analyst will be expected to shape and further refine the risk program and will have the opportunity to operate with both autonomy and empowerment from senior leadership. Top Must Haves:Risk management experience: previous experience working and reviewing cyber risk assessmentsFamiliarity with cyber security frameworks, such as, NIST-CSFExperience with risk tools (administrative, power user, user)Facilitate cyber risk communications, cyber risk lifecycle task completion and cyber risk aware decision making with technical and non-technical audiences Key ResponsibilitiesCRA Responsibilities:Managing cyber risk assessmentsEvaluating internal Kroger operational controls for alignment to cyber risk treatment needs.Analyzing, framing, and updating threat and risk scenarios for use in cyber risk managementCommunicating cyber risk to Management and designated stakeholders.Assess and update cyber risk appetites for LOB.Evaluate cyber risk treatment options and facilitate communication to stakeholders.Training employees on cyber risk aware and risk first culture.Adjust cyber risk scores based on available controls and treatment options. Create cyber risk dashboards/reports based on complex risk, process and control relationships.Facilitate risk management oversight in supporting internal/external audits and regulatory exams. CRA Requirements:Prefer 5-10 years’ experience in governance, risk, and complianceJob field related certification(s), CISSP/CISA/CRISC (preferred but not required)Previous experience as a compliance analyst in a related field.In-depth knowledge of industry compliance requirements and standards.Proficiency in compliance management software, Archer, ServiceNow, MetricStream, etc.Ability to accurately complete applications for compliance certification.Ability to effectively train employees.Exceptional communication and interpersonal skills.Understanding of regulatory frameworksRequirements analysisAbility to develop standards to maintain legal complianceQuality managementCritical thinking and problem-solving skillsOrganization, project management, and strategic planning skillsFamiliarity with process improvement methodologyAttention to detailAbility to embrace complexity

Job Title: Data Engineer - PythonLocation: Blue Ash, OH – Day 1 Onsite.Duration: 6+ Months – CTH Key skills: Strong knowledge in object oriented programming - MustPython Programming - MustAdvanced SqlAzure – Azure function, Cosmos db / Synapse preferable. Consider any cloud experienceDataBricks – desirableCI / CD Job Description: Analyze, design and develop enterprise data and information architecture deliverables, focusing on data as an asset for the enterprise. Understand and follow reusable standards, design patterns, guidelines, and configurations to deliver valuable data and information across the enterprise, including direct collaboration with clients where needed.Experience designing, building, and deploying scalable cloud-based solution architecturesExpertise in creating lakehouses in Azure and building Realtime Streaming Analytics Platform leveraging Azure ServicesExpertised in Python, SQLExperience building data lakes & data warehouses to support operational intelligence and business intelligenceExperience working with Serverless Computing & Azure FunctionsExperience with Cosmos DB, Azure Data Explorer, Azure Synapse Analytics, Azure Data Lake, Azure Data Factory, Azure SQL, Azure Databricks, Azure Machine Learning or equivalent tools & technologiesExperience with Kafka and/or other event streaming mechanismsExperience with monitoring/alerting techniques and APM toolsExperience automating infrastructure provisioning, DevOps, or Continuous Integration/DeliveryKnowledge of containerization and container orchestration technologies.Good understanding and/or experience writing software in one or more languages, such as Java, Go, JavaScript, C++, or similarFamiliarity with standard IT security practices such as identity and access management, SSO, data protection, encryption, certificate, and key managementFamiliarity and good understanding of infrastructure – storage, networking etc.Strong analytical problem-solving skillsExcellent written and verbal communication skillsSelf-starter takes the initiative and works well under pressureBusiness-minded approach to time, costs, and milestonesLead the analysis of the technology environment to detect critical deficiencies and recommend solutions for improvementMust be very organized, able to balance multiple priorities, and self-motivatedFamiliarity or experience with building AI/Client solutions

Job Title: Sr Java developer with nosql and Cloud Duration - Fulltime/ContractSalary - 20 to 25 LPA fixed 5+year exp Back-end / Integration:<ul><li>1 Java Developer with Java and Springboot.</li><li>Strong in DS/Algo</li><li>Any nosql database like Mongo, cassandara needed.</li><li>Exp on cloud (Aws/Azure/Gcp) needed.</li></ul> Shishir

Flexton Inc., Established in 2007, headquarter is in San Jose, CA with development centers in India at multiple locations. We are a leading professional services company offering a unique product mix that extends into Technology, Consulting, Digital and Operations. Flexton has been recognized multiple times by Inc 5000 as the Fastest Growing Company. Job DescriptionBelow is the complete job description Job Description: Minimum Position Qualifications:Proficient in Python programming.Must have worked fraud detection project- Strong understanding of ML lifecycle and ML libraries like Scikit-learn, Keras, Pandas, XGBoost, LightGBM etc.- Experience with containerization (Docker) and orchestration (Kubernetes).- Familiarity with CI/CD pipelines and tools like Jenkins.- Proficiency in BigQuery, PySpark, SQL, Apache Hadoop, HDFS, and Hive- Expertise in cloud platforms (Google Cloud, Azure or AWS).- Knowledge of ETL, data pipelines, and tools like Apache Spark and Apache Airflow.- Experience with MLflow for model management. Regards, Rahul Shrivastava.

Flexton inc. Interview Questions

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Flexton inc. Interview Questions

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