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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 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

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Job Title: Senior Java Software EngineerSkills: Spring boot, SQL / Mongo DB & MicroservicesExperience: 5 - 10 yearsLocation: Greater NoidaNotice Period: 0 - 30 days joiners preferable We at Coforge are hiring Senior Java Software Engineers with the following skillset: Design & Development:<ul><li>Designing, developing, and maintaining the backend architecture of our applications, ensuring high performance and responsiveness to requests from the front end.</li><li>Develop robust, scalable, and secure backend components and services using Java.</li><li>Collaborate with front-end developers, QA teams, and other stakeholders to design and implement features.</li><li>Write clean, maintainable, and well-documented code.</li></ul> System Integration:<ul><li>Integrate backend services with third-party APIs and databases.</li><li>Work on data storage solutions and ensure optimal performance of the applications.</li></ul> Testing & Debugging:<ul><li>Conduct unit and integration testing of the application to ensure quality and performance.</li><li>Troubleshoot and debug applications to optimize performance.</li></ul> Code Reviews & Best Practices:<ul><li>Participate in code reviews to maintain high-quality code standards.</li><li>Stay up-to-date with industry best practices and emerging technologies to suggest improvements.</li></ul> Collaboration & Communication:<ul><li>Collaborate effectively with cross-functional teams to define and ship new features.</li><li>Provide technical guidance and mentorship to junior developers.</li></ul> Required Skills and Qualifications:<ul><li>Strong proficiency in Java and J2EE technologies.</li><li>Experience with Spring Framework (Spring Boot, Spring MVC) and Hibernate.</li><li>Familiarity with RESTful APIs and microservices architecture.</li><li>Solid understanding of database systems (MySQL, PostgreSQL, Oracle).</li><li>Experience with version control systems like Git.</li><li>Knowledge of cloud platforms (AWS, Azure) is a plus.</li></ul> Problem-Solving:<ul><li>Excellent analytical and problem-solving skills with a strong attention to detail.</li></ul> Communication:<ul><li>Strong verbal and written communication skills, with the ability to articulate complex concepts to technical and non-technical stakeholders.</li></ul> Teamwork:<ul><li>Ability to work effectively in a collaborative, fast-paced environment.</li></ul> Education:<ul><li>Bachelor’s degree in Computer Science, Engineering, or a related field.</li></ul> Preferred Qualifications:<ul><li>Experience with NoSQL databases like MongoDB.</li><li>Familiarity with CI/CD pipelines and DevOps practices.</li><li>Understanding of front-end technologies such as JavaScript, Angular, or React (though this is not a primary requirement).</li></ul> Why Join Us:<ul><li>Innovative Projects: Work on cutting-edge projects that drive real business impact.</li><li>Growth Opportunities: Continuous learning and development opportunities to enhance your career.</li><li>Collaborative Environment: Be part of a supportive and inclusive team that values your contributions.</li><li>Work-Life Balance: We prioritize work-life balance with flexible working hours and a friendly work environment.</li></ul> Application Process: Interested candidates are encouraged to apply by submitting their resumes.

Role: Azure Databricks ArchitectSkills: Azure Databricks, Unity Catalog, Data transformation, Data Ingestion, Azure CloudExperience: 12+ yearsLocation: Greater Noida & Bengaluru We at Coforge are hiring Data Architects with the following skill-sets: <ol><li>12+ years of overall experience, including working on Databricks and completing 2-3 implementation projects.</li><li>Strong experience with Databricks.</li><li>Experience working with Azure Cloud.</li><li>Experience in 2-3 'Implementation' projects using Databricks.</li><li>Hands-on experience with ingesting complex data from various sources using Databricks.</li><li>Experience working with Bronze, Silver, and Gold layers in Databricks for data transformation.</li><li>Hands-on experience with Unity Catalog.</li><li>Experience in data governance & data lineage using Databricks.</li><li>Good to have explored the ML-Ops feature of Databricks.</li></ol>

