I am Javier Rayhan A,
an independent embedded systems & frontend
developer
Embedded Systems & Frontend Developer
About
I am Javier Rayhan A., a dedicated tech enthusiast with a strong passion for IoT, AI, and embedded systems. As a admitted student at Telkom University (Informatics), I specialize in developing microcontroller-based projects, particularly using ESP32, C++, and advanced hardware integrations.
Download CVExpertise
- 3D Printing
- UI/UX
- Embedded System
- Product Design
- Prototyping
- PCB Design
Experience
At Home
Product Designer Hobbiest
July 2024 - Present
Developing innovative projects focused on IoT and embedded systems using ESP32 and AI technology. Specializing in hardware-software integration to create efficient and creative solutions.
Samsung Innovation Campus
Embedded System Developer
May 2024 - July 2024
Gained hands-on experience in embedded systems programming, microcontroller development, and sensor integration. Worked on IoT-based smart device projects with an emphasis on power efficiency and wireless communication.
Education
Telkom University
Informatics
September 2025
During my first semester at Telkom University, I focused on strengthening my core foundation in computational thinking and mathematics. I studied mathematical logic, calculus, and statistics, which helped me sharpen my analytical mindset and problem-solving skills.
SMAN 1 Bobotsari
Master in Cinematography
July 2022 - July 2025
Studied cinematography techniques, camera operations, and professional video editing to produce high-quality digital storytelling and documentation.
Recent Works
Here are some of my favorite projects I have done lately. Feel free to check them out.
DIY Heat Plate
The Heat Plate Controller OLED/16x2 I2C is a microcontroller-based temperature controller using a relay and thermistor, with real-time display via OLED or 16x2 I2C LCD. It allows temperature adjustment with a rotary encoder and automatically controls heat, perfect for DIY soldering stations or compact heating devices.
- Open Source
- DIY
- ATmega8/168/328
ESP32 Digital Photo Frame
This project is a special creation made with love and tech, a digital keepsake designed to celebrate graduation and create lasting memories for my friends and loved ones. It’s more than just electronics, it’s a symbol of connection, gratitude, and unforgettable moments.
- Open Source
- DIY
- ESP32
KATO Macro by Exter
KATO Macro is more than just a keyboard, it’s a compact, powerful, and personal input device designed to make your daily digital workflows smoother, faster, and a lot cooler.
- CC BY-NC 4.0
- Open Source
- DIY
- ESP32
Since Day One
Dolores velit qui quos nobis. Aliquam delectus voluptas quos possimus non voluptatem voluptas voluptas. Est doloribus eligendi porro doloribus voluptatum.
- Website
Sand Dunes
Proin gravida nibh vel velit auctor aliquet. Aenean sollicitudin, lorem quis bibendum auctor, nisi elit consequat ipsum, nec sagittis sem nibh id elit.
- Illustration
Minimalismo
Quisquam vel libero consequuntur autem voluptas. Qui aut vero. Omnis fugit mollitia cupiditate voluptas. Aenean sollicitudin, lorem quis bibendum auctor.
- Branding
- Product Design
I saw how he worked on the EUREKA ITB project (earthquake vibration detector), and honestly he did a solid job, I’d say 4/5 for handling his tasks. What stood out the most was his teamwork, super smooth and supportive, easily a 5/5. He’s got good communication skills too.
He showed great dedication and strong technical skills in designing the earthquake detector during the EUREKA competition. His teamwork and communication made the process smooth and efficient. Overall, a reliable and professional teammate who always delivers.
Get In Touch
I loves to hear from you. Whether you have a question or just want to chat about IoT, embedded system even app design, shoot me a message.