Owner's Engineer Lead

Ryan Mahoney

Why this role is hard · Ryan Mahoney

The real challenge in hiring an Owner’s Engineer Lead is finding someone who will hold the line on technical standards without dragging out the schedule. You need a professional who understands battery thermal degradation and grid interconnection, but also knows when to reject flawed work instead of patching it. In interviews I ask them to describe a time they turned down a contractor’s charging station installation. Watch whether they defend the spec with calm authority or get dragged into endless debate. That combination of direct communication and firm boundaries is what actually separates people who just manage tasks from those who run projects.

Core Evaluation

Critical questions for this role

The competency and attitude questions below are where the hiring decision is made. They run in the live interview rounds and are calibrated to the level selected above.

14 Competency Questions

1 of 14

  1. Discipline

    Infrastructure Systems & Engineering

  2. Job requirement

    Charging Infrastructure & Energy Storage

    Validates charging station layouts, verifies battery storage specifications, and conducts commissioning checks to ensure reliable grid-to-vehicle energy delivery.

  3. Expected at Junior

    Charging and storage validation are core to electrified transit projects; project OEs must independently verify layouts, specs, and commissioning checks to ensure system functionality.

Interview round: Hiring Manager Technical Deep Dive

Recall a project where you oversaw the physical installation and initial startup of an electrified transit power system.

Positive indicators

  • Uses structured readiness checklists
  • Verifies against approved drawings
  • Documents baseline metrics systematically
  • Coordinates pre-start issue resolution
  • Prioritizes safety protocols

Negative indicators

  • Starts equipment without readiness verification
  • Ignores drawing discrepancies
  • Fails to record baseline performance data
  • Skips pre-start coordination
  • Overlooks safety or operational checks

10 Attitude Questions

1 of 10

Active Listening

Active Listening is the disciplined practice of fully concentrating on, understanding, and responsively engaging with stakeholders without premature evaluation. It requires cognitively processing verbal and non-verbal cues, synthesizing divergent technical and operational inputs, and explicitly validating underlying concerns to build psychological safety, surface latent risks, and align cross-functional teams toward shared project objectives.

Interview round: Recruiter Initial Screen

How would you structure a commissioning readiness walkthrough to ensure frontline operator concerns are accurately captured and integrated into your compliance verification steps?

Positive indicators

  • Emphasizes active paraphrasing and dedicated logging
  • References operator validation sign-off protocols
  • Balances operational input with compliance requirements

Negative indicators

  • Treats walkthrough as a formal checklist exercise only
  • Ignores operator input during documentation phase
  • Relies solely on pre-written engineering assumptions

Supporting Evaluation

How candidates earn the selection conversation

The goal is to reduce effort for everyone by collecting more useful signal before adding more interviews. Lightweight application prompts and structured screens help the panel focus live time on the candidates most likely to succeed.

Stage 1 · Application

Filter at the door

Runs the moment a candidate hits Submit. Disqualifying answers end the application; everything else is captured for review.

Video-Response Questions

1 of 2

Application Screen: Video Response

A major contractor submits a proposed deviation from the approved depot electrical load calculations, arguing that their alternative design reduces long-term maintenance costs despite exceeding initial capital limits. Internal leadership is pushing for rapid approval to meet commissioning deadlines, while the contractor emphasizes safety implications of the original specification. Describe your step-by-step approach to evaluate this request, communicate your findings to both the contractor and leadership, and establish firm boundaries around the approval process without derailing the project timeline.

Candidate experience

REC
0:42 / 3:00
1Record
2Review
3Submit

Response time

3 min

Format

Recorded video

Stage 2 · Resume Screening

Read the resume against fixed criteria

Reviewers score every application that clears the door against the same criteria. Stronger reviews advance to live interviews; weaker ones are archived without further screening.

Resume Review Criteria

8 criteria
Demonstrates experience evaluating contractor engineering submittals and field installations against agency performance standards and safety codes.
Shows hands-on or analytical involvement with depot electrical load calculations, cooling loop integrity, or battery thermal management systems.
Provides evidence of tracking engineering decisions, managing RFI responses, and maintaining audit trails for technical approvals.
Demonstrates involvement in utility interconnection coordination or commissioning activities for transit charging infrastructure.

Is the resume complete, well-organized, and free from formatting, spelling, and grammar mistakes?

Does the cover letter or personal statement convey clear relevance and familiarity with the job?

Does the resume indicate required academic credentials, relevant certifications, or necessary training?

