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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 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

Talent Software Services Salaries by Position

Business Analyst Job Summary: Talent Software Services is in search of a Business Analyst for a contract position in Chicago, IL(Hybrid). The opportunity will be six months with a strong chance for a long-term extension. Primary Responsibilities/Accountabilities: The primary role of the Analytics & Insights, Solutions, and Reporting (AISR) business analyst is to facilitate discussions with Operational Non-Financial Risk (ONFR) stakeholders to define and document business requirements for ONFR business solutions. Solutions include business intelligence visualizations, reports, and dashboards; machine learning models; one-off data analysis requests; and formal reporting. Secondary responsibilities may include assisting stakeholders with acceptance test planning; managing the team's solution backlog; and managing team solution changes / controls.<ul> <li>Collaborates with various ONFR teams across the project lifecycle to ensure solution delivery is aligned with business requirements.</li> <li>Develops informative, coherent, and usable project artifacts covering functional and non-functional business requirements.</li> <li>Our focus is primarily on ONFR solutions but these solutions may have broader, enterprise-wide focus.</li></ul> Qualifications: Candidates will typically have between 5 - 7 years of relevant experience and post-secondary degree in related field of study or an equivalent combination of education and experience. Deep knowledge and technical proficiency gained through extensive education and business experience. Specific skills sought include: Intermediate level of proficiency:<ul> <li>Organizational and process optimization</li> <li>Business architecture frameworks</li> <li>Stakeholder analysis and management</li> <li>Strong verbal and written communication skills</li> <li>Collaboration & team skills</li> <li>Analytical and problem-solving skills</li></ul> Advanced level of proficiency:<ul> <li>Facilitation skills</li> <li>Business requirements definition and analysis</li> <li>Functional analysis and application functional design</li> <li>Experience with enterprise risk solutions and / or Power BI solutions is a plus.</li></ul> If this job is a match for your background, we would be honored to receive your application! Providing consulting opportunities to TALENTed people since 1987, we offer a host of opportunities including contract, contract to hire and permanent placement. Let's talk!

Senior Software Engineer- Salesforce Developer Job Summary: Talent Software Services is in search of a Senior Software Engineer- Salesforce Developer for a contract position in VA that can be worked 100% remotely. The opportunity will be eight months with a strong chance for a long-term extension. Position Summary: The Senior Software Engineer- Salesforce.com Developer is responsible for the design, configuration and development of the client's Saleforce.com Sales and Service Clouds and other CRM-related applications/tools within the client's Corporate Systems Technology organization. The successful candidate will be a seasoned Salesforce.com software engineer with knowledge and experience in designing, building, testing, and documenting complex, highly scalable, and dependable capabilities and integrations on the Salesforce.com platform. The candidate will interact closely with project teams, scrum masters, other software engineers, business analysts, and test engineers to shape, identify, prioritize, and realize capability requirements in the delivery of business solutions. Successful candidates will have a comprehensive knowledge of Salesforce.com development tools, technologies, practices, and standards; proven ability to integrate large scale systems or third-party products; and a track record of delivering high-quality, solutions in a timely and effective manner. Primary Responsibilities/Accountabilities:<ul> <li>Builds, tests, deploys, and maintains production of Salesforces.com capabilities using Aura, Lightning Web Components, Apex, Visualforce, Salesforce API, Process Builder, and other Salesforce technologies.</li> <li>Provides maintenance and enhancements for Salesforce B2B commerce sites.</li> <li>Follows established coding standards and other group procedures, both individually and at a team level. Must ensure proper code reviews are held for the assigned work.</li> <li>Contributes to the engineering team's culture of high code quality. Accountable for the quality of code that is delivered to QA and production and must ensure that appropriate code reviews and unit testing are adequately performed.</li> <li>Ensures that continuous integration is performed on the application source code and constantly seeks to enhance the continuous integration methods of the development team to ensure extremely high quality of code.</li> <li>Works closely with project and business team to thoroughly understand the system requirements and ensure they are properly implemented. Also, must seek ways to meet the underlying business requirements with low-cost, yet highly re-usable patterns and actively escalate requirements that may cause unnecessary risk or cost.</li> <li>Experience and in-depth knowledge of cloud-based infrastructure components Expert-level Object Oriented knowledge, with demonstrated complex implementations a must, e.g., custom API's, optimization techniques, and design patterns.</li> <li>Ensure that application code adheres to enterprise and industry standards and best practices, including performance and security standards.</li> <li>Gather feedback from design and technical staff on application development needs and patterns. Must be able to work with Enterprise Architecture group to propose and solicit approval of new architectural patterns including documentation and presentation of the architectural approach, benefits/limitations, and other considerations (e.g., re-usability, security, performance, maintainability, etc.).</li> <li>Responsible for support of and coordinating with other Engineers, Architects and teams including other technology teams such as a User Experience team or an infrastructure team.</li> <li>Assists scrum master in project planning and estimating of project score items. Reports hours daily to administration for billing purposes.</li> <li>Provide Tier 2 application support and support projects as needed. </li></ul> Qualifications:<ul> <li>Bachelor's degree required.</li> <li>At least 8 years of directly related work experience in a professional position in software development or a related field.</li> <li>At least 7 years development experience, Salesforce.com</li> <li>Expert-level understanding of the Salesforce.com programming language, related optimization techniques, and design patterns including Lightning Web components.</li> <li>Must have strong knowledge in one or more of the following: Apex, Aura, Lightning Web Components, HTML, JavaScript,</li> <li>Preferred Experience with Salesforce Commerce Cloud.</li> <li>Experience using with Gearset.</li> <li>Preferred experience with AWS Services like Lambda, SNS/SQS, S3, IAM, CloudWatch, RDS &</li> <li>Fluency with CI/CD toolsets such as: CloudFormation, Bitbucket, Jenkins, Ansible a plus</li> <li>Experience or knowledge in deployment of cloud-based applications using AWS strongly preferred.</li> <li>Test-driven development and continuous integration experience is highly preferred.</li> <li>Experience working in an iterative DevOps environment (familiarity with Agile/Scrum required)</li> <li>Experience in adhering to software development guidelines and in performing code and design reviews.</li> <li>Effective communication skills are a must along with a strong customer orientation, and the ability to clearly discern client needs.</li> <li>Ability to effectively coordinate multiple responsibilities simultaneously, with fast, flexible work style.</li> <li>Knowledge of K-12 or Higher Education-related software applications is a plus. </li></ul> If this job is a match for your background, we would be honored to receive your application! Providing consulting opportunities to TALENTed people since 1987, we offer a host of opportunities including contract, contract to hire and permanent placement. Let's talk!

