Skip to content
Gridline logo

Controls Engineering · Role - Controls Engineers

Controls Engineers and the Logic They Are Accountable For

Controls engineers design the overall control architecture that ties field devices, PLCs, and operator interfaces together. A weak hire here produces a system that programs cleanly but fails to control the process.

Role overview

What controls engineers do

Controls engineers own the architecture that connects field instrumentation, PLCs, drives, and human-machine interfaces into a working control strategy. They write control narratives, design I/O architecture, and specify how systems fail safely. This is a broader, more architectural role than PLC programming alone, and it requires understanding the physical process being controlled, not just the code.

Hiring is difficult because the title 'controls engineer' gets applied loosely to pure PLC programmers, panel designers, and true systems architects. Without a technical screen, companies often hire a programmer for an architecture role and then face a control strategy that does not scale. We separate architecture-level candidates from programming-only candidates before submission.

Scope of work

Core responsibilities

We screen against these responsibilities directly rather than against job-title history.

  • Design control system architecture and I/O strategy
  • Write control narratives and functional design specifications
  • Specify PLCs, drives, instrumentation, and network topology
  • Review and approve programming against the control narrative
  • Support FAT and SAT for control system delivery
  • Coordinate control system design with process and electrical engineering

Screening criteria

Skills and credentials we verify

Technical skills

  • Control narrative authoring
  • Studio 5000
  • Ignition
  • Industrial networking (EtherNet/IP, Profinet)
  • I/O architecture design
  • Functional safety basics
  • AutoCAD Electrical
  • P&ID interpretation

Certifications and licensing

  • ISA CCST
  • PE (Control Systems)
  • OSHA 30
  • TÜV Functional Safety (where applicable)

Grid Method™ screening

What we specifically screen for in this discipline

Platform depth over platform breadth - We verify hands-on programming history on the specific PLC and HMI platforms your plant runs, since listed platforms and deployed platforms are frequently different things.

Deployment

Projects this role supports

  • Process control system architecture
  • Plant-wide control retrofits
  • Control narrative development for new lines
  • Safety instrumented system design support
  • Legacy control system migrations

Market reality

Why this role is hard to fill

  • Title overlap with PLC programmers

    Many candidates labeled 'controls engineer' have only ever programmed against someone else's architecture.

  • Process knowledge is undervalued on resumes

    Understanding the physical process being controlled matters as much as the software platform, and it rarely shows up as a keyword.

  • Legacy system fluency is inconsistent

    Migrating an old control system requires reading undocumented logic, a skill distinct from greenfield design.

Our method

How we recruit controls engineers

  1. Define architecture scope

    Day 1

    We confirm whether you need architecture-level design or programming execution against an existing narrative.

  2. Technical screen

    Candidates walk through a control narrative or I/O architecture they authored end to end.

  3. Process depth check

    We probe understanding of the actual physical process, not just the platform used.

  4. Shortlist delivery

    Days 5–10

    Candidates arrive tagged by architecture versus programming strength.

Answers

Frequently asked questions

Question not covered here? Ask a recruiter directly - you will get a straight technical answer, not a callback from a salesperson.

Next step

Planning a hire for this discipline?

The hiring guide covers candidate profiles, screening criteria, timelines and the mistakes that cost teams the best candidates.

Hire controls engineers without the resume triage

Send the scope and we will return a short slate with written technical assessments, verified credentials and realistic availability.