Data Analyst - SQL, Python, Power BI, Excel

Jonathan Adatsi

Hartford, CT 860-***-**** **************@*****.*** LinkedIn: linkedin.com/in/jonathan-adatsi

Professional Summary

Data Analyst with 1–3 years of hands-on experience delivering end-to-end analytics solutions using SQL, Python, Excel, and Power BI. Strong background in data analysis, validation, statistical reporting, and business intelligence, with experience working in regulated environments. Proven ability to clean and prepare messy datasets, build dashboards, perform deep-diving analysis, and communicate insights clearly to stakeholders. Self-motivated, detail-oriented, and intellectually curious, with a strong interest in modern analytics practices and continuous learning.

Technical & Analytical Skills

Data Analysis & Investigation: Ad hoc analysis, deep-dive investigations, data profiling, validation

SQL / Databases: SQL, MySQL (adaptable to Oracle)

Programming & Analysis: Python (Pandas, NumPy)

BI & Visualization: Power BI (DAX, dashboards, reporting)

Spreadsheets: Microsoft Excel (PivotTables, VLOOKUP/XLOOKUP)

Data Engineering Concepts: ETL support, dataset preparation, data quality checks

Business Skills: Requirements gathering, documentation, stakeholder communication

Other: Root cause analysis, regulatory/statistical reporting support

Education & Certifications

M.S, Systems Engineering 2015

Florida Institute of Technology Melbourne, FL

B.Sc., Computer Science & Statistics 2004

University of Ghana — Legon, Accra, Ghana

Certifications & Training Expected completion date

Python Certiport 2025

Databases Certiport 2024

JavaScript Certiport in Progress

CompTIA Tech+ Certiport in Progress

Introduction to Cybersecurity Networking Cisco Networking Academy 2024

Introduction to Internet of Things (IoT) Cisco Networking Academy 2024

Scrum Fundamentals Certified SCRUMstudy (VMEdu) 2024

Linux Unhatched — Cisco Networking Academy 2024

Work Experience

Caregiver

Hartford HealthCare Independent at Home Wethersfield, CT 2022– Present

Maintained accurate documentation and reports in compliance with healthcare policies and regulatory standards.

Communicated effectively with supervisors and healthcare professionals to resolve issues and support service delivery.

Demonstrated strong attention to detail, data accuracy, and time management in a regulated environment.

Assisted with basic data analysis, documentation, and process improvement activities.

Telecom Engineer

Vodafone Accra, Ghana 1999 – 2013

Supported data analysis and reporting related to network performance, reliability, and operational metrics.

Applied statistical analysis techniques to assess performance trends and identify data-driven improvement opportunities.

Collaborated with cross-functional teams to resolve operational issues and support business objectives.

Documented technical processes and analytical findings to support decision-making and reporting.

Data Analyst Project

Academic & Project-Based Experience Melbourne, Florida 2014- 2015

Delivered end-to-end data analysis projects, from data extraction and cleaning to analysis, visualization, and reporting.

Analyzed large datasets using Python, SQL, and Excel to improve data accuracy, completeness, and reporting reliability.

Performed data profiling and statistical analysis to identify anomalies, inconsistencies, and root causes of data issues.

Built Power BI dashboards and Excel-based reports to support ad hoc requests and recurring reporting needs.

Wrote complex SQL queries to extract, join, and validate data across multiple tables.

Prepared datasets and supported ETL-style workflows through cleaning, transformation, and validation.

Documented data definitions, logic, mappings, and assumptions to ensure transparency and reporting accuracy.

Collaborated with stakeholders to translate business questions into actionable analytical insights.

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