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Blackline 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

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?

Blackline Salaries by Position

Make Your Mark:: As a member of the Data & BI Engineering team you will primarily focus on advancing our Enterprise Data Platform to allow the organization to make data-driven decisions. The successful candidate will work closely with cross-functional teams to identify business requirements, design, and develop data models, data warehouses, and data visualization solutions that help support the organization's strategic goals. The Staff Data Engineer will work in a dynamic environment and will be required to stay current with the latest trends and technologies in the business intelligence field. The ideal candidate will be able to pick up business domain and internal process knowledge and leverage that knowledge to think strategically, communicate effectively, and manage multiple projects simultaneously. The team is also responsible for administering tools and platforms around reporting, analytics, and data visualization while promoting best practices. The role requires a strong combination of technical expertise, leadership skills, and a deep understanding of data engineering principles and best practices. We are looking for a driven, detail-oriented, and passionate engineer to come to join our team. You'll Get To:: <ul><li>Design and build infrastructure for optimal extraction, transformation, and loading (ETL) of data from a wide variety of data sources, including data identification, mapping, aggregation, conditioning, cleansing, and analyzing.</li><li>Identify, design, and implement internal process improvements: automating manual processes, optimizing data delivery, re-designing infrastructure for greater scalability, etc.</li><li>Collaborate with cross-functional teams, including data scientists, analysts, and business stakeholders, to understand data requirements and deliver valuable insights.</li><li>Effectively communicate complex technical concepts to non-technical audiences.</li><li>Maintain documentation and operational knowledge base.</li><li>Coach and technically train junior staff on design and development standards and best practices.</li><li>Design and implement data security and governance protocols to ensure the accuracy and reliability of data.</li></ul> What You'll Bring:: <ul><li>Bachelor's or Master's degree in Computer Science, Data Science, or a related field.</li><li>10+ years as a data engineer.</li><li>10+ years of experience using RDBMS, SQL, Python, Java, or other programming languages is a plus.</li><li>5+ years working experience with SQL and familiarity with Snowflake data warehouse, strong working knowledge in stored procedures, CTEs, and UDFs, RBAC.</li><li>Deep understanding of Data warehouse concepts, star, snowflake and dimensional modeling modeling and ETL/ELT best practices, scalability, complex process management, self-healing approaches, etc.</li><li>Strong working knowledge in at-least one of the big data architecture such as Lambda, Kappa and Hub and Spoke Architectures.</li><li>Excellent proficiency in Stream-processing systems like Storm, Spark-Streaming, kafka streaming and building real time data pipelines.</li><li>Proficiency in Container technologies: Docker, and Kubernetes.</li><li>Experience with modern Data Replication and Data processing tools such as Qlik, Fivetran.</li><li>Understanding of data security and privacy regulations, with experience implementing data security best practices.</li><li>Ability to define and manage user roles and permissions in Snowflake to ensure data security and privacy.</li><li>Experience in working in a startup-type environment, good team player, and can work independently with minimal supervision.</li><li>Proficient in managing large volumes of data.</li><li>Strong analytical and interpersonal skills, comfortable presenting complex ideas in simple terms.</li><li>Strong communication and collaboration skills, with the ability to work effectively with cross-functional teams.</li><li>Experience in providing technical support and troubleshooting for data-related issues.</li></ul> Were Even More Excited If You Have:: <ul><li>Experience with nosql systems such as mongodb, cockroachDb, apache cassandra etc.</li><li>Experience with cloud platforms such as AWS, Azure, or Google Cloud is a plus.</li><li>Significant experience with open source platforms and technologies.</li><li>Experience with data science and machine learning tools and technologies is a plus.</li></ul> Thrive at BlackLine Because You Are Joining:: <ul><li>A technology-based company with a sense of adventure and a vision for the future. Every door at BlackLine is open. Just bring your brains, your problem-solving skills, and be part of a winning team at the world's most trusted name in Finance Automation!</li><li>A culture that is kind, open, and accepting. It's a place where people can embrace what makes them unique, and the mix of cultural backgrounds and varying interests cultivates diverse thought and perspectives.</li><li>A culture where BlackLiner's continued growth and learning is empowered. BlackLine offers a wide variety of professional development seminars and inclusive affinity groups to celebrate and support our diversity.</li></ul>BlackLine is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity or expression, race, age, religious creed, national origin, physical or mental disability, ancestry, color, marital status, sexual orientation, military or veteran status, status as a victim of domestic violence, sexual assault or stalking, medical condition, genetic information, or any other protected class or category recognized by applicable equal employment opportunity or other similar laws.BlackLine recognizes that the ways we work and the workplace itself has shifted. We innovate in a workplace that optimizes a combination of virtual and in-person interactions to maximize collaboration and nurture our culture. Candidates who live within a reasonable commute to one of our offices will work in the office at least 2 days a week. Salary Range:: USD $147,000.00 - USD $196,000.00

