Audio Silicon Development Engineer

Job description

Sigma Connectivity is a design house. We are a team of 600 talented engineers, and our main office is in Lund, Southern Sweden. Primarily we run in-house projects focusing on connected products within consumer electronics and IoT devices and we have the capability in terms of people, expertise and labs to realize the most demanding products on the market. In US we have offices in San Jose, San Diego and Seattle. The San Diego office is located close to Palomar Airport in Carlsbad, our office in San Jose is located just by the San Jose airport and our Seattle office is in the heart of Bellevue. As a fast-growing company we are constantly looking for open-minded, talented people who want to take part in our journey. The Sigma Connectivity company culture is about sharing experiences and knowledge and with a Nordic work culture we strive for work-life balance and taking care of people. Within Sigma Connectivity you will never work alone.

JOB OVERVIEW

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Looking for an experienced engineer to design and develop audio-focused analog/mixed-signal ICs, with emphasis on Class-D amplifiers, power management, and audio signal chain blocks. The role spans the full silicon lifecycle from architecture to validation.

Responsibilities:

• Design audio IC blocks (Class-D amplifiers, ADC front-end, analog signal chain)
• Develop analog/mixed-signal circuits (regulators, bandgap, POR, ADC, comparators)
• Perform PVT, Monte Carlo, and layout simulations
• Drive silicon bring-up, debug, and characterization
• Design power management systems for audio applications (multi-voltage, protection circuits)
• Collaborate with layout, validation, and test teams; support customer discussions

Basic qualifications

REQUIRED EXPERIENCE & QUALIFICATIONS

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Education

Bachelor’s or Master’s degree in Electrical Engineering, Electronics Engineering, Microelectronics, or a related field

• Prefer candidates with specialization in Analog / Mixed-Signal IC Design or VLSI
• PhD is a strong plus for advanced design roles

Relevant coursework should include:

• Analog and mixed-signal circuit design
• Semiconductor devices and CMOS design
• Power management and amplifier design
• Experience with SPICE/Cadence tools is highly preferred

Experience

• 6–10 years of experience in analog / mixed-signal IC design
• Proven experience in transistor-level circuit design
• Experience across full silicon lifecycle (design → simulation → layout → bring-up)
• Hands-on experience with silicon validation and debugging

Highly Preferred:

• Experience with audio IC design (e.g., Class-D / Class-AB amplifiers, audio signal chain)
• At least one successful tapeout
• Experience in low-power and high-efficiency designs

Core Technical Skills

• Analog IC design (CMOS transistor-level)
• Mixed-signal circuit design
• Audio architectures (Class-D amplifiers, ADC signal chain)
• Power management (regulators, UVP/OVP, POR)

Simulation & Design Skills

• SPICE simulations (Spectre / HSPICE)
• PVT analysis, Monte Carlo simulations
• Post-layout simulation and parasitic extraction
• Stability, noise, and mismatch analysis

Tools

• Cadence Virtuoso (schematic + layout)
• Spectre / HSPICE / APS
• Verilog-AMS (nice to have)

Silicon & Lab Skills

• Silicon bring-up and characterization
• Bench testing with:
• Oscilloscope
• Signal generator
• Spectrum/audio analyzers

Programming / Automation

• Python / MATLAB (nice to have for test automation)

Preferred additional skills, personal traits and experience

Personal characteristics:

• Team player
• Proactiveness in collaborating and execution
• Flexibility to switch technical context
• Willingness to learn new methods/tools/processes
• Ability to prioritize, multitask, and take ownership
• Strong problem-solving and critical-thinking skills
• Strong communication and interpersonal skills

We offer

The annual salary range for this role is $160,000 - $200,000 per year.

The Annual Salary depends upon various job-related factors such as professional background, training, work experience, location, business needs, and market demand. This range is subject to change and may be modified in the future.

Sigma Connectivity, Inc. also offers a comprehensive benefits package that includes the following:

• Paid Time off/Vacation and Paid Holidays
• 401(k)
• 401(k) matching
• Life insurance
• Flexible Spending Account (FSA): Healthcare and Dependent Care
• Health Savings Account (HSA)
• Paid Parental Leave
• Paid Bereavement Leave
• Employee Assistance Program
• Employee and Customer Referral Program
• For positions in California, long-term and short-term disability insurance