EXPLORE


7.4
7.4
95%
$40 USD / Hour
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India (7:39 AM)
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Joined on July 30, 2007
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8 Recommendations
$40 USD / Hour
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⚡ Professional Embedded Systems & Product Design Expert | 15+ Years Freelance Experience ⚡ For the past 15 years, I’ve been a full-time freelance product designer, delivering high-quality hardware and firmware solutions for both industrial and consumer markets. From concept to prototype to production, I help bring ideas to life, efficiently, reliably, and with long-term support in mind. Whether you need hardware design, sensor data acquisition, power systems, firmware development, or complete system integration, I offer end-to-end solutions tailored to your goals. ✅ What I Offer ⚡ Hardware Design & Prototyping • 15+ years with Altium, KiCad, and Eagle • Expertise in embedded, mixed-signal, and analog systems • Battery and Solar Powered Systems • Sensor integration & industrial IoT hardware • Skilled in SPICE simulation (LTspice, TINA-TI) • Fully equipped in-house lab for testing and validation ⚡ Firmware & Embedded Development • 20+ years of C programming with GCC, SDCC, CCS • STM32, ESP32, Microchip 8/16/32-bit, TI MSP430/MSP432, C2000 • Power-efficient firmware, custom bootloaders, and protocols • FreeRTOS and Bare-Metal programming ⚡ Connectivity & Communication • RS485, CAN, LIN, USB, Ethernet • Wi-Fi, GSM, LTE, LoRa, BLE, Sub-GHz RFs • Any type of sensor/device integration ⚡ Software Integration • Desktop app development using MSVC, GCC • Bridging hardware with desktop tools or automation systems ⚡ Production & Supply Chain Support • BOM cost optimization & component sourcing • Established connections with Chinese manufacturers and supply chain management • Low to mid-volume production support ✅ Why Work With Me • End-to-End Expertise: With 20+ years of experience in electronics and programming, I bring equal proficiency in both hardware design and firmware development, ensuring seamless integration between the two. • Project Ownership: From schematic capture and PCB layout to embedded firmware and system validation, I take full responsibility across the entire development cycle. • Quality Assurance: My work is backed by lab-grade test equipment, simulation tools, and a rigorous validation process to guarantee accuracy and reliability. • Post-Delivery Support: I provide long-term assistance beyond delivery, helping you through product updates, field issues, and lifecycle management. • Intellectual Property Respect: I treat your IP with the utmost confidentiality. Your designs, code, and data are fully protected and never reused or shared. • Reliable Collaboration: Having worked with clients globally, I understand how to communicate clearly, meet deadlines, and deliver results that align with your vision. ✅ Let’s Connect No pressure, no obligation. If you have a concept or challenge you'd like to discuss, feel free to message me. I’m happy to explore how I can help turn your ideas into working, manufacturable solutions.
Verifications
On time
94%
On budget
98%
Accept rate
92%
Repeat hire rate
21%

Schematic,PCB,Firmware,Manufacturing

Schematic,PCB,Firmware,Manufacturing

Schematic,PCB,Manufaturing, Firmware

Schematic,PCB,Manufaturing, Firmware

PCB Design, Firmware, Prototype

PCB Design, Firmware, Prototype

Electronic Load Bank

Custom HMI Development

Custom HMI Development

Custom HMI Development

Custom HMI Development

Custom HMI Development

Custom HMI Development

Custom HMI Development

R&D Product Design

R&D Product Design

R&D Product Design

Schematic,PCB,Firmware,Manufacturing

Schematic,PCB,Firmware,Manufacturing

Schematic,PCB,Manufaturing, Firmware

Schematic,PCB,Manufaturing, Firmware

PCB Design, Firmware, Prototype

PCB Design, Firmware, Prototype

Electronic Load Bank

Custom HMI Development

Custom HMI Development

Custom HMI Development

Custom HMI Development

Custom HMI Development

Custom HMI Development

Custom HMI Development

R&D Product Design

R&D Product Design

R&D Product Design
Satyajit continues to provide great services for PCB design and technical advice.
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Great and fluid communication, deliver on the project in record time. This was my 'test-the-waters' project and now I feel confident that Satyajit will deliver quite well on any future request. I will continue working with him. I strongly recommend him for your project.
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great work. fast and effective.
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Delivered the schematic and layout exactly as requested, with great attention to detail and clear communication throughout. Handled tight space constraints very well. Would gladly work together again.
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Excellent, high quality work and communication
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Experience
Remote Embedded Systems Engineer
Aug, 2017 - Feb, 2024
•
6 years, 6 months
Listo Limited
Aug, 2017 - Feb, 2024
•
6 years, 6 months
Worked as a remote full time employee (work from home) for this company, responsible for hardware design, prototype testing, and firmware development for last mile sensor data collection and cloud transmission via MQTT. Engaged with various wireless connectivity technologies, including ISM band RF links, GSM (M2M), and Wi-Fi. Designed one of the company's best selling products: a solar powered remote data collection and controller unit.

Lisburn, Ireland
Aug, 2017 - Feb, 2024
•
6 years, 6 months
Education
Electronics And Telecommunications Engineering (Gold Medalist)
1995 - 1998
•
3 years

India
1995 - 1998
•
3 years
Certifications
F
Foundation vWorker Member