Get to Know Us:

It's fun to work in a company where people truly believe in what they're doing!
At BlackLine, we're committed to bringing passion and customer focus to the business of enterprise applications. Since being founded in 2001, BlackLine has become a leading provider of cloud software that automates and controls the entire financial close process. Our vision is to modernize the finance and accounting function to enable greater operational effectiveness and agility, and we are committed to delivering innovative solutions and services to empower accounting and finance leaders around the world to achieve Modern Finance. Being a best-in-class SaaS Company, we understand that bringing in new ideas and innovative technology is mission critical. At BlackLine we are always working with new, cutting edge technology that encourages our teams to learn something new and expand their creativity and technical skillset that will accelerate their careers.
Work, Play and Grow at BlackLine!

Make Your Mark:

As a Staff Software Engineer, you will play a crucial role in building the next generation of BlackLine application. You will be driving innovation into our product suite by designing, developing, troubleshooting, maintaining, optimizing and scaling cloud-based applications and services. In addition to being a hands-on engineer, you will make important decisions regarding the design and architecture of the software and lead and mentor other engineers.
If you have a passion for delivering products that make a difference, are driven to make things better in all that you do and are eager to work in a collaborative agile environment where developers are dedicated to solving customer problems and innovating, we would love to talk to you.

You'll Get To:

Provide technical expertise in requirements analysis, design, effort estimation, development, testing and delivery of highly scalable and secure distributed backend services.
Work with product management, architects and other engineering teams to understand stated and unstated needs and turn them into functional and technical requirements. Maintain a strong sense of business value and return on investment in planning, design, and communication.
Lead technical design and architecture discussions and drive technical decisions while making appropriate trade-offs on technology, functionality, robustness, performance and extensibility.
Estimate the work scope and timelines, and consistently deliver on those commitments.
Implement, refine, and enforce software development techniques to ensure that the delivered features meet software integration, performance, security, and maintainability expectations.
Research, test, benchmark, and evaluate new tools and technologies, and recommend ways to implement them in product development.
Maintain high standards of software quality and technical excellence within the team by establishing good practices and writing clean, testable, maintainable, and secure code.
Contribute to a forward-thinking team of developers, acting as an agent of change and evangelist for a quality-first culture within the organization.
Mentor and coach team members to guide them to solutions on complex design issues and do peer code reviews.
Proactively identify issues, bottlenecks, gaps, or other areas of concerns or opportunities and work to either directly affect change, or advocate for that change.
Perform critical maintenance, deployment, and release support activities, including occasional off-hours support.

What You'll Bring:

Bachelor’s degree in Mathematics, Computer Science or related disciplines.
10+ years of professional experience in building Web scale highly available multi-tenant SaaS with focus on backend platform, frameworks, RESTful APIs and microservices.
2+ years of experience with a public cloud (AWS, Azure, or GCP) and solid understanding of cloud-native services. Extensive experience with SQL, relational database design, SQL query optimization.
Technical/Specialized Knowledge, Skills, and Abilities:
Expert in C#
Fluent in MSSQL, SQL, data modeling and transactional flows.
Fluent in Javascript, ReactJS framework and/or Angular framework.
Specific things they should be knowledge about: REST APIs, ASP.NET Core, Asynchronous programming, Multithreading / concurrency, Distributed systems.
A solid computer science foundation including data structures, algorithms, and design patterns, with a proven track record of writing high concurrency, multi-threaded, secure, scalable code.
Proven experience in working with API gateway services such As Apigee, identity management, authentication and authorization.
Working knowledge of event driven architecture and experience with a messaging service such as Kafka.
Superior analytical, problem-solving and system level performance analysis abilities.
Excellent written and verbal communication skills.
Adaptable team player with strong collaboration skills and a focus on results and value delivery.
Experience with ORM frameworks such as Entity Framework or Hibernate.
Experience working in an Agile development environment.
Passion for engineering excellence through automation, unit testing, and process improvements.

