Testing & Commissioning Lead

Ryan Mahoney

Why this role is hard · Ryan Mahoney

Most candidates can read schematics and run test scripts without breaking a sweat. The real challenge is finding people who keep their composure and speak up clearly when utility grid delays push back energization schedules. I look for applicants who will immediately pause fleet readiness checks if thermal management systems start acting up, even if it means delaying a project timeline. Too many professionals treat following written procedures as the same thing as making sound commissioning calls. You cannot teach someone to adjust their approach in real time if they only know how to follow a manual.

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.

16 Competency Questions

1 of 16

  1. Discipline

    Power Systems & Fleet Engineering Validation

  2. Job requirement

    BESS & Thermal Management Commissioning

    Conducts thermal imaging and battery management system diagnostics during initial energization and performance tuning.

  3. Expected at Junior

    Core to site-level BESS validation; requires independent operation of diagnostic tools to verify thermal stability and BMS functionality during critical energization phases.

Interview round: Hiring Manager Technical

Recall a project where you oversaw the initial power-up and monitoring of a large-scale battery storage system.

Positive indicators

  • Explains startup sequence clearly
  • Details SOC/SOH tracking methodology
  • Describes tolerance thresholds and reporting
  • Mentions engineering handoff for anomalies

Negative indicators

  • Unclear on BMS interface or startup steps
  • Misses state-of-health tracking entirely
  • Lacks procedure for abnormal readings
  • Confuses commissioning with routine maintenance

13 Attitude Questions

1 of 13

Active Listening

Active Listening is the disciplined practice of fully concentrating on, comprehending, and responding to both explicit technical directives and implicit operational cues during complex testing and commissioning activities. It requires suspending premature judgment, validating frontline realities against theoretical models, and synthesizing cross-disciplinary inputs to ensure safe, compliant, and aligned system validation.

Interview round: Hiring Manager Technical

How do you handle a situation where utility partners and equipment vendors give conflicting technical feedback during a critical validation window?

Positive indicators

  • Seeks objective data to resolve conflicting claims
  • Maintains neutral, structured facilitation of stakeholder input
  • Adjusts validation approach based on synthesized constraints

Negative indicators

  • Sides with the loudest or most senior voice immediately
  • Ignores one party's constraints entirely
  • Fails to document conflicting inputs for later review

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

Describe a scenario where you had to enforce a strict safety validation hold-point with external contractors and internal operations teams who were simultaneously pressuring you to bypass procedural checks to meet a milestone deadline. What specific communication strategies did you use to maintain alignment and uphold the safety standard?

Candidate experience

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

Response time

2 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
Demonstrated execution of electrical subsystem testing, including relay validation, switchgear energization, and fault clearance verification per design schematics.
Hands-on verification of charging infrastructure and battery energy storage systems, including protocol checks, thermal/load monitoring, and safety interlock validation.
Tracking and adjusting electrical consumption profiles to prevent transformer overload and maintain grid stability during peak charging windows.
Preparation of audit-ready commissioning reports, defect tracking, and coordination with operations teams to meet FTA/FRA or equivalent safety standards.

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

Does the resume show relevant prior work experience?

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?

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 diagnosing and resolving an intermittent charger-to-grid handshake failure at a newly constructed depot bay, where civil and electrical vendor milestones are misaligned and first energization is approaching.

Format

approach-walkthrough · 20 min · ~2 hr prep

Audience

Hiring manager, Senior commissioning lead, Site operations representative

What to prepare

  • A structured verbal walkthrough of your diagnostic and resolution steps
  • Optional 1-2 pages of notes or diagrams to reference during the session

Deliverables

  • A 20-minute verbal walkthrough explaining your problem-framing, safety prioritization, and cross-trade coordination approach

Ground rules

  • Slides are optional; focus on narrating your reasoning and decision-making process.
  • You may reference anonymized past experiences if helpful, but do not share proprietary or restricted site data.
  • Assume standard depot commissioning tools and protocols are available.

Scoring anchors

Exceeds
Frames the problem holistically, explicitly prioritizes safety and compliance, asks precise clarifying questions about vendor boundaries, and outlines a clear, adaptive diagnostic path that maintains schedule integrity without compromising standards.
Meets
Provides a logical, step-by-step diagnostic approach that addresses the handshake failure, acknowledges vendor misalignment, and includes basic safety and communication checkpoints.
Below
Jumps to a technical fix without safety framing, ignores cross-trade dependencies, or fails to articulate how they would handle ambiguity or escalate unresolved defects.

