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Malachy UgwuMU
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Malachy Ugwu

@malachyugwu

AI Engineer at NSK.ai who built a document-questioning RAG chatbot with Groq, FAISS, and hybrid retrieval.

Nigeria
Message

At NSK.ai, I built a Retrieval-Augmented Generation chatbot that lets users upload PDFs and query their contents using a Groq LLM and FAISS. I combined dense search with BM25 retrieval and Cross-Encoder reranking, then deployed the interface with Streamlit.

As a contract Data Analyst, I built Excel dashboards and data workflows, including an application that estimates Lagos rent and an employee-retention prediction workflow. I also reviewed metering submissions as a Graduate Intern at the Nigerian Electricity Regulatory Commission (NERC), escalating non-compliances to supervising engineers.

Experience

Work history, roles, and key accomplishments

NN
Current

Graduate Intern

Nigerian Electricity Regulatory Commission (NERC)

Nov 2025 - Present (10 months)

Reviewed Meter Service Provider (MSP) files and technical submissions against NERC's metering regulations, identifying non-compliances and escalating findings. Supported the engineering team with data analysis tasks using Excel.

KE
Current

Chess Expert

Kabusa Garden Estate

Jul 2025 - Present (1 year 2 months)

Taught a class of 30 beginner children, covering notation, tactics, and endgame fundamentals. Explained positions in plain spoken language and translated between verbal description and board position.

US
Current

Creative Director & Content Quality Lead

UFan Studio

Jul 2022 - Present (4 years 2 months)

Led quality control for text-heavy and visual content deliverables, reviewing outputs for accuracy and clarity. Conceived, developed, and supervised multiple writing projects across fiction, comics, and narrative media.

NS

AI Engineer

NSK.ai

Jul 2025 - Sep 2025 (2 months)

Built a Retrieval-Augmented Generation chatbot allowing users to upload PDF documents and query content using a Groq LLM and FAISS vector store. Designed a hybrid retrieval pipeline combining dense search, sparse BM25 retrieval, and Cross-Encoder reranking.

TN

SIWES Industrial Trainee

Transmission Company of Nigeria

Jan 2024 - Apr 2024 (3 months)

Assisted control room engineers in monitoring power system parameters using SCADA/EMS interfaces and manual logging. Participated in daily inspections of 150MVA transformers and circuit breakers, recording temperatures and readings.

Education

Degrees, certifications, and relevant coursework

University of Nigeria, Nsukka logoUN

University of Nigeria, Nsukka

Bachelor of Engineering, Electrical Engineering

2019 - 2024

Grade: Second Class Upper Division

Bachelor of Engineering in Electrical Engineering with Second Class Upper Division. Coursework includes control systems, communication principles, and power systems.

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