Senior Human Factors Engineer

About the role

AECOM is seeking a Senior Human Factors Engineer to join its growing global Rail Systems and SESA team, based in Madrid. The role plays a strategic part in delivering complex, global, safety-critical transportation programmes, combining knowledge of rail standards, systems integration expertise and a commitment to user-centred design, safety assurance and regulatory compliance. You will work with clients, multi-disciplinary engineering teams and safety specialists, and provide leadership in technical delivery while mentoring junior staff.

Key responsibilities

• Lead the planning, execution and integration of Human Factors activities across the full system lifecycle, from concept through to operation and maintenance
• Establish HF design philosophies and strategies aligned with project and regulatory requirements
• Act as technical lead on key rail and infrastructure projects, ensuring alignment with standards such as EN 50126, ISO 9241, RIS-7100 and RSSB guidance
• Produce Human Factors Integration Plans, Issue Logs and Assessment Reports, and carry out assessments such as Hierarchal Task Analysis
• Run design reviews, mock-ups, simulators and user feedback studies, and lead certification planning and compliance strategies
• Contribute to RAMS assurance, turn requirements into verifiable HF design and usability criteria, and review task analyses, HMI assessments, usability testing and error management strategies
• Develop and approve certification documentation, oversee HF test campaigns and interface with certification bodies and regulators
• Contribute to project proposals, scoping and estimation, review and sign off deliverables, and mentor junior engineers
• Represent AECOM in client meetings, industry working groups and technical committees, and help improve HF methodologies and tools

Required profile

• MSc in Human Factors, Ergonomics or a closely related discipline
• At least 10 years' professional experience in Human Factors, including at least 5 years in rail or other regulated, safety-critical environments
• Significant experience applying Human Factors principles to UK and international rail programmes
• Strong written and verbal communication skills, able to present to clients and influence outcomes across disciplines
• Proficiency in English

Required skills

• Knowledge of rail standards such as EN 50126, RIS-7100 and RSSB guidance
• Proficiency in Microsoft Office and HF-related tools

What we offer

• Benefits depending on employment status, which may include medical, dental, vision, life and disability cover, paid time off, flexible work options, well-being resources and an employee assistance programme
• Business travel insurance, retirement savings plan and employee stock purchase plan
• Training and development programmes and a global team environment