Electrified Transit Engineering & DeliveryExpert-built kit

OCS Designer / CAD Modeler

Models 3D OCS wire runs and structural foundations, drafts alignment plans, verifies clearances, coordinates clashes, and generates hardware schedules.

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Interview content for OCS Designer II

32
What to ask. Competency and attitude questions, assigned to the right round.
260
What to listen for. Positive and negative indicators, per question.
8
What the hire must do. Capabilities with expected proficiency at each level.

Look inside: one question, as it appears in the kit

Pick the level you’re hiring. The sample changes with the level you select.

Round 2 · Hiring Manager Technical Assessment17 competency questions

CAD Drafting & Structural Design Fundamentals

2D Drafting & Layout Generation

Independently generates complex multi-view drawings, applies dimensioning standards, and manages drawing revisions autonomously.

Expected at OCS Designer II

Sample competency question

Share an experience where you produced a complete set of layout drawings for a long linear infrastructure project. How did you approach the workflow from initial setup to final issuance?

Ask once, as written, then allow silence. A helpful rephrase may hand the candidate the answer.

Positive indicators

  • Uses standardized templates and checklists
  • Tracks revisions with clear logs and clouding
  • Anticipates reviewer needs in layout structure
  • Communicates changes clearly across drawing sets
  • Validates outputs against project standards

Negative indicators

  • Relies on ad-hoc layer naming conventions
  • Ignores formal version control processes
  • Submits drawings without self-verification
  • Struggles to explain revision methodology
  • Inconsistent annotation across multiple sheets

OCS Designer II must reliably produce complete alignment and detail drawings without direct supervision to meet milestone deliverables and maintain <1% RFI rates.

Ryan Mahoney

Why this role is hard · Ryan Mahoney

The hardest part is finding a modeler who can keep an entire corridor layout in mind while working smoothly with civil and electrical teams. You need someone who actually reads the field notes and spots clearance issues before they turn into costly rework. Most candidates breeze through the software test but fall apart when asked to reroute wires around surprise structural beams. What you really want is a careful worker who respects both the plans and the people building them.

Everything in the download, in the order you’ll use it

Level guides for CAD Designer I, OCS Designer II, Lead OCS Designer and OCS Technical Authority.

Before you post

  • 1Ready-to-use job description
  • 2Video screening prompts
  • 8Resume screening criteria
  • 2Knockout screening questions

In the room

  • 17Competency interview questions
  • 15Attitude interview questions
  • 1Hands-on work simulations
  • 1Presentation prompts

At the debrief

  • Progression framework
  • Exceeds / Meets / Below anchors for every exercise
  • 4Interview plan with time per round

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.

17 Competency Questions

1 of 17

  1. Discipline

    CAD Drafting & Structural Design Fundamentals

  2. Job requirement

    2D Drafting & Layout Generation

    Independently generates complex multi-view drawings, applies dimensioning standards, and manages drawing revisions autonomously.

  3. Expected at OCS Designer II

    OCS Designer II must reliably produce complete alignment and detail drawings without direct supervision to meet milestone deliverables and maintain <1% RFI rates.

Interview round: Hiring Manager Technical Assessment

Share an experience where you produced a complete set of layout drawings for a long linear infrastructure project. How did you approach the workflow from initial setup to final issuance?

Positive indicators

  • Uses standardized templates and checklists
  • Tracks revisions with clear logs and clouding
  • Anticipates reviewer needs in layout structure
  • Communicates changes clearly across drawing sets
  • Validates outputs against project standards

Negative indicators

  • Relies on ad-hoc layer naming conventions
  • Ignores formal version control processes
  • Submits drawings without self-verification
  • Struggles to explain revision methodology
  • Inconsistent annotation across multiple sheets

15 Attitude Questions

1 of 15

Active Listening

Active Listening is the disciplined practice of fully concentrating on, understanding, and retaining verbal and non-verbal input from stakeholders, field personnel, and cross-disciplinary teams, while deliberately suspending premature drafting or decision-making impulses. In the context of OCS design and CAD modeling, it involves systematically capturing nuanced operational constraints, reconciling conflicting technical priorities, and accurately translating diverse human insights into precise digital models without losing critical details during iterative revisions.

Interview round: Recruiter Screen

A field supervisor points out recurring installation difficulties with your standard hardware details during a progress review. How do you handle their input while updating the next drawing set?

Positive indicators

  • Seeks specific dimensions or workflow bottlenecks from the supervisor
  • Validates adjustments against clearance standards before release
  • Updates drawing notes to reflect constructability improvements

Negative indicators

  • Dismisses field feedback as non-standard
  • Makes immediate model changes without verifying constraints
  • Fails to document the rationale for the revision

Supporting Evaluation

How candidates earn the selection conversation

The goal is to reduce effort for everyone by collecting more useful signals before adding more interviews. Lightweight application prompts and structured screens help your team focus interview 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.