Response time

20 min

Positive indicators

  • Surfaces safety and lockout/tagout assumptions before diving into technical fixes.
  • Asks high-information clarifying questions about vendor handoff points and test sequence boundaries.
  • Structures the walkthrough logically: frame the problem, isolate variables, coordinate trades, validate, escalate.
  • Demonstrates intellectual humility by acknowledging ambiguity and outlining fallback protocols.

Negative indicators

  • Jumps straight to a technical solution without framing the safety or coordination context.
  • Ignores the misaligned milestone constraint or assumes unilateral control over other trades.
  • Fails to articulate how they would communicate findings to non-technical operators or vendors.
  • Overlooks regulatory or FTA certification implications during the diagnostic phase.

Work Simulation Scenario

Scenario. You are preparing to energize a newly constructed DC fast-charging bay at a municipal transit depot. The civil contractor finished conduit routing ahead of schedule, but the electrical vendor has not yet submitted final insulation resistance and grounding bond test logs. The utility dispatch window opens in 4 hours, and delaying it pushes the next available slot out by three weeks. You must drive a conversation with the depot site supervisor and utility dispatch coordinator to decide whether to proceed with a conditional energization, delay the window, or implement a phased test approach.

Problem to solve. Determine if the energization can safely proceed given missing documentation, balancing strict FTA safety protocols, contractor schedule pressure, and hard-stop utility constraints.

Format

stakeholder-roleplay · 40 min · ~2 hr prep

Success criteria

  • Articulate clear safety hold-points and documentation requirements
  • Propose a risk-quantified decision path (conditional, phased, or delayed)
  • Maintain firm safety boundaries while acknowledging schedule pressure
  • Establish explicit communication and handoff protocols for the chosen path

What to review beforehand

  • Standard depot energization checklists and FTA safety certification requirements
  • Utility interconnection window scheduling constraints
  • Typical insulation resistance and grounding bond verification thresholds

Ground rules

  • You are driving the discussion and making the final recommendation.
  • Ask clarifying questions before committing to a path.
  • Do not request written deliverables during the session; focus on verbal decision-making and tradeoff navigation.
  • Assume all stakeholders are present in a live coordination call.

Roles in scenario

Marcus Chen, Depot Site Supervisor (cross_functional_partner, played by cross_functional)

Motivation. Hit the construction milestone and clear crew overtime budgets before the window closes.

Constraints

  • Heavy equipment rental expires in 4 hours
  • Crew is already staged and expecting energization

Tensions to introduce

  • Downplays missing logs as routine paperwork that can be submitted post-energization
  • Pushes for a conditional start to avoid costly rescheduling

In-character guidance

  • Remain pragmatic and schedule-focused
  • Acknowledge safety concerns but emphasize operational momentum
  • Provide concrete site constraints only when asked

Do not

  • Do not hand over a pre-solved schedule workaround
  • Do not agree to bypass safety protocols without strong technical justification from the candidate
  • Do not volunteer overtime budget details unless explicitly asked

Elena Rostova, Utility Dispatch Coordinator (skeptical_stakeholder, played by cross_functional)

Motivation. Maintain grid stability and enforce strict compliance documentation before energization.

Constraints

  • 4-hour window is a hard-stop with grid operations
  • Next available slot is 3 weeks out due to regional load balancing

Tensions to introduce

  • Requires explicit go/no-go and documented compliance before authorizing the tie-in
  • Resists conditional starts without verified test baselines

In-character guidance

  • Remain formal, risk-averse, and procedure-focused
  • Answer technical compliance questions honestly
  • Maintain firm stance on documentation requirements

Do not

  • Do not volunteer grid stability data or alternative scheduling options unless asked
  • Do not solve the contractor scheduling conflict
  • Do not lower compliance thresholds to appease the candidate

Scoring anchors

Exceeds
Constructs a phased, risk-quantified energization plan with clear documentation handoffs, explicit safety gates, and stakeholder-aligned monitoring steps.
Meets
Identifies missing logs as a critical hold-point, communicates clearly, and negotiates a rescheduled or tightly monitored conditional window without compromising core safety standards.
Below
Proceeds without documentation, fails to establish a clear decision framework, or compromises safety/compliance boundaries under schedule pressure.

