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Estifanos Teklay

@estifanosteklay

AI Engineer at TENACIOUS INTELLIGENCE CORPORATION building agentic AI workflows for lead qualification, customer engagement, and CRM automation.

Ethiopia

Message

At TENACIOUS INTELLIGENCE CORPORATION, I build autonomous AI agents and LLM workflows for lead qualification, customer engagement, follow-up, and CRM automation. I develop these applications with Python, OpenAI APIs, LangChain, and LangGraph.

At AWASH BANK, I designed and prototyped an AI-powered policy analysis assistant using RAG, embeddings, and vector search. I also developed machine-learning models for customer churn prediction and credit scoring, and contributed to the bank's AI and Data Strategy.

Experience

Work history, roles, and key accomplishments

Current

AI Engineer – Agentic AI & LLM Systems

Current

Tenacious Intelligence Corporation

Apr 2026 - Present (6 months)

Build autonomous AI agents and LLM workflows for lead qualification, customer engagement, and CRM automation. Develop AI applications using Python, OpenAI APIs, LangChain, LangGraph, RAG, tool calling, and REST APIs.

Python OpenAI API Lang Chain LangGraph RAG Tool calling REST APIs CRM Automation Knowledge Base Vector Search AI Evaluation

AI & Data Scientist – Machine Learning & Predictive Analytics

Mastercard Foundation

Nov 2024 - Oct 2025 (11 months)

Built predictive analytics and forecasting solutions that transformed program data into actionable insights. Developed data preparation and analytical workflows supporting machine-learning and AI use cases.

Predictive Analytics Forecasting Machine Learning Data Preparation Data Analysis Executive Dashboards

AI & Data Engineering Specialist

Awash Bank

Oct 2022 - Nov 2024 (2 years 1 month)

Designed and prototyped an AI-powered policy analysis assistant using RAG, LLMs, embeddings, and vector search. Developed ML models for customer churn prediction and credit scoring, and built data and automation workflows across digital banking and fraud analysis.

RAG LLM Embeddings Vector Search Machine Learning Churn Prediction Credit Scoring Data Engineering Automation Fraud Analysis

AI & Information Systems Engineer

Commercial Bank of Ethiopia

Jun 2019 - Oct 2022 (3 years 4 months)

Built data-driven analytics for ATM/POS and payment-switch systems, turning high-volume transaction data into operational insights. Monitored ACI Base24 payment systems and developed automated uptime and performance analysis.

Data Analysis ATM POS Payment Switching Base24 Performance Analysis Automation