Waithaka Njoroge

Systems Developer · Embedded Systems Engineer in Training · Engineering Student

I build to understand, experiment to improve, and engineer to make ideas work.

I'm Waithaka Njoroge, a Bachelor of Science student in Microprocessor Technology and Instrumentation at the University of Nairobi. My interests lie at the intersection of systems programming, embedded engineering, electronics, Linux, cybersecurity, physics, and scientific computing.

I enjoy working close to the machine: understanding how software interacts with hardware, how operating systems organize resources, how networks move information, and how physical principles become measurable, working systems. I learn by building, testing, debugging, reading documentation, and understanding the mechanisms beneath the abstractions.

🔗 Find Me Online

GitHub: @seleste3580-dev
GitHub Repositories: Explore my projects
Aetheris OS: Rust-based ESP32-C6 operating system

🧭 About Me

I'm an engineering student and independent developer interested in understanding technology from the physical layer to the application layer. My academic foundation in physics, mathematics, microprocessors, and instrumentation complements my hands-on exploration of Rust, embedded firmware, Linux systems, backend services, and cloud infrastructure.

I value first-principles thinking, reproducible results, secure configurations, clear documentation, and real implementations. I am not interested in treating a system as a black box when I can investigate how it works.

My long-term goal is to become a capable systems and engineering developer who can move confidently between hardware, low-level software, infrastructure, and scientific applications.

🛠️ Technical Skills

Systems Programming & Software Engineering

Rust — systems programming, embedded development, and command-line tools
C and C++ — microcontroller firmware and hardware-oriented programming
Python — scripting, automation, and experimentation
Shell workflows, Git, debugging, software architecture, and testing
Data structures, algorithms, and object-oriented programming
Backend development and API design

Embedded Systems & Electronics

ESP32-C6, ESP32-S3, ESP32-family microcontrollers, and RP2040 Pico/Pico W
Arduino prototyping and embedded firmware
GPIO, UART, I²C, SPI, and PWM
Sensor interfacing and peripheral integration
OLED and TFT display systems
RFID, GPS, infrared communication, and motion sensors
Servo control, motor drivers, and automation
Hardware-software integration and microcontroller system design

Linux, Networking & Cloud Infrastructure

Linux command-line environments and Termux
Ubuntu server administration
Docker and containerized services
PostgreSQL database administration
Nginx and Caddy reverse proxies
Rust backend development with Axum
HTTP/HTTPS, DNS, TLS, and network services
AWS Lightsail and cloud-hosted infrastructure
GitHub workflows and automated deployment

Cybersecurity

Authorized security research and laboratory experimentation
Linux security tools and networking fundamentals
Service discovery and attack-surface analysis
Web application security concepts
Server hardening and access-control design
Secure configuration and defensive engineering
Security-conscious backend and infrastructure development

My approach to cybersecurity is based on understanding how systems fail, validating findings in authorized environments, and applying that knowledge to build safer systems.

Physics, Mathematics & Scientific Computing

Electromagnetism and electrodynamics
Mechanics and oscillatory motion
Waves, optics, and photonics
Calculus, discrete mathematics, probability, and statistics
Computational physics and numerical methods
Image processing and scientific data analysis
Machine learning and deep learning

Advanced Engineering Interests

Operating-system architecture and bare-metal computing
RISC-V and computer architecture
Power electronics and control systems
Mechatronics, robotics, and automation
Instrumentation and measurement systems
Distributed systems and networked computing
Biophotonics and radiation physics
Quantum physics, aerospace, and space technology

These areas represent a combination of practical experience and ongoing study, rather than a claim of professional mastery in every discipline.

🚀 Featured Project: Aetheris OS

Aetheris OS is my Rust-based embedded operating-system project targeting the ESP32-C6 RISC-V microcontroller.

The goal is to develop a standalone, application-oriented embedded environment rather than a single-purpose microcontroller sketch. The project brings together system-level Rust programming, hardware peripherals, a display-based interface, device utilities, and firmware-update functionality.

Project Features

Rust-based embedded system development
ESP32-C6 and RISC-V experimentation
Display-driven user interface and application menu
Clock, timer, stopwatch, notes, and calculator
Wi-Fi tools and system information
Piano, metronome, and games
Infrared remote functionality
Firmware updates and device-management features

Repository: github.com/seleste3580-dev/rust_c6_os

Aetheris represents my interest in understanding computing systems from the hardware upward: how software interacts with peripherals, how functionality is organized, and how a microcontroller can become a dedicated computing platform.

🧪 Other Projects

Seleste OS

An ESP32-S3-based microcontroller interface with display-driven applications, system utilities, and Wi-Fi functionality.

AquaMonitor

An embedded water-monitoring concept involving water-quality sensors, instrumentation, and data acquisition.

Rust Systems Development

Exploration of command-line utilities, shell development, and low-level programming, with an emphasis on understanding system behavior.

Cloud & Web Infrastructure

Hands-on work with Linux servers, Docker, PostgreSQL, reverse proxies, Rust/Axum services, and deployment workflows.

Explore my work: GitHub Repositories

🎓 Education & Background

I am pursuing a Bachelor of Science in Microprocessor Technology and Instrumentation at the University of Nairobi.

My academic interests connect physics and mathematics with electronics, microprocessors, measurement, and instrumentation. Outside formal coursework, I develop practical skills through independent software and hardware projects, technical documentation, and experimentation.

Additional experience includes:

Participation in the Kenya Science and Engineering Fair in 2022 and 2023
Service as a computer laboratory prefect at Geta Secondary School
Independent study in programming, embedded systems, Linux, and infrastructure

⚙️ Engineering Philosophy

First principles: Understand the mechanism before relying on an abstraction.
Build and verify: Test ideas on real hardware or in reproducible environments.
Engineering rigor: Document assumptions, errors, limitations, and implementation status.
Security awareness: Consider permissions, exposed services, and failure modes early.
Continuous learning: Use projects to connect theory with practical results.
Technical independence: Develop the ability to diagnose problems and make informed decisions.

🤝 Collaboration

I'm interested in collaborating on:

Open-source software and Rust development
Embedded systems and electronics
Linux infrastructure and cybersecurity
Scientific computing and computational physics
Robotics, instrumentation, and automation
Operating systems and low-level software

If you're working on a technically challenging project in these areas, explore my work on GitHub.

🎯 Looking Ahead

My long-term goal is to develop the skills to design, implement, and maintain systems across hardware, software, physics, and infrastructure. I'm particularly interested in reliable embedded platforms, low-level software, secure systems, and computational tools that solve meaningful engineering problems.

Understand the system. Build the solution. Verify the result.

About

About Waithaka Njoroge | Systems, Embedded Rust & Engineering