**Company Description** **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. **Job Description** AECOM Enterprise Capabilities is seeking a Senior Engineer - Transmission & Distribution (Secondary) to be responsible for the design and delivery of secondary engineering systems for High Voltage Substations, including protection, control, automation, and communication systems. The role is primarily focused on producing high-quality engineering deliverables across all project phases (FEED, Detailed Design, Construction, and Commissioning support), ensuring technical compliance, constructability, and reliable operation of the substation. + Prepare and deliver secondary design documentation for HV Substations + Develop protection and control philosophies and contribute to Basis of Design documentation. + Perform engineering design of AC/DC auxiliary systems, control circuits, interlocking, and automation interfaces. + Support relay configuration and protection scheme design (distance, differential, overcurrent, busbar, transformer protection, etc.). + Ensure designs are practical, buildable, and aligned with project scope, schedule, and budget. + Work closely with the Project Engineer and/or Project Manager to support engineering planning, deliverables tracking, and technical coordination. + Coordinate with primary, civil, and SCADA/telecom disciplines to ensure integrated and clash-free design. + Provide limited technical guidance to junior engineers when needed, without formal mentorship responsibility. **Qualifications** + Electrical Engineer + 4 years or demonstrated equivalency of experience and/or education + Proven experience in Secondary Systems Engineering mainly for HV/EHV Substations. + Proven experience delivering secondary design packages for EPC / Design-Build substation projects. + Exposure to International standards (IEC, IEEE, ANSI, Australian Standards and Middle East region codes and standards) is preferred. + Strong knowledge of: Protection & control systems, substation secondary circuits and interlocking, AC/DC auxiliary systems, Relay protection schemes and logic. + Experience in producing complete secondary deliverables independently. + Ability to coordinate across multiple engineering disciplines. + English language is mandatory (Oral and written). **Additional Information** **ReqID:** REF58766U **Business Line:** Energy **Business Group:** DCS **Strategic Business Unit:** Enterprise Capabilities **Career Area:** Engineering **Work Location Model:** Hybrid