Title: Data EngineerLocation: GurugramHybrid workingSkills: SCALA, AIRFLOW, SPARK, SCALA, HIVE, HADOOP and DATA ENGINEERING CONCEPTS <ul><li>Worked in a data engineering team environment of at least 5 engineers (agile, version control, etc.).</li><li>Built and maintained at least one data engineering pipeline/data product in production environments in public/hybrid cloud infrastructure.</li><li>Bachelor's or Master's or equivalent experience. Technical degree preferred.</li><li>Has strength in a programming language relevant to data (e.g. Scala, Spark, Python), moderate familiarity in other applicable languages.</li><li>Demonstrates actual successful hands-on experience designing and delivering projects using at least 1 data processing pattern (e.g. stream vs batch) and general familiarity of the others.</li><li>Has familiarity with traditional RDBMS system vs. distributed systems and is aware of modern data access patterns.</li></ul> Skills Required<ul><li>SCALA</li><li>AIRFLOW</li><li>SPARK</li><li>HIVE</li><li>HADOOP</li><li>DATA ENGINEERING CONCEPTS</li></ul>

Coforge is seeking a skilled and experienced to join our dynamic team. As, you will play a crucial role in designing and implementing robust and scalable solutions. You will be responsible & ensuring the delivery of high-quality software. Duties and Responsibilities:<ul><li>6+ years of relevant experience with expertise in areas of Software Development Life cycle including, Requirements Analysis, Technical Design, Development and Support. </li><li>Stack: Java 8+ version, Springboot, Microservices, SpringData JPA, Oracle DB. </li><li>Primary Skills: Proficient in Java 8, 11 or 17 and later versions </li><li>OOPs, Design patterns, Collections, Streams, Multithreading. </li><li>Proficient in Oracle DB. Writing complex queries in PL/SQL and mapping with ORMs.</li><li>Proficient in Restful API, Springboot. Experience in Java Spring Security. Experience in Java Spring MVC framework.</li><li>Experience in integrations with message streaming, memory cache platforms. Messaging system - Kafka</li><li>Complete Understanding of relational databases and noSQL databases. Relational DB (Oracle, MySQL) and no sql (Mongo)</li><li>Experience in XML, Apache Camel and Tomcat</li><li>Good Knowledge on Microservices Architecture</li><li>Do in-depth vast systems diagnostics and thorough root cause analysis. Troubleshooting skills with Log analysis, Tracing, Heap dump analysis, Performance issues and debugging. Docker, GitHub, Jenkins, understanding of Platform as a Service (PaaS) for application hosting. </li><li>Understanding of Airline domain is an added advantage</li><li>Secondary Skills: </li><li>Knowledge of AWS cloud services specifically ROSA, EC2, S3, API Gateway, SNS, SQS, Lambda, Step Functions, CloudFront, Security controls like NACL, Security Group, WAF. </li><li>Understanding and experience of JSP, Servlet, JavaScript, CSS and HTML etc. </li><li>Log Processor. ELK stack. Agile, JIRA, Confluence, OpenShift, Kubernetes, Docker, CI/CD pipeline etc. </li><li>Integrating with Static code analysis tool like Sonar, Conducting code reviews. </li><li>Soft Skills: Good verbal communication and written skills. </li><li>Good problem-solving skills. Providing regular status update, clearly calling out blockers. Good understanding and working knowledge of message queue-based integrations.</li><li>Stay up-to-date with the latest trends and advancements in technologies, recommending and implementing best practices</li></ul> Qualifications:<ul><li>Bachelor's or Master's degree in computer science or related field.</li><li>Strong communication, organizational, analytical and critical thinking skills</li><li>Ability to work effectively in a collaborative team environment.</li><li>Relevant certifications are a plus.</li></ul>