Knock-out Questions

1 of 2

Application Screen: Knock-out

Do you hold an active vendor certification or documented advanced proficiency in at least three of the following platforms: MicroStation, AutoCAD Civil3D, Autodesk Revit, or Bentley Substation?

Yes
Qualifies
No
Auto-decline

Video-Response Questions

1 of 2

Application Screen: Video Response

During a multi-discipline clash resolution review, a field supervisor pushes back on your proposed OCS cantilever mast placement, citing physical interference with existing trackside signaling that your model missed. Explain how you would communicate with the supervisor and adjacent engineering leads to resolve the conflict while maintaining project timelines and safety standards.

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
Evidence of developing end-to-end OCS corridor layouts, catenary geometry, and construction-ready deliverables for multi-mile segments.
Evidence of linking field measurements to CAD updates through structured verification walks and spatial calibration.
Evidence of generating material takeoffs, hardware catalogs, and procurement documentation to support construction and reduce delays.
Evidence of guiding junior staff, standardizing drafting protocols, and managing structured revision cycles through peer review.

Does the resume show relevant prior work experience?

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

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

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

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 your approach to resolving recurring clash conflicts between OCS cantilever masts, existing trackside signaling, and depot battery enclosure layouts. Discuss how you would balance constructability, clearance compliance, and hardware schedules without escalating every intersection. Slides are optional; focus on talking through your reasoning.

Format

approach-walkthrough · 20 min · ~2 hr prep

Audience

Lead Designer and cross-disciplinary engineering leads

What to prepare

  • Reflect on past multi-discipline coordination experiences
  • Review standard clash detection workflows and escalation thresholds
  • No new deliverables or slides are required

Deliverables

  • A structured verbal walkthrough detailing your clash resolution methodology
  • Explanation of communication tactics with adjacent disciplines and decision criteria for routing adjustments

Ground rules

  • Focus on your problem-solving framework and coordination tactics
  • Anonymize any specific project data you reference
  • Slides are optional; a clear verbal narrative is sufficient

Scoring anchors

Exceeds
Articulates a highly efficient, proactive clash resolution framework that minimizes escalations, anticipates constructability issues, and maintains strong cross-disciplinary alignment.
Meets
Provides a logical approach to identifying and resolving clashes, demonstrates reasonable escalation thresholds, and coordinates effectively with adjacent teams.
Below
Relies heavily on escalation for minor conflicts, neglects constructability constraints, or lacks a clear communication and decision-making strategy.

Response time

20 min

Positive indicators

  • Surfaces assumptions about spatial tolerances and constructability early in the process
  • Outlines a clear escalation matrix distinguishing routine clashes from systemic conflicts
  • Demonstrates proactive communication strategies with civil and signaling teams
  • Balances clearance compliance with practical hardware scheduling constraints

Negative indicators

  • Escalates every minor conflict without attempting independent resolution
  • Overlooks constructability or installation access in favor of pure geometric clearance
  • Communicates routing changes reactively rather than proactively coordinating with adjacent teams
  • Fails to establish clear decision criteria for when to adjust alignment versus redesign hardware

Work Simulation Scenario

Scenario. You are responsible for a multi-mile OCS corridor segment where recurring clash conflicts have emerged between OCS cantilever masts, existing trackside signaling equipment, and newly planned depot battery enclosure layouts. You have access to the latest point-cloud scans, but the signal team and depot operations team have conflicting spatial requirements.

Problem to solve. Walk us through how you would diagnose the root cause of these clashes, gather necessary inputs, and propose a routing or layout adjustment strategy that balances clearance compliance, hardware schedules, and constructability.

Format

discovery-interview · 40 min · ~2 hr prep

Success criteria

  • Diagnose clash root causes systematically
  • Identify critical vs negotiable constraints
  • Propose tactical routing adjustments within guidelines
  • Document decision rationale for peer review

What to review beforehand

  • Point-cloud clash report summary
  • OCS clearance envelope standards

Ground rules

  • Focus on your investigative and decision-making process
  • Ask for data or constraints as needed
  • No deliverable production; discuss your approach

Roles in scenario

Lead Systems Integrator (informed_partner, played by peer)

Motivation. Ensure clashes are resolved efficiently without compromising safety or delaying hardware procurement.

Constraints

  • Depot battery enclosures have fixed footprints
  • Signal equipment requires minimum maintenance access
  • OCS clearance must meet FRA/AREMA standards

Tensions to introduce

  • Signal team refuses to relocate due to active testing schedules
  • Depot layout was approved last week, leaving little room for OCS offset
  • Hardware procurement is locked, limiting bracket substitution options

In-character guidance

  • Provide honest answers about fixed vs movable elements
  • Clarify regulatory boundaries when asked
  • Acknowledge schedule pressures realistically

Do not

  • Do not volunteer relocation feasibility without being asked
  • Do not coach the candidate toward a specific routing solution
  • Do not withhold standard clearance values if queried

Scoring anchors

Exceeds
Methodically isolates root causes, maps constraint dependencies, and proposes a precise, standards-compliant adjustment strategy with clear validation steps and minimal schedule impact.
Meets
Identifies key spatial conflicts, asks appropriate clarifying questions, and suggests reasonable routing or layout tweaks that align with clearance guidelines.
Below
Fails to differentiate fixed vs flexible constraints, proposes arbitrary re-routing, or defaults to escalation without attempting independent resolution.

