Staff Software Engineer - Python & Threat Intelligence

About the Role Nord Security, the company behind NordVPN, is searching for a Senior Threat Intelligence Researcher in Warsaw. This role centers on advancing the security and privacy of millions of users through products like Threat Protection Pro and the NordLynx protocol. What You'll Do Lead research efforts to identify and analyze emerging threats to Nord Security products. Work closely with a multidisciplinary team that includes Data Science, Malware Research, Development, and Privacy specialists. Contribute to the development and improvement of threat intelligence feeds, heuristics, algorithms, and machine learning models. Share actionable insights with product, engineering, and public-facing teams to strengthen threat protection capabilities. Help shape the evolution of NordVPN’s Threat Protection features by setting high standards for research quality and collaboration. The Team The Threat Intelligence group brings together experts from several disciplines. The team focuses on delivering accurate, timely information about potential threats using a mix of data-driven approaches and technical expertise. Collaboration is key, team members combine their skills to protect user privacy and security at scale. Location This position is based in Warsaw.

NordVPN, part of Nord Security, develops VPN services and privacy tools designed to keep users secure and in control. The Threat Intelligence team combines data science, malware research, and privacy expertise to monitor and analyze new online threats as they emerge. This Senior Threat Intelligence Researcher role is based in Warsaw. The position plays a key part in shaping NordVPN’s Threat Protection features, with a direct impact on the online safety and privacy of millions of users. What you will do Serve as the lead expert on Threat Intelligence topics, guiding research into areas such as phishing and online scams. Turn research findings into actionable strategies that strengthen the Threat Protection product. Collaborate with Marketing and PR to communicate cybersecurity trends through clear, data-driven stories. Publish concise, evidence-based updates on significant threats and safety advice across social media. Contribute to educational video content, including scriptwriting and occasional on-camera work. Work alongside Data Science and Engineering teams to advance machine learning applications in Threat Intelligence. Assess and introduce new tools, data sources, and workflows to boost team performance. Mentor junior researchers and support their professional development. Team and collaboration The Threat Intelligence team values a range of skills and close cooperation. Researchers collaborate to deliver actionable intelligence and help NordVPN protect user privacy and security.

Join the forefront of online security with the world's leading VPN provider.If you are an inquisitive problem-solver eager to innovate, become a part of the team spearheading Threat Protection Pro, the NordLynx protocol, and the fastest VPN available—empowering users with enhanced privacy, security, and control over their data.Your contribution? Enabling millions to reclaim their online security, privacy, and data.Our Threat Intelligence team is committed to delivering precise and timely insights regarding potential threats to our products. Our diverse team of experts spans various disciplines, including Data Science, Malware Research, Development, and Privacy, all working towards a unified objective through the application of data feeds, heuristics, algorithms, and machine learning.Key ResponsibilitiesDesign and implement solutions to complex problems while conducting research, debugging, and data analysis across various sources;Create scalable, reliable code and document your contributions and explorations;Research, develop, and deploy data science solutions to production;Develop custom machine learning metrics to monitor model performance;Analyze validation/testing outcomes, provide explanations, and refine model designs accordingly;Collaborate with team members to plan deliverables;Perform code reviews to ensure quality;Maintain open communication regarding project progress;Mentor colleagues and share knowledge within the team;Propose enhancements to existing solutions.Core QualificationsDemonstrated experience in data science and/or mathematical modeling;Strong understanding of statistical methods (e.g., Monte Carlo, hypothesis testing, bootstrap, Bayesian inference);Extensive knowledge and practical experience with machine learning algorithms: linear regression, random forest, gradient boosted trees, neural networks, k-means, etc.;Proficiency in Python and hands-on experience with the PyData stack (e.g., Pandas, NumPy, etc.);

Join our innovative Threat Intelligence team at Nordsec as a Senior Data Scientist. In this pivotal role, you will analyze complex data sets to enhance our cybersecurity measures and protect our clients from emerging threats. You will leverage advanced analytical techniques and machine learning algorithms to derive insights that inform strategic decisions.

Join the forefront of online security with Nord Security!Are you an innovative backend engineer eager to tackle complex challenges? Become a pivotal part of our Threat Protection Pro team, which powers the renowned NordLynx protocol and is behind the fastest VPN globally. Our mission is to empower users by restoring their privacy, security, and control over their online experiences.Your contributions will: Help millions regain confidence in their online security and privacy.About Threat ProtectionAs cyber threats like viruses, Trojans, and spyware grow, ensuring a safe online experience is essential. Our dedicated Threat Protection team is committed to developing robust software solutions that safeguard our customers. If you thrive on creating scalable, secure code and tackling high-level architectural challenges from the ground up, you’ve found your next adventure!

