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A/B Testing

Algorithms

Analytics

Machine Learning

Probability

Product Metrics

Python

Statistics

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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?

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?

Job Description:This engineer will own the design, development, and deployment of desktop, web, and hardware-integrated applications. The role blends C# WinForms and MVC development, hardware/software integration, and emerging machine learning applications. The ideal candidate is an independent problem-solver who can deliver results quickly while collaborating across teams. Required Qualifications3–5+ years of professional software development experience (5+ preferred).Strong C# experience with WinForms and legacy GDI+ development.Proven ability to independently deliver projects from concept to deployment.Knowledge of RESTful API design and consumption.Practical SQL experience.Familiarity with Git version control.Basic knowledge of JavaScript frameworks (Node.js, jQuery, etc.).Comfort with Bash shell scripting. Preferred/Desirable SkillsExperience with Linux administration and hardware troubleshooting.Exposure to C++ development for embedded systems.Hands-on experience with Python Flask/Django.Familiarity with machine learning frameworks (scikit-learn, PyTorch).Knowledge of cloud services (AWS S3, Ubuntu EC2 instances). Key ResponsibilitiesDesign, develop, and maintain C# WinForms desktop applications for internal manufacturing optimization.Support and enhance C# MVC applications used with our 3D scanning hardware.Build and maintain RESTful APIs for communication between hardware and software systems.Occasionally develop and maintain C++ utility applications for multiple environments.Manage deployment of software updates to scanning hardware and internal tools.Collaborate with QA, IT, and other developers to deliver projects through the full SDLC.Explore and contribute to projects in Python (Flask/Django), machine learning (scikit-learn, PyTorch), and AI-driven solutions.Use AWS S3 and Ubuntu instances in development workflows.

Duration: 12+ Months Contract with possible extension Note: Native/Fluent Spanish speaker Job Description:Assists in the research and assessment of business goals, objectives and needs to align information technology solutions with business initiatives for multiple, less complex accounts. Serves as the liaison between technical personnel and business area for multiple accounts. Essential Job Functions:<ul><li>Assists in planning and designing business processes; assists in formulating recommendations to improve and support business activities.</li><li>Assists in analyzing and documenting client's business requirements and processes; communicates these requirements to technical personnel by constructing basic conceptual data and process models, including data dictionaries and volume estimates.</li><li>Assists in creating basic test scenarios to be used in testing the business applications in order to verify that client requirements are incorporated into the system design.</li><li>Assists in developing and modifying systems requirements documentation to meet client needs.</li><li>Participates in meetings with clients to gather and document requirements and explore potential solutions.</li><li>Executes systems tests from existing test plans.</li><li>Assists in analyzing test results in various phases.</li><li>Participates in technical reviews and inspections to verify 'intent of change' is carried through phase of project.</li></ul> Basic Qualifications:<ul><li>Bachelor's degree or equivalent combination of education and experience</li><li>Bachelor's degree in business administration, information systems, or related field preferred</li><li>Three or more years of business analysis experience.</li><li>Experience working with the interface of information technology with functional groups within an organization.</li><li>Experience working with business processes and re-engineering.</li><li>Experience working with computer programming concepts and basic language.</li></ul> Other Qualifications:<ul><li>Interpersonal skills to interact with customers and team members</li><li>Communication skills</li><li>Analytical and problem-solving skills</li><li>Presentation skills to communicate with management and customers</li><li>Personal computer and business solutions software skills</li><li>Ability to work in a team environment with multiple team members and the ability to multitask</li></ul> Key Skills:<ul><li>Business Analysis, Business processes, Fluent Spanish speaker</li></ul> Education:<ul><li>Bachelor's degree or equivalent combination of education and experience</li></ul> About US Tech Solutions:US Tech Solutions is a global staff augmentation firm providing a wide range of talent on-demand and total workforce solutions. To know more about US Tech Solutions, please visit <a>www.ustechsolutions.com</a> US Tech Solutions is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, colour, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran. Recruiter Details:Name: RoushanEmail: roushan.roy@ustechsolutionsinc.comInternal Id: 25-54594

