Maintenance technicians often know more about real automation than they give themselves credit for.

You may already understand:

• Why a motor refuses to start even though the PLC output is on
• How to trace a 24 V DC sensor circuit
• What happens when a VFD loses its enable signal
• Which interlock normally stops a machine sequence
• How operators actually use the equipment
• Which “temporary” repairs have been inside the panel for eight years

That experience is valuable.

The transition to controls engineering is not about abandoning maintenance and becoming a completely different person. It is about moving from reacting to existing machine problems toward designing, programming and improving the systems that control the machine.

A simplified transition looks like this:

Maintenance technician
→ PLC and drive troubleshooting
→ Small controlled modifications
→ Machine-section ownership
→ Controls projects
→ Controls engineer

The difficult part is not learning how to place a timer in ladder logic.

The difficult part is proving that you can design reliable behaviour, document your decisions, test failure conditions and take responsibility for changes affecting production.

The Roadmap at a Glance

A motivated maintenance technician can become ready for a junior controls or automation role within roughly a year.

Becoming a strong independent controls engineer normally requires several years of varied project and commissioning experience.

What Changes When You Become a Controls Engineer?

The two roles overlap, but their primary responsibilities differ.

Maintenance technician

A maintenance technician is usually asked:

Why has this machine stopped?

The work may involve:

• Electrical troubleshooting
• Mechanical repairs
• PLC monitoring
• Sensor replacement
• Drive fault diagnosis
• Preventive maintenance
• Emergency breakdown response
• Restoring production safely

Controls engineer

A controls engineer is more likely to be asked:

How should this machine operate, and how should the control system be designed?

The work may include:

• PLC programming
• HMI and SCADA development
• Electrical-design review
• Hardware selection
• Industrial networking
• VFD and servo integration
• Machine sequencing
• Alarm and diagnostic design
• Safety-system coordination
• Testing and commissioning
• Documentation
• Customer or production requirements

O*NET includes titles such as Automation Engineer, Control Systems Engineer and Controls Engineering Specialist under work involving the design of engineering systems for industrial automation. Automation Technician, PLC Technician and Instrumentation and Controls Technician are grouped with roles focused more heavily on installing, testing and maintaining automated systems.

The difference is not that engineers think while technicians use tools.

The difference is usually scope, ownership and design responsibility.

Your Maintenance Background Is an Advantage

A graduate engineer may know control theory but have limited experience with actual machine failures.

A maintenance technician has already seen:

• Sensors fail intermittently
• Drawings disagree with the physical panel
• Contactors pull in but fail to conduct properly
• Cables break inside moving drag chains
• VFD faults caused by mechanical problems
• Operators discover machine states the designer never considered
• Software changes expose hidden electrical defects

That experience teaches an important lesson:

The PLC program is only one part
of the complete control system.

From my own route through industrial maintenance, electrical troubleshooting and control-panel work, the most valuable habit was learning to follow the whole chain:

Physical condition
→ Sensor
→ PLC input
→ Program decision
→ PLC output
→ Actuator
→ Machine response

A technician who understands that chain can often diagnose problems faster than someone who looks only at the PLC code.

Your goal is to preserve that practical strength while adding the design, programming and project skills expected from an engineer.

Step 1: Decide What Kind of Controls Engineer You Want to Become

“Controls engineer” is not one standard job.

Machine-controls engineer

Common in:

• Packaging
• Material handling
• Machine building
• Warehousing
• Automotive manufacturing

Typical skills:

• PLC programming
• HMI development
• VFDs and servos
• Discrete sequencing
• Industrial Ethernet
• Machine safety
• Commissioning

Process-controls engineer

Common in:

• Food and beverage
• Chemicals
• Water treatment
• Pharmaceuticals
• Energy
• Oil and gas

Typical skills:

• Analog instrumentation
• PID control
• Control valves
• SCADA
• Alarm management
• Batch processes
• Redundancy
• Historian systems

Factory controls engineer

Works within one manufacturing facility and may handle:

• Production support
• PLC modifications
• Obsolescence projects
• Network maintenance
• Machine upgrades
• Data collection
• Contractor management
• Standardisation

This is often the easiest move from factory maintenance.