Join the forefront of digital security with the world's most advanced VPN.Are you a curious problem-solver eager to make a difference? Become part of the team that powers Threat Protection Pro, the NordLynx protocol, and the fastest VPN globally—innovative tools designed to restore privacy, security, and control to users everywhere.Your impact? Empower millions of users to reclaim their online security, privacy, and data.About Threat ProtectionIn an age of viruses, Trojans, worms, spyware, and other malware, ensuring online safety can be challenging. Our Threat Protection team is dedicated to solving these issues by developing robust software that safeguards our customers. You'll create scalable code capable of handling high volumes, security concerns, and complex architectures, all built from the ground up. If this sounds like the challenge you’ve been seeking, read on!Main ResponsibilitiesDesign and develop distributed microservices that shield millions from malware threats;Prioritize delivering high-quality code with a focus on scalability and security;Collaborate with a passionate team of developers to build and maintain our services using Golang;Take ownership of architecture, design, development, and deployment initiatives with respect and commitment.Core RequirementsExperience with distributed technologies and familiarity with NoSQL databases, particularly Cassandra or Kafka;Strong grasp of system design, with knowledge of applicable patterns;Passion for creating anti-virus solutions and enhancing online safety where your contributions will have a direct impact;Adept in backend architecture and technologies, willing to engage in discussions and share ideas; if you can deliver scalable and stable code, we want to connect with you;A collaborative spirit with a love for discussing, rethinking, and redesigning ideas that foster shared success within your team and the company.

JetBrains is seeking a Senior Machine Learning Researcher to focus on Spectrum. This position centers on applying machine learning expertise to improve product features and contribute to ongoing research efforts. Role overview This role involves working with a team dedicated to advancing the capabilities of Spectrum. The Senior Machine Learning Researcher will use their knowledge to influence product direction and participate in research projects that drive innovation. Key responsibilities Apply machine learning methods to enhance Spectrum's technology. Contribute to research initiatives that inform future product development. Share insights and provide leadership within the research team. Locations This position is available in Amsterdam, Belgrade, Berlin, Limassol, Madrid, Munich, Paphos, Prague, Warsaw, and Yerevan.

Creatoriq is hiring a Senior Data Analyst for the Strategic Intelligence team in Warsaw. This position plays a key role in guiding business decisions through careful analysis and creative problem-solving. Role overview The Senior Data Analyst focuses on interpreting large and complex datasets, providing insights that influence company strategy. The work centers on transforming raw data into clear, actionable recommendations for the business. What you will do Analyze and interpret data to support strategic business decisions Develop solutions to address business challenges using data-driven approaches Present findings in a way that is clear and useful for stakeholders Requirements Strong analytical mindset Experience with data manipulation Ability to turn complex datasets into actionable insights

Location: Poland About Us:RTB House is a pioneering global technology company specializing in innovative marketing solutions for leading brands and advertising agencies around the globe. Our proprietary ad-buying engine stands out as the first in the world to utilize Deep Learning algorithms entirely, empowering advertisers to achieve exceptional results and meet their objectives throughout every stage of the marketing funnel. Your Role:As a Senior Technical Researcher/Engineer on our AdTech Technical Research Team, you will be instrumental in investigating and mastering the latest advancements in the advertising technology landscape. Your responsibilities will include conducting comprehensive research, testing novel technologies, and collaborating across various teams to determine their viability for integration into our systems. This position requires a unique combination of programming, research, and analytical skills to assess the effectiveness and practicality of diverse ad tech solutions. Qualifications: Minimum of 5 years of experience in a research or engineering role. Technical Proficiency: Strong programming skills with the ability to comprehend large-scale and intricate systems and architectures. Curiosity and Willingness to Learn: Eagerness to embrace new challenges and technologies while continuously enhancing knowledge in the ad tech sector. Independence & Proactiveness: Capability to take initiative and make informed decisions with minimal oversight while upholding high standards. Goal-Oriented Mindset: Focused on achieving specific project objectives and adaptable in a fast-paced environment. Collaborative Communication: Proficient in effectively sharing knowledge and working alongside team members and external partners (e.g., major browser vendors, W3C, GitHub). Prototyping Skills: Ability to develop Proof of Concepts (PoCs) and experimental solutions to evaluate their effectiveness. Technologies & Projects You May Work With: Python, Java, Scala, TypeScript/JavaScript PyTorch, NumPy, Pandas Jupyter Notebooks BigQuery, GCP Browser Engines

CD Projekt Red is seeking a Senior User Experience Researcher in Warsaw. This position centers on improving the quality of gaming experiences by gathering insights that inform design decisions. The team values both creativity and collaboration, aiming to deliver engaging stories and immersive environments to players. Role overview The Senior User Experience Researcher will focus on understanding player behaviors and preferences. Insights from research will help guide the development of new features and refine existing gameplay elements. Collaboration This role works closely with designers, writers, and other team members to ensure that each project meets the studio’s standards for narrative depth and world-building. Impact Your work will contribute directly to the studio’s goal of creating memorable and captivating gaming experiences for a global audience.

Join NielsenIQ as a Research Analyst and play a pivotal role in driving data-driven insights that shape strategic business decisions. In this dynamic position, you will conduct thorough market analysis, compile reports, and collaborate with cross-functional teams to deliver actionable intelligence. Your analytical skills will be crucial in interpreting complex data sets and presenting findings in a clear and compelling manner.