Are you an experienced Translational Research Scientist with a desire to excel? If so, then Talent Software Services may have the job for you! Our client is seeking an experienced Translational Research Scientist to work at their company in South San Francisco, CA. Position Summary: Seeking highly motivated and exceptional a Bio-conjugation Scientist for positions within the Discovery Chemistry Department located at our South San Francisco, CA site.<ul><li>The successful candidate will join multidisciplinary, highly collaborative discovery teams to invent Client medicines by applying optimized conjugation protocols, analytical techniques, and data analysis to synthesize drug candidates and intermediates.</li><li>Successful candidates must have excellent interpersonal, collaboration, and communication skills in a team environment.</li><li>Additionally, it is expected that the successful candidate will learn quickly through on-the-job training to become increasingly skilled and independent in reaction setup, route design and optimization.</li></ul> Primary Responsibilities/Accountabilities:<ul><li>Perform bioconjugations of linker-payload combinations to antibodies with emphasis on in-house established methods</li><li>Selection and application of appropriate purification techniques for biologics (i.e., SEC, hydrophobic interaction chromatography, ion exchange chromatography)</li><li>Acquisition and interpretation of analytical data such as LC/MS.</li></ul> Qualifications:<ul><li>Minimum qualifications include a B.S./M.S/ PHD in chemistry, biochemistry, or related field, with industrial or academic experience.</li><li>Hands on experience with conjugation, purification and characterization of antibody drug conjugates, and experience using analytical techniques/instrumentation, including chromatographic techniques such as HIC (Hydrophobic Interaction Chromatography) and RP (Reverse Phase), SEC, SDS-PAGE, UV-Vis.</li><li>Nice to have skills: Biologics analytic experience, purification techniques.</li><li>Must have: Bio-conjugation experience, protein biochemistry and Chemistry background.</li><li>Personality: Team player, Adheres to timeline, Communicative and collaborative.</li></ul>

