Sandra Onyinyechi Oriji

Oriji Onyinyechi Sandra Data Analyst | Business Analyst LinkedIn​ Portfolio​ GitHub SUMMARY Experienced Data Analyst with 4 years of experience helping companies build data analytics solutions while driving value and better return on investment. Proficient in data management, designing and building analytical reports and dashboards for tracking KPI, and building data pipelines that deliver data for reporting. Recognized for a strong problem-solving mindset, efficient coding practices, and leadership in driving projects from conception to deployment. SKILLS Languages: Python Databases: PostgreSQL, MySQL Tools & Platforms: Docker, AWS, GCP, Git, Power BI, Tableau Other: Microsoft Office Apps, Agile, DAX, Webscraping WORK EXPERIENCE Data Analyst/Scientist - Tolaram Africa Enterprise |Lagos, NG - 01/2025 - Present ●​ Customer Complaint Analytics: Built Power BI dashboards using SQL-transformed data from Fabrics Warehouse, SAP, and Orion, to enhance complaint resolution efficiency by 30% through faster reporting and root cause analysis.​ ●​ Noodle Weighment Performance Monitoring: Developed a Power BI dashboard integrating Orion and SAP data, to improve visibility and reduce noodle weight deviations by 55% through process capability analysis.​ ●​ Production Summary Report: Designed a comprehensive report for the production team, delivering insights on output, scrap rates, and material variances to improve efficiency and resource utilization.​ ●​ Sales Report: Created and maintained sales performance reports tracking daily, MTD, YTD, brand-wise, SKU-wise, and location-based KPIs, enabling leadership to make faster, data-driven decisions. Technical/Customer Support - Tek Experts Nigeria|Lagos, NG - 10/2023 - 12/2024 ●​ Diagnosed and resolved system issues (OS, Microsoft 365 apps) via phone, email, and chat, achieving over 85% first-contact resolution rate with an average of 15+ tickets closed daily.​ ●​ Escalated unresolved cases following standard procedures and collaborated with internal Microsoft teams to ensure timely resolutions.​ ●​ Maintained detailed documentation and reports for all support interactions, improving knowledge sharing and case tracking by 25%.​ ●​ Delivered consistent, high-quality customer service, contributing to a 95% customer satisfaction score for my Team through clear communication and technical expertise. Data Analyst - Data Science Nigeria |Lagos, NG - 10/2023 - 12/2024 ●​ Translated business requirements into analytical SQL queries, improving accuracy of reporting by 20%.​ ●​ Designed and implemented ETL data pipelines to integrate data from databases, logs, and flat files, increasing data availability by 30%.​ ●​ Collaborated with data engineers to source, manipulate, and prepare data to build reports and dashboards, reducing turnaround time by 25%.​ ●​ Deployed dashboards and presented actionable insights to team leads, enhancing decision-making efficiency by 35%. EDUCATION B.Sc in Biochemistry |Michael Okpara University of Agriculture Umudike | 01/2013 – 12/2017 From Data to Insights with Google Cloud Specialization, Coursera | March. 2020 Feature Engineering for ML in Python | Sep. 2020 Google Data Analytics, Coursera | Sep. 2022 Data Modelling in Power BI, DataCamp | Nov. 2022 Meta Database Engineer Specialization, Coursera | July. 2023 AWS Certified Cloud Practitioner, AWS | July. 2024