
Joy Njeru
@joynjeru
I turn operational and sensor data into practical engineering and forecasting improvements.
What I'm looking for
At Porsche Center Nairobi, I lead workshop diagnostics and repair operations, using productivity, turnaround, and repair-accuracy data to identify bottlenecks and improve first-time-fix rates. I also handle key After Sales Manager responsibilities, including customer escalations and operational-performance reporting.
I've combined mechanical and automotive engineering with applied data science across fuel-cell diagnostics, warehouse operations, and humanitarian forecasting. My work includes a Particle Filter model that achieved 7% RMS tracking accuracy and refugee population forecasting using Python, SQL, machine learning, and visualization.
Experience
Work history, roles, and key accomplishments
Team Leader / Electronics Technician
Porsche Center Nairobi
Oct 2025 - Present (11 months)
Lead and coordinate daily workshop operations for diagnostics and repairs across a multi-technician team. Monitor productivity, turnaround time, and repair accuracy using operational data to flag bottlenecks and drive first-time-fix rates.
Associate Operations
iFixit GmbH
Jul 2024 - Aug 2025 (1 year 1 month)
Oversaw real-time inventory accuracy through Oracle-based inventory management, reducing stock discrepancies and improving supply-chain data visibility. Analyzed warehouse process data to identify bottlenecks, implementing lean workflows and scalable systems.
Working Student – Logistics Associate
Internetstores GmbH
Oct 2021 - Feb 2023 (1 year 4 months)
Supported process optimizations that improved team efficiency and delivery reliability. Improved dispatch accuracy and reduced order-processing times, contributing to enhanced customer satisfaction.
Public Image Director
Rotary Club of Nairobi Thika Road
Jan 2020 - Dec 2021 (1 year 11 months)
Increased membership by 20% through targeted social media campaigns, boosting engagement by 25%. Led community initiatives supporting over 6,000 families during the COVID-19 pandemic.
Quality Assurance Intern, Body Fabrication
Associated Motors Limited
Aug 2019 - Dec 2019 (4 months)
Conducted product quality inspections, improving compliance rates and reducing defects in vehicle body fabrication. Streamlined material-handling workflows, cutting processing time by 20%.
Manufacturing Engineering Intern
Kenafric Industries Limited
Jun 2019 - Jul 2019 (1 month)
Assisted in optimizing an automated production line using Programmable Logic Controllers (PLC), enhancing system efficiency and reliability.
Aircraft Maintenance Intern
Air Kenya Express Limited
Jul 2017 - Sep 2017 (2 months)
Conducted inspections and repairs ensuring aircraft met safety standards and operational readiness. Applied ultrasonic and eddy-current testing methods to detect material defects, improving maintenance accuracy.
Aircraft Maintenance Intern
Kenya Wildlife Service (Air Wing)
May 2016 - Aug 2016 (3 months)
Supported scheduled maintenance tasks and contributed to engine performance optimization through detailed inspections.
Manufacturing Engineering & Supply Chain Intern
Isuzu East Africa Limited
Aug 2015 - Oct 2015 (2 months)
Optimized inventory management systems, improving material tracking and reducing production delays. Collaborated cross-functionally to address production bottlenecks, increasing manufacturing efficiency.
Education
Degrees, certifications, and relevant coursework
Esslingen University of Applied Sciences
Master of Engineering, Automotive Systems
2020 - 2023
Master of Engineering in Automotive Systems with a focus on Car Electronics. Thesis on model-based error analysis of PEM fuel cells, achieving 7% RMS tracking accuracy with a Particle Filter model.
Jomo Kenyatta University of Agriculture and Technology
Bachelor of Science, Mechanical Engineering
2013 - 2018
Bachelor of Science in Mechanical Engineering. Thesis on design and simulation of a hybrid suspension system, achieving vibration damping within 7 seconds.
Moringa School
Data Science Bootcamp, Data Science
Completed a Data Science Bootcamp, including a capstone project on refugee population forecasting and humanitarian resource planning.
Stanford University
Machine Learning Specialization, Machine Learning
Completed the Machine Learning Specialization on Coursera, instructed by Professor Andrew Ng.
Availability
Location
Authorized to work in
Salary expectations
Skills
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