Senior Engineer Secondary Substations (T&D)

AECOM Enterprise Capabilities is seeking a talented for the Senior Engineer - Transmission & Distribution (Secondary) is 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 including:

  • Protection & control schematics
  • Wiring and interconnection diagrams
  • Cable schedules and termination drawings
  • Protection single line diagrams and logic diagrams
  • Panel layouts and equipment arrangements
• 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.
• Support projects across all phases: tender design construction testing and commissioning.
• Provide technical input for engineering estimates change management and technical risk mitigation.
• Coordinate with primary civil and SCADA/telecom disciplines to ensure integrated and clash-free design.
• Prepare and maintain high-quality engineering documentation including:
  • Design reports and calculations
  • Protection philosophies and relay setting inputs
  • Technical specifications and material requisitions
  • Perform self-checks and peer reviews of engineering deliverables to ensure accuracy and compliance.
• Support factory acceptance testing (FAT) site testing and commissioning documentation when required.
• Provide engineering support during construction energization and commissioning phases.
• Assist in resolving technical issues related to protection control and secondary systems.
• Provide limited technical guidance to junior engineers when needed without formal mentorship responsibility.
• Ensure all designs comply with:
  • International standards (IEC IEEE)
  • Utility and client technical specifications
  • Company engineering procedures and quality requirements

• Maintain awareness of industry developments and best practices in substation secondary engineering.

Qualifications :

Minimum Requirements

• Electrical Engineer 4 YORE 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).

Preferable Requirements

• Overall 6 years of work experience is preferred
• Master of Engineering degree (or equivalent education) in an appropriate engineering discipline from an accredited college or university.
• Strong focus on delivery quality and deadlines.
• Good coordination and communication skills within multidisciplinary project teams.
• Ability to work independently in a project delivery environment.
• Experience with relay families: ABB Siemens GE SEL (configuration / mapping / settings input).
• Site commissioning or field engineering experience.
• Knowledge of SCADA systems and communication protocols (IEC 61850 Modbus DNP3).
• Familiarity with control equipment: protection relays PLCs RTUs concentrators and bay controllers.
• Experience with engineering tools such as AutoCAD EPLAN ETAP.
• Understanding of IEC 61850 architecture and substation automation systems

Additional Information :

• Relocation assistance is not available for this position.
• Sponsorship for Colombia work authorization is not available for this position now or in the future.

At AECOM we are committed to maintaining a secure and trustworthy recruitment process and take any fraudulent hiring activity seriously. To support this commitment all newly hired employees are required to attend an in-person Day 1 onboarding at an AECOM office location as a condition of employment.

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

Experience: years
Vacancy: 1