System-integrator or commissioning engineer

Works across different customers and machines.

Typical responsibilities include:

• New project development
• Site commissioning
• Customer modifications
• Troubleshooting unfamiliar systems
• Travel
• Factory and site acceptance testing

This route provides rapid experience but can involve long days and considerable travel.

Choose the closest first step

A factory maintenance technician usually has a more realistic immediate path into:

Controls technician
Automation specialist
Junior automation engineer
Factory controls engineer

than directly into a senior machine-design position.

The first job does not need to be the final destination.

Step 2: Perform an Honest Skills Audit

Do not assume that years around automated machinery automatically equal controls-engineering competence.

Create four categories.

Skills you already have

These may include:

• Electrical troubleshooting
• Reading schematics
• Motor controls
• Sensors and actuators
• VFD diagnosis
• PLC monitoring
• Machine-process knowledge
• Safe isolation
• Breakdown communication

Skills you partly understand

Examples:

• Small ladder modifications
• HMI troubleshooting
• Industrial Ethernet
• Analog scaling
• PLC backups
• Remote I/O configuration

Skills you have only seen

Examples:

• Creating a PLC project from scratch
• Servo programming
• Safety PLC development
• SCADA
• OPC UA
• PID tuning
• Structured Text
• Electrical CAD

Skills you cannot yet demonstrate

These are the gaps that matter during interviews.

A useful assessment table might look like this:

Be honest. A clear weakness can be fixed.

A vague claim that you “know PLCs” cannot.

Step 3: Learn One PLC Platform Properly

Choose the platform used by your employer or commonly requested in your region.

In much of Europe, Siemens TIA Portal is a practical starting point. Other useful platforms include:

• Rockwell Studio 5000
• Beckhoff TwinCAT
• CODESYS
• Schneider EcoStruxure Control Expert or Machine Expert
• Mitsubishi GX Works
• Omron Sysmac Studio
• B&R Automation Studio

Do not spend six months learning how to create one motor rung in six packages.

Learn one platform deeply enough to perform the complete workflow.

Hardware configuration

You should be able to:

• Select the CPU
• Add local and remote I/O
• Configure addresses
• Set network parameters
• Add drives or communication devices
• Interpret module diagnostics
• Replace hardware correctly

Project structure

Understand:

• Main program
• Functions
• Function blocks
• Data blocks
• Tags
• User-defined data types
• Tasks or cyclic organisation blocks
• Retentive memory
• Libraries

Online work

Be able to:

• Establish communication
• Upload or back up a controller
• Compare online and offline projects
• Monitor logic
• Read diagnostics
• Identify forced values
• Make a controlled change
• Restore the previous version

Simulation

Use simulation to test:

• Normal cycles
• Failed feedback
• Stuck sensors
• Timeouts
• Communication loss
• Restart behaviour
• Manual and automatic modes

The objective is not merely to write code that compiles.

The objective is to predict how the controller behaves under normal and abnormal conditions.

Step 4: Stop Thinking Only Like a Troubleshooter

A technician often begins with a symptom and works backward.

That is exactly the correct approach during a breakdown.

An engineer must also begin with requirements and work forward.

Suppose you are designing control for a conveyor.

A troubleshooting mindset asks:

Why is the conveyor not starting?

An engineering mindset asks:

• Under which conditions may it start?
• What prevents it from starting?
• What feedback confirms it started?
• How long may feedback take?
• What happens if the downstream conveyor stops?
• What happens after an emergency stop?
• Can it restart automatically after power returns?
• How does the operator recover from a jam?
• Which conditions should appear on the HMI?
• What information should be stored in the alarm history?

That is the shift from finding faults to designing predictable behaviour.

