We are seeking a highly specialized Data Analyst to join a critical, cutting-edge project focused on real-time fraud detection based on conversation analysis. This high-impact role supports a leading mobile OS provider and major smartphone manufacturer, and requires native-level Japanese fluency to handle conversation analysis, metric design, and visualization for the local market. You will directly contribute to customer safety and system security.Responsibilities:Independently gather and document business and system requirements for data-related inquiriesModel relational data and optimize queriesDesign and perform automated data quality testsAutomate ETL/ELT processes with scriptsPerform descriptive, diagnostic, prescriptive, and predictive data analysis as ad-hoc ones, as programmatically created onesCreate dashboards using different BI ToolsCollaborate with business and tech specialists to ensure data availability and qualityMin requirements:Bachelor’s degree in Computer Science or a related fieldProven experience as a Data Analyst or in a similar roleProficiency in data manipulation and analysis using tools for PythonJapanese Native speakerExperienced in collaborating with Machine Learning teams to provide them with high-quality, accessible dataExperienced in researching and implementing new data technologies and methodologies.Proven ability to engineer and refine complex prompts to reliably control and automate LLM outputs for analytical tasksStrong understanding of core LLM concepts, capabilities, and limitations to critically select and deploy appropriate modelsGood to have:Master’s degree in Computer Science or a related field.Familiar with Google tools and technologies, especially related to Python and data generation/analysisExperience in developing test automation for ETL / data pipelines with ETL tools or programming languagesAgentic approach for workflow automationStrong problem-solving and analytical skills skills and the ability to work independently within a defined project scopeStrong communication and collaboration skillsAbility to work in a fast-paced environment and navigate through ambiguity.Ability to manage and coordinate multiple project assignments simultaneously in a deadline-driven environment, accepting ownership and accountability of the process and delivering on commitmentsWe offer:Opportunity to work on bleeding-edge projectsWork with a highly motivated and dedicated teamCompetitive salaryFlexible scheduleBenefits package - medical insurance, sportsCorporate social eventsProfessional development opportunitiesWell-equipped officeAbout us:Grid Dynamics (NASDAQ: GDYN) is a leading provider of technology consulting, platform and product engineering, AI, and advanced analytics services. Fusing technical vision with business acumen, we solve the most pressing technical challenges and enable positive business outcomes for enterprise companies undergoing business transformation. A key differentiator for Grid Dynamics is our 8 years of experience and leadership in enterprise AI, supported by profound expertise and ongoing investment in data, analytics, cloud & DevOps, application modernization and customer experience. Founded in 2006, Grid Dynamics is headquartered in Silicon Valley with offices across the Americas, Europe, and India.