Does the resume show relevant prior work experience?

Stage 3 · During Interviews

Where the hire is decided

Interview rounds use the competency and attitude questions outlined above, then add tests, work simulations, and presentations that reveal deeper evidence about how the candidate thinks and works.

Presentation Prompt

Walk us through how you would approach reviewing a complex contractor design submittal that contains several deviations from the agency's technical specifications. Discuss your approach to balancing strict compliance with practical field constraints, documenting your rationale, and communicating decisions back to the contractor.

Format

approach-walkthrough · 20 min · ~2 hr prep

Audience

Senior engineering leads and project managers

What to prepare

  • No slides required; you may use a whiteboard or talk through your reasoning.
  • Prepare a brief mental outline of your evaluation framework, risk assessment steps, and communication strategy.
  • Reflect on a past experience or construct a realistic hypothetical scenario to anchor your walkthrough.

Deliverables

  • A structured verbal walkthrough of your review process.
  • Clear articulation of how you assess safety vs. cost tradeoffs and establish approval boundaries.
  • A brief interactive Q&A segment.

Ground rules

  • Use only work you are permitted to share or a constructed hypothetical; do not produce a new checklist or compliance matrix.
  • Focus on process, judgment, and communication rather than technical calculation outputs.
  • Slides are optional; talking through your reasoning is fully acceptable.

Scoring anchors

Exceeds
Systematically frames the problem, balances strict compliance with empathetic stakeholder engagement, establishes clear decision gates, and demonstrates proactive risk documentation.
Meets
Covers key review steps, identifies major compliance and safety risks, communicates boundaries clearly, and outlines a reasonable feedback process.
Below
Dismissive of contractor input, unclear on compliance thresholds, lacks structured approach, or avoids addressing scope and documentation responsibilities.

Response time

20 min

Positive indicators

  • Asks high-information clarifying questions about contractor deviation rationale before forming judgments
  • Surfaces assumptions about safety thresholds and lifecycle cost impacts explicitly
  • Clearly delineates formal approval boundaries and change-control protocols
  • Articulates a structured, repeatable review workflow that includes documentation and feedback loops

Negative indicators

  • Jumps straight to rejection or approval without exploring field constraints or contractor context
  • Uses vague compliance language without defining measurable acceptance criteria
  • Avoids addressing scope creep or informal change requests directly
  • Fails to explain how decisions will be documented and communicated to cross-functional teams

Work Simulation Scenario

Scenario. You are reviewing a critical design submittal for a new transit depot charging installation. The contractor has submitted a formal deviation request proposing an alternative high-voltage cable routing path due to unexpected subsurface utility conflicts. This change impacts thermal management clearances and maintenance access zones. You must evaluate the deviation against agency technical specifications, determine if it meets lifecycle and safety standards, and drive a decision on approval, rejection, or conditional modification.

Problem to solve. Assess the contractor's deviation request for compliance, negotiate necessary technical adjustments, and establish a clear path forward without compromising safety or audit defensibility.

Format

stakeholder-roleplay · 40 min · ~2 hr prep

Success criteria

  • Clearly articulate compliance gaps and acceptance thresholds
  • Maintain professional boundaries while addressing timeline pressures
  • Reach a documented decision that aligns with agency specifications and risk tolerance
  • Preserve collaborative working relationship with the contractor

What to review beforehand

  • Agency technical specification for depot charging infrastructure
  • Standard deviation review workflow and change control procedures
  • Thermal management and clearance requirements for high-voltage routing

Ground rules

  • You are driving the conversation with the contractor
  • Focus on technical compliance, risk allocation, and decision clarity
  • Do not produce a written report during the session; verbalize your reasoning and decision pathway

Roles in scenario

Contractor Project Manager (skeptical_stakeholder, played by cross_functional)

Motivation. Secure a quick verbal approval to avoid schedule delays and cost overruns, believing the proposed routing is functionally equivalent.

