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Koffi Wambua3

@koffiwambua3

Senior Full-Stack / AI Engineer at Handshake AI, building backend systems and REST APIs for AI model evaluation workflows.

Kenya

Message

At Handshake AI, I design and deploy scalable backend systems for AI model evaluation workflows and build full-stack applications with Python, FastAPI, Next.js, PostgreSQL, and Redis. I also improve API performance and contribute to prompt optimization and model reliability initiatives.

Previously, I developed AI evaluation tools and data pipelines at Outlier AI, engineered distributed AI data processing services at Scale AI, and built NLP and machine learning applications at IBM. My project work includes a full-stack SaaS platform, an AI evaluation and optimization platform, and an iOS productivity application.

Experience

Work history, roles, and key accomplishments

Current

Senior Full-Stack / AI Engineer

Current

Handshake AI

Jan 2025 - Present (1 year 9 months)

Designed and deployed scalable backend systems for AI model evaluation and distributed processing. Built RESTful APIs and full-stack applications using Python, FastAPI, Next.js, PostgreSQL, and Redis.

Python fastAPI Next.js PostgreSQL Redis REST APIs AI model evaluation prompt optimization Distributed Systems

Current

Full-Stack Software Engineer

Current

Outlier AI

Jan 2024 - Present (2 years 9 months)

Developed internal dashboards and evaluation tools for AI model assessment workflows. Built scalable backend services and data pipelines for grading and annotation systems.

SQL Caching Data Pipelines Async Workflows and Background Jobs AI Evaluation Reasoning

Software Engineer

Scale AI

Jan 2023 - Dec 2024 (1 year 11 months)

Engineered backend services and processing pipelines for large-scale AI data systems. Optimized workflows for distributed processing and improved system efficiency.

Backend Services Data Processing Distributed Systems System Optimization AI Model Training

Machine Learning Engineer

IBM

Jan 2022 - Dec 2023 (1 year 11 months)

Developed and deployed NLP and machine learning applications in production environments. Built APIs and scalable services for model serving and real-time processing.

NLP Machine Learning API Development Model Serving cloud deployment Testing Optimization

Education

Degrees, certifications, and relevant coursework

University of Nairobi

Doctor of Philosophy, Software Engineering

2023 -

Pursuing a PhD in Software Engineering with research on scalable AI systems, distributed architectures, and ML optimization. Dissertation focuses on design and optimization of large-scale AI-driven systems.