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.

Position Summary

The Sr. Overhead Line (OHL) Engineer – High Voltage Transmission is responsible for the design, analysis, and engineering of overhead transmission lines for high voltage power networks. The role involves performing electrical and mechanical calculations, developing line routing and tower designs, and supporting project delivery from concept through construction.

The engineer ensures transmission line reliability, safety, and compliance with international standards while contributing to efficient and optimized transmission system designs.

Key Responsibilities

1. Transmission Line Design and Engineering

• Develop detailed engineering designs for HV and EHV overhead transmission lines (typically 110kV – 400kV+).
• Perform electrical and mechanical calculations required for transmission line design.
• Prepare and review:
  • Route layouts and alignment sheets
  • Tower spotting
  • Conductor and ground wire selection
  • Insulator string configurations
• Support tower loading calculations and structural inputs for tower design teams.
• Define clearances and right-of-way requirements according to standards.

2. Transmission Line Calculations and Technical Studies

Perform and verify typical OHL engineering calculations, including:

Electrical calculations

• Conductor current carrying capacity (ampacity)
• Corona and radio interference calculations
• Electric field calculations
• Line impedance, resistance and reactance
• Power transfer capability of transmission lines
• Ground wire shielding angle calculations
• Lightning performance and shielding analysis

Mechanical calculations

• Sag and tension calculations for conductors and earth wires
• Conductor blowout under wind conditions
• Temperature loading cases (everyday, maximum temperature, ice)
• Clearance verification under maximum sag conditions
• Structure loading cases (wind, ice, broken wire conditions)

Foundation and loading interface

• Tower loading trees and load combinations
• Interface with structural engineers for tower and foundation design.

Engineering calculations are typically performed using PLS-CADD / PLS-TOWER or equivalent software tools.

3. Project Engineering Support

• Assist in project planning and engineering coordination for transmission line projects.
• Collaborate with multidisciplinary teams including:
  • Structural engineers, Geotechnical engineers, Power system engineers, Environmental specialists

4. Standards, Compliance and Quality

• Ensure designs comply with international and regional standards such as:
  • IEC, IEEE, EN standards, British Standards and National Grid / DNO technical specifications.
• Apply company engineering procedures and quality assurance processes.
• Participate in technical reviews and design verification processes.

5. Field Engineering and Construction Support

• Provide engineering support during:
  • Transmission line construction
  • Stringing operations
  • Tower erection
• Review field modifications and resolve technical issues during construction.

6. Technical Documentation

Prepare and review engineering documentation such as:

• Transmission line design reports
• Calculation notes
• Tower spotting reports
• Conductor sag and tension charts
• Technical specifications
• Bill of quantities
• Construction drawings and alignment sheets

Provide clear documentation to support design reviews, client approvals, and project audits.

Mandatory Qualifications

Education

• Bachelor’s degree in Electrical Engineering, Civil Engineering, or Structural Engineering

Experience

• 6–7 years of experience in overhead transmission line engineering
• Experience working on HV transmission line projects (110kV – 400kV or higher)

Technical Skills

• Strong understanding of:
  • Transmission line electrical principles
  • Mechanical behavior of conductors and structures
  • Clearance and safety requirements
  • PLS-CADD, PLS-Tower/Pole advanced level
• Experience performing sag-tension and transmission line design calculations
• Familiarity with transmission line routing and tower spotting

Soft Skills

• Strong analytical and problem-solving skills
• Ability to work in multidisciplinary engineering teams
• Good communication and coordination skills.

Nice to Have

• Experience working on international transmission line projects
• Knowledge of EHV transmission line design (400kV+)
• Experience supporting construction or site engineering activities.

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.