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Practising for the listing Mechanical Engineer - Structural Simulation. Its requirements are filled in below. When you have an answer you like, paste it with your CV in Career Mirror to see which of the job's skills it shows.

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Mechanical Engineer - Structural Simulation
About the Team

DoorDash Labs is the hardware and autonomy innovation engine at DoorDash. We design, build, and deploy custom robotics and autonomous delivery systems designed to operate safely, efficiently, and reliably in urban environments. We are currently kicking off development on our clean-sheet, next-generation robot platform—rethinking the mobility foundation from first principles to dramatically improve efficiency, payload dynamics, and service lifetime.

About the Role

As a Senior Structural Simulation Engineer (Level IC5) , you will be the foundational structural analysis authority for DoorDash Labs. You will own structural finite element analysis (FEA) across our next-generation robotic platform, working directly on core vehicle architecture—including chassis systems, suspension, closures, and sensor enclosures.

This role will be heavily focused on future-forward designs starting from the early concept phase. In your first 90 days, you will drive our architectural exploration, define early vehicle load cases, and make strategic software ecosystem decisions (including standardizing and driving our commercial commitments around simulation tools). As development advances, you will shift from rapid concept modeling to production-intent structural refinement and physical test-to-simulation correlation.

You’re excited about this opportunity because you will:

• Build From Day Zero: Lead structural concept validation for a ground-up robotic platform, running high-velocity trade studies alongside chassis, suspension, and closures engineers.

• Define Our Tooling & Workflows: Evaluate, select, and operationalize our primary CAE/FEA software tech stack (with an emphasis on ANSYS-based suites), negotiating capabilities and technical fit directly with vendors.

• Establish Load Cases & Criteria: Formulate first-principles structural load cases, fatigue histories, stiffness benchmarks, and failure criteria for dynamic ground vehicle environments where little historical data exists.

• Simulate Critical Vehicle Subsystems: Execute complex static, dynamic, modal, durability, and fatigue analyses on structural enclosures, cast and sheet-metal subframes, linkages, and moving mechanisms.

• Drive Test-Simulation Correlation: Partner with physical test teams to correlate strain gauge, modal shaker, and dynamic field testing data back into simulation models to maximize predictive accuracy.

• Influence Primary Architecture: Act as the math-first checkpoint for mechanical design decisions, steering CAD geometry toward optimized strength-to-weight ratios before parts hit prototype tooling.

We’re excited about you because:

• Deep Structural Domain Expertise: You bring 7+ years of hands-on structural FEA and mechanical simulation experience (or an advanced degree—MS/PhD—with 4+ years) focused on structural integrity, stiffness, fatigue life, and dynamic loading.

• Vehicle & Robotics Systems Background: You have a demonstrated track record analyzing moving vehicle architectures—such as automotive body-in-white (BIW), chassis frames, suspensions, structural battery enclosures, robotics, drones, or high-performance mobility platforms.

• Software Mastery (ANSYS Preferred): You are an advanced user of industry-standard finite element solvers (ANSYS Mechanical/Workbench strongly preferred; Abaqus, OptiStruct/HyperMesh, or LS-DYNA considered) and understand solver theory, element formulations, and convergence troubleshooting.

• First-Principles Mechanical Rigor: You possess strong mathematical and classical mechanics fundamentals; you don’t just hit "solve," but can gut-check stress distributions and shear loads with hand calculations.

• Ambiguity & Green-Field Ownership: You thrive in early-stage product definitions where requirements are fluid, documentation is sparse, and decisions must be made quickly with high technical conviction.

• Cross-Functional Communication: You clearly translate complex FEA stress tensors, fatigue curves, and deflection limits into actionable design guidance for mechanical design engineers and leadership.

Nice to Haves:

• Prior experience establishing or transitioning a company’s CAE software stack from scratch.

• Background in topology optimization, lightweighting cast/extruded aluminum structures, or composite material modeling.

• Direct experience running durability and fatigue analysis on systems subject to rough-road, curb-strike, or cyclic vibrational abuse.

• Working familiarity with CAD tools (e.g., NX, SolidWorks, or Creo) for rapid geometry defeature and design iteration.

