Mustapha A.

Key Skills

Software

No software listed

Top Subject Matter

Enterprise SAP financial and customer master data quality

IT troubleshooting and configuration validation (data/system state verification)

Top Data Types

Text

Top Task Types

Classification

Data Collection

Freelancer Overview

Support Staff, Ayashang Professional Services Ltd (NNPCL) (data cleansing and master-data preparation). Brings 8+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Internal and Proprietary Tooling. Education includes Bachelor of Science, Nile University of Nigeria (2021) and Secondary School Certificate, Key Science Academy, Masaka (2017). AI-training focus includes data types such as Text and labeling workflows including Classification and Data Collection.

Labeling Experience

Support Staff, Ayashang Professional Services Ltd (NNPCL) (data cleansing and master-data preparation)

TextClassification

Performed data cleansing to ensure accurate structured records for enterprise systems (including S4/HANA) and reduced inconsistencies in uploaded datasets. Managed user period setup and maintained extensions in SAP ECC/GL, supporting the correctness of categorized financial master data. Created and maintained customer-related account records and commitment items to preserve label integrity across downstream usage. • Cleansed and standardized records prior to upload into S4/HANA • Opened user periods and managed SAP ECC GL extensions • Created customer accounts in NRL (Retail) and commitment items • Supported GL account creation and ensured data integrity

2023 - Present

IT Support Assistant (SIWES), Nigerian National Petroleum Company Limited (NNPCL)

TextData Collection

Supported IT operations by installing, updating, and verifying systems while performing diagnostic checks that involved reproducing and tracing faults. Conducted quality assurance checks on peripheral equipment to validate that outputs matched expected configuration states. Configured IP phones and networking components, supporting reliable data communication and system behavior. • Troubleshot and traced faults after reported errors • Verified system performance and updates during QA checks • Configured Cisco CUCM IP phones and ensured network readiness • Performed installation/update tasks and basic validation testing

2019 - 2019

Education

Work History