Design Consultation with Muhammad Bilal J.
Design Consultation with Muhammad Bilal J.
Implemented real-time speech-to-text and AI interaction using OpenAI API
Integrated MEMS microphone (INMP441) for clear, low-power voice capture
Developed audio output system with MAX98357A amplifier for crisp responses
Built complete embedded firmware handling end-to-end voice workflow
Designed custom PCB layout with USB-C, power management, and ESD protection
Created mechanical enclosure for a wearable, ergonomic form factor
Optimized for low power consumption and extended battery life
Suitable for IoT, smart assistants, and wearable tech applications
Get personalized advice on:
Product Design
product design
electronics
pcb design
esp32
electrical design
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About Muhammad Bilal
Embedded Hardware Engineer | PCB Design, IoT & Wearables
97%
Job Success
Cantonment, Pakistan - 8:35 am local time
I am a Top Rated Plus Industrial Designer and Electronics Engineer with 7+ years of experience, specialising in end-to-end product development from concept to production.
My expertise covers PCB design, embedded systems, IoT development, wearable device development, firmware, enclosure design, prototyping, testing, and manufacturing support. I work with platforms such as STM32, ESP32, nRF, Raspberry Pi, and custom embedded hardware to develop reliable and scalable smart products.
What I can help you with:
• Schematic design and PCB layout
• Embedded firmware development
• ESP32, STM32, nRF, Arduino, Raspberry Pi-based systems
• IoT devices with BLE, Wi-Fi, GPS, LTE, and sensors
• Wearable electronics and compact product prototypes
• Battery-powered and low-power hardware design
• Prototype testing, debugging, and improvement
• Gerber, BOM, CPL, STEP files, and manufacturing support
What makes my work different is my complete product development approach. I do not only design a PCB or enclosure separately. I consider electronics, firmware, mechanical fit, compact wearable form factors, component availability, assembly, testing, DFM, and production requirements from the beginning.
This helps reduce redesigns, avoid manufacturing issues, and create products that are practical for real-world use and mass production.
I have worked with international clients on IoT devices, wearable electronics, health monitoring wearables, industrial systems, sensor-based products, smart consumer devices, medical/health monitoring prototypes, and custom embedded hardware.
If you are looking for a reliable engineering partner who can take your idea from concept to working prototype and production-ready product, I can help you build it with a professional, practical, and manufacturing-focused approach.
Regards,
Muhammad Bilal Javaid
What to expect
Schedule the consultation
Choose from the freelancer’s available days and times.
Get advice for your custom needs
Share details about your project and what you want to talk about. The freelancer will review and reach out if they have questions.
Join the Zoom meeting
1-on-1 meeting with the freelancer to discuss your needs and project.
Approve the work
The freelancer will finish up the documents you asked for and send them to you for approval:
Before the consultation
Here’s what Muhammad Bilal will need to know before you meet
- Why you need this product? What is your idea behind this product?
- What is the requirement towards my product?
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KE
Kiran E.
Sep 22, 2025
Muhammad and team are very professional and knowledgeable!
IM
Integrity M.
Jun 6, 2023
JB
John B.
Jul 9, 2026
PCB Design Help
The work was done quickly, within budget, and with high quality. The communication was great, I never felt like I was in the dark and they delivered a great quality product.
AW
Allan W.
Jun 28, 2026
Synthesizer/ Audio Electronic Design Questions
Communication was professional and the team was responsive throughout the engagement. Deliverables were provided on time and they were open to feedback and willing to adapt their process when concerns were raised. It is also worth noting that the work conducted was purely advisory in nature; no schematic design, PCB design, or other engineering deliverables were undertaken as part of this engagement.
I engaged this team specifically for audio electronics and synthesizer design guidance on an ongoing advisory basis. As an electrical engineer, I already had a reasonable understanding of the technical requirements and was primarily looking for practical recommendations, design trade-offs, and experience-based insight drawn from previous work on synthesizers, audio codecs, and similar products. A sounding board, if you will.
The feedback provided was generally well written and technically reasonable; however, it often remained at a high-level, conceptual level and lacked the application-specific reasoning and practical design insight that I was seeking, and that was agreed to, for the particular architecture being discussed. In several cases, the responses remained generic even after additional context and follow-up questions were provided. Much of the information could have been obtained from general reference material or modern AI-assisted tools, whereas I was specifically looking for experience-based judgement, design trade-offs, and practical insights drawn from prior audio product development.
The engagement also involved considerably more process overhead than I expected for what was intended to be a simple technical advisory arrangement, with internal reviews and multiple team members involved where I had expected direct communication with an experienced engineer.
Ultimately, the contract was concluded after the initial round of questions and follow-up discussion, as it became clear that the engagement was not the right fit for my particular requirements.
Overall, the team was professional, but the level of technical depth, application-specific guidance, and the large number of team members involved did not match my expectations for this project. For that reason I have left a 3-star review. This team may still be a good fit for clients seeking PCB design or schematic designs, again, I can only comment on my own experience within this short advisory engagement. But it was ultimately not the right fit for my audio design requirements.
I engaged this team specifically for audio electronics and synthesizer design guidance on an ongoing advisory basis. As an electrical engineer, I already had a reasonable understanding of the technical requirements and was primarily looking for practical recommendations, design trade-offs, and experience-based insight drawn from previous work on synthesizers, audio codecs, and similar products. A sounding board, if you will.
The feedback provided was generally well written and technically reasonable; however, it often remained at a high-level, conceptual level and lacked the application-specific reasoning and practical design insight that I was seeking, and that was agreed to, for the particular architecture being discussed. In several cases, the responses remained generic even after additional context and follow-up questions were provided. Much of the information could have been obtained from general reference material or modern AI-assisted tools, whereas I was specifically looking for experience-based judgement, design trade-offs, and practical insights drawn from prior audio product development.
The engagement also involved considerably more process overhead than I expected for what was intended to be a simple technical advisory arrangement, with internal reviews and multiple team members involved where I had expected direct communication with an experienced engineer.
Ultimately, the contract was concluded after the initial round of questions and follow-up discussion, as it became clear that the engagement was not the right fit for my particular requirements.
Overall, the team was professional, but the level of technical depth, application-specific guidance, and the large number of team members involved did not match my expectations for this project. For that reason I have left a 3-star review. This team may still be a good fit for clients seeking PCB design or schematic designs, again, I can only comment on my own experience within this short advisory engagement. But it was ultimately not the right fit for my audio design requirements.
MS
Miles S.
Jun 2, 2026
Polymer AL PHE
TN
Tommy N.
May 26, 2026
Product Development Specialist Needed for Complete Lifecycle Creation
I requested a product development in car fragrance. There were lots of back and forth, but in the end, we got the mapping of how the product and packaging would look. Engineering were also done, very simple but effective solutions. Although the end product was not created, i will use this as a prototype to show and work with manufacturers.
WW
Warren W.
Apr 27, 2026
Custom PCB Design for Compact Wearable ESP32-S3 Device
Without a doubt one of the best experiences working with Bilal and team. They were easy to communicate with, got the job done, and went above and beyond to make sure I was satisfied.
Evaluating freelancers is tough, and there's nothing worse than making a bad choice. Bilal and team do outstanding work, I give them my highest recommendation.
Evaluating freelancers is tough, and there's nothing worse than making a bad choice. Bilal and team do outstanding work, I give them my highest recommendation.