Compensation

The successful candidate’s starting pay will fall within the pay range listed below and is determined based on job-related factors including, but not limited to, skills, experience, qualifications, work location, and market conditions. Base salary is localized according to an employee’s work location. Ranges are market-dependent and may be modified in the future.

In addition to base salary, the compensation for this role includes opportunities for equity grants. Talk to your recruiter for more information.

DoorDash cares about you and your overall well-being. That’s why we offer a comprehensive benefits package to all regular employees, which includes a 401(k) plan with employer matching, 16 weeks of paid parental leave, wellness benefits, commuter benefits match, paid time off and paid sick leave in compliance with applicable laws (e.g. Colorado Healthy Families and Workplaces Act). DoorDash also offers medical, dental, and vision benefits, 11 paid holidays, disability and basic life insurance, family-forming assistance, and a mental health program, among others.

To learn more about our benefits, visit our careers page here .

See below for paid time off details:

• For salaried roles: flexible paid time off/vacation, plus 80 hours of paid sick time per year.

• For hourly roles: vacation accrued at about 1 hour for every 25.97 hours worked (e.g. about 6.7 hours/month if working 40 hours/week; about 3.4 hours/month if working 20 hours/week), and paid sick time accrued at 1 hour for every 30 hours worked (e.g. about 5.8 hours/month if working 40 hours/week; about 2.9 hours/month if working 20 hours/week).

The national base pay range for this position within the United States, including Illinois and Colorado.
$139,400 — $205,000 USD

About DoorDash

At DoorDash, our mission to empower local economies shapes how our team members move quickly, learn, and reiterate in order to make impactful decisions that display empathy for our range of users—from Dashers to merchant partners to consumers. We are a technology and logistics company that started by enabling door-to-door delivery, and we are looking for team members who can help us go from a company that is known as the place you order food to a company that people turn to for any and all goods.

DoorDash is growing rapidly and changing constantly, which gives our team members the opportunity to share their unique perspectives, solve new challenges, and own their careers. We're committed to supporting employees’ happiness, healthiness, and overall well-being by providing comprehensive benefits and perks including premium healthcare, wellness expense reimbursement, paid parental leave and more.

Our Commitment to Diversity and Inclusion

We’re committed to growing and empowering a more inclusive community within our company, industry, and cities. That’s why we hire and cultivate diverse teams of people from all backgrounds, experiences, and perspectives. We believe that true innovation happens when everyone has room at the table and the tools, resources, and opportunity to excel.

Statement of Non-Discrimination: In keeping with our beliefs and goals, no employee or applicant will face discrimination or harassment based on: race, color, ancestry, national origin, religion, age, gender, marital/domestic partner status, sexual orientation, gender identity or expression, disability status, or veteran status. Above and beyond discrimination and harassment based on “protected categories,” we also strive to prevent other subtler forms of inappropriate behavior (i.e., stereotyping) from ever gaining a foothold in our office. Whether blatant or hidden, barriers to success have no place at DoorDash. We value a diverse workforce – people who identify as women, non-binary or gender non-conforming, LGBTQIA+, American Indian or Native Alaskan, Black or African American, Hispanic or Latinx, Native Hawaiian or Other Pacific Islander, differently-abled, caretakers and parents, and veterans are strongly encouraged to apply. Thank you to the Level Playing Field Institute for this statement of non-discrimination.

Pursuant to the San Francisco Fair Chance Ordinance, Los Angeles Fair Chance Initiative for Hiring Ordinance, and any other state or local hiring regulations, we will consider for employment any qualified applicant, including those with arrest and conviction records, in a manner consistent with the applicable regulation.

If you need any accommodations, please inform your recruiting contact upon initial connection.

Notice Regarding Use of AI and Automated Tools: To streamline our hiring process, DoorDash utilizes an automated recruitment tool called Metaview.

How it works: Metaview assists our recruiting team by evaluating job related qualifications and characteristics in connection with hiring. The tool is designed and used to support - rather than replace - human decision-making; trained personnel make final decisions with meaningful human review and oversight, and DoorDash does not use Metaview or other AI-enabled tool in a manner that has the effect of subjecting applicants or employees to discrimination based on any protected characteristic or proxy or for engaging in any protected activity under applicable law.

