Staff Digital Design Engineer

onsemi; Cork; On-site; EUR 90,000 - 120,000; Full time

Job summary

onsemi in Cork, Ireland seeks a Staff Digital Design Engineer to advance digital controllers for the Treo platform. You will work at the intersection of digital logic, analog control, and system-level IP, shaping platform-wide IP and collaborating with analog, verification, and back-end teams.

You will design and implement FSM-based controllers, deliver reusable RTL, and contribute to verification and back-end flows, while mentoring junior engineers and exploring AI-assisted design approaches.

Qualifications

• 5+ years of relevant experience in digital IC design.
• Strong hands-on experience with digital RTL design, including FSM-based control logic.
• Proven experience designing digital logic interfacing with analog power/clocking systems.
• Solid understanding of clock-domain crossing, reset strategies, low-power techniques, and timing constraints.

Responsibilities

• Architect, design, and implement digital FSM-based controllers for analog power/clocking blocks.
• Deliver robust digital-on-top subsystem IP for the Treo platform.
• Develop clean, maintainable RTL (SystemVerilog/Verilog) for reuse and scalability.
• Collaborate with analog/mixed-signal, verification, and physical design teams to meet timing, power, and area goals.
• Contribute to digital verification activities including testbench development and debugging.
• Support back-end flows, including synthesis, timing closure, and low-power considerations.
• Mentor junior engineers and promote best practices within Core Platform IP team.

Skills

RTL design

FSM-based control logic

Digital verification

CDC

Low-power techniques

Communication

Cross-functional collaboration

Tools

SystemVerilog

Verilog

Synthesis tools

STA

UVM

Job description

Job Description

onsemi is seeking an experienced Staff Digital Design Engineer to join our Core Platform IP organization in Cork, Ireland. This role focuses on the development of digital controllers and digital-on-top subsystems for the onsemi Treo™ platform, enabling next-generation mixed-signal and power management solutions.

The successful candidate will play a key technical role at the intersection of digital logic, analog control, and system-level IP, working closely with analog, verification, and back-end teams. This is an opportunity to influence platform-level IP and contribute to innovative solutions that scale across multiple products.

Responsibilities

• Architect, design, and implement digital FSM-based controllers that manage and interact with analog power, clocking, and mixed-signal blocks
• Deliver robust digital-on-top subsystem IP in support of the onsemi Treo™ platform
• Develop clean, maintainable RTL (SystemVerilog / Verilog) suitable for reuse and scalability
• Collaborate closely with:
  • Analog and mixed-signal designers to define control interfaces and behavior
  • Verification engineers to ensure functional correctness
  • Physical design teams to support timing, power, and area goals
• Contribute to digital verification activities, including:
  • Testbench development
  • Block-level and subsystem-level verification
  • Debug and root-cause analysis
• Support digital back-end flows, including synthesis, timing closure, and low-power considerations
• Mentor junior engineers and contribute to best practices within the Core Platform IP team
• Stay technically curious and engaged, particularly around emerging AI-assisted methodologies for digital design and verification

Required Qualifications

• 5+ years of relevant experience in digital IC design
• Strong hands-on experience with digital RTL design, including FSM-based control logic
• Proven experience designing digital logic that interfaces with analog power and clocking systems
• Solid understanding of digital design fundamentals:
  • Clock-domain crossing (CDC)
  • Reset strategies
  • Low-power techniques
  • Timing constraints
• Experience with digital verification, including simulation-based verification
• Exposure to digital back-end flows, such as synthesis, STA, and handoff to physical design
• Strong problem-solving skills and a system-level mindset
• Excellent communication skills and ability to work in a cross-functional environment

Preferred / Nice-to-Have Qualifications

• Experience delivering reusable IP or platform-level subsystems
• Familiarity with UVM-based verification environments
• Experience in mixed-signal or power management ICs
• Knowledge of low-power standards (e.g., UPF/CPF)
• Interest in or early adoption of AI/ML tools applied to digital design, verification, or productivity workflows

About Us

onsemi (Nasdaq: ON) is driving disruptive innovations to help build a better future. With a focus on automotive and industrial end-markets, the company is accelerating change in megatrends such as vehicle electrification and safety, sustainable energy grids, industrial automation, and 5G and cloud infrastructure. With a highly differentiated and innovative product portfolio, onsemi creates intelligent power and sensing technologies that solve the world’s most complex challenges and leads the way in creating a safer, cleaner, and smarter world.

More details about our company benefits can be found here: https://www.onsemi.com/careers/career-benefits

About The Team

We are committed to sourcing, attracting, and hiring high-performance innovators, while providing all candidates a positive recruitment experience that builds our brand as a great place to work.