Principal Engineer - Transmission Lines (T&D) Structural Engineer

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We are seeking an experienced Principal Overhead Line (OHL) Engineer to join our growing Transmission & Distribution team, supporting major transmission infrastructure and energy transition projects.

In this role, you will provide technical support in design execution and delivery of Overhead Transmission Line systems, typically ranging from 132kV to 765kV+, supporting projects from feasibility and concept development through detailed design and/or construction support.

The role involves hands-on design, technical review if required, and interdisciplinary collaboration across project stages from concept to construction.

Key Responsibilities

• Execute designs and deliver engineering for HV/EHV overhead transmission lines (typically 132 kV-765kV+).
• Develop key deliverables including route alignments, tower spotting, conductor and earth wire selection, and insulator configurations.
• Define clearances, right-of-way requirements, and design criteria in accordance with applicable standards.
• Provide technical input to tower loading calculations and structural design teams.
• Lead PLS-CADD modelling and transmission line layout development for complex projects.
• Electrical studies: ampacity, corona and radio interference, electric field analysis, line impedance, shielding angle and lightning performance.
• Mechanical studies: sag-tension calculations, conductor blowout, loading cases (wind, ice, temperature) and clearance verification.
• Structural interface: tower loading trees, load combinations, and coordination with structural teams for tower and foundation design.
• Engineering analysis is typically performed using PLS-CADD, PLS-TOWER, ETAP, or equivalent transmission line design/studies software according to each discipline.
• Support or lead (if required) engineering delivery of overhead line projects across multiple project phases.
• Coordinate with structural, geotechnical, power systems, and environmental teams to deliver integrated solutions.
• Contribute to feasibility studies, route corridor assessments, and technical evaluations to identify preferred transmission line layouts.
• Provide technical input to proposals, project planning, and engineering deliverables.
• CAD & Drafting Coordination
• Guide and coordinate CAD designers and drafters in the preparation of drawings and models.
• Review and validate drawing quality, consistency, and compliance with standards ensuring timely
• Ensure designs comply with relevant standards including IEC, IEEE, EN/British Standards, and National Grid or DNO specifications.
• Participate in design reviews, technical verification, and internal quality assurance processes.
• Transmission line design reports and calculation notes
• Tower spotting reports and sag-tension charts
• Technical specifications, BoQs, and construction drawings
• Documentation should support design reviews, client approvals, and project audits

Minimum Requirements

• Bachelor’s degree in engineering (Civil, Structural, Mechanical, or Electrical Engineering) with +6 years of relevant experience in HV (132kV+) overhead line transmission design and delivery.
• Proven experience working on HV/EHV transmission line projects (132 kV - 765 kV+)
• Experience delivering engineering design packages across multiple project phases
• Strong knowledge of:
  • Transmission line electrical principles
  • Mechanical behaviour of conductors and structures
  • Clearance and safety requirements
  • Transmission line routing and tower spotting
• Advanced experience using:
  • PLS-CADD / PLS-TOWER / PLS-POLE
  • ETAP / ATPDraw
• Strong experience performing sag-tension and transmission line design calculations

• Strong analytical and problem-solving abilities, with capabilities for working in multidisciplinary engineering teams
• Ability to work independently in a project delivery environment.
• English language is mandatory (Oral and written)

Preferable Requirements

• Bachelor’s degree in engineering (Civil, Structural, Mechanical, or Electrical Engineering) with +8 years of relevant experience in HV (132kV+) overhead line transmission design and delivery.
• Desirable manager of following software: AutoCAD, REVIT, MathCAD, ATPDraw, CDEGS, HIFREQ

• 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 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.