Data Scientist - Knowledge Graph & Identity

Samba TV is a leading innovator in the streaming and broadcast video landscape, leveraging our proprietary data and advanced technology. Our mission is to revolutionize the viewing experience worldwide. By harnessing our extensive data, media companies can effectively connect with audiences for new shows and movies, while advertisers can engage viewers and accurately measure reach across diverse devices. Our unique narrative and insights, driven by global data and AI, offer an unparalleled perspective on culture.As a mid-level Data Scientist on the Knowledge Graph & Identity team at Samba TV in Warsaw, you will take ownership of significant data science projects, delivering solutions with minimal oversight. You are a dependable and autonomous contributor, possessing deep expertise in one of Samba's core areas—knowledge graphs, identity spine, measurement, or audience modeling—and the technical skills necessary to develop production-ready solutions utilizing modern machine learning and AI techniques. Collaborating closely with peers, product teams, and engineering, you will also play a vital role in mentoring junior data scientists within the team.

Samba TV is at the forefront of transforming the global viewing experience through innovative data and technology. Our proprietary solutions enable media companies to effectively reach and connect with audiences for new shows and movies, while allowing advertisers to engage viewers and gauge their reach across all devices. With a rich narrative shaped by our global data footprint and AI-driven insights, we are committed to enhancing entertainment for everyone.As the Data Science Manager at our vibrant Warsaw office, you will lead and nurture a talented team of 4–6 data scientists dedicated to developing Samba's knowledge graph and identity solutions—essential tools that drive our measurement and audience intelligence products. Your role will involve translating complex business challenges into actionable technical roadmaps, overseeing the entire project lifecycle, and fostering a high-performance culture characterized by experimentation, collaboration, and continuous growth. Your primary focus will be on your team: recruiting exceptional talent, establishing clear objectives, and creating an environment that empowers them to excel. Your robust background in data science will allow you to engage deeply in technical scoping, solution design, and code evaluations, and to contribute hands-on when necessary.This position reports directly to the VP of Data Science.

Join our dynamic team at evolution as a Data Scientist. In this pivotal role, you will harness the power of data to drive strategic decision-making and enhance our product offerings. Collaborate with cross-functional teams to analyze complex datasets, identify trends, and develop predictive models that will help shape the future of our business.

At Helprise, we harmonize global expertise with local talent, collaborating with organizations that prioritize quality, partnership, and accountability. We create cohesive teams that deliver impactful solutions by strategically aligning skills with business objectives. Joining us means becoming part of a deliberate approach to team formation.YOUR ROLEDrive initiatives in knowledge management and oversee operational knowledge by employing creative and engaging methods.Research and introduce a new knowledge management system aimed at enhancing information organization, boosting user engagement, and elevating satisfaction levels.Identify, categorize, and monitor all operational knowledge assets, including job aids, SOPs, policies, guides, training materials, scripts, and email templates.Collaborate with subject matter experts to ensure the accuracy and clarity of knowledge, making edits and updates as necessary.Work alongside cross-functional teams to guarantee comprehensive documentation of requirements and practices.Design and execute cross-functional knowledge approval workflows.Oversee the ongoing maintenance of all operational knowledge and champion continuous improvement efforts.Recognize and address additional knowledge management requirements (e.g., technical writing, instructional design).Guide and mentor team members involved in knowledge management initiatives.Utilize technology to offer realistic references on our website and application, including emulators and simulators.

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.

QED (https://qed.ai) is an innovative tech firm dedicated to enhancing public health and ensuring food security in Sub-Saharan Africa. Our mission involves developing cutting-edge digital infrastructure and artificial intelligence solutions that bridge the gap between humanitarian aid and scientific research. This includes in-situ nutrient analysis of crops, soils, and foods, along with national-scale surveillance of diseases such as HIV and malaria across multiple African nations. Our organization is proudly supported by various philanthropic and governmental entities, including the Gates Foundation, the Polish Ministry of Agriculture, and the Global Fund.We are excited to invite a talented Data Scientist to our Warsaw team, focusing on ScanSpectrum (https://scanspectrum.qed.ai), a revolutionary low-cost handheld spectrophotometry kit designed to evaluate the quality parameters of food and agricultural products.

Join our innovative project aimed at revolutionizing business processes through cutting-edge artificial intelligence and advanced technologies. This initiative leverages intelligent data management and supports automated decision-making while ensuring efficiency, security, and scalability.ResponsibilitiesDesign and implement sophisticated algorithms for generative AI models that improve human-machine interaction in targeted industries.Perform comprehensive analysis of extensive datasets to extract valuable insights, trends, and patterns aligned with the objectives of the joint venture.Develop and train generative AI models, ensuring their reliability and performance through thorough evaluation methods.Collaborate with a skilled team, learning and contributing to the transition from traditional language models to state-of-the-art Large Language Models (LLMs) and fine-tuning methods such as LoRA and QLoRA.Keep updated with the latest advancements in AI and generative models (including open source), proposing and implementing creative solutions to enhance our technology's capabilities.Gain a profound understanding of the shipping and industrial sectors to customize generative AI solutions that tackle specific challenges and opportunities within these domains.

