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About Us
Dium Lucis Technologies (Vibetex) is a Chennai-based startup developing a 65W dual-port GaN USB-C PD charger.
Role Lead Hardware Engineer — Power Stage, Firmware & Prototype Assembly
Responsibilities
Design and validate the 65W AC-DC power stage (QR Flyback / Active Clamp Flyback with GaN FET)
Own schematic capture, PCB layout, and Gerber release end-to-end in KiCad
Select components with focus on reliability, thermal performance, and long-term availability
Integrate power stage with STM32G071 for USB PD 3.0 and PPS functionality
Establish and operate hardware test and validation infrastructure
Lead BIS IS 13252 pre-compliance and certification activities with consultants
Deliver working prototype PCB within 10 weeks of joining
Assemble and debug prototype PCBs using soldering equipment, rework stations, and basic hand tools
Requirements
2–4 years of hands-on experience in switched-mode power supply (SMPS) design
Demonstrated ownership of PCB layout from schematic to manufacturing data
Strong component selection capabilities with reliability-first mindset
Familiarity with embedded C and STM32 ecosystem (ADC, I2C/SPI, EEPROM interfacing)
Comfort working in a fast-paced, factory setup environment
Willingness to work on-site in Chennai
Hands-on prototype assembly experience (SMD soldering, rework, bodge wiring)
Preferred
Experience with GaN FETs or high-frequency (>200 kHz) converter design
Knowledge of USB PD 3.0, UCPD PHY, or PPS protocols
Exposure to BIS, IEC, or UL safety certification processes
Custom magnetics design (transformer / inductor) capability
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