Step 5: Learn Structured PLC Programming

Maintenance modifications often produce code like this:

Add one contact
Add one timer
Add one output

That can be acceptable for a small repair.

Controls engineering requires software that can be maintained and expanded.

Learn equipment modules

Create reusable logic for:

• Motors
• Valves
• Cylinders
• VFDs
• Analog instruments
• Conveyors
• Heaters
• Pumps

A motor module might include:

• Commands
• Permissives
• Interlocks
• Ready status
• Running feedback
• Fault feedback
• Start timeout
• Stop timeout
• Runtime accumulation
• Manual and automatic modes
• Status code
• Alarm outputs

Learn state machines

A machine sequence can be represented as defined states:

0  Idle
10 Check permissives
20 Load product
30 Clamp product
40 Run process
50 Release clamp
60 Unload
70 Cycle complete
900 Fault recovery

Each state should have:

• Entry conditions
• Output commands
• Completion conditions
• Timeout
• Fault response
• Recovery method

State machines make sequences easier to understand than hundreds of loosely connected latch bits.

Learn Structured Text

Ladder remains valuable for:

• Boolean interlocks
• Motor-control visibility
• Maintenance diagnostics
• Simple field logic

Structured Text is useful for:

• Calculations
• Arrays
• Loops
• Recipes
• Data manipulation
• Communication
• Complex state handling

A competent controls engineer should normally be comfortable with more than one IEC 61131-3 language.

Step 6: Build Better Alarms and Diagnostics

A maintenance technician knows exactly how frustrating bad alarms can be.

Use that knowledge.

A poor alarm says:

Sequence fault

A useful alarm says:

Transfer conveyor failed to start:
running feedback was not detected within 3 seconds.

An even better diagnostic screen shows:

Start command:        ON
Safety ready:         ON
Drive ready:          ON
Contactor output:     ON
Running feedback:     OFF
Start timer:          3.4 s

Good diagnostics reduce downtime and prevent future technicians from digging through the PLC program unnecessarily.

Alarm-design principles

Each alarm should explain:

• What failed
• Where it failed
• Why the controller believes it failed
• Whether the machine stopped
• What the operator may do
• Whether maintenance is required

Avoid generating hundreds of alarms for the same original event.

A failed safety circuit should not produce 40 unrelated “motor unavailable” alarms unless those secondary messages add useful information.

Step 7: Learn HMI Development

A controls engineer must understand how operators interact with the control system.

Build screens for:

• Machine overview
• Manual operation
• Sequence status
• Active alarms
• Alarm history
• Setpoints
• Maintenance
• I/O diagnostics
• Drive diagnostics
• Recipe management

Manual controls need interlocks

A manual button should not bypass every machine condition simply because it is labelled “Manual.”

Decide:

• Which conditions remain active
• Whether the action is momentary or maintained
• Whether movement requires hold-to-run control
• How the operator knows the device moved
• Whether a safety function is involved
• How conflicting commands are prevented

Show causes, not just states

Instead of:

Machine not ready

show:

Machine not ready:

• Guard circuit not reset
• Main air pressure low
• Axis 2 not homed
• Discharge conveyor unavailable

You already know which information maintenance needs.

Now build it into the machine.

Step 8: Become Comfortable With Drives and Motion

Most controls roles involve more than PLC digital I/O.

VFD integration

Learn how to exchange:

PLC to VFD:
• Enable
• Run
• Direction
• Speed reference
• Fault reset

VFD to PLC:
• Ready
• Running
• At speed
• Warning
• Faulted
• Actual speed
• Current
• Fault code

Understand:

• Hardwired control
• Fieldbus control
• Local and remote modes
• Motor nameplate data
• Acceleration and deceleration
• Communication-loss behaviour
• Safe Torque Off boundaries

Servo fundamentals

For machine automation, learn:

• Axis enable
• Homing
• Absolute and relative positioning
• Velocity
• Acceleration and jerk
• Position feedback
• Following error
• Mechanical limits
• Motion faults

You do not need advanced coordinated motion for your first controls role.