Job Description: SCOPE OF THE PROJECT: The Replacement MMIS (RMMIS) project is a multi-year effort to replace the client's aging MMIS and related applications with more modern capabilities along with corresponding business operations services. The RMMIS program will be incremental and modular in nature with a focus on configurable and scalable integrations, which allow for more flexibility and reduces time and cost necessary to respond to federal and state enhancements. OBJECTIVES TO BE FULFILLED BY CANDIDATE: Specific duties include, but are not limited to: •Serves as a liaison between the business programs community and the IT organization in order to provide technical solutions to meet user needs. •Communicates with business owners, vendor analysts, and testers as needed throughout the SDLC •Analyzes business partner's operations to understand their strengths and weaknesses to determine opportunities to automate processes and functions. •Assists in the business process redesign and documentation as needed for new technology. •Translates high level business requirements into functional specifications for the IT vendor and manages changes to such specifications. Educates the IT vendor on the direction of the business. •Documenting and analyzing agency business processes and recommending improvements. •Participating in the requirements management processes, including change control, version control, tracking and status reporting, and traceability. •Providing requirements interpretation and guidance to technical and test teams. •Proactively identifying risks, issues, and action items leading to possible solutions. •Other project-related duties. REQUIRED SKILLS (RANK IN ORDER OF IMPORTANCE): •5+ years of experience in IT projects as a business/systems analyst or performing related duties, prefer government IT project experience •3+ years of experience in State/Commercial Medicaid Claims, Claims Payment Cycle, Waiver Programs, Provider Enrollment, and Reference •5+ years of experience gathering and documenting business rules, requirements, and processes •Excellent written and verbal communication skills •Ability to develop well-written Use Cases consumable by business and technical staff •Ability to gather business rules, requirements, and processes by interviewing business users and stakeholders and mining from documents, federal/state rules and regulations, etc. •Knowledge of formal business process documentation including best practices. •Understanding of business process modeling, including ability to utilize graphical process modeling tools •Ability to effectively and professionally communicate with staff at all levels including executive leadership, middle management, front-line supervisors, and front-line workers PREFERRED SKILLS (RANK IN ORDER OF IMPORTANCE): •Experience with MMIS (Medicaid Management Information System) - operations or project/development •Commercial integrations with Medicaid or other Government operations •Knowledge of Federal Certification requirements and processes is preferable. •Project management •Familiar with Agile Software Methodology •Public Sector Government Experience •Attention to detail and strong problem-solving skills •Demonstrate strong ability to take initiative and ability to work with minimal to no guidance REQUIRED EDUCATION: Bachelor's degree in a technical, business, or healthcare field or equivalent experience.

Are you an experienced Data Analyst with a desire to excel? If so, then Talent Software Services may have the job for you! Our client is seeking an experienced Data Analyst to work at their company in Chicago, IL. Primary Responsibilities/Accountabilities:<ul><li>Design and implement reporting solutions, business analysis and data analysis to meet business requirements and answer key business questions.</li><li>Perform data discovery to support report development and partner to implement new data sources, determine data gaps and/or answer data questions.</li><li>Provide value-add insights through partnering with business and credit stakeholders to understand business needs.</li><li>Partnering closely with Data and Analytics team and additional stakeholders to outline/identify requirements.</li><li>Broader work or accountabilities may be assigned as needed.</li></ul> Qualifications:<ul><li>5 years relevant data analysis experience</li><li>Strong knowledge of requirement-gathering methods including interviewing, data modeling, and business process modeling.</li><li>Demonstrated experience with report design</li><li>Comfortable in a fast-paced and ambiguous environment, and is a quick learner</li><li>Ability to work independently with limited supervision</li><li>Strong relationship-building and cross-functional collaboration skills</li><li>Excellent critical thinking/analytical/problem solving and organizational skills; ability to analyze issues/requests and determine next steps</li><li>Excellent written and oral communication skills</li><li>General understanding of data and how it’s used to inform business decisions; data-driven decision-making</li><li>Proficient with Microsoft Office Products (Word, Excel, PowerPoint, Access, etc)</li><li>Advanced Business Intelligence/Report Development skills (Dataset Design, Power BI preferred)</li><li>Advanced Programming, Query, Modeling and Analytical Tool skills (SQL)</li><li>Previous banking experience preferred</li></ul>

Principal Software Engineer  Job Summary: Talent Software Services is in search of a Principal Software Engineer for a contract position in TX(Remote) The opportunity will be eight months with a strong chance for a long-term extension. Primary Responsibilities/Accountabilities:<ul>	<li>Write clean, scalable and defect-free code using .NET programming languages</li>	<li>Familiarity with the ASP.NET framework, SQL Server and design/architectural patterns</li>	<li>Knowledge on multiple front-end technologies (e.g Angular/React, HTML/ CSS, JavaScript, XML, jQuery)</li>	<li>Experience in using NodeJS, ChartJS, MaterialUI libraries.</li>	<li>Create and maintain test cases using Nunit/Xunit, Karma etc.</li>	<li>Expertise in RDBMS concepts (e.g MSSQL, MySQL, MongoDB)</li>	<li>Hands on experience in creating CI/CD pipelines in GITLAB/GITHUB</li>	<li>Experience working on cloud-based applications using Azure/AWS/PCF.</li>	<li>Solid Debugging/Trouble shooting, and data analytical skills.</li>	<li>Having knowledge on Python, Client, DL and AI/AR will be an added advantage</li></ul> Qualifications:<ul>	<li>.NET Framework and .Net Core</li>	<li>ASP.Net, C#, MVC, Web-API, WCF, Entity Framework etc.</li>	<li>Angular/ REACT, HTML 4/ CSS 3.0/ Bootstrap 3, JavaScript, JQuery, XML/XSLT/JSON.</li>	<li>OOP concepts/SOLID principles/ design patterns</li>	<li>BDD/TDD, Unit Testing Front-end (NUnit/XUnit, Karma etc.)</li>	<li>MSSQL, MYSQL, SQLLITE/MongoDB.</li>	<li>GitLab/GitHub and CI&CD.</li>	<li>NodeJS, ChartJS, MaterilaUI.</li>	<li>Python, Client, DL and AI/AR.</li></ul> If this job is a match for your background, we would be honored to receive your application! Providing consulting opportunities to TALENTed people since 1987, we offer a host of opportunities including contract, contract to hire and permanent placement Let's talk!