About WPP MediaWPP is recognized as the trusted growth partner for the world's leading brands. By leveraging exceptional talent, reliable data, and top-tier partnerships through our innovative marketing platform, WPP Open, we empower clients to navigate change, seize opportunities, and achieve transformative growth.WPP Media, as WPP's AI-driven media operating unit, integrates media, data, and partnerships to provide scalable creative personalization. Through WPP Open and powered by Open Intelligence, our clients gain transparent insights into the effectiveness of their media investments.Explore more at wppmedia.com.WPP is committed to creative transformation, utilizing the power of creativity to forge better futures for our people, our planet, our clients, and our communities. Visit wpp.com for additional insights.At WPP Media, we value our culture and people, which drives us to deliver exceptional experiences for our clients and one another. As part of our team, embracing the core values of WPP and WPP Media is essential:Be Extraordinary by Leading Collectively to Inspire Transformational Creativity.Create an Open environment by Balancing People and Client Experiences through Cultivating Trust.Lead Optimistically by Championing Growth and Development to Mobilize the Enterprise.

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.);

At Samba TV, we are redefining the way viewers engage with content. Our innovative technology and robust data analytics empower media companies to connect with their audiences effectively, and advertisers to track and measure viewer interactions seamlessly across multiple devices. By harnessing a wealth of insights driven by AI and a global dataset, we aim to transform the viewing experience for everyone.As a Mid-Level Data Scientist joining our Knowledge Graph & Identity team in Warsaw, you will take charge of the complete execution of critical data science initiatives with minimal supervision. Your expertise in one of Samba's core areas—be it knowledge graphs, identity management, audience measurement, or modeling—will be crucial. You will utilize modern machine learning and AI techniques to develop production-ready solutions. Collaboration with peers, product managers, and engineering teams will be key, alongside mentoring junior data scientists to foster growth within the team.

About Samba TV Samba TV is a media intelligence company focused on helping marketers understand their audiences. Using advanced AI, Samba TV tracks media consumption across millions of smart TVs and 2.5 billion web pages. By combining this data with third-party signals in the Samba Knowledge Graph, the company builds detailed profiles for 1.5 billion users worldwide. Brands, agencies, publishers, and platforms use this information to make informed decisions throughout the marketing funnel. Role Overview: Product Manager, Identity Based in Warsaw, the Product Manager, Identity will lead the strategy for Samba TV's identity infrastructure and data connectivity. This role is central to managing how identifiers connect, resolve, and activate across proprietary TV viewership data, web behavioral data, and third-party assets from partners and clients. The work directly supports precise audience targeting, accurate measurement, and smooth data interoperability across multiple platforms. What You Will Do Oversee the connections and activations of identity data across TV, web, and partner sources Drive the strategy for data connectivity and identity resolution within the platform Support accurate measurement and audience targeting for clients Ensure the identity infrastructure remains strong and adaptable as privacy standards and technologies evolve Help unlock the value of first-party viewership and behavioral data in a post-cookie environment What Matters Here Commitment to privacy while enabling precise audience connections Building and maintaining a future-ready identity infrastructure Enabling data interoperability across diverse platforms and partners

Saviynt’s Technical Account Manager - Identity Security position in Warsaw centers on supporting major clients as a trusted technical advisor. This role focuses on guiding organizations through complex identity security projects, building lasting partnerships, and ensuring the Saviynt platform remains a core part of each client’s security strategy. Role overview This position goes beyond traditional account management. The Technical Account Manager acts as the main technical point of contact for key clients in Poland, helping them navigate identity security transformations and implementations. The role involves connecting technical expertise with client goals to deliver long-term value and ensure the Saviynt platform is fully integrated into each organization’s security framework. What you will do Serve as the primary technical contact for strategic clients in Poland Guide organizations through identity security transformations and platform implementations Proactively address client needs and challenges related to identity governance Ensure the Saviynt platform is integrated into client security frameworks Align technical solutions with client strategies to deliver ongoing value Requirements Experience in identity security or technical account management roles Strong technical background with a solid understanding of identity platforms Ability to build trust with strategic clients and support complex implementations Comfort working with enterprise and government organizations Located in or able to work from Warsaw, Poland Saviynt’s platform is recognized for helping organizations manage and govern access across applications, data, and business processes. Clients include Fortune 500 companies, government agencies, and leading brands. For more details, visit www.saviynt.com.

The Identity and Access Management Engineer at arhs helps strengthen the company’s security by overseeing user identities and access permissions across various systems. This position works with teams from different departments to set up and maintain effective identity management and access control processes. Role overview This role focuses on protecting sensitive information by managing who can access which resources. The engineer ensures that all identity and access procedures align with both regulatory requirements and internal policies. Collaboration Working with cross-functional teams is a key part of the job. The engineer helps other departments follow best practices for identity and access management, supporting the organization’s overall security goals.

