Automation Engineer Career Guide 2026: Roles, Skills and a Free Learning Route

An automation engineer designs, programs, commissions and maintains the systems that run machines and plants: PLCs, HMIs, SCADA, drives, robots and industrial networks. The route in is the same almost everywhere. Learn electrical basics and one PLC properly, add HMI and networks, pick a specialism, and prove it with projects. The learning part can be done free on edwartens.com.

In this lesson by Instrumentation Tools, industrial automation is introduced for complete beginners. It is part of the free Siemens TIA Portal in Three Hours course. Watch it if the field is new to you, then use the rest of this guide to choose a role and a route.

Automation is several jobs, not one

"Automation engineer" covers work that feels very different day to day. Knowing which one you want makes your learning shorter.

• Maintenance and controls technicians keep a running plant running. They go online to a PLC to find why a conveyor stopped, change a drive, replace a sensor. Fault-finding under pressure is the core skill. Demand is rising: Deloitte and The Manufacturing Institute project 2.3 million US technician openings by 2030.
• Commissioning engineers bring new systems to life on site: point-to-point I/O checks, loop tests, first start-up, handover. It usually means travel; see how to become a commissioning engineer.
• Controls or PLC engineers write and test the programs, often at a machine builder or system integrator, and then commission them.
• SCADA and MES engineers build the supervisory layer: screens, alarms, historians, reports and links to business systems.
• Process control and DCS engineers work in continuous and batch plants on loops, sequences and alarm management.
• Robotics engineers program and integrate robot cells, including their safety systems.

Many careers move between these. A common path starts in maintenance or commissioning, where you learn how plants fail, and moves into design.

Core skills

These appear in almost every automation job description, in some form:

1. Electrical fundamentals. Reading schematics, motor control with contactors and overloads, 24 V DC control circuits, safe isolation.
2. PLC programming. Ladder logic first, then structured text and function blocks, all defined in IEC 61131-3. Timers, counters, analog scaling, program structure.
3. HMI design. Screens an operator can use at a glance, alarms that mean something, and navigation that does not hide the important things.
4. Industrial networks. PROFINET or EtherNet/IP, Modbus, OPC UA, IP addressing and subnets.
5. Drives. Wiring and parameterising a VFD, and controlling it from a PLC.
6. Documentation. I/O lists, functional descriptions, test records. Much of the job is written.

Skills that set you apart

• Instrumentation and PID, for any process plant.
• Machine safety, including safety PLCs and the thinking behind them. For process plants, SIS and SIL to IEC 61511.
• SCADA and data: historians, SQL, and IIoT tools that move data without loading the controllers.
• OT cybersecurity to ISA/IEC 62443, increasingly written into specifications.
• Python for data work and test tools.
• A second PLC brand, to show you can transfer the ideas.

How to prove skills without experience

Employers want evidence. Two or three projects, each written up on one or two pages, do more than a list of courses:

• A machine sequence in a PLC simulator: a filling station, a traffic junction or a pick-and-place, with an HMI, alarms and a written functional description.
• A virtual commissioning project where the PLC drives a simulated machine.
• A small network project: two PLCs exchanging data, or a Modbus device read into an HMI.
• A test record showing how you checked the program, including what went wrong and how you fixed it.

Explain your choices in the write-up. An interviewer will ask why you used a latch there, what happens on power loss, how the operator resets a fault. The PLC certificates post covers what employers actually check, and the PLC interview questions post helps you prepare for the conversation. Before you apply, read our guide to an ATS-friendly automation engineer CV.

Later in a career, professional credentials such as ISA's Certified Automation Professional (CAP) and Certified Control Systems Technician (CCST) are one way to show experience; both have education and work-experience requirements and an exam, so they come after the first job rather than before it.

A free route

1. [Industrial Motor Control](/free/industrial-motor-control): contactors, starters and the circuits a PLC replaces.
2. [Siemens TIA Portal](/free/siemens-tia-portal) for absolute beginners, in the free trial with PLCSIM. Rockwell learners can start with Allen-Bradley Studio 5000 instead. The free PLC training hub lists every PLC course.
3. [HMI Design and Programming](/free/hmi-design-siemens-wincc-factorytalk-view) on the same project.
4. [Industrial Communication](/free/industrial-communication) once you can program one PLC.
5. One specialism: free SCADA courses, drives and motion, robotics or DCS.

How long that takes depends on your evenings; How Long Does It Take to Learn PLC Programming? gives a week-by-week plan, and A Free Industrial Automation Course With Certificate: A 12-Week Curriculum sets out a full programme. The PLC foundations path groups the first four courses.

What free online learning does not replace

A simulator teaches the logic. It does not teach you to wire a panel safely, to find an intermittent fault on a 20-year-old machine, or to work under a site's permit-to-work system. Plan to get hands-on time: an apprenticeship, a junior maintenance role, a workshop, or classroom training with hardware. Treat online study as the part you can do tonight, and hands-on work as the part you arrange next.

Habits that matter as much as skills

Technical skill gets you the interview. Habits keep you trusted on site:

• Back up before you change anything. Upload the program from the controller, save it with a date, then make your change.
• Never force I/O or bypass an interlock on running plant without the permission and the procedure the site requires. A forced bit can defeat a protection without anyone noticing.
• Keep versions. Name files properly, comment changes in the code, and record what you changed and why.
• Talk to operators. They know how the machine really behaves, and they will use the screen you design every shift.
• Write it down. A clear functional description and a test record save days at handover and months when someone else maintains your work.
• Know the safety basics of your region: isolation, lock-out, permits and the machine safety standards your sector follows.

None of these appear in a simulator. Interviewers for commissioning and maintenance roles often ask about them directly, so have an example ready for each.

Planning your automation engineer career: where to aim

Read twenty real job adverts in the city or country you want to work in. Note which PLC brands, SCADA packages and industries appear most. Learn those first. That single exercise saves more time than any course list, including this one. PLC and automation jobs by country shows how to search internationally, from the US and Germany to the Gulf and Australia, and the manufacturing skills gap in 2026 sets out which skills employers report as short. For pay, PLC programmer salaries by country gives sourced ranges for eight countries. Current openings are on the jobs page.

Start the free courses

Create a free account and start with Siemens TIA Portal or Industrial Motor Control. Each course ends with one 15-question final assessment, a 60% pass mark and three attempts, then a 24-hour wait and a fresh paper.

Learning is free in full. The optional EDWartens Certificate of Completion is a small one-off fee, US$8.99 for a beginner course. Anyone can check it at edwartens.com/verification. It is not a Siemens, Rockwell or other vendor certification, and it is not a university or accredited qualification.

Take the free course

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