Response time

40 min

Positive indicators

  • Asks for specific missing test parameters and clarifies documentation gaps before deciding
  • Establishes clear safety hold-points and refuses to compromise on critical grounding verification
  • Proposes a phased or conditional energization plan with explicit risk acceptance and monitoring steps
  • Communicates decision rationale transparently to both utility and site teams
  • Maintains firm safety boundaries while acknowledging schedule constraints

Negative indicators

  • Agrees to bypass documentation without a formal risk assessment or monitoring plan
  • Uses vague safety language that leaves hold-points ambiguous
  • Fails to clarify utility window constraints or site operational pressures before deciding
  • Yields to schedule pressure without articulating a technical or compliance rationale
  • Does not establish clear handoff or communication protocols for the chosen path

Progression Framework

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

Power Systems & Fleet Engineering Validation

4 competencies

CompetencyJuniorMidSeniorPrincipal
BESS & Thermal Management Commissioning

Conducts thermal imaging and battery management system diagnostics during initial energization and performance tuning.

Coordinates BESS integration sequences, analyzes thermal runaway mitigation data, and resolves cross-vendor hardware conflicts.

Develops fleet-wide thermal commissioning standards, manages vendor SLAs for battery subsystems, and tracks degradation baselines.

Directs R&D partnerships for next-gen thermal management validation, approves enterprise BMS software update rollouts, and oversees lifecycle cost modeling.

Fleet Readiness & Performance Validation

Performs vehicle-to-infrastructure handshake tests, validates charging curves, and logs operational readiness metrics.

Leads multi-vehicle fleet acceptance testing, optimizes charging schedules based on route data, and resolves interoperability bottlenecks.

Designs program-level readiness frameworks, aligns testing with operational KPIs, and manages stakeholder sign-off processes.

Sets enterprise fleet validation strategies, integrates predictive maintenance models into commissioning, and drives continuous improvement initiatives.

Grid Interconnection & Power Quality Analysis

Measures harmonic distortion, voltage sags, and power factor at the point of interconnection during load bank testing.

Analyzes grid interaction data, configures power quality mitigation equipment, and validates utility interconnection requirements.

Manages grid compliance documentation, coordinates with utility engineers on capacity upgrades, and oversees demand response testing.

Shapes enterprise grid integration strategy, negotiates interconnection agreements at scale, and directs investments in smart grid technologies.

HV Infrastructure & Electrical Safety Validation

Executes field tests on HV components, verifies insulation resistance, and documents safety clearances per site-specific checklists.

Oversees HV validation protocols across multiple sites, troubleshoots complex electrical faults, and mentors junior engineers on safety standards.

Standardizes HV testing methodologies across regional depots, allocates specialized testing resources, and ensures alignment with engineering design specs.

Defines enterprise-wide HV validation frameworks, secures capital for advanced diagnostic tools, and sets strategic safety compliance targets.

Systems Integration & Commissioning Governance

3 competencies

CompetencyJuniorMidSeniorPrincipal
Commissioning Lifecycle Orchestration

Tracks daily commissioning milestones, updates progress dashboards, and coordinates on-site subcontractor schedules.

Manages cross-functional commissioning teams, resolves critical path delays, and ensures resource optimization across concurrent projects.

Oversees regional commissioning portfolios, aligns budgets with execution timelines, and implements standardized reporting frameworks.

Directs global commissioning operations, sets organizational maturity targets, and drives digital transformation of commissioning workflows.

Interoperability & Network Protocol Integration

Configures OCPP/ISO 15118 endpoints, verifies API connectivity, and troubleshoots basic communication failures.

Architects site-level network topology, validates end-to-end data flows, and leads protocol migration efforts.

Standardizes interoperability requirements across vendors, manages cybersecurity integration protocols, and oversees system upgrade planning.

Defines enterprise data architecture standards, champions open-protocol adoption, and aligns integration strategies with long-term technology roadmaps.

Regulatory Compliance & Cybersecurity Assurance

Conducts pre-commissioning safety audits, verifies lockout/tagout procedures, and collects compliance documentation.

Leads cybersecurity penetration testing coordination, ensures adherence to NFPA/NEC standards, and manages audit remediation.

Develops compliance governance frameworks, liaises with regulatory bodies, and oversees risk mitigation strategies.

Sets enterprise security and compliance policies, champions zero-trust architectures for charging networks, and ensures alignment with evolving regulatory landscapes.