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Woongjin, inc 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

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 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?

Woongjin, inc Salaries by Position

Company Description For More Open Positions Visit us at: http://recruiting.woongjininc.com/ Our Mission WOONGJIN, Inc. is a rapidly growing team who provides a range of unique, exceptional, and enhanced services to our clients. We have a strong moral code that includes the service of goodness without expectations of reward. We are motivated by the sense of responsibility and servant leadership. Job Description Overview: We are seeking an experienced Business Analyst to join the Digital Business Division. The successful candidate will be responsible for supporting growth initiatives across company's services with a focus on Gen AI and CRM. This role requires strong knowledge and hands-on experience in CRM, email marketing, and/or Gen AI, as well as a track record of success in program management or business development, analyst roles. Responsibilities: <ul><li>Identifying new business opportunities and developing strategies and proposals</li></ul> <ul><li>Collaborating with cross-functional teams to develop and execute go-to-market motions</li></ul> <ul><li>Coordinate, support proof-of-concept efforts to convert to ongoing engagements</li></ul> <ul><li>Engaging clients on regular basis to identify needs, gather requirements, manage issues</li></ul> Salary: $75,000 - 85,000 a year Qualifications <ul><li>Bachelor's degree in business, marketing, analytics or related field</li></ul> <ul><li>At least 2 years of working experience in CRM, marketing and/or Gen AI in business development or business analyst or other operational roles</li></ul> <ul><li>Client facing experience</li></ul> <ul><li>Excellent communication and presentation skills, with the ability to present findings to both technical and non-technical audiences</li></ul> <ul><li>Experience with CRM platforms and tools such as Salesforce, Marketo, Eloqua, Adobe Campaign, etc.</li></ul> <ul><li>Knowledge of Gen AI technologies and their applications in the digital landscape is a plus</li></ul> <ul><li>Ability to work collaboratively in a fast-paced, dynamic environment</li></ul> <ul><li>Proven track record of driving results and contributing to business growth.</li></ul> Additional Information All your information will be kept confidential according to EEO guidelines. *** NO C2C ***

Company Description Our Mission WOONGJIN INC. is a rapidly growing team who provides a range of unique, exceptional, and enhanced services to our clients. We have a strong moral code that includes the service of goodness without expectations of reward. We are motivated by the sense of responsibility and servant leadership. Job Description This is an Enterprise System business Analyst role. The role will primarily involve business analyst and communication with system development team work, but will also include some traditional user interface and application module management as well. Responsibilities cover, analyze user requirements and create documents to communicate between business user and development team include monitoring and testing for new development. Salary: 100K-105K a year Qualifications Requirements: <ul><li>Bachelor Degree in IT and/or MIS related discipline</li><li>Bilingual (English + Korean): Must be able to read, write and speak in both</li><li>Over 5 years of business process analyze experience (Sales or logistics experience a plus)</li><li>IT system (SAP, On-Premise System, Etc.) operations support experience a plusMust have system analysis ability and knowledge of system interface include XML, JSON, Web API, Etc.</li><li>Must have knowledge in generating system and business process documentation</li><li>Critical thinking, analytical, problem-solving, prioritizing, time management skills required</li><li>Effective interpersonal skills to work cooperatively with co-workers and other staff</li><li>Strong communication-both oral and written to convey information in a clear and concise manner</li></ul> Preferred Skills: <ul><li>Strong business process related analysis and consultation skills; ability to lead and guide clients</li><li>Knowledge of ERP Logistics and general logistics and supply chain-related processes</li><li>Basic knowledge of SQL and web system management</li><li>Proven ability to multi-task and maintain organized handling multiple clients across different Samsung divisions</li><li>Strong aptitude to work within deadlines both independently and as part of a team</li><li>Experience using business intelligence tools (like Tableau and Microsoft BI Power)</li></ul> Additional Information All your information will be kept confidential according to EEO guidelines.