Data Analyst IV Job Summary: Talent Software Services is in search of a Data Analyst for a contract-to-hire position in Marietta, GA.  Primary Responsibilities/Accountabilities:<ul>	<li>Analyze reporting requirements to determine development methods, development templates, and report design.</li>	<li>Workday Reporting expert with deep knowledge of the Workday ecosystem, including HCM, Recruiting, Benefits, Talent, Payroll, and Absence and Time Tracking.</li>	<li>Use best practices and industry standards in developing custom reports and calculated fields.</li>	<li>Partner with other report developers and functional experts to understand current demands of the business.</li>	<li>Work with technology/security teams to define and create calculated fields, security policies and other Workday objects to support the evolving reporting needs of the organization</li>	<li>Troubleshoot report related day to day transactions and doing tier II support as well for any requests that may come in from various teams and resolve issues in a timely manner.</li>	<li>Maintain proper change management documentation to satisfy the company’s internal/external audit controls.</li>	<li>Mentor less experienced team members on the team in writing report and building calculated fields.</li></ul> Qualifications:<ul>	<li>3+ years of hand-on experience in Report Writing preferably with an existing and up to date Workday Advanced Reporting certification.</li>	<li>Proficient in Advanced, Matrix and Composite Reports.</li>	<li>Experience with Workday Dashboards, Worksheets, Prism and Discovery Board.</li>	<li>Advanced proficiency in building complex calculated field.</li>	<li>Proficiency in using the Workday Enterprise Interface Builder (EIB), BIRT and Workday Studio.</li>	<li>Ability to work independently in a fast-paced environment.</li>	<li>Workday Pro certification desired</li></ul>   If this job is a match for your background, we would be honored to receive your application! Providing consulting opportunities to TALENTed people since 1987, we offer a host of opportunities including contract, contract to hire and permanent placement Let's talk!

This is a molecular biology position in the Molecular Profiling group, performing gene expression profiling using targeted and NGS technologies to support basic research, preclinical and development activities, and translational biomarker work. This high throughput lab requires an organized, highly motivated individual who is capable of multitasking projects in a collaborative environment. Job includes, but is not limited to: •RNA/DNA isolation from various tissues/cells from human, non-human primate, and rodents. •Targeted gene expression profiling using NanoString or other RT-qPCR systems. •Library prep and QC of samples for use with NGS platforms. •NGS sequencing Illumina MiSeq and Novaseq platforms. •Presenting relevant data and results. Qualifications: Education: B.S/B.A/M.S/PHD in biology, chemistry, biochemistry, or molecular biology. Required Experience •B.S/B.S with minimum 7+ years'; Masters with 5+ years'; PHD with only 3-4 years' of relevant work experience in industry or academia. Required laboratory skills/techniques: •Knowledge in molecular biology techniques, including RNA/DNA isolation and NGS library preparation. •Experience with RNA/DNA QC platforms such as the Fragment analyzer, Agilent Bioanalyzer or Tapestation. •Experience with RT-qPCR methods and platforms. •Familiarity with NGS platforms, specifically Illumina MiSeq and Novaseq. •Familiarity with NGS data QC and analysis workflows •Must be able to work up and troubleshoot new protocol methods centric to NGS platforms. •Must have good communication skills and be comfortable working in a team environment. •Ability to work independently and with minimal supervision. •Must have good organization and time management skills. Preferred Experience and Skills: •Experience with liquid automation for sample RNA/DNA isolation and NGS library prep. •Experience with multi-omics NGS platforms, low sorted cell populations, and/or single-cell RNAseq. •Experience with NGS analysis data visualization software such as Cell Ranger or BioTuring. •Familiarity with computer software: Illumina BaseSpace, Omicsoft, TIBCO Spotfire, Graphpad Prism, Ingenuity Pathway Analysis, Geneious. Personality: •Collaborative •Team Player •Very organized •Multitasker •Cross functional team environment and should be comfortable working in different groups. •Positive attitude •Excellent communication skills

Talent Software Services Interview Questions

Talent Software Services Interview Guides

Talent Software Services Interview Questions

Talent Software Services Salaries by Position

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