Join Kpler as a Business Intelligence Data Engineer, where you will play a crucial role in transforming data into actionable insights. You will work with cutting-edge technologies to develop and maintain our data pipelines, ensuring data quality and accessibility across the organization.

Join our innovative team at inetum2 as a Technical Leader in Artificial Intelligence. In this pivotal role, you will spearhead groundbreaking AI projects, guiding a talented team of engineers and researchers to develop cutting-edge solutions. Your expertise will be crucial in driving our technology strategy and enhancing our product offerings.

Waymo is a pioneering company in autonomous driving technology, striving to become the world's most trusted driver. Originating as the Google Self-Driving Car Project in 2009, Waymo has dedicated itself to developing the Waymo Driver—The World’s Most Experienced Driver™—to enhance mobility access and save thousands of lives lost to traffic accidents. The Waymo Driver not only powers our fully autonomous ride-hail service but is also adaptable to various vehicle platforms and applications. With over ten million rider-only trips completed, our technology has driven autonomously over 100 million miles on public roads and simulated tens of billions of miles across more than 15 U.S. states.Waymo's Data Science team plays a crucial role in our efforts to create safe and reliable autonomous driving technology. We leverage data analysis and statistical expertise to evaluate and enhance the Waymo Driver's performance, focusing on reliability, driving quality, and safety. As a Business Intelligence Analyst, you will be instrumental in building the data infrastructure that supports reporting and analytics for vital areas within the Waymo Data Science team.

As a Clinical Research Associate II, you will be immersed in a dynamic training and development environment, focusing on enhancing your CRA skills while supporting and observing clinical site monitoring services both in-house and in the field. This role encompasses comprehensive exposure and training in all facets of clinical site monitoring services. You will perform site management activities aimed at bolstering investigative site and patient recruitment, ensuring compliance, and providing oversight for full-service studies. Key responsibilities include conducting remote data reviews, assisting with data queries and closure activities, and supporting Risk Based Monitoring (RBM) initiatives. You will assess data collection and regulatory document acquisition, and execute both remote and on-site activities for investigational sites, including site contacts, qualification, initiation, monitoring, and close-out visits, either under supervision or independently, in strict adherence to corporate, sponsor, and regulatory (ICH GCP and others) standards. This position emphasizes the importance of fostering collaborative relationships with stakeholders, effectively representing the corporation.

Telemedi is a pioneering medtech company that merges the expertise of developers and healthcare professionals to create advanced digital solutions for the medical field. We design and implement cutting-edge technologies that revolutionize the way healthcare services are delivered, ensuring that both patients and doctors have easy, quick, and efficient access to medical care.Your RoleAs a Business Intelligence Analyst, you will play a crucial role in analyzing complex datasets to support our telemedicine operations. You will collaborate closely with various departments, providing actionable insights, optimizing processes, and contributing to the overall growth of the company. This position requires strong analytical skills, excellent data visualization capabilities, and experience with essential BI tools and techniques.Key ResponsibilitiesData Analysis and Reporting:Analyze large and complex datasets to generate valuable insights.Develop and maintain reports, dashboards, and visualizations using Power BI, Google Sheets, and other tools.Conduct KPI analysis to monitor business performance and identify areas for improvement.Perform cohort analysis and customer profiling to understand patient behaviors and trends.Data Infrastructure and Management:Oversee data warehouse migration projects to ensure seamless transitions with minimal disruptions.Supervise the implementation of data warehouses, ensuring data integrity and security.Implement best practices in data management to maintain high data quality standards.API Integrations and Data Management:Work with API integrations to ensure smooth data flow between systems.Manage and optimize data storage solutions, including BigQuery and MySQL.Cross-Department Collaboration:Collaborate with various teams, including marketing, operations, and IT, to support their data needs.Communicate insights and recommendations to stakeholders at all levels of the organization.

Join our dynamic team at Alimentiv as an In-House Clinical Research Associate in Warsaw. In this role, you will be responsible for supporting clinical trial management, ensuring compliance with regulatory requirements, and collaborating with cross-functional teams to facilitate the successful execution of clinical studies.

Role overview The Pack & Design Research Analyst at NielsenIQ in Warsaw interprets market data to guide decisions about product design and packaging. This work directly supports brand strategies and helps align products with consumer preferences. Key responsibilities Analyze market data to identify trends in packaging and design. Provide clear, practical recommendations for product and brand teams. Collaborate with colleagues across different departments to ensure design decisions reflect both market trends and consumer needs. Collaboration This role works closely with cross-functional teams to improve product packaging and design, keeping offerings in step with consumer expectations and market requirements.

Join Point72 as a Platform DevOps Intern in Warsaw for the summer of 2026, where you will have the unique opportunity to engage with cutting-edge technologies and contribute to our market intelligence initiatives. In this role, you will collaborate with experienced professionals to develop and optimize our platforms, ensuring they operate efficiently and effectively. This internship is designed to give you hands-on experience in a dynamic environment, allowing you to grow your technical skills and understanding of DevOps methodologies.