You should understand how motion commands differ from ordinary motor start-stop control.

Step 9: Learn Industrial Networking

Many modern “PLC faults” are actually network problems.

Learn:

• IP addresses
• Subnet masks
• Gateways
• Device names
• MAC addresses
• Managed and unmanaged switches
• Topology
• TCP and UDP
• Network diagnostics
• Duplicate addressing

Then study the protocols used around you:

• PROFINET
• EtherNet/IP
• EtherCAT
• Modbus TCP
• Modbus RTU
• PROFIBUS
• OPC UA

You should be able to diagnose:

PLC can reach the device,
but cyclic I/O communication is not established.

That requires more than confirming that ping works.

Do not ignore cybersecurity

Controls engineers increasingly work with:

• Remote-access systems
• Firewalls
• Managed switches
• User accounts
• Backup servers
• SCADA networks
• Industrial data connections

At minimum, understand:

• Network segmentation
• Approved remote access
• Least-privilege accounts
• Backup and restoration
• Disabling unused services
• Why PLCs should not be exposed directly to the internet

Step 10: Add Electrical-Design Skills

Maintenance technicians are usually strong at reading existing drawings.

Controls engineers may need to create or review them.

Learn how to produce:

• I/O lists
• Power-distribution concepts
• Control schematics
• Terminal plans
• Network drawings
• Panel layouts
• Cable schedules
• Device lists
• Bills of materials

Learn hardware selection

You should understand how to select:

• PLC CPU
• I/O modules
• Power supply
• Network switch
• Relays and contactors
• Circuit protection
• VFDs
• Sensors
• Operator panels
• Enclosures
• Safety components

Selection is not simply choosing the cheapest catalog number.

Consider:

• Voltage
• Current
• Short-circuit rating
• Environment
• Temperature
• IP rating
• Communication
• Expansion
• Availability
• Maintenance standardisation
• Required diagnostics

Your maintenance experience gives you useful insight into whether a component will be practical to replace and troubleshoot.

Step 11: Understand Functional-Safety Boundaries

A standard PLC condition that stops a motor is not automatically a safety function.

Controls engineers may need to work around:

• Emergency stops
• Guard switches
• Light curtains
• Safety relays
• Safety PLCs
• Safe Torque Off
• Safe motion
• Restart interlocks

You should understand:

• Risk assessment
• Safety functions
• Performance Level and SIL concepts
• Categories and architecture
• Diagnostic coverage
• Reset and restart behaviour
• Verification and validation

Do not make safety modifications simply because you can open the safety program.

Safety work requires defined competence, proper review and documented validation.

Step 12: Learn Engineering Documentation

Maintenance work often rewards speed:

Machine stopped
→ Find fault
→ Repair
→ Restart production

Engineering work requires evidence that the system was designed and changed properly.

Useful documents include:

• Functional description
• Sequence of operation
• I/O list
• Alarm list
• Network architecture
• Hardware configuration
• Software structure
• Test procedure
• Change record
• Commissioning report
• Backup register

Write before programming

For a small machine section, define:

Purpose
Inputs
Outputs
Operating modes
Permissives
Interlocks
Normal sequence
Timeouts
Fault response
Reset behaviour
Power-recovery behaviour

Writing this first reveals missing decisions before they become missing logic.

Step 13: Adopt Version Control and Change Management

A controls project should not be stored as:

Line1_Final
Line1_Final2
Line1_Final2_NEW
Line1_Final2_NEW_WORKING

At minimum, use:

• Clear machine identification
• Date or release number
• Change description
• Author
• Previous working version
• Online/offline comparison
• Controlled backup location

Where practical, use Git or the vendor’s version-management tools for text-based source, exports and supporting documentation.