Response time

40 min

Positive indicators

  • Systematically probes each discipline's fixed and flexible constraints
  • Distinguishes between regulatory hard limits and negotiable spatial buffers
  • Proposes targeted routing adjustments with clear impact analysis
  • Articulates a peer-review and validation plan before finalizing changes

Negative indicators

  • Assumes one team should automatically yield without analyzing constraints
  • Proposes re-routing without checking clearance tolerances or procurement impacts
  • Avoids asking about underlying regulatory or schedule boundaries
  • Jumps to escalation instead of attempting tactical resolution within guidelines

Progression Framework

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

CAD Drafting & Structural Design Fundamentals

4 competencies

CompetencyCAD Designer IOCS Designer IILead OCS DesignerOCS Technical Authority
2D Drafting & Layout Generation

Produces basic 2D layouts and orthographic projections using established templates and layer conventions under direct supervision.

Independently generates complex multi-view drawings, applies dimensioning standards, and manages drawing revisions autonomously.

Develops standardized drawing templates, establishes layer and annotation protocols, and reviews subordinate work for compliance to ensure drafting consistency across project deliverables.

Defines enterprise drafting standards, validates cross-project layout consistency, and approves final drawing baselines for construction release.

3D Solid Modeling & Assembly

Constructs basic 3D parts and simple assemblies following step-by-step instructions and predefined feature libraries under supervision.

Builds complex multi-part assemblies, applies mate constraints, and generates exploded views and sectional cuts for review.

Architects modular assembly frameworks, defines top-down design methodologies, and optimizes model regeneration performance to enable efficient multi-user collaboration and complex geometry management.

Establishes enterprise assembly architecture standards, validates large-scale digital twin integrations, and approves critical spatial configurations.

Parametric Design & Configuration

Modifies existing parametric models by adjusting predefined variables and updating associated drawing views under guidance.

Creates custom parameters, establishes design equations, and configures family tables for variant component generation.

Develops enterprise configuration management strategies, implements rule-based design automation, and mentors teams on parametric best practices to scale design output efficiently.

Defines master parametric frameworks, integrates computational design scripts, and governs cross-domain configuration control.

Structural Detailing & Clearance Validation

Performs basic interference checks and applies standard tolerances to simple components under guidance.

Conducts comprehensive clash detection, applies GD&T standards, and documents clearance requirements for manufacturing.

Establishes tolerance stack-up analysis procedures, defines clearance envelopes, and resolves complex spatial conflicts to ensure structural integrity and operational compliance.

Approves structural tolerance baselines, validates clearance compliance for integrated systems, and sets enterprise interference resolution protocols.

Systems Integration & Infrastructure Delivery

4 competencies

CompetencyCAD Designer IOCS Designer IILead OCS DesignerOCS Technical Authority
Construction Documentation & Deliverable Control

Compiles drawing sets, applies standard title blocks, and tracks basic revision history under supervision.

Manages document control workflows, ensures specification compliance, and coordinates submission packages with project managers.

Establishes document control procedures, implements automated publishing pipelines, and audits deliverable quality prior to release to ensure construction-ready accuracy and compliance.

Governs enterprise documentation standards, approves final construction baselines, and ensures regulatory compliance across all deliverables.

Electrical Routing & Conduit Layout

Draws basic electrical routes and places standard conduit fittings following predefined routing guides under supervision.

Independently routes complex cable networks, calculates fill ratios, and coordinates with structural elements to avoid conflicts.

Develops standardized routing libraries, optimizes pathway layouts for constructability, and establishes electrical clearance protocols to ensure safe and efficient infrastructure deployment.

Defines enterprise electrical routing standards, validates high-voltage clearance compliance, and approves final conduit baselines for field installation.

Infrastructure Systems Integration

Imports and aligns subsystem models into master files, ensuring basic coordinate system alignment and data integrity.

Links external discipline models, validates interface points, and manages data exchange formats across design teams.

Develops integration protocols, establishes model federation schedules, and ensures cross-system functional validation to deliver cohesive, interoperable infrastructure representations.

Defines enterprise integration architecture, governs interoperability standards, and validates system-wide digital twin readiness.

Multi-Discipline Coordination & Clash Resolution

Participates in coordination meetings, flags obvious clashes, and updates models based on senior designer directives.

Runs routine clash detection reports, categorizes conflicts by discipline, and proposes resolution strategies to project teams.

Leads cross-discipline coordination sessions, establishes clash tolerance matrices, and implements resolution tracking workflows to proactively eliminate spatial conflicts before construction.

Architects enterprise coordination frameworks, defines acceptable interference thresholds, and authorizes final integrated model releases.