Bolt is seeking a Senior Product Designer to join the Identity team in Warsaw, Poland. This role centers on improving how users interact with authentication, identity management, and document verification features across both mobile and web platforms. Role overview The Identity team focuses on helping users create, access, manage, verify, and protect their accounts. The work balances a smooth user experience with security, compliance, and privacy requirements, supporting Bolt’s growing mobility ecosystem. What you will do Design user flows and interfaces for authentication and identity management Enhance document verification processes on web and mobile applications Contribute to solutions that keep user accounts secure while maintaining ease of use Impact This position offers the chance to shape how millions of users interact with Bolt’s products globally, ensuring both safety and simplicity in every account interaction.

Join JetBrains, a leading software development company known for creating innovative tools for developers, as a Security Engineer specializing in Identity and Access Management (IAM). In this role, you will be pivotal in ensuring the security and integrity of our systems by managing user identities and access control mechanisms.

About Mistral AIAt Mistral AI, we harness the transformative capabilities of artificial intelligence to streamline processes, optimize time management, and foster creativity and learning. Our innovative technology is crafted to integrate effortlessly into everyday workflows.We are committed to democratizing AI through the development of high-performance, optimized, open-source models, products, and solutions. Our extensive AI platform caters to both enterprise and personal requirements, featuring offerings such as Le Chat, La Plateforme, Mistral Code, and Mistral Compute, all designed to deliver cutting-edge intelligence to users.Our vibrant and collaborative team is passionate about AI’s potential to revolutionize society. Comprising a diverse workforce that thrives in competitive settings, we are dedicated to fostering innovation. Our teams are distributed across France, the USA, the UK, Germany, and Singapore, embodying a spirit of creativity and teamwork.Join us in shaping the future of AI at a pioneering company. Together, we can drive significant change. Explore our culture further at https://mistral.ai/careers.Mistral AI participates in the E-Verify programYour Role• Innovate and develop groundbreaking methods to advance the capabilities of large language models.• Engage with diverse use cases (e.g., reasoning, coding, agents) and modalities (e.g., text, image, speech).• Construct tools and infrastructure to facilitate large-scale training, evaluation, and analysis of AI models.• Collaborate cross-functionally with scientists, engineers, and product teams to deploy AI systems that make a tangible impact.Your Profile• You possess strong software engineering skills in at least one programming language (e.g., Python, Rust, Go, Java).• You have hands-on experience with AI frameworks (e.g., PyTorch, JAX) or distributed systems (e.g., Ray, Kubernetes).• You demonstrate high engineering competence, capable of designing complex software and ensuring its production usability.• You are a self-motivated individual who excels both autonomously and as part of a team.Ideal Qualifications• You have practical experience in training large transformer models in a distributed environment.• You are adept at navigating the full machine learning lifecycle, from data preparation to model deployment.

Role overview Sigma Software Group is hiring a Senior Data Engineer in Warsaw to focus on integrations and the data platform. This position involves designing and building solutions that connect data across the company’s platforms. Collaboration with teams throughout the organization is central to keeping data moving reliably and strengthening the overall data architecture. What you will do Design and implement data integration solutions for various platforms Work closely with cross-functional teams to keep data flowing seamlessly Optimize and maintain data pipelines for performance and reliability Monitor data quality and drive improvements where needed Apply best practices in data management Support the ongoing development of the company’s data architecture Impact This role plays a key part in enabling data-driven decision making at Sigma Software Group. By ensuring reliable, high-quality data is available when needed, the Senior Data Engineer helps establish data as a strategic asset for the organization.

Join our innovative team at it labs as a Data Architect. In this pivotal role, you will design and implement robust data architectures that enable us to leverage data for strategic decision-making. You will work closely with cross-functional teams to ensure data integrity and security while optimizing data workflows.

Join Our Team as a CDP Data Engineer!At Software Mind, we are dedicated to crafting innovative analytical solutions for digital services. Our mission is to create a state-of-the-art data ecosystem utilizing a diverse array of technologies, particularly within the AWS cloud environment.We are seeking a talented individual to become an integral part of our team, focusing on the implementation of a Customer Data Platform (CDP). This role encompasses everything from installation and configuration to development, integration with our analytical and Data Governance tools, and ongoing maintenance.Your Contributions Will Include:Establishing and maintaining the CDP environment, including collectors, enrichers, and loaders.Integrating event data from multiple sources.Configuring and developing the CDP, including schema repositories.Building and sustaining data pipelines on AWS.Creating analytical models and integrating them with the data catalog.Collaborating on the development and implementation of user identification mechanisms (ID stitching, cross-device, cross-site, consent logic).Documenting processes and working closely with teams in Data Engineering, Data Management, Data Governance, IT, Privacy, and Analytics.