Job Description:Performs complex to highly complex business analysis work. Coordinates the collection, development, and documentation of user requirements. Reviews, assesses, and develops business processes. Creates and validates user acceptance testing. Provides post-implementation support for systems, assists throughout the system development and maintenance lifecycle, and conducts research and special project activities. Essential Job Functions:<ul><li>Facilitates the resolution of service requests. </li><li>Monitors system integration and user acceptance testing prior to implementation. </li><li>Assists developers, systems analysts, or customers on system applications, software, and hardware.</li><li>Provides production support to users of systems and applications, including on-site support as needed. </li><li>Develops and/or reviews complex system documents to convey business requirements and support efficient system design. </li><li>Analyzes user requirements, procedures, and problems to automate or improve STRM. Establishes long-range objectives and specifies the strategies, technologies, and actions to achieve them. </li><li>Analyzes program policies and procedures to determine their effect on STRM. </li><li>Provides complex quality assurance consultation to, or oversight of, projects, assignments, or special initiatives. </li><li>Provides staff and users with assistance solving computer-related problems, such as malfunctions and program problems.</li><li>Develops training curriculum and conducts formal training sessions covering STRM. </li><li>Develops the design and/or review of test cases, processes change requests, and manages a project’s scope, acceptance, installation, and deployment.</li><li>May lead and/or participate in developing corrective actions plans for projects or programs determined to be out of compliance with established policies or processes.</li><li>May review complex project deliverables such as project charters, design documentation, test plans, and risk assessment plans, and may provide comments and suggestions to document owners. </li><li>Participates in and may lead oversight of the STRM Business Team.</li><li>Maintains confidential and sensitive information.</li></ul> Minimum Qualifications:<ul><li>Graduation from an accredited four-year college or university with a bachelor's degree in Business Administration, Computer Science, Management Information Systems, or a related field. </li><li>Three to five years of relevant work experience in business analysis.</li></ul> Preferred Qualifications:<ul><li>Six or more years of relevant work experience related to business analysis.</li><li>Progressive work experience with financial assistance programs within the water industry, engineering field, finance industry, a governmental agency, and/or another related industry.</li><li>Experience in project work involving Microsoft Power Platform tools and applications.</li><li>Certification through the International Institute of Business Analysis (IIBA) or a comparable business analysis organization.</li><li>State agency database/application experience.</li></ul> About US Tech Solutions:US Tech Solutions is a global staff augmentation firm providing a wide range of talent on-demand and total workforce solutions. To know more about US Tech Solutions, please visit <a>www.ustechsolutions.com</a> US Tech Solutions is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, colour, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran. Recruiter Details:Name: AbhinayaEmail: abhinaya.s@ustechsolutionsinc.comInternal Id: 25-54508

Job Description:Analyzing current business processes, workflows and procedures to identify areas for improvement.Developing and implementing optimized processes and procedures to enhance efficiency, productivity and customer satisfaction.Collaborating with stakeholders to design and execute new Quote to Cash products aligned with organizational goals.Monitoring and evaluating the effectiveness of implemented features, measuring key performance indicators and making necessary adjustments for continuous improvement.Stay updated on industry trends, emerging technologies and process improvement methodologies. Responsibilities:Help drive the roadmap for business process automation related to subscription functions; Quote to Cash.Gain cross functional alignment across product, sales ops, finance, legal, operations, services etc.Plans, implements and monitors business process changes for projectsAssists in making business decisions relating to system implementation, modification,maintenance, etc.Analyze complex business problems relating to end-to-end processes involving CPQ, Subscription Management, Entitlement Management, ERP.Collaborate closely with IT Architects and product management to define and implement effective and efficient solutions to help scale the business.Assume a hands-on role in testing solutions, identifying issues, validating solution meets specification and communicate to team members.Presents analyses, solutions and business cases to senior managementCoordinates with cross-functional team to develop business process requirements Experience:10+ years of experience in process analyst role, including substantial experience in Enterprise Applications (eg. eCommerce, Salesforce, ERP, Zuora etc.)Strong knowledge in enterprise CRM, CPQ, Order to Cash, SaaS / Cloud applications, with an enthusiasm to gain and apply new knowledge.Familiarity with process mapping and modeling techniques.Good understanding of business processes including CPQ, eCommerce, Contract, Subscription, ERP, Entitlement and Fulfillment systems.Strong analytical skills with the ability to collect, study and interpret complex data.Ability to manage and perform multiple complex tasks as part of the daily work assignment.Systems / Tools:Google Workplace (Gmail, Sheets, Docs, Slides, calendar)MSFT Office Application SuiteSFDC CPQ, Contracts and CRM modulesStrong communication and presentation skills to effectively communicate process changes and recommendations to stakeholders at all levels. Skills:EAbility to manage and perform multiple complex tasks as part of the daily work assignment.Systems / Tools:Google Workplace (Gmail, Sheets, Docs, Slides, calendar)MSFT Office Application SuiteSFDC CPQ, Contracts and CRM modulesStrong communication and presentation skills to effectively communicate process changes and recommendations to stakeholders at all levels. Education:Bachelor’s degree in business administration, management or a related field. About US Tech Solutions:US Tech Solutions is a global staff augmentation firm providing a wide range of talent on-demand and total workforce solutions. To know more about US Tech Solutions, please visit <a>www.ustechsolutions.com</a>.US Tech Solutions is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran. Recruiter’s email id Mehrajul@ustechsolutionsinc.com ID: # 25-54457

