Principal Engineer - Third Rail

Work with Us. Change the World.

At AECOM, we're delivering a better world. Whether improving your commute, keeping the lights on, providing access to clean water, or transforming skylines, our work helps people and communities thrive. We are the world's trusted infrastructure consulting firm, partnering with clients to solve the world’s most complex challenges and build legacies for future generations.

There has never been a better time to be at AECOM. With accelerating infrastructure investment worldwide, our services are in great demand. We invite you to bring your bold ideas and big dreams and become part of a global team of over 50,000 planners, designers, engineers, scientists, digital innovators, program and construction managers and other professionals delivering projects that create a positive and tangible impact around the world.

We're one global team driven by our common purpose to deliver a better world. Join us.

• Lead and manage the technical and commercial delivery of Rail Electric Track Equipment- ETE (Third Rail) projects, with a primary focus on rail Switch & Crossing (S&C) Renewal Works.
• Design of Positive Feeders and Negative Returns, including traction substation cabling, conductor rail layouts, negative bonding, hook switches, track isolating switches, Cable Routes and Cable Management Sleeper (CMS) systems in line with client specifications.
• Prepare key elements of design deliverables including technical reports, electrical calculations and CAD drawings in industry standard software. Act as Lead Engineer or Contractor’s Responsible Engineer (CRE), checker ensuring compliance with client requirements, industry standards and safety regulations. Provide technical and commercial oversight, including design planning, risk management and quality assurance
• Collaborate with multidisciplinary teams to deliver integrated and constructible design solutions. Ensure designs comply with all relevant regulations, including CDM and Health & Safety legislation. Familiarity with the full project lifecycle – from feasibility and concept design through to detailed design and construction support
• Ensure designs comply with all relevant regulations, including CDM and Health & Safety legislation. Demonstrated ability to work independently and as part of a wider delivery team
• Experienced in the use of international, UK Network Rail, and Railway Group Standards as well as the relevant British Standards and Eurocodes.

• Master of Engineering degree (or equivalent education) in an appropriate engineering discipline from an accredited college or university. 
• Chartered Engineer (or actively working towards chartership) with a recognised institution (e.g. IET) or Professional Engineer (PE) license or equivalent in the relevant field from any global organization
• 5 - 10+ years of experience in railway Electrification & Power design and delivery
• Experience in leading projects as a checker, CRE or Lead Engineer
• Deep knowledge of Rail ETE Third rail design, power system analysis, protection setting calculations
• Strong understanding of CDM Regulations, design safety principles and risk assessment
• Proficient in use of MicroStation, AutoCAD
• Strong technical writing, Excellent communication, coordination and stakeholder engagement skills
• A collaborative and proactive mindset with the ability to lead, mentor and influence others

At AECOM, you will have freedom to grow in a world of opportunity

Our Freedom to Grow hybrid working philosophy is the cornerstone of our success as a business – supporting a culture of flexibility, trust and performance at AECOM.

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 aecom.com. 

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, you’ll 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 you’ve always envisioned. Here, you’ll 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.