Data Retention, Privacy & Bias Audit: Data collected during this process is retained in accordance with our Candidate Privacy Policy https://help.doordash.com/en-us/legal/article/ax-privacy-notice and applicable state laws. In compliance with New York City Local Law 144, the independent bias audit summary for Metaview is publicly available for review at https://trust.warden-ai.com/metaview/application-review .

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Requirements found

Marketing (must) Compliance Logistics Excel Recruiting (must) Training

What this posting asks for

Level: Senior — The posting asks for 7+ years of experience.

Main responsibilities

Build From Day Zero: Lead structural concept validation for a ground-up robotic platform, running high-velocity trade studies alongside chassis, suspension, …
Drive Test-Simulation Correlation: Partner with physical test teams to correlate strain gauge, modal shaker, and dynamic field testing data back into simulat…

Competencies an interviewer will look for

Technical skill Core
In the posting: “You will own structural finite element analysis (FEA) across our next-generation robotic platform, working directly on core vehicle architecture—including ch…” · “In your first 90 days, you will drive our architectural exploration, define early vehicle load cases, and make strategic software ecosystem decisions (includ…” · “Define Our Tooling & Workflows: Evaluate, select, and operationalize our primary CAE/FEA software tech stack (with an emphasis on ANSYS-based suites), negoti…”
Show it by: Names the tools, languages or systems used and how; Explains a technical choice and its trade-off.
Problem solving Core
In the posting: “Abaqus, OptiStruct/HyperMesh, or LS-DYNA considered) and understand solver theory, element formulations, and convergence troubleshooting.” · “you don’t just hit "solve," but can gut-check stress distributions and shear loads with hand calculations.” · “DoorDash is growing rapidly and changing constantly, which gives our team members the opportunity to share their unique perspectives, solve new challenges, a…”
Show it by: Describes a real problem, the options considered and the one chosen; Shows how the cause was found, not just the fix.
Ownership and accountability Core
In the posting: “DoorDash Labs is the hardware and autonomy innovation engine at DoorDash.” · “We design, build, and deploy custom robotics and autonomous delivery systems designed to operate safely, efficiently, and reliably in urban environments.” · “Ambiguity & Green-Field Ownership: You thrive in early-stage product definitions where requirements are fluid, documentation is sparse, and decisions must be…”
Show it by: Takes a task from start to finish without being chased; Owns a mistake and what was changed after it.
Data and analysis Core
In the posting: “As a Senior Structural Simulation Engineer (Level IC5) , you will be the foundational structural analysis authority for DoorDash Labs.” · “You will own structural finite element analysis (FEA) across our next-generation robotic platform, working directly on core vehicle architecture—including ch…” · “Establish Load Cases & Criteria: Formulate first-principles structural load cases, fatigue histories, stiffness benchmarks, and failure criteria for dynamic …”
Show it by: Uses a number to describe the situation or the result; Explains what the data showed and what was done with it.
Attention to detail and quality Core
In the posting: “We design, build, and deploy custom robotics and autonomous delivery systems designed to operate safely, efficiently, and reliably in urban environments.” · “Drive Test-Simulation Correlation: Partner with physical test teams to correlate strain gauge, modal shaker, and dynamic field testing data back into simulat…” · “Software Mastery (ANSYS Preferred): You are an advanced user of industry-standard finite element solvers (ANSYS Mechanical/Workbench strongly preferred;”
Show it by: Gives an example of an error caught before it caused harm; Names the check or standard they used.
Stakeholder management Core
In the posting: “Define Our Tooling & Workflows: Evaluate, select, and operationalize our primary CAE/FEA software tech stack (with an emphasis on ANSYS-based suites), negoti…” · “Influence Primary Architecture: Act as the math-first checkpoint for mechanical design decisions, steering CAD geometry toward optimized strength-to-weight r…” · “At DoorDash, our mission to empower local economies shapes how our team members move quickly, learn, and reiterate in order to make impactful decisions that …”
Show it by: Shows how they aligned people with different goals; Explains how they handled a 'no' from someone senior.
Communication Core
In the posting: “Ambiguity & Green-Field Ownership: You thrive in early-stage product definitions where requirements are fluid, documentation is sparse, and decisions must be…” · “Cross-Functional Communication: You clearly translate complex FEA stress tensors, fatigue curves, and deflection limits into actionable design guidance for m…”
Show it by: Adapts the message to the listener; Gives an example of explaining something clearly in writing or speech.
Teamwork and collaboration Core
In the posting: “Drive Test-Simulation Correlation: Partner with physical test teams to correlate strain gauge, modal shaker, and dynamic field testing data back into simulat…” · “Cross-Functional Communication: You clearly translate complex FEA stress tensors, fatigue curves, and deflection limits into actionable design guidance for m…”
Show it by: Says what they did inside a team, not only what 'we' did; Shows how a disagreement was handled.
Adaptability and learning Core
In the posting: “Ambiguity & Green-Field Ownership: You thrive in early-stage product definitions where requirements are fluid, documentation is sparse, and decisions must be…” · “For salaried roles: flexible paid time off/vacation, plus 80 hours of paid sick time per year.”
Show it by: Describes learning something new quickly and using it; Shows a change of plan and how they adjusted.
Leadership and mentoring Supporting
In the posting: “Cross-Functional Communication: You clearly translate complex FEA stress tensors, fatigue curves, and deflection limits into actionable design guidance for m…”
Show it by: Describes setting direction or a standard others followed; Names someone they coached and what changed for them.
Planning and organisation Supporting
In the posting: “That’s why we offer a comprehensive benefits package to all regular employees, which includes a 401(k) plan with employer matching, 16 weeks of paid parental…”
Show it by: Shows how priorities were set when everything was urgent; Mentions deadlines met and how.

