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Joseph Sadiku

@josephsadiku

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Data analyst with a finance background, skilled in turning messy data into clear, actionable insight

Nigeria

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I’m a seasoned Data & Payables Analyst with over six years of experience in financial administration, accounts payable, and technical support—now specializing in transforming complex data into strategic business insights. My career has spanned roles in customer support, external auditing, and financial analysis, culminating in a strong foundation in financial systems and data analytics.

In recent years, I’ve pivoted into freelance data analytics, executing end-to-end projects that drive measurable impact across sales, marketing, and operations. I’m deeply interested in using tools like SQL, Python, Power BI, Tableau, and Excel to uncover patterns, automate reports, and optimize decision-making processes. I’ve completed immersive job simulations with Tata and Deloitte, sharpening my skills in executive-level data visualization and forensic analytics.

I thrive at the intersection of finance and data—building dashboards that improve clarity by up to 15%, reconciling complex accounts, and leading process improvement initiatives that have saved costs and improved compliance. My professional ethos blends technical precision with client-centric communication, and I’m known for delivering actionable recommendations that stakeholders understand and trust.

Experience

Work history, roles, and key accomplishments

Current

Freelance Data Analyst

Current

Self-Employed

Aug 2023 - Present (1 year 11 months)

Applied data analysis methodologies to solve business problems for various clients, leading to improved decision-making and operational efficiency. Developed interactive dashboards and reports that provided actionable insights into sales, marketing, and operational performance, resulting in a 5 to 15% increase in reporting clarity for various clients.

SQL Python Power BI Tableau Data Visualization Statistical Analysis Data Extraction

Technical Support Engineer

Tek Experts

Aug 2022 - Present (2 years 11 months)

Communicated effectively with end-users, system administrators, and integrators to identify, diagnose, and troubleshoot complex technical issues. Maintained meticulous documentation for all cases, including queries, process steps, and resolutions, contributing to a comprehensive knowledge base.

Technical Support Troubleshooting Documentation Customer Support Communication Mentoring Remote Support

Accounts Manager/Receivables Team Lead/Treasury Analyst

C&I Leasing Plc

Jan 2018 - Present (7 years 6 months)

Managed commercial paper investments for individual customers, consistently ensuring optimal returns and compliance with investment guidelines. Led the receivables team, ensuring the timely preparation and dispatch of invoices, which contributed to consistent cash flow.

Accounts Management Financial Restructuring Customer Support General Ledger Investment Analysis Cash Flow Management

Accounts Payable Accountant/Analyst

C&I Leasing Plc

Jan 2014 - Present (11 years 6 months)

Managed the end-to-end accounts payable process, ensuring timely and accurate vendor payments and meticulous recording in the general ledger. Conducted comprehensive cost optimization analysis for the procurement of diesel, utilities, and other operational resources, identifying opportunities for significant savings.

Accounts Payable General Ledger Bank Reconciliation Cost Optimization Financial Reporting

External Auditor / Consultant

Owoyele Sontan & Co

Nov 2010 - Present (14 years 8 months)

Assisted in the preparation of comprehensive financial reports and performed detailed audits on clients' general ledgers, ensuring compliance and accuracy. Provided support in tax filings for clients, ensuring adherence to regulatory requirements.

Financial Reporting Auditing General Ledger Tax Filings Compliance Consulting

Customer Support Representative

Union Bank Plc

Aug 2009 - Present (15 years 11 months)

Performed accurate customer information data entry and efficiently updated outdated customer records to the central server. Proposed and implemented a digital registration method for customer accounts, which significantly reduced duplication and mitigated fraud risks.

Customer Support Data Entry Data Cleaning Digital Registration Fraud Prevention

Education

Degrees, certifications, and relevant coursework

Babcock University

B.Sc. Accounting, Accounting

Studied accounting principles and practices, gaining a comprehensive understanding of financial reporting, auditing, and taxation. Developed strong analytical and problem-solving skills applicable to financial environments.

Babcock University

Bachelor of Science, Accounting

Studied Accounting at Babcock University, gaining a strong foundation in financial principles and practices. Developed skills in financial reporting, auditing, and general ledger management.