We’re Even More Excited If You Have:

Experience with continuous delivery and infrastructure as code.
Good knowledge of internet security issues in software design and code.

Thrive at BlackLine Because You Are Joining:

A technology-based company with a sense of adventure and a vision for the future. Every door at BlackLine is open. Just bring your brains, your problem-solving skills, and be part of a winning team at the world's most trusted name in Finance Automation!
A culture that is kind, open, and accepting. It's a place where people can embrace what makes them unique, and the mix of cultural backgrounds and varying interests cultivates diverse thought and perspectives.
A culture where BlackLiner's continued growth and learning is empowered. BlackLine offers a wide variety of professional development seminars and inclusive affinity groups to celebrate and support our diversity.
BlackLine is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity or expression, race, ethnicity, age, religious creed, national origin, physical or mental disability, ancestry, color, marital status, sexual orientation, military or veteran status, status as a victim of domestic violence, sexual assault or stalking, medical condition, genetic information, or any other protected class or category recognized by applicable equal employment opportunity or other similar laws.
BlackLine recognizes that the ways we work and the workplace itself has shifted. We innovate in a workplace that optimizes a combination of virtual and in-person interactions to maximize collaboration and nurture our culture. Candidates who live within a reasonable commute to one of our offices will work in the office at least 2 days a week.

Salary Range:

USD $147,000.00 - USD $196,000.00

Pay Transparency Statement:

Placement within this range depends upon several factors, including the applicant's prior relevant job experience, skill set, and geographic location. In addition to base pay, BlackLine also offers short-term and long-term incentive programs, based on eligibility, along with a robust offering of benefit and wellness plans.
BlackLine is committed to creating an inclusive and accessible experience for all candidates. If you require a reasonable accommodation that would better enable your success during the application or interview process, please complete this form.

