This job posting is for a Systems Improvement Engineer position in rail rolling stock based in the UK. The role requires experience investigating technical issues involving mechanical, electrical, electronic, and software systems on locomotives, trains, and diesel multiple units. Key responsibilities include recommending and implementing corrective actions, carrying out root cause analyses, and assisting with equipment testing and repair. Candidates should have a technical qualification along with extensive practical experience in mechanical, electrical, and electronic aspects of diesel multiple units. The salary is £36,000 per year plus benefits.