After a PLC course, the realistic first roles in the UK are junior or trainee controls engineer, service or commissioning technician, maintenance technician, and SCADA or HMI support. On 21 October 2026 Reed showed 133 results for "trainee PLC", with example salaries from about £26,000 to £50,000. A course gives you the vocabulary and a first project; the next three months of practice, applications and networking decide how quickly you land a role. No course, ours included, guarantees a job.
What jobs can you get after a PLC course?
Most people land in one of five entry paths. Which one fits depends on your background and tolerance for travel, shift work and site conditions.
| Role | What you do | Who it suits | Example from Reed (21 Oct 2026) |
|---|---|---|---|
| Trainee or junior controls / PLC engineer | Modify programs, test, assist on projects | Graduates, career changers with a portfolio | Junior Controls / PLC Engineer, £30,000 to £40,000 |
| Service or field engineer | Travel to sites, diagnose and repair machines, update programs | People who like variety and travel | Trainee Service Engineers, £26,000 to £30,000 |
| Commissioning technician | Install and test control systems on site | Electricians, panel builders | No separate Reed example shown; commissioning is a core duty in the Skills England standard |
| Maintenance / controls technician | Keep a factory running; fault find on shift | Existing maintenance staff | No separate Reed example shown; servicing and maintenance are core duties in the Skills England standard |
| SCADA / HMI support | Supervisory screens, alarms, data | Detail-oriented, screen-based work | SCADA cited in 632 permanent jobs (ITJobsWatch) |
Reed's examples show the range for juniors in automation: a Graduate or Junior Engineer (training into automation and PLCs) at £27,000 to £30,000 and a Junior Automation Engineer (PLC, Siemens TIA Portal) at £40,000 to £50,000. Read trainee PLC jobs in the UK: what employers want for the skills those adverts list.
What does each of those roles involve day to day?
The day-to-day work differs more than the titles suggest.
- Commissioning: you take a built panel and machine and make it work. Factory acceptance tests, checking I/O point by point, tuning, and fixing what the drawings got wrong. Skills England's technician standard lists setting up, commissioning and testing hardware and software among its core duties.
- Service and maintenance: you work under time pressure to find faults. Reading drawings, using the PLC's online diagnostics and a multimeter, and knowing when to escalate. The standard lists fault escalation support to first-line personnel as a duty.
- Controls engineering: you work in the code, specifications and design, with site visits for testing. Prospects describes C&I engineers as designing, installing, managing and maintaining control equipment, and writing software and test procedures.
- SCADA and HMI support: you build and maintain operator screens, alarms and trends and help plant staff. ITJobsWatch counted 632 permanent jobs citing SCADA in the six months to 21 October 2026, up from 242 a year earlier, with a median advertised salary of £55,000, although this is an IT-focused index with small samples.
What do you see on a real site?
A real site is messier than a course project: documentation is out of date, inputs are wired to the wrong terminals, and production wants it running now.
Commons describes this photo as a SCADA system for campus chiller controls. The screens are the visible layer, but the first thing you will usually do on a job is read the drawings, trace a signal and test it. If you have practised only in simulation, deliberately seek out the less glamorous skills: reading electrical schematics, wiring a panel, and diagnosing a dead input.
RealPars' explainer on factory acceptance testing is a good primer on what commissioning-type roles do first: powering up a control panel and checking its devices before it ships. It is educational content from a PLC training company, so treat it as a general introduction rather than UK-specific practice.
What should you do in the first 90 days after the course?
Spend your first 90 days turning the course into evidence an employer can see. This plan assumes you can give it 8 to 10 hours a week alongside other commitments.
- Days 1 to 14: rebuild everything unaided. Close your notes and recreate each course exercise from scratch. Whatever you cannot do from memory, repeat.
- Days 15 to 30: build two portfolio projects. For instance a conveyor sorter and a tank-level controller with an alarm. Use the free PLC simulator and process control simulator, and document with screenshots and a one-page description.
- Days 31 to 45: tighten your CV. Lead with projects, tools (TIA Portal V17, PLCSIM, Factory I/O) and anything electrical or site-based you have done. Our first PLC job guide shows how.
- Days 46 to 75: apply and learn in parallel. Apply to 5 to 10 roles a week, including service, maintenance and junior controls roles, not only roles titled "PLC engineer". Practise with a list of common PLC interview questions.
- Days 76 to 90: add one adjacent skill. Pick SCADA, motor control and drives, instrumentation or fault finding, and show it in a third project.
How do you keep building skills after the course?
The best career insurance is breadth around the PLC. Employers rarely need just a programmer; they need someone who can read a drawing, test a sensor and talk to operators. Good next steps include:
- SCADA and HMI: the SCADA tutorial for beginners and the free WinCC SCADA course.
- Instrumentation and PID: the free industrial instrumentation and PID control courses.
- Troubleshooting: PLC electrical troubleshooting and maintenance and our fault diagnosis guide.
- Machine safety: the free machine safety (ISO 13849 / SISTEMA) course is a differentiator many juniors lack.
- A second platform: Allen-Bradley is the common alternative; see our Siemens vs Allen-Bradley comparison and the free Studio 5000 course.
This 7-minute RealPars video summarises basic PLC components and troubleshooting steps, a good companion for maintenance and service roles. Pair it with practice on a simulator.
What if your first job isn't called PLC engineer?
Take the role that gives you the most exposure to real control systems, even if the title is different. Reed's trainee page on 21 October 2026 included "Trainee Service Engineers" at £26,000 to £30,000 alongside controls roles, and many service and maintenance jobs involve PLC fault finding as part of the day.
If you land a maintenance or service job, you can still build PLC credibility by:
- asking whether you can shadow the controls engineer on fault calls
- offering to organise and document program backups (always take a backup before going online with a live PLC)
- noting every fault you diagnose, with cause and fix, as portfolio material
- learning the plant's PLC model well before moving to a second platform
Expect shifts, on-call rota or travel in some of these roles; ask about them at interview.
What mistakes should you avoid after a course?
Most people lose momentum in the same few ways.
- Waiting for the perfect job. A service, maintenance or junior role often opens controls doors faster than waiting for a role titled PLC engineer.
- A CV with no evidence. Listing "PLC programming" without a project gives an employer nothing to check.
- Skipping safety. Site inductions, isolation and permit systems matter. A candidate who talks sensibly about safe working stands out.
- Stopping practice. Skills fade quickly without use. Schedule a weekly session even after the course ends.
Is demand strong enough to be worth the effort?
Demand signals are positive but should be read cautiously. The IET's 2025 Skills Survey, run with YouGov among 1,316 managers at engineering and technology employers, found 76% say they struggle to find certain skills when recruiting, and 30% say they lack automation skills. ITJobsWatch shows 144 permanent PLC Engineer ads in the six months to 21 October 2026, against 79 a year earlier and 27 two years earlier, with a £60,000 median advertised salary. That is an IT-focused index with small samples, and junior roles are competitive, so a good portfolio and flexibility on location still matter. For a broader look see the UK PLC and automation job market.
How EDWartens can help
The Professional Module is five live online days in Siemens TIA Portal (certificate states V17), covering PLC hardware concepts, ladder logic, HMI and WinCC SCADA, followed by 68 self-paced Basic Engineering modules. Career support includes a one-to-one resume session, seven role-specific CV templates, interview preparation and a job board in the student portal. There is no job guarantee, and the CPD certificate is not a regulated qualification. See the Professional Module, placements information and sign up.