Constraints

  • Cannot exceed the original approved budget
  • Must maintain compliance with local fire and electrical codes
  • Facing strict milestone deadlines from their executive team

Tensions to introduce

  • Argue that original specs are overly rigid for this specific site condition
  • Push for a provisional verbal sign-off to keep crews mobilized
  • Question whether the agency is being unnecessarily bureaucratic

In-character guidance

  • Present the deviation as a pragmatic field solution backed by preliminary engineering checks
  • Acknowledge thermal concerns but emphasize modern cable insulation ratings
  • Remain professional but firm on schedule pressures

Do not

  • Do not solve the compliance problem for the candidate
  • Do not escalate into hostility or personal attacks
  • Do not volunteer all site constraints upfront; reveal them only when probed

Scoring anchors

Exceeds
Systematically probes technical and procedural gaps, establishes clear compliance boundaries, documents decision pathways in real-time, and preserves collaborative trust while protecting agency liability.
Meets
Identifies key compliance requirements, asks relevant clarifying questions, maintains appropriate change control boundaries, and delivers a clear conditional approval or rejection with actionable next steps.
Below
Rushes to approve or reject without validating technical assumptions, allows scope creep or informal workarounds, or communicates ambiguously, leaving compliance and accountability unclear.

Response time

40 min

Positive indicators

  • Asks targeted questions about thermal clearance, maintenance access, and code compliance before forming a judgment
  • Clearly distinguishes between negotiable field adjustments and non-negotiable safety/specification thresholds
  • Maintains firm procedural boundaries regarding formal change control while acknowledging contractor timeline pressures
  • Communicates decision rationale and next steps with precise, unambiguous language

Negative indicators

  • Accepts verbal assurances or provisional sign-offs without documented technical validation
  • Uses vague or overly technical language that obscures compliance expectations
  • Yields to schedule pressure by bypassing formal deviation review workflows
  • Dismisses contractor concerns without exploring underlying site constraints or operational realities

Progression Framework

This table shows how competencies evolve across experience levels. Each cell shows competency at that level.

Infrastructure Systems & Engineering

6 competencies

CompetencyJuniorMidSeniorPrincipal
Charging Infrastructure & Energy Storage

Validates charging station layouts, verifies battery storage specifications, and conducts commissioning checks to ensure reliable grid-to-vehicle energy delivery.

Engineers high-power charging networks, optimizes energy storage dispatch strategies, and resolves hardware integration issues across multi-vendor environments.

Directs regional charging infrastructure rollouts, manages grid-to-vehicle energy flows, and scales storage deployments.

Pioneers next-generation charging architectures and advises on vehicle-to-grid (V2G) ecosystem development.

Construction & Site Management

Monitors site construction activities, tracks progress against schedules, and verifies material specifications to ensure field execution aligns with approved plans.

Oversees multi-site construction operations, mitigates field risks, and optimizes contractor performance to ensure synchronized charging and grid deployment.

Directs capital construction programs, standardizes procurement strategies, and controls portfolio-level budgets.

Innovates construction delivery models and advises on sustainable, resilient infrastructure deployment at scale.

Design Compliance & Engineering Oversight

Reviews design documents and verifies compliance with baseline engineering codes and owner specifications through systematic submittal evaluation and deviation tracking.

Manages cross-functional design reviews and resolves technical conflicts across multiple project phases to ensure alignment with owner specifications and regulatory standards.

Establishes enterprise-wide design standards and oversees compliance audits across the program portfolio.

Defines strategic compliance frameworks and advises leadership on regulatory shifts impacting infrastructure design.

Fleet Operations & Maintenance Engineering

Evaluates fleet maintenance protocols, tracks vehicle uptime, and validates operational readiness metrics to support pilot phase commissioning.

Optimizes fleet lifecycle strategies, implements predictive maintenance programs, and manages depot workflows to ensure continuous operational readiness.

Aligns fleet acquisition with operational demand, oversees multi-depot electrification transitions, and controls TCO.

Defines future-state mobility architectures and guides enterprise-wide fleet transformation and sustainability targets.

Grid Integration & Power Systems

Analyzes power system loads and validates grid interconnection designs against utility requirements to ensure safe and compliant energization.

Leads grid integration studies and coordinates with utility partners to resolve capacity constraints and align power delivery with fleet deployment timelines.

Directs regional grid modernization initiatives and aligns power delivery strategies with long-term capacity goals.

Shapes macro-level energy transition policies and pioneers advanced grid-asset integration methodologies.

Interoperability & Standards Testing

Executes interoperability test scripts, documents compliance gaps, and verifies communication protocol adherence across multi-vendor charging and dispatch systems.

Designs validation frameworks for multi-vendor systems, leads certification processes, and troubleshoots integration failures to ensure compliant fleet deployment.

Establishes enterprise testing standards, coordinates cross-organizational certification, and ensures regulatory compliance.

Shapes industry-wide interoperability standards and guides strategic adoption of open-architecture communication protocols.