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Practice questions

Tell me about yourself. Dedicated step-by-step practice.
If an interviewer asks something improper How to respond to questions about age, family, origin or health.
Built from this posting (8):
Walk me through a piece of work where you used your strongest technical skill. What exactly did you do? From this posting
Tell me about a difficult problem you solved at work. How did you find the cause? From this posting
Tell me about a task you took from start to finish without anyone asking you to. From this posting
Tell me about a time you used data or numbers to make a decision. From this posting
How have you used marketing in your work? Walk me through one real example. From this posting
Tell me about a problem you solved using recruiting. From this posting
Tell me about a time you helped someone on your team get better at their work. From this posting
You have three urgent tasks due today and time to finish only two. How do you decide? From this posting
This posting reads as Healthcare: its questions come first.
How do you protect patient privacy in your daily work? Healthcare
Tell me about a time you cared for a patient or family member who was upset or afraid. Healthcare
You notice a medication or chart detail that does not look right. What do you do? Healthcare
Describe a time you worked with doctors, nurses or other staff to solve a problem for a patient. Healthcare
Your shift is short-staffed and several patients need you at once. How do you prioritise? Healthcare
Tell me about a time a procedure or system changed and you had to adapt quickly. Healthcare
Describe a time you explained a care instruction to a patient so they could follow it at home. Healthcare
A patient's family member is angry and blames you for a delay. What do you do? Healthcare
Tell me about a time a shipment or delivery went wrong.
How have you used spreadsheets in your work?
Describe a time you handled an upset customer or colleague.
Tell me about a time you had several deadlines at once. How did you decide what to do first?
Give an example of a mistake you caught before it caused a problem.
Tell me about a time you taught someone how to do something.
Describe a time you took the lead without being asked.
Tell me about a time you had to explain something complicated in simple terms.
Describe a process you improved.
Do you have any questions for us?
Why do you want to work here?
Why is there a gap in your employment? Difficult question
Why did you leave your last job? Difficult question
Why are you changing careers? Difficult question
What is your greatest weakness? Difficult question
What are your salary expectations? Difficult question
You seem overqualified for this role. Why do you want it? Difficult question
Improper-question practice: How old are you? / Do you have children? / Where are you from originally?
A customer is angry about a delay you did not cause. What do you do?
How do you keep track of many open customer requests?
Tell me about a time you could not give a customer what they wanted.
You find that the inventory count does not match the system. What do you do?
How do you make sure safety rules are followed on a busy shift?
Two managers ask you to book the same room at the same time. What do you do?
Tell me about a time you had to enter or check a lot of data accurately.
Tell me about a sale or agreement you are proud of.
A prospect says your price is too high. How do you respond?
How do you keep your pipeline organised?
Tell me about a technical problem you solved on your own.
You find a bug right before a release. What do you do?
Walk me through how you would check whether a report's numbers are right.