Job Description:Duration: 12Months Contract (Possible temp to hire) Job Description:Hours/Schedule: Schedule: 8:30am to 5pm with a 30-minute lunch or 8 to 5 with an hour lunch - Potential OT.Hybrid - Onsite 3x per week. Day to day: There is a development and recurring or operational focus for the analyst. The development work is consultative, customer-facing, and requires understanding I/S business processes. Work involves facilitating meetings, gathering and documenting requirements, interacting with management and multiple teams to complete work, designing and developing a solution, and presenting outcomes to customers. This work requires a technical focus as well as a business perspective and consultative mindset. The recurring or operational work is recurring, repeatable tasks and includes one-time ad-hoc requests. Recurring reports and data entry are well defined and are as automated as possible. Recurring work is reviewed annually at a minimum to ensure it continues to meet business needs. This work requires knowledge of reporting and data tools and communication with customers. The operations focuses on timeliness, accuracy, consistency, and providing the key customer insights and analysis to help with business needs and decisions. Responsibilities:Creates and analyzes reports to support operations. Ensures correctness of analysis, and reports findings in a concise manner to senior management. Directly responsible for accuracy of data as financial and operational decisions are made based on the data provided. Generates internal and external reports to support management in determining productivity and efficiencies of programs or operational processes. Revises existing reports and develops new reports based on changing methodologies. Analyzes reports to ensure accuracy and quality. Tracks and verifies all reporting statistics. Communicates and trains employees and managers on the complex database programs used to generate analytical data. Designs, codes, and maintains complex database programs for the extraction and analysis of data to support financial and operational decisions. Experience:4 Years Research and analysis experience. Skills:Strong organizational, customer service, communications, and analytical skills. Advanced experience using complex mathematical calculations and understand mathematical and statistical concepts. Knowledge of relevant computer support systems. Ability to train subordinate staff including provide assistance/guidance to staff in design/execution of reporting needs. Proven experience with report writing and technical requirements analysis, data and business process modeling/mapping, and methodology development. Strong understanding of relational database structures, theories, principles, and practices. Required Software and Other Tools: Advanced knowledge of Microsoft Office. Knowledge of programming languages across various software platforms, using DB2, SQL, and/or relational databases. Knowledge of tools such as Visual Basic and Macros useful in automating reporting processes. Education: Bachelor's degree in Statistics, Computer Science, Mathematics, Business, Healthcare, or other related field. About US Tech Solutions: US Tech Solutions is a global staff augmentation firm providing a wide range of talent on-demand and total workforce solutions. To know more about US Tech Solutions, please visit www.ustechsolutions.com. US Tech Solutions is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran. Recruiter Details: Name: Shailesh Email: shailesh.c@ustechsolutionsinc.com Internal Id: 25-53080

