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Work experience

Data analyst (Team Lead)

from 11.2024 to now (9 months)
Stears, Remote (IT)

• Performed secondary quality assurance (QA) on datasets, identifying and correcting 98% of data
inconsistencies, and ensuring a 99% accuracy rate in the database.
• Led a team of data analysts to enhance data integrity through cleaning, deduplication, and validation, reducing errors by 60% and improving reporting accuracy.
• Processed and cleaned large datasets using SQL, Python, and Google Sheets to ensure data quality and reliability.
• Built an automation workflow using N8N automation software, reducing manual effort by 60% and optimising database enrichment.
• Presented key insights through concise reports and visualisations, directly influencing business strategy decisions in Q1 and Q2 2025.
• Optimised database enrichment by 80% through the development of standardised prompts using advanced prompt engineering techniques.
• Conducted in-depth analysis of economic, financial, and market data using Python and statistical methods, resulting in an 85% improvement in forecasting accuracy and supporting strategic decision-making.
• Collected and integrated data from diverse sources, including internal databases, third-party APIs, and external datasets, ensuring 95% data completeness.
• Designed and developed over 30 interactive dashboards and over 100 static visual reports, enhancing stakeholder decision-making and reducing manual reporting time by 30%.

Data analyst

from 04.2024 to 11.2024 (7 months)
Midcel Softwares, Remote (IT)

- Led a team of data analysts in evaluating quantitative surveys measuring the effectiveness of various orientation programs.
- Analysed survey feedback to identify trends and key areas for program improvement, contributing to data-driven decision-making.
- Presented actionable insights through concise reports and interactive dashboards.

Data analyst

from 09.2021 to 03.2024 (2 years 6 months)
Impaakt SA, Remote (IT)

• Collected, cleaned, and organised data points from diverse sources, ensuring 99% data accuracy for analysis and reporting.
• Managed and maintained datasets of corporate ESG impact assessments, financial metrics, and sustainability evaluations
• Performed detailed quantitative analyses of 500+ corporate ESG performance metrics, directly influencing sustainability reports used by investors and stakeholders.
• Conducted qualitative analyses to identify emerging ESG trends, risks, and opportunities, contributing to 900+ published reports on corporate sustainability.
• Integrated OpenAI's GPT-4 to automate data analysis and research workflows using efficient prompt engineering, reducing manual workload by 30% and enhancing analytical efficiency.

Additional education and certificates

Google Data Analytics Professional Certificate

2024, 2 years.
Certificate

Data Analytics

2024, 6 months
Certificate

Knowledge and skills

• Adaptability
• Conflict-free
• Pandas
• Google Slides
• Conducting presentations
• Communicability
• Microsoft Copilot
• MS Excel
• SQL
• Python
• MS Power BI
• MySQL
• Tableau
• Jira
• Power Query
• Google Analytics
• N8N
• PowerPoint
• Spreadsheet
• Flourish
• Airtable
• NocoDB
• Javascript
• Git
• GitHub
• Machine learning
• Looker Studio
• Promt
• Prompt Engineering
• Keynote
• Data Warehousing

Language proficiencies

English — fluent

Additional information

Telegram: bayonleyusuff