Celestial AI Interview Guide

Based on 3 interview reportsUpdated weekly

Everything we know about interviewing at Celestial AI: what each round tests and compensation by level.

Project ManagerEmbedded EngineerQA EngineerSoftware Engineer

01Skills

What Celestial AI evaluates

How often each skill shows up across reported interview loops.

Technical Program Management100%Semiconductor Packaging Design100%Heterogeneous Integration95%Semiconductor Industry95%Photonic Fabric91%Systems-on-Chip (SoC)90%IP Development86%Cross-Functional Collaboration84%Package Layout Expertise83%High-Speed Interfaces79%Risk Management77%2.5D and 3D Package Design75%

02Role guides

Interview guides by role

Each guide has the questions Celestial AI interviewers actually ask, the loop structure, and total compensation by level.

4roles

Embedded Engineer

What is an Embedded Engineer at Celestial AI? As an Embedded Engineer at Celestial AI, you play a pivotal role in the development of cutting-edge firmware that manages high-speed interconnects within complex hardware systems. This position is crucial as it directly influences the performance of the company’s innovative Photonic Fabric™...

$20000k–$22000kView

Project Manager

1. What is a Project Manager at Celestial AI? At Celestial AI, the role of a Project Manager—specifically designated as a Technical Program Manager (TPM)—is central to our mission of revolutionizing data center infrastructure. We are moving beyond traditional System-on-Chip (SoC) limitations to create "systems of chips" through our proprietary...

$120k–$700kView

QA Engineer

What is a QA Engineer at Celestial AI? As Generative AI continues to push the boundaries of modern computing, the fundamental architecture of data centers is shifting from systems-on-chip (SOCs) to expansive systems of chips. At Celestial AI, we are pioneering this transition with our Photonic Fabric™, a next-generation optical...

$19500k–$22500kView

Software Engineer

What is a Software Engineer at Celestial AI? At Celestial AI, the role of a Software Engineer is inextricably linked to the physical reality of our hardware. We are not a traditional SaaS company; we are architecting the Photonic Fabric™, a technology that fundamentally breaks the "Memory Wall" in accelerated...

$16500k–$24500kView

03Compensation

What Celestial AI pays, by level

Estimated total compensation: base salary plus stock and annual cash bonus.

Median $21000k

LevelBaseStockBonus / yrTotal comp

Director of Product$400k–$700k——$400k–$700k

Principal Product Manager$300k–$500k——$300k–$500k

Senior Product Manager$200k–$350k——$200k–$350k

Product Manager$150k–$250k——$150k–$250k

Associate Product Manager$120k–$180k——$120k–$180k

Ranges blend verified compensation data points · base + stock + annual bonus shown. Estimates only.

04FAQ

Celestial AI interview FAQ

Answered from real candidate and workplace data, marked up for rich results.

How hard is the Celestial AI interview?

Candidates most commonly rate Celestial AI interviews as medium, based on 3 reported interviews.

How much does Celestial AI pay for data roles?

Reported total comp for data roles at Celestial AI ranges from roughly $120k to $22500k per year, varying by level, team, and location.

What topics does Celestial AI test in interviews?

Celestial AI interviews most often cover Cross-Functional Collaboration, Technical Program Management, Semiconductor Packaging Design, Heterogeneous Integration, and Semiconductor Industry. The exact emphasis depends on the specific role you apply for.

What roles can I prepare for at Celestial AI?

Dataford has interview guides for 4 roles at Celestial AI, including Embedded Engineer, Project Manager, QA Engineer, and Software Engineer.

Where is Celestial AI headquartered?

Celestial AI is headquartered in Santa Clara, CA.

05In their words

What people say about Celestial AI

Verbatim snippets pulled from employee and candidate reviews.

Celestial AI fosters a collaborative culture where engineers can focus on impactful product development, supported by a clear vision and minimal workplace politics, enhancing both learning and teamwork across digital and analog teams.

Software Engineer5.0

This company is at the forefront of technology in Silicon Valley, addressing critical customer challenges with innovative solutions and led by a highly experienced executive team that prioritizes hiring top industry talent.

Software Engineer5.0

The startup offers an engaging work environment with a friendly team and supportive management, making the challenges of a niche market feel rewarding.

Software Engineer4.0

Working at this startup offers numerous opportunities for professional growth and skill development in a dynamic environment.

Software Engineer3.0

The company offers a strong work-life balance and fosters a collaborative environment with a multidisciplinary team, providing significant growth opportunities.

Software Engineer5.0

The company offers significant opportunities for professional and financial growth, particularly if it successfully launches its first product, supported by a team of subject matter experts available for mentorship.

Software Engineer3.0