Before changing production code

1. Confirm the correct controller.
2. Upload or back up the running project.
3. Compare it with the available offline file.
4. Define the requested change.
5. Assess affected equipment.
6. Check safety implications.
7. Prepare a test procedure.
8. Prepare a rollback plan.

After the change

1. Test normal operation.
2. Test relevant failure conditions.
3. Remove forces and temporary logic.
4. Save the final project.
5. Update documentation.
6. Record the change.
7. Retain the previous working version.

This discipline is one of the clearest differences between casual PLC modification and engineering ownership.

Step 14: Build Complete Projects

A portfolio should demonstrate more than isolated ladder networks.

Project 1: Conveyor module

Include:

• VFD control
• Product sensors
• Downstream permissive
• Jam detection
• Manual jog
• Automatic operation
• Alarm handling
• Communication-loss behaviour
• HMI diagnostics

Project 2: Two-pump system

Include:

• Duty and standby selection
• Automatic alternation
• Failed-pump takeover
• Analog pressure input
• Runtime balancing
• Maintenance isolation
• Alarm history

Project 3: Tank process

Include:

• Analog level
• Fill and drain valves
• Pump control
• High-high protection
• Sensor-disagreement alarm
• Manual and automatic modes
• PID control where appropriate

Project 4: Multi-step machine

Include:

• State machine
• Cylinders
• Clamps
• Sensors
• Timeouts
• Failed-step recovery
• Power-interruption behaviour
• Detailed diagnostics

For every project, create:

• Functional description
• I/O list
• Program structure
• HMI
• Alarm list
• Test checklist
• Short demonstration video

Do not use confidential employer programs or drawings.

Build simplified original systems.

Step 15: Get Ownership of a Small Real Project

This is the most important step.

Watching engineers modify programs does not prove you can deliver a project.

Start with something limited and measurable.

Suitable first projects include:

• Adding a missing diagnostic alarm
• Replacing an obsolete VFD
• Converting hardwired speed control to fieldbus
• Adding one sensor and interlock
• Logging machine downtime
• Modifying a small sequence
• Replacing a small PLC
• Automating a manual pump system
• Creating a maintenance HMI screen
• Adding runtime and maintenance counters

Use a controlled project process

Document:

1. Original problem
2. Current behaviour
3. Proposed change
4. Hardware affected
5. Software affected
6. Risks
7. Test method
8. Rollback method
9. Final result

A successful small project gives you real evidence for your CV and interviews.

Step 16: Use Your Current Employer as the Bridge

Your easiest route may be inside the factory where you already work.

You know:

• The machines
• The people
• The production process
• The recurring faults
• The existing automation platforms

Ask for responsibility that reduces work for the current controls team.

Useful tasks to volunteer for

• PLC and HMI backups
• Drive-parameter backups
• I/O documentation
• Network-device inventories
• Obsolescence lists
• Alarm improvements
• Small approved program changes
• I/O commissioning
• Program comparison
• Contractor support
• Factory acceptance testing

Do not begin by asking for permission to rewrite the main production line.

Build trust through controlled useful work.

A practical progression is:

Identify PLC condition
→ Back up project
→ Make one reviewed change
→ Add one equipment module
→ Own one machine section
→ Lead one small upgrade

Step 17: Consider a Bridge Job

Your current employer may never formally move you out of maintenance.

You may be too useful during breakdowns.

Bridge-role titles include:

• Controls technician
• Automation technician
• PLC technician
• Junior automation engineer
• Junior controls engineer
• Commissioning technician
• Field-service engineer
• Electrical automation specialist
• SCADA technician
• Mechatronics engineer

These roles can move you closer to daily programming and project work without expecting you to arrive as a complete senior engineer.

Current occupational classifications show that controls-engineering work overlaps with mechatronics, electrical and industrial engineering rather than fitting one universal job title. Search by responsibilities and skills, not only by the words “controls engineer.”

Step 18: Rewrite Your CV as an Engineer-in-Transition

Do not hide your maintenance background.

