Mixed-Signal Behavioral Modeling Engineer Seattle, WA

Mixed-Signal Behavioral Modeling Engineer

Seattle, WA

K2 is building the largest and highest-power satellites ever flown, unlocking performance levels previously out of reach across every orbit. Backed by $450M from leading investors and $500M in signed contracts across commercial and U.S. government customers, we’re mass-producing the highest-power satellite platforms for missions from LEO to deep space.

The rise of heavy‑lift launch vehicles is shifting the industry from mass constraint to mass abundance, and we believe this new era demands a fundamentally different class of spacecraft. Engineered to survive harsh radiation environments and fully capitalize on today’s and tomorrow’s massive rockets, K2 satellites deliver unmatched capability at constellation scale across multiple orbits.

With multiple launches planned through 2026 and 2027, we're Building Bigger to develop the solar system and become a Kardashev Type II (K2) civilization. If you are a motivated individual who thrives in a fast‑paced environment and excited about contributing to a groundbreaking Series C space startup, we’d love for you to apply.

We are seeking a Mixed‑Signal Behavioral Modeling Engineer to own the creation of behavioral modeling and drive mixed‑signal verification methodology from the ground up. You will be part of a collaborative design team developing state‑of‑the‑art mixed‑signal SoCs to be hosted on the largest, most powerful satellites ever deployed in space. Your work will directly influence top‑level integration and silicon tape‑out success.

This is a high‑impact, technical role with significant ownership across modeling, methodology, verification, and cross‑functional alignment with RF, analog, and digital teams.

• Develop high‑level behavioral models for analog and mixed‑signal IP (ADCs, DACs, PLLs, LDOs, RF front‑end blocks, biasing, amplifiers, etc.).
• Develop regression infrastructure and mixed‑signal test benches enabling co‑simulation (digital + analog).
• Integrate AMS models into digital verification environments (UVM‑based).
• Define and build the mixed‑signal verification methodology for top‑level SoC and subsystem verification.
• Support architectural exploration through early‑phase modeling and system‑level simulations.
• Collaborate with analog/RF designers to capture real‑world analog behaviors and map them into accurate behavioral abstractions.
• Work with digital and verification teams to ensure seamless integration of AMS models.
• Provide modeling and verification insights during architectural reviews, PDR/CDR, and silicon bring‑up.
• Act as technical leader and subject‑matter expert.

• M.S. or Ph.D. in Electrical Engineering, Computer Engineering, or related field.
• 2+ years of experience in analog/mixed‑signal modeling and/or AMS verification.
• Hands‑on experience with System Verilog, Verilog‑AMS, VHDL‑AMS, or equivalent modeling languages.
• Strong understanding of analog/mixed‑signal circuits (PLLs, LDOs, ADC/DACs, RF/IF paths, clocking, amplifiers).
• Experience with mixed‑signal co‑simulation environments (Cadence AMS Designer, Synopsys VCS‑AMS, or similar).

• Experience building AMS verification methodologies from scratch.
• Familiarity with UVM‑based verification and digital design flows.
• Knowledge of signal processing theory, RF system modeling, or communication systems.
• Experience with MATLAB/Simulink, Python modeling, or SystemC‑AMS for high‑level architectural modeling.
• Experience working in cross‑functional, geographically distributed teams.

• Base salary range $130,000 – $180,000 + equity.
• Salary based on knowledge, skills, education, and experience level.
• Comprehensive benefits package including paid time off, medical/dental/vision, life insurance, paid parental leave, and additional perks.

If you don’t meet all the preferred qualifications, we encourage you to still apply.

As defined in ITAR, “U.S. Persons” include U.S. citizens, lawful permanent residents and certain protected individuals. The person hired for this role will have access to information controlled by U.S. export control regulations. The role requires that the employee be a U.S. person or otherwise eligible for a federal export control license.

K2 Space is an Equal Opportunity Employer. Employment is governed on merit and qualifications and is not influenced by race, color, religion, gender, national origin, veteran status, disability status, age, sexual orientation, gender identity, marital status, or any other legally protected status.