Top 10 PLC Programming Skills Employers Want in 2026

The demand for skilled PLC programmers in the United Kingdom has never been higher. As manufacturing embraces Industry 4.0 and smart factory initiatives, employers are raising the bar on the technical competencies they expect. Whether you are a seasoned controls engineer or a graduate exploring your first automation role, understanding which PLC programming skills are most sought after will give you a decisive advantage in the 2026 job market.

1. Siemens TIA Portal (S7-1200 / S7-1500)

Siemens remains the dominant platform across UK manufacturing, pharmaceuticals, and water treatment. Proficiency in TIA Portal — including hardware configuration, HMI development, and online diagnostics — is consistently the most requested skill in PLC job adverts. Employers expect familiarity with both S7-1200 and S7-1500 series processors.

2. Allen-Bradley / Rockwell Studio 5000

Rockwell Automation holds a strong position in automotive, FMCG, and food and beverage sectors. Experience with ControlLogix and CompactLogix processors, combined with Studio 5000 Logix Designer, is essential for engineers targeting these industries.

3. Structured Text (IEC 61131-3)

The industry is moving beyond ladder logic. Structured text is increasingly preferred for complex algorithms, data handling, and integration with higher-level systems. Engineers who can write clean, maintainable structured text code command a premium in the market.

4. Safety PLC Programming (SIL-Rated Systems)

Functional safety is non-negotiable in sectors such as oil and gas, chemicals, and pharmaceuticals. Skills in safety PLC programming — including TIA Portal Safety, GuardLogix, and compliance with IEC 61508/62061 — are in high demand and attract salary premiums of 10-15%.

5. Schneider Electric EcoStruxure / Unity Pro

Schneider platforms are prevalent in building management, water utilities, and energy. Engineers with EcoStruxure Machine Expert or Unity Pro experience fill a niche that many recruiters struggle to resource.

6. SCADA Integration & Communication Protocols

Modern PLC programmers must understand how their code fits into the wider system architecture. Knowledge of OPC UA, Modbus TCP/IP, PROFINET, and EtherNet/IP is expected alongside core PLC programming ability.

7. Beckhoff TwinCAT 3

Beckhoff's PC-based automation platform is gaining ground in high-speed motion control and packaging. TwinCAT 3 experience, particularly in structured text and C++ integration, positions engineers for premium contract and permanent roles.

8. Version Control & Documentation Standards

Professional software development practices are entering the automation world. Employers increasingly value engineers who use version control, follow naming conventions, and produce clear documentation in line with ISA-88 or PackML standards.

9. HMI / Visualisation Development

The ability to design intuitive operator interfaces is a core requirement. Whether it is WinCC, FactoryTalk View, or Ignition, employers want PLC programmers who can develop screens that genuinely improve plant operability.

10. Commissioning & Troubleshooting

Technical ability alone is not enough. Employers prize engineers who can commission systems on site, diagnose faults under pressure, and communicate effectively with operations and maintenance teams. This combination of software skill and practical field experience is what truly sets top candidates apart.

Where the Market Is Heading

The UK PLC job market is evolving rapidly. Salaries for experienced PLC programmers now range from £42,000 to £65,000 for permanent roles, with contract day rates reaching £350-£500 depending on platform specialism and security clearance. Engineers who combine traditional PLC skills with knowledge of IIoT, cloud connectivity, and data analytics will be best positioned for career growth.

At OSCABE, we specialise in placing PLC programmers and automation engineers across all major platforms. Our Chartered Engineer-led screening ensures that candidates are technically verified before they reach your desk.