Relativity Space interview questions in 2026: what to expect at every stage
Relativity Space is building the Terran R orbital launch vehicle in Long Beach, California — using a mix of 3D-printed engines and traditional manufacturing for the primary structures. Under CEO Eric Schmidt (who took over in March 2025), the company is pushing toward its first launch in late 2026 with a $2.9 billion contract backlog. That urgency shapes every part of the interview process: Relativity is hiring fast and hiring for people who can deliver hardware on compressed timelines.
Here is what the interview process looks like from the inside — the stages, the types of questions asked by discipline, and what interviewers are actually evaluating.
The interview stages
Relativity's process typically runs 3-5 weeks from first contact to offer. The structure follows a pattern common to hardware-focused aerospace startups:
1. Application and recruiter screen
Relativity receives thousands of applications per role. The first filter is resume-based — the recruiting team looks for relevant technical experience, demonstrated project ownership, and alignment with the specific role. Cover letters are not required and do not appear to significantly influence screening.
Recruiter phone screen (20-30 minutes): A Relativity recruiter calls to verify your background, discuss the role, and assess basic fit. Common questions at this stage:
- Walk me through your resume
- Why Relativity Space specifically?
- What interests you about this role?
- What is your timeline and compensation expectation?
The recruiter is evaluating whether you understand what Relativity does (not just "rockets" — specifically 3D-printed engines, Terran R, the manufacturing approach), whether your experience aligns with the role, and whether you are realistic about the work intensity.
2. Hiring manager technical screen (45-60 minutes)
A phone or video call with the hiring manager — the person you would report to. This is the first real technical conversation and it goes deep quickly.
The manager will pick something from your resume — a project, a design decision, a failure — and ask you to walk through it in detail. They want to understand how you think about problems, what trade-offs you considered, and what you would do differently with hindsight.
Expect the manager to also present a simplified version of a real Relativity problem: a manufacturing trade-off, a structural design question, or a process optimization challenge relevant to the team's work.
3. On-site interviews (4 rounds, 45-60 minutes each)
The on-site is the core of the process. Typically conducted at The Wormhole (Relativity's Long Beach facility), the on-site consists of 4 interview rounds with different interviewers — a mix of engineers, team leads, and cross-functional partners.
4. Offer decision
Interviewers submit independent evaluations. Decisions typically come within 1-2 weeks of the on-site. Offers are competitive — base salary, equity, and signing bonus are all part of the package. There is room to negotiate on equity and start date, with less flexibility on base salary.
Since Eric Schmidt took over as CEO in March 2025, employees report that interview questions have shifted toward execution speed and hardware delivery. Earlier Relativity interviews emphasized innovation and additive manufacturing vision. Current interviews focus more on practical manufacturing experience, timeline management, and demonstrated ability to deliver hardware. The culture pivot from "pure innovation" to "build and fly" is reflected in what interviewers ask about.
Interview questions by discipline
Propulsion engineering
Relativity's propulsion team builds the Aeon R engine — a 3D-printed LOX/methane engine that completed a 475-second full-duration static fire in 2025. Interview questions for propulsion roles focus on combustion fundamentals, manufacturing, and test operations:
Technical questions reported by candidates:
- Walk through the thermodynamic cycle of a gas generator engine. What are the trade-offs vs. staged combustion?
- How would you approach designing an injector for a LOX/methane engine? What parameters matter most?
- Describe a situation where you identified a failure mode in a propulsion system. How did you address it?
- What are the challenges of 3D-printing engine components that operate at extreme temperatures?
- If you see anomalous data during a hot fire test, walk me through your decision process for continuing vs. aborting
- How would you reduce the manufacturing cycle time for a turbopump without compromising reliability?
What they are evaluating: First-principles thermodynamics and fluid mechanics knowledge, practical understanding of engine test campaigns, ability to reason about additive manufacturing constraints on propulsion hardware.
Structures and mechanical engineering
Relativity's structures team builds the Terran R tanks and airframe using friction stir welding for primary structures and additive manufacturing for select components:
Technical questions reported by candidates:
- Derive the hoop stress in a thin-walled pressure vessel. Now, how does that change at a weld joint?
- Compare friction stir welding to TIG welding for aluminum aerospace structures. When would you choose one over the other?
- A structural test produces results 15% below the analytical prediction. Walk me through your investigation approach.
- How would you design a composite overwrap for a metallic propellant tank? What failure modes do you design against?
- Describe your experience with finite element analysis. What assumptions do you check first when validating a model?
- How do you approach fatigue life assessment for a reusable launch vehicle structure?
What they are evaluating: Fundamental structural mechanics, practical manufacturing knowledge (especially welding and additive processes), ability to bridge analysis and test results.
