Digital Designer

Job Title

Digital Designer

Role Summary

Design RTL and digital subsystems for ultra-low-power microcontrollers. Work with analog, mixed-signal, and firmware teams to optimize power, performance, and area across the SoC.

This role focuses on practical implementation: writing Verilog, creating verification testbenches, supporting synthesis and timing closure, and participating in silicon bring-up and validation.

Experience Level

Mid-level. 5+ years of digital RTL design experience preferred.

Responsibilities

Primary responsibilities include implementing and verifying digital blocks for low-power microcontrollers and supporting the tapeout and silicon validation process.

• Design and implement digital logic and RTL for microcontroller subsystems using Verilog.
• Develop RTL for peripherals and bus interfaces (AHB/APB/AXI) and low-power digital blocks.
• Write and maintain simulation testbenches and coverage metrics for verification.
• Analyze timing reports, set up synthesis constraints, and optimize for power, performance, and area.
• Support silicon bring-up and debug using logic analyzers, JTAG, and firmware tools.
• Document specifications, design reviews, and verification plans; maintain reusable IP and design flows.
• Contribute to CI pipelines for RTL and test code, and support design closure, tapeout, and post-silicon validation.

Requirements

Must-have skills and technologies for successful performance in the role. Bonus items are listed after must-haves.

• Solid experience with Verilog RTL design (experience level: 5+ years preferred).
• Strong understanding of digital design fundamentals: FSMs, pipelining, CDC, and timing closure.
• Experience with SoC subsystems: timers, UART, I2C/SPI, GPIO, DMA.
• Familiarity with low-power design techniques and microcontroller architectures.
• Proficient with EDA tools: simulators (ModelSim, VCS), synthesis (Design Compiler), STA, linting.
• Proficiency in Python for scripting, test automation, or tooling; version control with Git.
• Clear written and verbal communication skills and experience collaborating across disciplines.

Nice-to-have:

• UVM or formal verification experience.
• Experience with RISC-V architectures.
• Experience with equivalence checking tools.

Education Requirements

Degree in Electrical Engineering, Computer Engineering, or a related technical field is expected; equivalent practical experience is acceptable.

About the Company

Company: ONiO

ONiO designs self-powered microcontrollers and IoT solutions whose chips harvest ambient energy (light, heat, RF) to operate at microwatt power levels. Products include the ONiO.zero wireless microcontroller and reference designs for batteryless devices and sensors.