Company Description For More Open Positions Visit us at: http://recruiting.woongjininc.com/ Our Mission WOONGJIN, Inc. is a rapidly growing team who provides a range of unique, exceptional, and enhanced services to our clients. We have a strong moral code that includes the service of goodness without expectations of reward. We are motivated by the sense of responsibility and servant leadership. Job Description About the Process Innovation Team The Process Innovation (PI) team is a strategic project management organization that leads business units in analyzing, developing, and implementing innovative solutions and systems. The team operates in a high-speed, high intensity, and high-expectation atmosphere, driving results across all divisions within the company. Position Summary As a Sr. Analyst, you will manage company-wide data systems and collaborate with internal and external teams to develop a single source of truth across the organization. Additionally, you will use data-driven approaches to identify root causes to problems and develop new business processes and solutions. Key Responsibilities •Manage company-wide data systems, supporting data governance for the business •Collaborate with partner teams to drive results across the company, defining company technical requirements for systems and processes for development and/or enhancement •Identify root causes to problems and use data-driven approaches to develop and implement new business processes and solutions •Conduct analysis, interpret technical documents and processes, and draw valid conclusions regarding user needs and business requirements •Provide technical guidance; develop and update user documentation, written instructions, training guides, and manuals; meet with users to provide information regarding system changes and enhancements. Salary: $70,000-85,000 a year Qualifications Necessary Attributes & Skills •Experience with analyzing large sets of data, including master data management •Ability to structure and perform complex analysis within Excel and related BI tools such as Tableau •Excellent written and verbal communication skills, able to articulate complex or technical concepts into simple terms to working level teams as well as executives •Comfortable working in a fast-paced environment, navigating ambiguity, and managing competing priorities •Organized, detail-oriented, and strong analytics experience •Willing to work 4-5 days in the office per HR guideline and travel up to 10% of your time Background/Experience •Bachelor's degree (BA or BS) in Business, Finance, Information Systems, Engineering or related field preferred •At least 3-4 years of experience working as a data/business analyst, process improvement, or similar role Additional Information All your information will be kept confidential according to EEO guidelines. *** NO C2C ***

Company Description For More Open Positions Visit us at: http://recruiting.woongjininc.com/ ***NO C2C*** Our Mission WOONGJIN INC. is a rapidly growing team who provides a range of unique, exceptional, and enhanced services to our clients. We have a strong moral code that includes the service of goodness without expectations of reward. We are motivated by the sense of responsibility and servant leadership. Job Description The Logistics Transportation Pricing Analyst is responsible for analyzing the current market conditions and economic situations, continuously evaluating the efficiency of the surface transportation sector's internal cost route by route. Leveraging this analysis, the analyst will play a pivotal role in optimizing transportation pricing strategies to ensure cost-effectiveness and efficiency in our logistics operations. <ul><li>Transportation Data Analytics:<ul><li>Conducting internal and external transportation data analytics and cost research to support carrier negotiation.</li><li>Historic transportation cost data managing, and manipulating it in cost trend research.</li></ul></li><li>Carrier Negotiations:<ul><li>Negotiating the cost of transporting raw materials and finished goods.</li><li>Coordinating transport activities, ensuring efficient communication, and completing necessary paperwork.</li></ul></li><li>RFP Administration:<ul><li>Conducting internal and external RFQ data analysis and cost research for carrier sourcing.</li><li>Obtain quotes from different suppliers and negotiate price, quantity, terms, and conditions with transportation brokers/carriers</li></ul></li><li>Contract Administration:<ul><li>Work with the legal team to ensure all conditions regarding the business are met in the contract.</li><li>Administer the company's internal procurement system during the sourcing process.</li></ul></li><li>Supplier Evaluation and Comparison:<ul><li>Evaluate suppliers' quotes and compile a detailed assessment of cost element breakdowns.</li><li>Maintain quote comparison with financial simulation and provide data for freight forwarder/carrier selection</li></ul></li></ul> Qualifications <ul><li>Bachelor's degree in Business Administration, Supply Chain Management, Economics, or related field.</li><li>3+ years of experience as a Logistics Analyst or a similar role, demonstrating progressively increasing responsibilities and accomplishments.</li><li>Proficiency in Microsoft Access and Excel, with the ability to manipulate large datasets and create complex reports.</li><li>Strong analytical skills, with the ability to interpret data and provide actionable insights to improve logistics operations.</li><li>Excellent written and verbal communication skills, with the ability to effectively convey complex information to stakeholders at all levels.</li><li>Comfortable working with tables, charts, and numbers to present findings and recommendations.</li><li>Ability to thrive in a fast-paced environment and manage multiple priorities effectively.</li><li>Strong collaboration and interpersonal skills, with the ability to work effectively in cross-functional teams.</li><li>Willingness to work additional hours outside of regularly scheduled business hours, including weekends and holidays, to meet business needs.</li><li>Transportation Industry (Trucking or Trucking Brokerage) experience is plus</li><li>Bilingual (English/Korean) Prefer</li></ul> Additional Information All your information will be kept confidential according to EEO guidelines.

Woongjin, inc Interview Questions

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Woongjin, inc Interview Questions

Woongjin, inc Salaries by Position

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