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Lead Data Scientist (f/m/d)

ZEAL Network SE is a dynamic, international group of companies that has been creating exciting and innovative lottery experiences for over 20 years. As Germany’s largest provider of online lotteries through our brands LOTTO24 and Tipp24, and a trusted partner of Spain’s ONCE, the second-largest national lottery, we’re shaping the future of the lottery industry. We are passionate about driving innovation, as demonstrated by our newest brands, Freiheit+ and Traumhausverlosung, which bring fresh and exciting dreams to life. Additionally, through ZEAL Ventures, we invest in inspiring e-commerce start-ups like Omaze and DAYMADE, fueling fresh ideas and opportunities.

Our team of 250+ professionals from diverse backgrounds is united by a visionary mindset, a passion for collaboration, and a commitment to inspire dreams. At ZEAL, we empower our people to think ambitiously and work together toward a shared purpose: helping people imagine and achieve their aspirations.

Your tasks:

  • Drive and develop a data culture, delivering analyses, but also checking for data consistency and finding patterns.

  • Functionally lead and mentor Data Scientists, ensuring code reviews, enforcing tooling, and introducing new Data Science techniques and ways of working.

  • Identify and refine strategic projects, working with the Team Lead to define scope and deliverables.

  • Own high-value projects, break them into tasks, onboard the team, and ensure outcomes and stakeholder communication.

  • Support the Team Lead by managing time allocation for sub-team members, balancing tasks, projects, and learning.

  • Build relationships with cross-functional teams and stakeholders and communicate insights to leadership.

  • Ensure sustainability of projects through documentation, knowledge sharing, and code access.

  • Collaborate with other Data teams and facilitate timely involvement in requirements.

  • Experiment with ML for analytics and conduct A/B testing for actionable insights.

  

What you offer us: 

  • Experience in providing agile data solutions in a start-up environment

  • You can perform complex analyses, including A/B tests, in either Python or R.

  • Experience in some of the following: personalization, Google Analytics, SQL, Shiny Server, Tableau and MS Automate.

  • Experience managing data projects, gathering requirements, and ensuring delivery.

  • First leadership experience in Data Science, including mentoring and coordination.

  • Knowledge of project sustainability, documentation, and code accessibility.

  • You are able to find pragmatic solutions and adapt to change quickly.

  • Familiarity with agile environments, e-commerce metrics, and/or cohort analysis.

  • You enjoy expanding your Data Science, ML and programming toolsets, bringing new knowledge into the team.

  • Excellent communication and collaboration skills in English.

 

What we offer:

  • State-of-the-art technologies and an agile environment (Check our Tech Radar: https://lotto24.github.io/tech-radar/)

  • A modern, dynamic culture grounded in the success of a leading-edge e-commerce company.

  • A talented team of ambitious, like-minded colleagues where your knowledge and ideas truly make an impact.

  • Ongoing personal growth, supported by our product-focused organization and an annual development budget of €1,500 to invest in your professional development.

  • Trust and autonomy, no micromanagement, just confidence in your ability to deliver and excel.

  • Flexible work options with a hybrid setup focused on results, offering the freedom to work where and how you’re most productive.

  • Generous time off: enjoy unlimited vacation days in addition to your 30-day vacation allowance, with the opportunity for workations abroad using our WorkFlex tool.

  • Monthly mobility allowance of €20 to use on the mobility option of your choice (e.g., the Deutschlandticket), plus access to a company bike leasing program.

  • Company pension scheme, provided in partnership with Degura, to support your future financial security.

  • Subsidized EGYM WELLPASS membership, with a contribution of only €25 per month, giving you access to a wide range of gyms and sports options across Germany.

  • Quarterly company events where we gather to celebrate, along with regular team activities and informal gathering, a favorite being our Healthy Tuesday lunches or Pizza Thursdays in the office!

Not ticking every box or think you’ve got that unique set of skills we haven’t realised we need? Get in touch anyway; we’re always looking to add great people!

What You Should Know About Lead Data Scientist (f/m/d), Zeal Network

Are you ready to take on a transformative role as a Lead Data Scientist at ZEAL Network SE in Hamburg? At ZEAL, we are reimagining the lottery landscape and you're invited to lead the charge. With over 20 years of innovative experience in the online lottery sector through brands like LOTTO24 and Tipp24, we're not just a company; we're a community passionate about turning dreams into reality. As our Lead Data Scientist, you'll spearhead a data-driven culture, mentor fellow Data Scientists, and leverage your analytical prowess to uncover essential insights. You'll dive into exciting projects, conducting complex analyses, A/B tests, and collaborating with diverse teams to ensure our strategic initiatives flourish. We value adaptability and pragmatic solutions, especially within our agile, start-up-like environment. The perfect candidate will have experience with data projects, an eagerness to grow alongside us, and a knack for communication. Here at ZEAL, we believe in people – that means providing you with the resources, flexibility, and encouragement to thrive. From unlimited vacation days to an annual development budget, you'll have the freedom to craft a career that suits your aspirations. Imagine working with a diverse team and contributing to technologies that shape the future of lotteries! If you’re eager to lead, inspire and innovate, we can’t wait to meet you.