Job Description:Duration- Full Time Description: What you'll doChance to work on financial data for complex problems/challenges.Utilize LLMs/Genai systems and architectures to build and deploy state-of-the-art Genai systems.Our team collaborates closely with Finance teams to enhance financial planning and strategic decision-making through cutting-edge data-driven solutions.We specialize in a range of initiatives which provides actionable insights into trends and patterns and leveraging Generative AI (Genai) to produce concise, insightful summaries that empower decision-makers.By integrating these innovative approaches, we strive to drive efficiency, accuracy, and impactful outcomes in financial operations. About Team:Our team works closely with our US stores and eCommerce business to better serve customers by empowering team members, stores, and merchants with technological innovation. From groceries and entertainment to sporting goods and crafts, Client U.S. offers an extensive selection that our customers value, whether they shop online at Client.com, through one of our mobile apps, or in-store.Focus areas include customers, stores and employees, in-store service, merchant tools, merchant data science, and search and personalization. What you'll do:Lead high-caliber team to build large-scale Genai systemsDevelop data science systems and tools for retail; e-commerce applications:Leverage LLMS to summarize and build large scale applicationsEstablish cross-functional relationships to maintain win-win situation for the corporationCollaborate with various product stake holders and business owners to formulate and productionize a solution What you'll bring: Master's degree or PHD in Statistics, Economics, Analytics, Mathematics, Computer Science, Information Technology or related field and 7years' experience in the related field. Must have qualificationsStrong solution architecture mindset, with the ability to apply AI/ML technologies to solve complex business problems.Experience with training and inference of large-scale AI models such as Large Language Models (LLMs), multimodal models, and reasoning models.Knowledge of advanced model optimization techniques, including quantization, pruning, distillation, Low-Rank Adaptation (Lora), and Parameter-Efficient Fine-Tuning (PEFT) for cloud deployment.Solid understanding of LLMs and Genai ecosystems, including GPT, Llama, Mistral, Claude, Gemini, AWS Sonnet, and related frameworks/tools.Hands-on experience with RAG (Retrieval-Augmented Generation), AI agent development, and frameworks such as Lang Chain, Langgraph etc., Great to haveExperience with Big Data processing and feature engineering using SparkExperience with training machine learning models through Cloud Services including Google Cloud Platform and Microsoft AzureHands on experience of designing and training large DL models on GPU Behavior qualificationsProblem solver with can-do attitude, not afraid of facing new problems, technical challenges, delivery pressuresAbility to clearly define problems, models and constraints from informal and flexible business requirementsTech leadership with teamwork spirit, quick adaptation to new environmentForm collaborative working environment.Demonstrated ability to manage multiple cross-functional initiatives, balancing competing priorities and deadlines.Comfortable working in ambiguous, rapidly changing environments, with strong problem-solving and adaptability.Highly motivated to demystify emerging technologies and drive adoption across teams and stakeholders. About US Tech Solutions: US Tech Solutions is a global staff augmentation firm providing a wide range of talent on-demand and total workforce solutions. To know more about US Tech Solutions, please visit www.ustechsolutions.com. US Tech Solutions is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran. Ensures effective and efficient operations through conducting operations analyses (i.e. operational effectiveness and capacity utilization), and recommends improvements. Details Job ID-25-53538

Duration: 12 months Contract Job Description:• Lead and manage all engineering resources (internal, contract, and offshore) across Salesforce, SAP integration, AWS, and custom-built platforms.• Own delivery across sprints, releases, projects, enhancements, and production fixes.• Break down technical work, estimate complexity, assign tasks, and enforce engineering accountability.• Oversee code quality through code reviews, standards enforcement, and mentorship.• Provide hands-on guidance for troubleshooting, debugging, and resolving complex technical issues.• Ensure timely, reliable delivery of new development and ongoing system enhancements. Responsibilities:• Serve as the technical design authority across Salesforce and integrated enterprise systems.• Own system architecture documents, technical designs, API/interface patterns, and integration frameworks.• Drive consistency across domain-specific technical managers (Salesforce, SAP, AWS, etc.).• Validate integration flows between Salesforce ↔️ SAP ↔️ AWS ↔️ homegrown apps.• Approve technical solutions before development begins and prior to SIT. Experience:• Ensure SIT readiness, including test data, integration setup, and technical environment availability.• Support QA and SIT teams by ensuring interfaces and technical dependencies are functional.• Own resolution of SIT and UAT technical defects across all systems.• Partner with DevOps/Release Management to improve CI/CD, deployments, and environment reliability.• Drive reduction in production incidents through improved engineering discipline.• Provide daily technical direction to developers, technical managers, offshore pods, and platform specialists.• Partner with Product, Business Analysts, and the Director to evaluate technical feasibility.• Act as the senior escalation point for major production issues. Skills:• Support the Director in implementing a more structured engineering organization.• Help define engineering processes such as:• Coding standards• Architecture review practices• SIT/UAT readiness criteria• Release management processes• Documentation standards• Provide input on team structure, roles, skill development, and staffing needs.• Help improve governance, intake, prioritization, change management, and operational maturity. Education:· Bachelor’s Degree or Equivalent Experience About US Tech Solutions:US Tech Solutions is a global staff augmentation firm providing a wide range of talent on-demand and total workforce solutions. To know more about US Tech Solutions, please visit <a>www.ustechsolutions.com</a>. US Tech Solutions is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity,national origin, disability, or status as a protected veteran. Recruiter Details:Name: Anil Kumar GajulaEmail ID: <a>anilkumar@ustechsolutions.com</a>Internal Job ID: 25-54580

