Data Scientist | Senior | Threat Intelligence team

The world’s most advanced VPN, and a whole lot more. 
If you’re a curious problem-solver who carves their own path, join the team behind Threat Protection Pro, the NordLynx protocol, and the fastest VPN on the planet—tools that put privacy, security, and control back in people’s hands.
Your impact? Helping millions take back control of their online security, privacy, and data. 
Our Threat Intelligence team is dedicated to providing accurate and timely information on potential threats to our products. Our team of skilled professionals from various fields, including Data Science, Malware Research, Development, and Privacy, is focused on achieving a common goal by utilizing feeds, heuristics, algorithms, and machine learning.

Main Responsibilities

• Design solutions to problems while researching, debugging, and analyzing data using different data sources;
• Take ownership of projects from idea to completion, demonstrating the ability to oversee all aspects of the project lifecycle, including planning, execution, monitoring, and delivery;
• Create scalable & reliable code, as well as write documentation for the parts that you’ve contributed to or explored;
• Research, develop & deliver data science solutions to production;
• Develops custom ML metrics that would help to monitor model performance;
• Analyze validation/testing results, explain them, and improve model design accordingly;
• Plan deliverables with team members, maintain constant communication about progress, and engage in mentoring and knowledge sharing;
• Conduct code reviews and suggest improvements to current solutions.

Core Requirements

• At least 5 years of experience in data science or mathematical modeling;
• Solid knowledge of statistics (e.g., Monte Carlo, hypothesis testing, bootstrap, Bayesian inference);
• In-depth knowledge and hands-on experience in machine learning algorithms: linear regression, random forest, gradient boosted trees, neural networks, k-means, etc.;
• Proficient in deep learning methodologies with a comprehensive understanding and extensive practical experience in their application;
• Proficiency in Python and hands-on experience of the PyData stack (e.g., Pandas, Numpy, MatPlotLib, Spark) for analytics/machine learning;
• Experience in cloud services (preferably AWS );
• Excellent problem-solving skills (researching, debugging, instrumentation);
• Ability to break down and prioritize work, make informed decisions about which tools and algorithms to use for specific problems;
• Willingness to explore, grow, and mentor others while keeping up with the latest innovations in data science.

Bonus Points For

• Understanding of networking and internet protocols;
• Ability to highlight potential problems in machine learning solutions at early stages;
• Released & maintained machine learning services in production.

Tools Your Will Use

• Pyspark;
• Python;
• Jupyter notebook;
• AWS.

Salary Range

• Gross Salary 17600 - 28200 PLN/Month.

What We Offer
Innovate with industry leadersWork alongside global experts to build world-leading cybersecurity tools, impacting millions of users around the world.
Learn & growBoost your skills via our extensive training programs (online and offline) & other resources. Benefit from mentorship and career-switch opportunities to grow within the company. 
Hybrid workEnjoy the flexibility with 3 office days and working from home for the remaining 2.
Work from anywhereRecharge with a change of scenery – choose work from any location when you feel a need to power your creativity and drive. 
Physical well-beingFuel your active lifestyle with online workouts led by our Physical Well-Being experts. 
Mental & emotional healthNurture your mind with free psychologist consultations, dedicated mental health events, and premium access to top-rated wellness apps like Calm, Headspace, and Mindletic.
Premium healthcareReceive private health insurance giving you peace of mind for your health needs.
Extra days offEnjoy additional vacation days off as you grow with us. Plus, get extra days for sick leave, special occasions, or parenting needs. Joyful moments – special treatsCelebrate life’s big moments with special gifts from us on your birthday, anniversary, and other major events, such as weddings or the arrival of a new family member. 
Company events & team-buildingExperience iconic Nord Security celebrations, team-buildings, and knowledge-sharing events, nurturing bonds that fuel our success.
WorkationEmbark on a legendary company getaway abroad, filled with exciting activities, live concerts, engaging workshops, and epic time together.
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