Human Factors Senior Engineer

AECOM is seeking a Senior Human Factors Engineer to join our growing global Rail Systems and SESA team. Based in Madrid you will play a strategic role in delivering complex global safety-critical transportation programs.

This is a high-impact role that requires knowledge of rail standards (e.g. EN 50126 RIS-7100 RSSB guidance) strong systems integration expertise and a deep commitment to user-centred design safety assurance and regulatory compliance.

You will collaborate with clients multi-disciplinary engineering teams and safety specialists to embed Human Factors principles throughout the system lifecycle. You will also provide leadership in technical delivery mentor junior staff and support continuous improvement in AECOMs Human Factors capabilities.

Key Responsibilities

Strategic & Technical Leadership

        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 HF integration strategies and applicable standards (e.g. EN 50126 ISO 9241 RIS-7100 RSSB guidance).

        Experience producing Human Factors Integration Plans Human Factors Issue Logs and Human Factors Assessment Report and experience of conducting assessments such as Hierarchal Task Analysis.

        Execute HF design development activities including design reviews mock-ups simulators and structured user feedback studies.

        Lead certification planning and develop compliance strategies for HF-related system elements.

        Provide expert input into RAMS (Reliability Availability Maintainability and Safety) assurance activities.

        Translate regulatory and system requirements into clear verifiable HF design and usability criteria.

        Conduct and review task analyses HMI design assessments usability testing cognitive workload studies and error management strategies.

        Develop review and approve certification-related documentation (e.g. Issue Papers Equivalent Levels of Safety Test Plans Design Reports).

        Oversee planning and execution of HF-related test campaigns including fabrication witnessing and compliance evidence.

        Interface with certification bodies and regulatory stakeholders to demonstrate compliance and resolve design queries.

        Drive human-centred design within multidisciplinary teams ensuring HF is embedded in technical decisions and design trade-offs.

Project and Team Management

        Contribute to project proposals technical scoping and estimation of HF effort and cost.

        Ensure timely and high-quality delivery of HF work packages aligned with programme constraints and project milestones.

        Review and sign off technical documentation HF reports and deliverables to ensure accuracy and compliance.

        Mentor junior engineers and support performance development through project delivery and structured feedback.

Industry Engagement & Knowledge Development

        Maintain strong working knowledge of UK and international Human Factors and rail standards including regulatory frameworks such as CSM-RA and ORR.

        Represent AECOM in client meetings industry working groups and technical committees.

        Support the development and continuous improvement of HF methodologies tools and guidance within AECOM.

        Identify innovation opportunities and contribute to thought leadership technical training and capability building across the Human Factors discipline.

Qualifications :

Essential Qualifications and Experience

-Masters degree (MSc) in Human Factors Ergonomics or a closely related discipline

-A minimum of 10 years professional experience in Human Factors including at least 5 years in the rail or other regulated safety-critical environments

-Significant experience applying Human Factors principles to UK and international rail programmes with expert understanding of relevant standards (e.g. EN 50126 RIS-7100 RSSB guidance)

-Highly effective communication skills (written and verbal) with the ability to engage technical and non-technical stakeholders present to clients and influence outcomes across disciplines

-Proficiency in English

-Proficiency in Microsoft Office and HF-related tools

Additional Information :

About AECOM 

AECOM is proud to offer comprehensive benefits to meet the diverse needs of our employees. Depending on your employment status AECOM benefits may include medical dental vision life AD&D disability benefits paid time off leaves of absences voluntary benefits perks flexible work options well-being resources employee assistance program business travel insurance service recognition awards retirement savings plan and employee stock purchase plan. 

AECOM is the global infrastructure leader committed to delivering a better world. As a trusted professional services firm powered by deep technical abilities we solve our clients complex challenges in water environment energy transportation and buildings. Our teams partner with public- and private-sector clients to create innovative sustainable and resilient solutions throughout the project lifecycle from advisory planning design and engineering to program and construction management. AECOM is a Fortune 500 firm that had revenue of $16.1 billion in fiscal year 2025. Learn more at . 

What makes AECOM a great place to work 

You will be part of a global team that champions your growth and career ambitions. Work on groundbreaking projects - both in your local community and on a global scale - that are transforming our industry and shaping the future. With cutting-edge technology and a network of experts youll have the resources to make a real impact. Our award-winning training and development programs are designed to expand your technical expertise and leadership skills helping you build the career youve always envisioned. Here youll find a welcoming workplace built on respect collaboration and community - where you have the freedom to grow in a world of opportunity. 

As an Equal Opportunity Employer we believe in your potential and are here to help you achieve it. All your information will be kept confidential according to EEO guidelines. 

Remote Work :

No

Employment Type :

Full-time