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
Qualifications
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.
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