DV CLEARED - Senior Software Engineer

About this role: We are supporting an AWE Burghfield project and are seeking a DV Cleared Senior Software Engineer to take full responsibility for software delivery on a high-security, site-based controls and automation project. This is a senior-level role requiring strong Siemens PLC and HMI experience, leadership capability, and proven delivery within regulated defence or nuclear environments. The successful candidate will play a key role in software design, on-site testing and commissioning, client liaison, and the mentoring of junior engineers, ensuring projects are delivered safely, on time, and to the highest quality standards. Job Responsibilities: * Act as the site-based Senior Software Engineer, responsible for all software activities on assigned AWE Burghfield projects * Configure, develop and support Siemens PLC and HMI systems * Configure and support Siemens SCALANCE and Siemens network switching equipment * Produce and execute on-site software test documentation, including FAT and SAT * Carry out on-site testing and commissioning of PLC-based control systems * Lead software specification, design and implementation activities * Liaise directly with the client to ensure successful software delivery and stakeholder satisfaction * Lead, mentor and develop other software engineers on site * Oversee software resources, workload planning and technical delivery across the project * Ensure delivery of contracts on time, within budget and to agreed scope * Ensure all work complies with internal QESH and Integrated Management Systems, as well as regulatory and legal requirements * Drive continuous improvement, innovation and best practice in software engineering processes * Demonstrate strong commitment to Quality, Health, Safety and Environmental standards at all times Experience Required: * MOD DV Security Clearance (essential) * Degree-qualified in a relevant engineering discipline * Minimum 4+ years of Siemens software engineering experience, including leadership within project environments * Strong hands-on experience with: * Siemens PLC programming * Siemens HMIs * On-site commissioning and installation * Proven experience within nuclear, defence or highly regulated environments * Strong understanding of systems integration and industrial cyber security * Experience delivering projects in line with budget, programme and quality requirements