Translate it into relevant controls evidence.

Weak description

Repaired production equipment and responded to breakdowns.

Stronger description

Diagnosed automated production faults involving PLC I/O, industrial networks, VFDs, motor-control circuits, safety systems and field instrumentation.

Weak description

Worked with Siemens PLCs.

Stronger description

Used TIA Portal to monitor sequence logic, identify missing permissives, compare controller projects, back up PLC software and support controlled program modifications.

Weak description

Replaced drives.

Stronger description

Commissioned replacement VFDs by restoring motor data, digital I/O, speed references, communication parameters and fault-handling behaviour.

Show engineering progression

Include:

• Projects delivered
• Controls platforms
• HMI systems
• Drive brands
• Industrial protocols
• Electrical-design tools
• Commissioning experience
• Program backups and version management
• Documented improvements
• Measurable downtime reduction

Do not exaggerate.

A credible transition story is stronger than claiming to be an expert in every platform.

Do You Need a Degree?

Not always.

Practical employers may promote an experienced maintenance or controls technician when that person can demonstrate engineering-level work.

However, a degree can make it easier to access:

• Graduate engineering positions
• Large multinational employers
• Advanced design roles
• Management progression
• International positions
• Specialist work involving deeper theory

BLS treats a bachelor’s degree as the typical entry-level education for electrical and industrial engineers, although controls roles do not map perfectly to one occupational category. Electrical-engineering employment is projected to grow 7% from 2024 to 2034, while industrial engineering is projected to grow 11%, with automation expertise identified as one contributor to demand.

In Europe, skills-based recruitment is receiving increased attention, but formal qualifications still matter for many employers and for regulated responsibilities. Recent EURES guidance highlights a greater emphasis on demonstrated abilities, while European labour-market information continues to report shortages in engineering and technical occupations.

A practical hybrid route can work well:

Maintenance experience
+
Controls projects
+
Part-time electrical, automation or mechatronics degree

Do not wait for a degree before learning PLC programming.

Do not assume experience makes formal education worthless.

Certifications That Can Help

Certificates are useful when they support real competence.

Potential options include:

• Siemens SITRAIN
• Rockwell Automation training
• Beckhoff training
• CODESYS training
• Schneider Electric University or vendor courses
• TÜV functional-safety training
• Industrial networking courses
• Electrical CAD training
• Cybersecurity fundamentals

A certificate can help establish that you studied a topic.

It does not replace a project where you actually used it.

Prioritise:

Real responsibility
→ Demonstrable project
→ Relevant training
→ Certificate

not:

Twenty certificates
→ No completed control system

A Realistic 12-Month Transition Plan

This assumes you already have industrial maintenance experience and can study approximately five to ten hours per week.

Months 1–2: Assess and strengthen fundamentals

Learn or review:

• PLC scan cycle
• Data types
• Ladder logic
• Structured Text
• Timers and counters
• Functions and function blocks
• Safe online work

Complete:

• Skill audit
• Platform selection
• Simple motor-control project
• Current PLC and HMI backups at work where authorised

Months 3–4: Program architecture

Learn:

• Equipment modules
• User-defined data types
• State machines
• Manual and automatic modes
• Interlocks and permissives
• Alarm structure

Build:

• Reusable motor block
• Conveyor module
• Two-pump application

Months 5–6: HMI and diagnostics

Learn:

• Screen navigation
• Faceplates
• Alarm history
• Missing-permissive displays
• Manual controls
• Setpoint validation

Build a complete HMI for one portfolio project.

Months 7–8: Drives and networks

Learn:

• VFD fieldbus integration
• PROFINET or EtherNet/IP
• Remote I/O
• Managed-switch basics
• Communication-loss handling
• Device diagnostics

Build a simulated PLC, HMI and VFD system.

