Celestial AI Technical Program Manager interview questions & guide 2026

The following questions reflect the patterns found in recent interview experiences. While your specific interview may vary, these categories represent the primary pillars of the Celestial AI evaluation process for a Technical Program Manager.

Technical and Domain Expertise

These questions assess your grasp of semiconductor development lifecycles and your ability to manage technical dependencies.

• How do you manage technical dependencies when working on complex SoC integration?
• Describe a time you handled a significant shift in technical requirements mid-program.

Success at Celestial AI requires a blend of deep technical program management experience and a high degree of adaptability. You should approach your preparation by mapping your past successes to the specific challenges of the semiconductor industry.

Role-Related Knowledge – You must demonstrate a clear understanding of the full semiconductor product lifecycle. Interviewers are looking for evidence that you understand the unique pressures of IP design, validation, and platform-level implementation.

Problem-Solving Ability – You will be evaluated on your ability to structure ambiguous challenges. Be ready to explain your process for breaking down high-level technical goals into manageable, tracked deliverables.

Leadership and Influence – In this role, you will often lead through influence rather than direct reporting lines. Demonstrate your ability to mobilize cross-functional teams and maintain transparency with stakeholders, including executive leadership and tier-one customers.

The interview process at Celestial AI is designed to evaluate both your technical depth and your operational maturity. Candidates should expect a rigorous sequence that moves from initial screenings to deep-dive sessions with cross-functional leaders. The pace is generally fast, reflecting the startup nature of the company, and the culture places a high premium on transparency and data-driven decision-making.

You will likely encounter multiple rounds that test your ability to handle complex programs from conception to delivery. Expect to interact with engineering leads and operations teams, as the role requires a high degree of collaboration across these functions. The process is intended to be a mutual discovery; while you are being assessed, you should also look for evidence of the company’s collaborative and high-learning environment.

The visual timeline above illustrates the typical progression from introductory screens to deep-dive technical and behavioral interviews. Use this to structure your preparation, ensuring you have clear examples of your past work ready for both high-level program strategy discussions and granular, tactical problem-solving sessions.

Program Lifecycle Management

This is the core of the role. You will be evaluated on your ability to shepherd a program from IP development through to silicon validation. Strong performance involves demonstrating a clear, repeatable methodology for managing hardware-software co-development.

Be ready to go over:

• Agile vs. Waterfall in Hardware – How you adapt methodologies to suit the physical constraints of chip development.
• Dependency Tracking – Strategies for managing complex interdependencies across silicon, packaging, and system teams.

Your primary mandate is to drive end-to-end program execution. This involves defining and managing integrated program plans that incorporate schedules, resources, and technical dependencies. You will act as the "connective tissue" for the organization, collaborating closely with silicon, hardware, software, and systems teams to ensure everyone is aligned on the same technical goals.

Beyond internal coordination, you will hold significant responsibility for managing external relationships. This includes providing regular, transparent updates to strategic customers and managing the inevitable escalations that arise in complex hardware development. You will also be expected to lead program reviews and drive initiatives that improve overall organizational efficiency and program excellence.

A successful candidate for the Technical Program Manager role must possess a combination of technical acumen and program management rigor.

• Must-have skills:
  • 10+ years of technical program management experience in the semiconductor industry.
  • Demonstrated experience with IP design, SoC integration, and platform bring-up.
  • Deep knowledge of program lifecycle methodologies (Agile, Waterfall, or hybrid).
  • Proven track record of managing technical engagements with tier-one customers.
• Nice-to-have skills:
  • PMP, PgMP, or other relevant project/program management certifications.
  • Prior experience in high-performance computing or interconnect technology.

Q: What is the typical interview difficulty level? The interviews are generally considered average to challenging, focusing on your specific experience in semiconductor programs. Come prepared to speak in detail about your methodology and how you have handled complex, cross-functional challenges in the past.

Q: How much time should I spend preparing? Given the emphasis on real-world program management experience, prioritize reviewing your past projects and identifying specific examples of risk mitigation, stakeholder management, and successful delivery. A few days of structured reflection on your past experience is usually sufficient.

Q: What differentiates successful candidates? Successful candidates are those who can balance the "big picture" of program strategy with the "nitty-gritty" of hardware engineering dependencies. Showing that you understand the specific pressures of the semiconductor field is a major differentiator.

Q: Is the role fully on-site? Yes, the position is located in Santa Clara, CA, and is an on-site role. Expect to work closely with teams in the office to facilitate the high level of collaboration required for hardware development.

• Show Your Work: When answering behavioral questions, use the STAR (Situation, Task, Action, Result) method to keep your responses structured and easy to follow.
• Be Data-Driven: Celestial AI values transparency; whenever possible, quantify the impact of your programs (e.g., "reduced cycle time by X percent").
• Know the Technology: Familiarize yourself with the basics of Photonic Fabric™ and why it is a game-changer for data centers.
• Clarify Expectations: If a question feels ambiguous, don't hesitate to ask for clarification before diving into an answer.

The Technical Program Manager role at Celestial AI offers a unique opportunity to shape the future of high-performance computing. By focusing on your ability to manage complex hardware lifecycles, influence cross-functional teams, and maintain transparent communication with strategic partners, you can position yourself as an essential asset to the team.

Remember that you can explore additional interview insights, practice questions, and preparation resources on Dataford to further refine your approach. With thorough preparation and a clear articulation of your professional experience, you will be well-equipped to succeed in your interviews.

The compensation data provided above reflects the target base salary for the role in California. This represents the fixed cash component of your offer and is subject to adjustment based on the depth of your experience and the specific scope of the role as determined during the interview process. Keep in mind that as an early-stage startup, your total compensation will likely include significant additional value through equity grants and performance bonuses.