#J-18808-Ljbffr

Get to Know Us: It's fun to work in a company where people truly believe in what they're doing! At BlackLine, we're committed to bringing passion and customer focus to the business of enterprise applications. Since being founded in 2001, BlackLine has become a leading provider of cloud software that automates and controls the entire financial close process. Our vision is to modernize the finance and accounting function to enable greater operational effectiveness and agility, and we are committed to delivering innovative solutions and services to empower accounting and finance leaders around the world to achieve Modern Finance. Being a best-in-class SaaS Company, we understand that bringing in new ideas and innovative technology is mission critical. At BlackLine we are always working with new, cutting edge technology that encourages our teams to learn something new and expand their creativity and technical skillset that will accelerate their careers. Work, Play and Grow at BlackLine! Make Your Mark: The Business Analyst for Intercompany works closely with all members of the Intercompany Pillar team to report and monitor attainment of the global plan and KPIs. They will support the development of analytics, reporting and key insights to properly inform Pillar Leadership decision making. The Business Analyst will be expected to develop ad-hoc reporting in support of go-to market strategies and initiatives. They will be expected to work cross-functionally with various stakeholders across BlackLine, including Marketing, Sales, Presales, Sales Ops and Finance to ensure consistency across tools, content, enablement, forecasting and measurement frameworks. In addition, the Business Analyst will support the growth and scale of business operations and drive process improvements. This person must possess exceptional analytical skills and be a proficient communicator. You'll Get To: Global Plan Attainment <ul> <li>Contribute to monitoring of the global plan associated with the successful attainment of pillar sales targets and the cadence for reporting progress of the plan to Pillar Leadership and Executive Management. </li> </ul><ul> <li>Continuously assess the plan, generate KPIs and other data insights, highlight business growth and risks, and recommend necessary changes to calibrate the plan and operations for success </li> </ul>Reporting and Forecasting <ul> <li>Collaborate with Finance/GTM Operations to ensure real-time visibility into the goals, progress, and obstacles of the Intercompany Pillar performance. </li> </ul><ul> <li>Assist in defining the operational processes and measurement frameworks required to measure successful outcomes against BlackLine OKRs and Intercompany Pillar KPIs. </li> </ul><ul> <li>Continuously monitor and analyze key metrics, including but not limited to business outlook, deal forecasts, win/loss analysis, and pipeline growth. </li> </ul><ul> <li>Leverage new and existing measurement frameworks to derive insights and recommend solutions for improvement where necessary across all relevant stakeholder teams. </li> </ul>Business Process Optimization <ul> <li>Collaborate with key stakeholder to analyze and form a solid understanding of existing process and business needs </li> </ul><ul> <li>Work with IT and other departments to develop, design and implement solutions </li> </ul>Project Management <ul><li>Provide project management support, including tracking of progress, timelines and milestones for high priority Intercompany Pillar initiatives </li> </ul><ul> <li>Provide routine and ad hoc report outs for Pillar Leadership and Executive Management </li></ul> What You'll Bring: <ul><li> <ul><li>Bachelor's degree in Business, Business Administration or a related field </li> </ul><ul> <li>Strong analytical and problem-solving skills </li> </ul><ul> <li>Excellent communication and interpersonal skills </li> </ul><ul> <li>Experience using measurement frameworks to analyze and report on business performance </li> </ul><ul> <li>Proficiency in Microsoft Office Suite (i.e. Excel, PowerPoint) </li> </ul><ul> <li>Experience with Tableau is a plus </li> </ul></li></ul> Thrive at BlackLine Because You Are Joining: <ul><li>A technology-based company with a sense of adventure and a vision for the future. Every door at BlackLine is open. Just bring your brains, your problem-solving skills, and be part of a winning team at the world's most trusted name in Finance Automation! </li><li>A culture that is kind, open, and accepting. It's a place where people can embrace what makes them unique, and the mix of cultural backgrounds and varying interests cultivates diverse thought and perspectives. </li><li>A culture where BlackLiner's continued growth and learning is empowered. BlackLine offers a wide variety of professional development seminars and inclusive affinity groups to celebrate and support our diversity. </li></ul> BlackLine is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity or expression, race, ethnicity, age, religious creed, national origin, physical or mental disability, ancestry, color, marital status, sexual orientation, military or veteran status, status as a victim of domestic violence, sexual assault or stalking, medical condition, genetic information, or any other protected class or category recognized by applicable equal employment opportunity or other similar laws. BlackLine recognizes that the ways we work and the workplace itself has shifted. We innovate in a workplace that optimizes a combination of virtual and in-person interactions to maximize collaboration and nurture our culture. Candidates who live within a reasonable commute to one of our offices will work in the office at least 2 days a week. Salary Range: USD $93,000.00 - USD $124,000.00 Pay Transparency Statement: Placement within this range depends upon several factors, including the applicant's prior relevant job experience, skill set, and geographic location. In addition to base pay, BlackLine also offers short-term and long-term incentive programs, based on eligibility, along with a robust offering of benefit and wellness plans. BlackLine is committed to creating an inclusive and accessible experience for all candidates. If you require a reasonable accommodation that would better enable your success during the application or interview process, please complete this form.