Job Description:Contract 6-12 Month Hybrid, 2-3 days onsite Description: Primary Tasks and responsibilities- o Champion AI to Key Stakeholders: Act as the primary advocate for AI initiatives, communicating the benefits and potential of AI technologies and Governance to senior leadership and other key stakeholders to secure buy-in and support. o Implement AI Platforms: Oversee the deployment and integration of AI platforms across the organization, ensuring they meet business needs and are scalable for future growth. o Advise All Teams on AI: Provide expert guidance and support to various departments on how to leverage AI to solve business problems and improve processes. o Develop and execute the AI Roadmap: Create a strategic plan for AI initiatives, outlining key projects, timelines, and milestones, and ensure its successful execution. o Implement Success Measurement Metrics: Define and track key performance indicators (KPIs) to measure the impact and success of AI initiatives, making data-driven adjustments as needed. o Implementation and Usage of Implementation and Usage of Generative AI technologies such as Microsoft Co-Pilot and lead the deployment and adoption of such technologies, ensuring they are effectively utilized to enhance productivity and decision-making. o Support business domain teams such as R&D and Marketing with AI Capabilities: Collaborate with domain teams to integrate AI technologies into products and services, enhancing their value to customers. o Drive strategic adoption of AI solutions across the enterprise.: Provide strategic leadership and direction for AI initiatives. About US Tech Solutions: US Tech Solutions is a global staff augmentation firm providing a wide range of talent on-demand and total workforce solutions. To know more about US Tech Solutions, please visit www.ustechsolutions.com US Tech Solutions is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, colour, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran. Regards Mohd Rehan mrehan@ustechsolutionsinc.com Internal ID:#: 25-54069

Duration :: 5 Months Contract Top 3 Skills Needed or Required <ul><li>Master’s degree in data science, Statistics, Computer Science, Economics, or a related field.</li><li>5+ years’ experience in analytics, risk, marketplace operations, or payments.</li><li>Advanced SQL(Big Query), Tableau, Excel, and data analysis capabilities.</li></ul>What project or initiative will they be working on?<ul><li>Lead high-complexity investigations into seller payout eligibility.</li><li>Own day-to-day data operations, including building SQL queries, audits, reconciliations, and deep-dive payment risk analysis.</li><li>Identify risk patterns, anomalies, and operational gaps; recommend and implement solutions.</li><li>Work with Business, Ops, Product, and Seller Risk to define and enhance payout policy and operational workflows.</li><li>Provide guidance to support and support prioritization of case queues.</li><li>Create reporting, dashboards, and insights that influence payout strategy and decision frameworks.</li><li>Present findings and recommendations to leadership.</li></ul> Job Description<ul><li>This role is a key member of the Marketplace Partner Payments team to help on Payout strategies. This role requires a strong analytical and operational background, the ability to investigate complex seller cases, interpret large datasets, and make informed payout recommendations. The senior contractor will also help shape operational frameworks, partner with cross-functional teams, and drive improvements in the seller settlement experience.</li></ul> What are the day-to-day responsibilities?<ul><li>Perform data pulls, validations, and reconciliation tasks for payout workflows.</li><li>Investigate seller accounts for payout eligibility and apply policy criteria.</li><li>Review documentation and evaluate compliance with payout guidelines.</li><li>Support senior team members in deep-dive analysis for risk or settlement anomalies.</li><li>Deliver insights and structured summaries to support payout decisions. Work with Business and Ops teams to support smooth seller settlement processes.</li><li>Ensure SLA adherence and high-quality execution on daily tasks.</li><li>Proficiency in data visualization tools (e.g., Looker, Power BI, Tableau) and building self-serve analytics.</li><li>Excellent communication skills with the ability to translate complex data into actionable insights.</li></ul> About US Tech Solutions:US Tech Solutions is a global staff augmentation firm providing a wide range of talent on-demand and total workforce solutions. To know more about US Tech Solutions, please visit www.ustechsolutions.com. US Tech Solutions is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, colour, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran. Recruiter Details: Recruiter name: Ajeet KumarRecruiter’s email id : ajeetk@ustechsolutionsinc.comJobDiva ID :: JobDiva # # 25-54361

Question	Topic	Difficulty	Ask Chance
Boarding Times Bias	Statistics	Medium	Very High
Hundreds of Hypotheses	Statistics	Medium	Very High
Decreasing Comments	Product Metrics	Easy	Very High

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