Frequently Asked Questions (FAQs) for Lead Data Scientist (f/m/d) Role at Zeal Network
What are the key responsibilities of a Lead Data Scientist at ZEAL Network SE?

As a Lead Data Scientist at ZEAL Network SE, you will drive and develop a vibrant data culture while mentoring fellow Data Scientists. Additionally, you will oversee high-value projects, perform complex analyses using tools like Python or R, and collaborate with cross-functional teams, ensuring that the strategic goals align with stakeholder expectations.

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What qualifications are needed to become a Lead Data Scientist at ZEAL Network SE?

To qualify as a Lead Data Scientist at ZEAL Network SE, you should possess experience in agile data solutions, strong analytical skills for performing A/B tests, and familiarity with tools such as SQL, Tableau, and more. Leadership experience in managing data projects and mentoring is also essential, alongside outstanding communication abilities in English.

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What kind of projects will a Lead Data Scientist at ZEAL Network SE work on?

In the role of Lead Data Scientist at ZEAL Network SE, you will own high-value projects that require breaking tasks down, onboarding your team, and ensuring that project outcomes align with stakeholder communications. You'll also have the opportunity to experiment with machine learning and conduct sustainable projects that inspire innovative solutions.

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How does ZEAL Network SE support the professional development of its Lead Data Scientists?

ZEAL Network SE is dedicated to your growth and offers an annual development budget of €1,500 for your professional training. We also foster a trust-based culture with flexible work options that allow you to pursue continuous learning tailored to your interests and career goals.

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What work-life balance benefits does ZEAL Network SE provide for Lead Data Scientists?

ZEAL Network SE prides itself on providing a balanced work-life environment, offering unlimited vacation days, the flexibility to work remotely, and a company culture that celebrates team achievements with regular gatherings. Furthermore, our generous allowances for mobility and wellness programs ensure you have what you need for a fulfilling work-life experience.

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Common Interview Questions for Lead Data Scientist (f/m/d)
How do you approach defining the scope and deliverables for a data project?

When defining the scope and deliverables, I start by closely collaborating with stakeholders to gather requirements and understand their objectives. From there, I break the project into manageable tasks while considering the team’s strengths and resources to ensure clarity and accountability throughout the project lifecycle.

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Can you describe a complex analysis you've conducted in Python or R?

Absolutely! In my previous role, I conducted an A/B test analysis to compare user engagement across different marketing strategies. Using Python, I employed statistical models to analyze the results, adjusting for variables to ensure the integrity of the findings, which ultimately informed our marketing strategy.

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What strategies do you use to mentor junior Data Scientists?

To mentor junior Data Scientists effectively, I focus on providing constructive feedback through regular code reviews, encouraging knowledge sharing through paired programming sessions, and fostering an environment where questions are welcomed. I also guide them in developing their analytical skills by assigning projects that align with their interests and growth areas.

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Describe your experience with machine learning and how you’ve applied it in your projects.

I've applied machine learning in several projects, including predictive modeling for user behavior. My approach typically involves selecting the right algorithms, preprocessing data to improve model accuracy, and iterating based on insights derived from A/B testing to validate model effectiveness before deployment.

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How do you ensure project sustainability in your data initiatives?

Ensuring project sustainability involves thorough documentation and establishing best practices for knowledge sharing. I emphasize creating accessible resources and conducting training sessions for team members to foster a culture of continuous learning and project longevity.

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How do you keep up with the latest trends in data science and analytics?

To stay updated, I regularly participate in online forums, attend industry conferences, and engage with professional communities. Additionally, I subscribe to relevant journals and maintain a routine of practical experimentation with new techniques and technologies.

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What role does communication play in your work as a Data Scientist?

Effective communication is vital in my role as a Data Scientist. It helps bridge the gap between technical analysis and stakeholder understanding, enabling me to present insights in a clear, actionable manner. I make it a priority to tailor my communication style to my audience, fostering collaboration and informed decision-making.

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Can you discuss your experience with A/B testing?

Certainly! I have extensive experience conducting A/B testing to compare user experiences on different platforms. I follow a systematic approach, including hypothesis formulation, experiment design, data collection, and statistical analysis to draw meaningful conclusions that guide product enhancements.

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How do you manage changes in project scope or shifting priorities?

I approach changes in project scope with an agile mindset, ensuring open communication with stakeholders to reassess timelines and deliverables. Flexibility is key, and I prioritize maintaining alignment with overarching goals while adjusting resources as needed to accommodate any changes.

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What tools and technologies are you most comfortable using in data science projects?

I'm most comfortable using Python and R for analytical tasks, alongside SQL for database management. Additionally, I have experience with visualization tools like Tableau and Shiny Server for presenting findings. I’m also open to exploring and adopting new tools that can enhance my workflow and contribute to project success.

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EMPLOYMENT TYPE
Full-time, hybrid
DATE POSTED
December 21, 2024

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