Make Your Mark:: As a Senior Software Engineer, you will play a crucial role in delivering high quality releases to our customers by designing, developing, troubleshooting, maintaining, optimizing and scaling BlackLines cloud-based backend services and driving innovation into our product suite. In this role, you will research, test, benchmark and evaluate new technologies, propose scaling solutions, collaborate with other teams to define and build new features, optimize existing features while writing elegant code, coaching and mentoring less experienced software engineers and communicating with people at all levels. Your attention to detail, tenacity, and creative problem-solving and thinking ahead will directly impact the company's success, as well as the success of your peers across the organization. If you have a passion for delivering products that make a difference, are driven to make things better in all that you do and are eager to work in a collaborative agile environment where Developers are dedicated to solving customer problems and innovating, then we want to talk to you. You'll Get To:: <ul><li>Provide technical expertise and leadership in the design, development, and delivery of BlackLines products, while adhering to timelines, coding standards, requirements, and quality. </li><li>Architect, design, develop, test, troubleshoot, debug, optimize, scale, maintain and improve software applications, driving the delivery of high quality value and features to BlackLines customers. Develop functional and technical specifications, and test plans. Review others code. Develop and document functional and technical requirements. Collaborate with other team members and other teams on all of the above. </li><li>Design and communicate coding standards, architectural plans, solve complex design and architectural problems, create robust architectural solutions. </li><li>Implement, refine, and enforce software development techniques to ensure that delivered features meet software integration, performance, security, and maintainability expectations. </li><li>Research, test, benchmark, and evaluate new tools and technologies, and recommend ways to implement them in product development. </li><li>Maintain high standards of software quality and technical excellence within the team by establishing good practices and habits and writing clean, testable, maintainable, and secure code. </li><li>Inspire a forward-thinking team of developers, acting as an agent of change and evangelist for a quality-first culture within the organization. Mentor and coach team members and guide them to solutions on complex design issues. </li><li>Proactively identify issues, bottlenecks, gaps, or other areas of concern or opportunity and work to either directly affect change, or advocate for that change by working with peers and leadership to build consensus and take action. </li><li>Perform critical maintenance, deployment, and release support activities, including occasional off-hours support. </li><li>Adaptable team player with strong collaboration skills and a focus on results and value delivery. </li><li>Passion for engineering excellence, curiosity and demonstrated ability of continuous learning. </li></ul> What You'll Bring:: <ul><li>8+ Years of Experience in Related Field.</li><li>3+ Years of experience in security authentication protocols like SAML, OIDC.</li><li>5+ years of experience with software development in general purpose programming languages including but not limited to: Java, Ruby.</li><li>5+ years of hands-on experience in building Web Applications, SaaS products, and RESTful APIs. </li><li>3+ years of experience with Security (OKTA, MFA, SSO, etc).</li><li>A solid computer science foundation including data structures, algorithms, and design patterns, with a proven track record of software design and architecture of complex systems. </li><li>Experience in service-oriented architecture and aspect-oriented programming.</li><li>Experience as a technical influencer for highly scalable distributed system designs. </li><li>Advanced knowledge of SQL, including stored procedures, data models, and transactional flows. </li><li>Fluent in SQL, data modeling and transactional flows. </li><li>Experience with multi-threading and concurrency. </li><li>Knowledge of Web Application Authentication and Authorization concept as well as security recommendations.</li><li>Adaptable team player with strong collaboration skills and a focus on results and value delivery. </li><li>Passion for engineering excellence through automation, unit testing, and process improvements. </li><li>Superior analytical and problem-solving abilities. </li><li>Excellent written and verbal communication skills.</li></ul> Were Even More Excited If You Have:: <ul><li>Good knowledge of internet security issues in software design and code. </li><li>Experience with ERP systems like MS Dynamics-365, Oracle, NetSuite, Intacct is a plus.</li><li>Experience with open source tools. </li><li>Experience with public cloud architectures (Azure, ASW or GCP) and cloud native services. </li><li>Experience designing and scaling high performance systems. </li><li>Experience with container management solutions like Mesos, Kubernetes or Nomad. </li><li>Experience with API gateway, identity management, authentication, messaging platforms (e.g: Kafka, SQS, RabbitMQ), workflow orchestration tools, job scheduling and search. </li><li>FinTech or Financial services domain background. </li><li>Prior working experience in Scrum, or other Agile development methodologies, is preferred. </li><li>Experience with front-end technologies (HTML, JavaScript, CSS, JavaScript Frameworks, etc.). </li><li>Experience with data integration and middleware software tools.</li></ul> Thrive at BlackLine Because You Are Joining:: <ul><li>A technology-based company with a sense of adventure and a vision for the future. Every door at BlackLine is open. Just bring your brains, your problem-solving skills, and be part of a winning team at the world's most trusted name in Finance Automation!</li><li>A culture that is kind, open, and accepting. It's a place where people can embrace what makes them unique, and the mix of cultural backgrounds and varying interests cultivates diverse thought and perspectives.</li><li>A culture where BlackLiner's continued growth and learning is empowered. BlackLine offers a wide variety of professional development seminars and inclusive affinity groups to celebrate and support our diversity.</li></ul>BlackLine is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity or expression, race, age, religious creed, national origin, physical or mental disability, ancestry, color, marital status, sexual orientation, military or veteran status, status as a victim of domestic violence, sexual assault or stalking, medical condition, genetic information, or any other protected class or category recognized by applicable equal employment opportunity or other similar laws.BlackLine recognizes that the ways we work and the workplace itself has shifted. We innovate in a workplace that optimizes a combination of virtual and in-person interactions to maximize collaboration and nurture our culture. Candidates who live within a reasonable commute to one of our offices will work in the office at least 2 days a week. Salary Range:: USD $145,000.00 - USD $193,000.00

Blackline Interview Questions

Blackline Interview Guides

Blackline Interview Questions

Blackline Salaries by Position

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