Job Title: Azure Data EngineerSkills: Azure, Python, Java, Scala, PySpark, SQL, Hive, Pig, Hadoop, Cloud, AWS, Databricks, Datalake, and Big data will always be there on-prem.Experience: 7+ yearsJob Location: Dallas, TXFTE/ Onsite We at Coforge are hiring Azure Data Engineer with the following skillset:<ul><li>Over 7-10 years of experience as a Data Engineer</li><li>He has hands on experience with Python, Java, Scala, PySpark, SQL, Hive, Pig, Hadoop Ecosystem on both on-premises and cloud (AWS) Infrastructure.</li><li>In-depth understanding of Spark Architecture including Spark Core, PySpark, Spark SQL, Data Frames, Spark Streaming</li><li>Worked on Dimensional Data modelling in Star and Snowflake schemas and Slowly Changing Dimensions (SCD).</li><li>Experience on Azure Blob Storage and Cosmos Database for data transformation in Azure Databricks</li><li>Experience in performing ETL on top of streaming data from IOT Machines using Spark Streaming.</li><li>Worked in ETL, Provided technical consulting and guidance to development teams for the design and development of highly complex or critical ETL architecture.</li><li>Experience on building the reporting subscription application in AWS cloud ecosystem using Amazon S3, EMR, Glue, Dynamo DB, Lambda and Redshift Database</li><li>Hands on experience in importing and exporting data from databases like MySQL, MongoDB, Oracle, Teradata into HDFS and vice-versa using Sqoop.</li><li>Experience in performing analytics on structured data in Hive with Hive queries, Views, Partitioning, and Bucketing using HiveQL</li><li>Experience in writing the SQL and PL/SQL for creating the views and table for reporting and analytics.</li><li>Experience in usage of Hadoop distribution like Cloudera5.3 (CDH5, CDH3) and Hortonworks distribution.</li></ul>

Role: Senior Business Analyst with Data cloud - Snowflake experienceLocation: Oaks, PAKey Skills: Business Analysis, Data cloud - Snowflake, SQLExperience: 09+ yearsMode Of Hire: Full Time We at Coforge are hiring Senior Business Analyst with Data cloud - Snowflake experience and the following skillset:<ul><li>Should have experience as a Business analyst experience.</li><li>Good exposure to Projects involving SQL.</li><li>Should have experience with Data cloud - Snowflake.</li><li>Work with business partners, systems analyst, designers and programmers to create/analyze required project requirement documents</li><li>Communicate and interact with appropriate areas on problems, changes and enhancements that may impact data, workflow and /or functionality within Information Technology software.</li><li>Bachelor's degree or higher in computer science, information systems or equivalent work experience.</li></ul>

Coforge is hiring Java Technical Analyst/ Leads in Bengaluru, this is an urgent opportunity looking for early joiners. Title: Senior Java Developer Experience Level: 5-8 years Location: Bengaluru, India Job Type: Full-Time About the Role: We are seeking a highly skilled and experienced Senior Java Developer to join our dynamic team. The ideal candidate will have a strong background in Java backend development, with extensive experience in building and maintaining CI/CD pipelines, working with Kafka, and developing robust APIs. You will be responsible for designing, implementing, and maintaining high-performance applications that meet the needs of our business and clients. <ul><li>5-8 years of professional experience in Java backend development.</li><li>Proven experience in building and maintaining CI/CD pipelines.</li><li>Strong experience with Apache Kafka and data streaming solutions.</li><li>Hands-on experience with API development and integration.</li></ul> Technical Skills:<ul><li>Proficiency in Java and related frameworks (Spring, Hibernate, etc.).</li><li>Experience with build tools such as Maven or Gradle.</li><li>Knowledge of containerization technologies (Docker, Kubernetes).</li><li>Familiarity with cloud platforms (AWS, Azure, GCP) is a plus.</li><li>Strong understanding of version control systems (Git).</li></ul> Soft Skills:<ul><li>Excellent problem-solving skills and attention to detail.</li><li>Strong communication and collaboration skills.</li><li>Ability to work independently and as part of a team.</li><li>Eagerness to learn and adapt to new technologies and methodologies.</li></ul> Preferred Qualifications:<ul><li>Experience with microservices architecture.</li><li>Knowledge of relational and NoSQL databases.</li><li>Understanding of messaging systems and event-driven architecture.</li><li>Experience with agile methodologies and tools (Jira, Confluence).</li></ul> What We Offer:<ul><li>Competitive salary and benefits package.</li><li>Opportunities for professional growth and development.</li><li>Collaborative and innovative work environment.</li></ul>

Coforge Interview Questions

Coforge Interview Guides

Coforge Interview Questions

Coforge Salaries by Position

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