Months 9–10: Electrical design and safety

Learn:

• I/O lists
• Hardware selection
• Control schematics
• Bills of materials
• PE and shielding
• Safety-relay and safety-PLC principles
• Verification boundaries

Design a small control panel for one portfolio project.

Months 11–12: Real project and applications

Complete:

• One small workplace controls improvement
• Three polished portfolio projects
• Updated controls-focused CV
• Interview preparation
• Applications for bridge roles

After 12 months, you may be ready for junior controls, automation or commissioning work.

You will still require supervision on unfamiliar or safety-critical projects.

That is normal.

Common Mistakes During the Transition

Staying only in troubleshooting mode

Finding a fault is not the same as designing a system.

Practise creating applications from requirements.

Making random program additions

A working rung is not automatically good architecture.

Understand how the change fits the complete project.

Ignoring documentation

An engineer must leave behind more than functioning code.

Learning only Ladder

Ladder is valuable, but data handling and modern project structure often require Structured Text and function blocks.

Avoiding electrical design

Controls engineering still involves real power supplies, protection, I/O and field devices.

Ignoring safety because another department handles it

Even when a specialist validates safety, you must understand where standard control ends and safety-related control begins.

Waiting for your employer to create the perfect opportunity

Sometimes you must build the portfolio, request responsibility or change companies.

Remaining the permanent emergency fixer

Breakdown competence is valuable.

It can also keep you trapped in a reactive role if every project task is postponed because production needs you.

Applying only to senior engineer vacancies

Use bridge roles to acquire formal project ownership.

Pretending to know more than you do

Controls interviews often become technically detailed.

Be clear about what you have diagnosed, what you have programmed and what you have only observed.

How to Know You Are Ready to Apply

You do not need to know every PLC instruction.

You should be able to demonstrate that you can:

[ ] Read and trace industrial electrical schematics
[ ] Configure a small PLC system
[ ] Build reusable equipment logic
[ ] Write a machine sequence
[ ] Use Ladder and basic Structured Text
[ ] Create useful HMI diagnostics
[ ] Configure a VFD
[ ] Diagnose basic industrial-network problems
[ ] Upload, compare and back up projects safely
[ ] Explain manual and automatic modes
[ ] Design timeouts and fault recovery
[ ] Produce an I/O list
[ ] Document a software change
[ ] Test normal and abnormal behaviour
[ ] Recognise safety-related boundaries
[ ] Show at least two or three complete projects

You are not expected to arrive as a senior engineer.

You are expected to show that your maintenance experience can be converted into structured engineering work.

Why This Transition Is Still Worth Making

Controls and automation work continues to sit across electrical engineering, industrial engineering and mechatronics. Current U.S. projections show above-average growth for electrical and industrial engineers, while European labour-market sources continue to identify shortages across engineering and technical occupations. Lithuania’s regional EURES information, for example, reports shortages involving electrical engineering technicians and process-control technicians in parts of the country.

That does not mean the move is automatic.

Companies need people who can combine:

Machine experience
+
Electrical troubleshooting
+
PLC programming
+
Industrial networking
+
Documentation
+
Engineering judgement

Maintenance technicians are already strong in the first two areas.

The transition is about deliberately building the rest.

Final Verdict

A maintenance technician can become an excellent controls engineer.

You already know how machines fail, how production pressure changes decisions and how a small electrical defect can create a very convincing software symptom.

Your roadmap is:

Maintenance troubleshooting
→ Safe PLC access
→ Structured programming
→ HMI, drives and networks
→ Electrical design
→ Documentation and testing
→ Small project ownership
→ Bridge controls role
→ Independent engineering responsibility

Do not try to erase your maintenance background from your CV.

Turn it into your advantage.

A controls engineer who has never maintained machinery may design a system that works beautifully during a demonstration and becomes painful after the first sensor failure.

A former maintenance technician knows that the machine must also be diagnosable at 2 a.m., with production waiting and the original programmer nowhere nearby.

That perspective is not something you need to overcome.

It is one of the strongest reasons to make the jump.