Lisa Adongo Akinyi

Senior Python Developer & AI Annotation Specialist

Nairobi, KE.

About

Highly accomplished Senior Python Developer and AI Annotation Specialist with over 5 years of experience, adept at architecting high-performance backend systems and engineering high-quality datasets for large language models (LLMs). Proven expertise in Python (Pandas, NumPy, Scikit-learn) and SQL query optimization, consistently delivering end-to-end analytical pipelines and complex data annotation workflows. Specialized in establishing rigorous evaluation frameworks and implementing statistical metrics to enhance model output quality and drive significant error reductions.

Work

Safaricom PLC

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Senior AI Training & Python Data Engineer

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Summary

Led the architecture and implementation of programmatic data annotation workflows and rigorous evaluation frameworks for generative AI training pipelines at Safaricom PLC.

Highlights

Architected programmatic Python-based data annotation workflows, leveraging Pandas and NumPy to clean, validate, and structure massive datasets for generative AI training pipelines.

Designed and implemented complex Python scripts to rigorously evaluate LLM-generated code and text outputs against strict ground-truth benchmarks, successfully reducing error rates by 25%.

Authored comprehensive master annotation guidelines and gold-standard problem sets, standardizing edge-case classification across distributed AI training teams.

Developed automated Python reporting pipelines that aggregated data-labeling quality metrics from SQL databases, providing real-time analytics dashboards for performance monitoring.

Cellulant Kenya

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Senior Python & Backend Developer

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Summary

Engineered high-throughput MySQL database schemas and optimized backend data pipelines, significantly enhancing financial reporting and transactional data workflows.

Highlights

Engineered high-throughput MySQL database schemas and optimized complex queries, efficiently handling large-scale financial reporting and transactional data workflows.

Developed robust backend data pipelines using Python for ingestion, cleaning, and transformation, connecting raw user behavior logs to production dashboards.

Analyzed application logs and system metrics with statistical summaries to pinpoint performance bottlenecks, resulting in a 30% improvement in backend processing speeds.

Mentored junior developers and created comprehensive documentation for backend architecture, API endpoints, and debugging workflows, fostering team growth and operational efficiency.

Nexa Tech Labs Solutions

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Python Developer (Data & Web)

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Summary

Built and maintained Python-based web application backends and ETL processes, integrating structured data for business analytics and intelligence tools.

Highlights

Built and maintained web application backends using Python, implementing structured data processing modules for critical business analytics functions.

Executed efficient Extract, Transform, and Load (ETL) processes to migrate data from production databases, feeding internal business intelligence tools like Tableau and Metabase.

Collaborated on designing robust data storage patterns, ensuring strict adherence to optimal data types, indexing, and normalized schema design for data integrity.

Zetech University

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IT Systems & Data Analyst Intern

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Summary

Analyzed raw IT support ticket data using Python to identify system failure trends and generated actionable operational reports for management.

Highlights

Analyzed raw IT support ticket data utilizing Python to identify recurring hardware and software failure trends across Windows and Linux environments.

Generated weekly structured operational reports for management, effectively converting raw system logs into actionable business insights for strategic decision-making.

Education

KCA University

Nairobi, Nairobi, Kenya
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BSc. Software Development

Certificates

AI for Software Engineering

PLP Africa × Safaricom Hook

AWS Cloud Practitioner

AWS re/Start Programme

Skills

Programming Languages

Python, JavaScript, PHP, Rust.

AI Training & Annotation

LLM Output Evaluation, Ground-Truth Design, Prompt Engineering, Edge-Case Documentation, Reinforcement Learning from Human Feedback (RLHF) workflows.

Data Science & Machine Learning

Pandas, NumPy, Matplotlib, Scipy, Scikit-learn, Feature Engineering, Exploratory Data Analysis (EDA), Predictive Modeling.

Databases & Analytics

MySQL, PostgreSQL, Query Optimization, Advanced SQL Joins & Aggregations, Database Schema Design, Metabase, Tableau.

Cloud & DevOps

AWS (EC2, S3, IAM, CloudWatch), Git, GitHub, Linux, Ubuntu, CI/CD pipelines.

References

James Omego

Program Manager, eMobilis, +254 703 662 124, james.omego@ajiraemobilis.org

Dr. John Kamau

Senior Systems Engineer, Safaricom PLC, +254 711 000 000, j.kamau@safaricom.co.ke