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Statkraft Interview Questions

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?

<h3>Job Description</h3><div>Job Description<div>Company Description Quantitative AnalystLocation: On Site, San Francisco, CAWhy Statkraft?Statkraft has been making clean energy possible for over a century. That's what we offer. 125 years of unrivalled expertise in supplying the world with what it needs most. Because in the fight against climate change, we don't see renewable energy as part of the solution – we believe it must be the solution. With us, you'll shape a career that is truly forward-facing with many amazing opportunities and offerings to match.But there's more work to be done – that's why we need you to join us!Job Description Statkraft is the largest generator of renewable energy in Europe and an established participant within the various US environmental commodities markets. As part of the Origination department, the Origination team sources and manages a long-term portfolio of third-party renewable energy contracts. This portfolio usually consists of Power Purchase Agreements (PPAs) and long-term sales contracts with a variety of large customers and trading partners. Currently, the team is expanding its activities to the US power and renewables markets, specifically PJM & ERCOT. The team is responsible for the origination, pricing, structuring, and portfolio management of all bilateral power and Renewable Energy Credits (REC) deals.The role of Quantitative Analyst is ideal for someone who is always thinking about how to optimize, and loves working with data, solving problems, and making a measurable impact. As a Quantitative Analyst, you will:<ul><li>Help develop both a quantitative and fundamental view of the US power markets and related commodity markets.</li><li>Formulate and analyse new trading strategies, including hedging and optimisation strategies.</li><li>Provide analytical support with the scaling up of our portfolio of non-standard power contracts in the US markets, working effectively to value products and optimize the value of the portfolio.</li><li>Work with stakeholders throughout the organization to identify opportunities for leveraging data to drive business decisions.</li><li>Operate and drive the improvement of quantitative models and tools, used for our trading, hedging and optimisation activities.</li><li>Contribute to the team’s systematic usage of available datasets and integration of new data sources.</li><li>Conduct advanced quantitative analysis to derive insights from large and complex datasets, using statistical techniques, mathematical models, and machine learning algorithms.</li><li>Collaborate with team members with regards to maintaining and expanding a robust code base and quality documentation.</li><li>Proactively engage yourself in discussions to exchange knowledge and ideas with fellow analysts, traders, portfolio managers, originators, internal and external developers.</li><li>Be excited about the intersection of technology, business, and the renewable energy markets.</li></ul>Qualifications <ul><li>3+ years of experience within a quantitative focused role.</li><li>Bachelor’s or Master’s degree in mathematics, Statistics, Physics, Computer Science, or another highly quantitative field.</li><li>Advanced coding skills, advanced Python knowledge is a must.</li><li>Experience collaborating and building relationships with cross-functional stakeholders, influencing business decisions with data.</li><li>Highly analytical, data driven individual with advanced statistical & machine learning skills.</li><li>Inquisitiveness and a desire for continued self-improvement and development of new skills.</li><li>Ability to manage multiple tasks and thrive in a fast-paced team environment.</li><li>Strong attention to detail and ability to work independently, take initiative and be proactive in ambiguous situations.</li><li>Strong written and verbal communication skills.</li><li>Interest in energy markets, renewable energy, algorithms, and data science</li></ul> Additional Information What we Offer: A career with Statkraft is a career filled with purpose – meaning that every employee is not just making a living, they are making a real difference to the planet, our communities, and the future. Statkraft offers competitive terms of employment and a comprehensive benefits package that supports your well-being both at work and beyond. This includes healthcare coverage, wellness programs, and a 401(k)-retirement plan with company matching. We also provide a range of additional perks, such as generous paid time off, and professional development opportunities.</div></div>

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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