Sandra Onyinyechi Oriji

ORIJI SANDRA ONYINYECHI Lagos, Nigeria. https://www.linkedin.com/in/oriji-sandra-91a4a3163/ https://github.com/Onyinye91-ctrl Skills Proficient: Python, SQL, Excel, Google Sheet, Power BI Moderate: Tableau, Looker Other Skills: Communication, Problem-Solving, Data Analytics, Presentation, Report Writing, Data Management, Project Management. Work Experience Data Analyst/Scientist – Tolaram Africa Jan. 2025 – Jun. 2025 • Customer Complaint Analytics: Extracted and transformed data from Fabrics Warehouse, SAP, and Orion databases using SQL and Python to monitor and visualize key customer complaint KPIs. Built interactive Power BI dashboards showing complaint counts by factory location, product, and SKU. Categorized complaints by type and description, and grouped them by origin (location, SKU, factory) to identify recurring issues and drive root cause analysis for quality improvements. • Noodle Weighment Performance Monitoring: Developed a robust Power BI dashboard to track noodle weight compliance, leveraging SQL queries on data from Orion and SAP. Analyzed underweight and overweight trends by SKU, production line, and across monthly and yearly periods. Calculated Sigma levels to measure process capability and support operational efficiency initiatives. • Monthly Oil Variance Report: Automated the generation of a monthly oil variance report using SQL and Power BI, comparing actual oil consumption to standard benchmarks across production units. Provided insights to management for cost control, process optimization, and waste reduction. • Production Summary Report: Designed and delivered a detailed Production Summary Report for the noodles production team. The report provided insights into daily and monthly production output, scrap rates, and material variances, particularly flour and oil. Supported decision making by highlighting production efficiency and waste reduction opportunities using data pulled from SAP. Technical Support Engineer – Tek Experts Nov.2023 – Dec. 2024 As a Technical Support Engineer/Customer service representative for Microsoft, I diagnosed and resolved system issues for end users via phone, email, and chat, ensuring timely and effective technical assistance. I followed standard escalation procedures for unresolved cases, collaborated with internal Microsoft teams, and maintained detailed documentation and reports for every support interaction. My role required a strong mix of technical troubleshooting and clear communication to deliver consistent, high-quality support across Microsoft products and services. Data Analyst – Data Scientist Network • • • • • Jan. 2020 – Oct 2022 Turn business requirements into an analytical query using SQL. Implementing ETL/ELT data pipelines to integrate data from multiple sources including databases, logs, flat files to our analytics database/data warehouse. Working with our data engineers to source, access, manipulate and prepare data for analytics. Work with the data analyst team to build analytics reports and dashboards. Deploy dashboards as well as present useful insight to the team lead. Education/Certification BSc Biochemistry, Michael Okpara University of Agriculture, Umuahia, Nigeria July. 2016 From Data to Insights with Google Cloud Specialization, Coursera March. 2020 Python Programming Foundation, Udacity Jun. 2022 Google Data Analytics, Coursera Sep. 2022 SQL, 365 DataScience Nov.2022 Data Analyst, Udacity June. 2022 Version Control, Coursera March. 2023 Advanced MYSQL Topics, Coursera May. 2023 Database Client, Coursera June. 2023 Meta Database Engineer Specialization July. 2023