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I am a coding expert with a solid foundation in computer science and a passion for solving complex problems to advance AI systems. I specialize in Python, Java, JavaScript, C++, and TypeScript, with hands-on experience in data analysis, software development, and building AI models. I am committed to contributing to the training and improvement of generative AI models through careful experimentation, evaluation, and iteration. Currently pursuing a Master of Science in Cybersecurity at Canterbury Christ Church University, I combine technical proficiency, analytical thinking, and a growth mindset to tackle security-conscious AI projects. I excel at communicating complex technical concepts clearly, collaborating across teams, and continuously expanding my skills in machine learning, secure coding practices, and software engineering.…I am a coding expert with a solid foundation in computer science and a passion for solving complex problems to advance AI systems. I specialize in Python, Java, JavaScript, C++, and TypeScript, with hands-on experience in data analysis, software development, and building AI models. I am committed to contributing to the training and improvement of generative AI models through careful experimentation, evaluation, and iteration. Currently pursuing a Master of Science in Cybersecurity at Canterbury Christ Church University, I combine technical proficiency, analytical thinking, and a growth mindset to tackle security-conscious AI projects. I excel at communicating complex technical concepts clearly, collaborating across teams, and continuously expanding my skills in machine learning, secure coding practices, and software engineering.

David Njau Maina

AI Developer, Full Stack Developer, Web Developer, +2

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I am a coding expert with a solid foundation in computer science and a passion for solving complex problems to advance AI systems. I specialize in Python, Java, JavaScript, C++, and TypeScript, with hands-on experience in data analysis, software development, and building AI models. I am committed to contributing to the training and improvement of generative AI models through careful experimentation, evaluation, and iteration. Currently pursuing a Master of Science in Cybersecurity at Canterbury Christ Church University, I combine technical proficiency, analytical thinking, and a growth mindset to tackle security-conscious AI projects. I excel at communicating complex technical concepts clearly, collaborating across teams, and continuously expanding my skills in machine learning, secure coding practices, and software engineering.…I am a coding expert with a solid foundation in computer science and a passion for solving complex problems to advance AI systems. I specialize in Python, Java, JavaScript, C++, and TypeScript, with hands-on experience in data analysis, software development, and building AI models. I am committed to contributing to the training and improvement of generative AI models through careful experimentation, evaluation, and iteration. Currently pursuing a Master of Science in Cybersecurity at Canterbury Christ Church University, I combine technical proficiency, analytical thinking, and a growth mindset to tackle security-conscious AI projects. I excel at communicating complex technical concepts clearly, collaborating across teams, and continuously expanding my skills in machine learning, secure coding practices, and software engineering.

Available to hire

I am a coding expert with a solid foundation in computer science and a passion for solving complex problems to advance AI systems. I specialize in Python, Java, JavaScript, C++, and TypeScript, with hands-on experience in data analysis, software development, and building AI models. I am committed to contributing to the training and improvement of generative AI models through careful experimentation, evaluation, and iteration.

Currently pursuing a Master of Science in Cybersecurity at Canterbury Christ Church University, I combine technical proficiency, analytical thinking, and a growth mindset to tackle security-conscious AI projects. I excel at communicating complex technical concepts clearly, collaborating across teams, and continuously expanding my skills in machine learning, secure coding practices, and software engineering.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Work Experience

Machine Learning & Modeling at Fintech company

January 1, 2025 - January 1, 2025

Developed and productionized ML models for recommendation systems, predictive maintenance, and NLP chatbots using Python, Scikit-learn, TensorFlow/PyTorch. Achieved a 15% improvement in prediction accuracy and 95% precision in classification by implementing and fine-tuning algorithms like XGBoost, CNNs, Transformer models. Managed the full model lifecycle from data collection and preprocessing to training, validation, and deployment.

Software Developer and AI Specialist at Sasa Host Limited, Nairobi, Kenya

January 1, 2024 - January 1, 2024

Evaluated and ranked AI-generated code based on functionality, efficiency, and scalability. Collaborated with a team to design and train machine learning models for predictive analytics. Developed automated testing systems to assess the quality of AI-generated responses. Implemented optimization techniques to enhance algorithm performance by 30%.

Data labeling specialist at Outlier AI

January 1, 2024 - November 7, 2025

Guideline development, platform configuration, and annotation execution for labeling thousands of data points (transactions or event logs) following established guidelines; escalated ambiguous cases to more experienced analysts.

Data Labeling Specialist at Amazon

January 1, 2022 - January 1, 2022

Utilizing labeled data for several critical AI applications. For e-commerce, accurate product categorization and search are vital. For Amazon Alexa, high-quality labeled voice data is essential to train speech recognition and natural language understanding (NLU) models.

Freelance Software Developer at Upwork and Freelancer

January 1, 2020 - January 1, 2020

Developed custom software solutions for small businesses, focusing on efficiency and security. Conducted workshops on programming fundamentals (Python, Java, and C++). Assisted clients in transitioning to AI-powered solutions for business operations.