Software engineering
Relativity's software team works on flight software, ground systems, factory automation, and data engineering:
Technical questions reported by candidates:
- Standard coding challenges (CoderPad or LeetCode, easy-to-medium difficulty): array manipulation, tree traversals, graph algorithms
- System design: How would you architect a telemetry processing pipeline for a launch vehicle that produces 10 GB/s of sensor data?
- Embedded systems: Describe how you would implement a fault-tolerant state machine for a flight computer
- Factory automation: Design a system to coordinate 10 industrial robots on a manufacturing line with real-time monitoring
- Describe a time when your software had a production bug. How did you diagnose and fix it?
What they are evaluating: Clean coding, system design at scale, understanding of real-time constraints (for embedded roles), practical problem-solving over algorithmic trivia.
Manufacturing and quality engineering
Relativity's manufacturing team operates both additive manufacturing systems (for engines) and traditional metalworking equipment (for structures):
Technical questions reported by candidates:
- Describe a process improvement you implemented on a manufacturing line. What was the measured impact?
- How do you determine acceptance criteria for an additively manufactured part versus a traditionally machined part?
- Walk me through your approach to root cause analysis when you find a defect in production hardware
- What are the key process parameters for friction stir welding aluminum, and how do you monitor them?
- How would you design a quality control process for a 3D-printed engine component that will operate at 3,000+ degrees?
What they are evaluating: Hands-on manufacturing experience, data-driven process improvement, quality systems knowledge, familiarity with both additive and traditional manufacturing.
Behavioral and culture questions
Every on-site round includes behavioral questions. The themes are consistent:
| Theme | Example Question |
|---|---|
| Urgency | Describe a time you had to deliver critical hardware or software on an aggressive timeline. What did you sacrifice? |
| Ownership | Tell me about a project where you identified a problem no one asked you to solve. What happened? |
| Conflict | How did you handle a disagreement with a colleague on a technical approach? |
| Failure | What is the biggest professional mistake you have made? What did you learn? |
| Adaptability | Describe a time when project requirements changed significantly mid-stream. How did you adapt? |
| Motivation | Why Relativity over SpaceX, Rocket Lab, or Blue Origin? |
The "why Relativity" question is critical. Generic answers about loving rockets or wanting to work on cool technology do not differentiate you. Interviewers want to hear that you understand what makes Relativity's approach distinct — the hybrid manufacturing strategy, the Terran R vehicle architecture, the commercial launch market positioning, or the specific technical problem the team you are interviewing with is solving.
Study the Terran R vehicle architecture in detail — know the number of engines, propellant type, payload capacity, and the manufacturing approach (additive engines, friction stir welded tanks). Read Relativity's published test milestones. Understand the competitive landscape: how does Terran R compare to Falcon 9, Neutron, New Glenn, and Vulcan? Be prepared to discuss your own projects with technical depth — Relativity interviewers will probe deeper than you expect on your resume claims.
What candidates say about the experience
From reported interviews:
Positive feedback: Interviewers are technically strong and genuinely interested in your work. The process moves quickly compared to larger aerospace companies. The facility tour (if included) gives a real sense of the hardware and manufacturing scale. Questions feel relevant to the actual work rather than abstract puzzles.
Negative feedback: Some candidates report inconsistent communication from recruiters — gaps of 1-2 weeks between stages without updates. The intensity of 4 back-to-back technical rounds is draining. Post-Schmidt, some interviewers ask more about your ability to handle stress and long hours, which can feel more like a warning than a question.
Offer timeline: Typically 1-2 weeks after the on-site. Offers include base salary, equity (though the equity structure has changed since Schmidt's controlling stake acquisition), and sometimes a signing bonus. Relocation assistance is available for non-local candidates.
How Relativity's interview compares
| Company | Rounds | Duration | Difficulty | Key Difference |
|---|---|---|---|---|
| Relativity Space | 5-6 total | 3-5 weeks | 3.6/5 | Hardware-focused, manufacturing depth |
| SpaceX | 7-9 total | 5-8 weeks | 3.4/5 | First-principles physics, intensity filter |
| Rocket Lab | 4-5 total | 3-4 weeks | 3.3/5 | Practical, hands-on, less algorithmic |
| Blue Origin | 5-7 total | 4-6 weeks | 3.2/5 | Process-oriented, more structured |
Relativity's interview is more manufacturing-focused than SpaceX's (which emphasizes physics fundamentals) and faster than Blue Origin's (which has more bureaucratic stages). If you have practical hardware experience — building, testing, breaking things — Relativity's process will feel natural.
Browse all 280 Relativity Space jobs on Zero G Talent. For Relativity's full company profile including salaries and culture, see our Relativity Space careers guide. For other interview guides, see SpaceX interview process. Browse all California space jobs.
