Transmission Line Engineer

Transmission Line Engineer
Department:

Power

Employment Type:

Full Time

Location:

Sioux Falls, SD

Compensation:

$80,000 - $150,000 / year

Founded in 1973, ISG is a multi-disciplinary, employee-owned firm providing architecture, engineering, environmental, and planning services to communities across the nation. Guided by our mission: simplify solutions and passionately design the future; we partner with clients to turn complex challenges into meaningful, lasting impact.

We are growing and looking to add a Transmission Line Engineer to support our Transmission Line team within our Power Group. In this role, you’ll design and deliver overhead transmission projects from concept through construction, playing a key role in shaping the infrastructure that powers communities. Working alongside multidisciplinary teams and leveraging tools like PLS-CADD and AutoCAD, you’ll apply your expertise in high-voltage systems to solve complex challenges and deliver reliable, innovative solutions.

ISG employee owners are motivated by a shared goal to stretch the limits of great design and positively influence each other, our clients, and the communities we serve. Within our Energy Business Unit, ISG’s Power Group plays a vital role in delivering resilient infrastructure solutions nationwide.

Essential Duties

Design transmission line routes, configurations, and structures to meet client specifications and regulatory standards for systems 25kV and above

Perform structural analysis, sag‑tension calculations, and clearance checks using industry-standard tools to ensure safe, efficient, and compliant designs

Develop detailed design packages, including drawings and specifications for bidding, permitting, and construction

Partner with multidisciplinary teams—ROW, environmental, and project management—to successfully deliver transmission projects

Conduct site visits to evaluate terrain, identify constraints, and recommend practical design solutions

Support project planning by assisting with estimates, schedules, and procurement strategies

Provide construction‑phase support, addressing design changes and ensuring alignment with project requirements and timelines

Maintain current knowledge of client standards, industry codes, and best practices

Engage with clients through regular meetings, providing updates and technical insight

Skills, Knowledge and Expertise

Bachelor’s degree in Civil or Electrical Engineering

5-15+ years of experience in the design and analysis of transmission lines (25kV and above)

Professional Engineer (PE) license or ability to obtain preferred

Commitment to staying current with industry trends, technologies, and best practices through ongoing learning

Strong ability to build and maintain effective relationships with team members, clients, and stakeholders

Demonstrates integrity, accountability, and sound independent judgment

Solid understanding of electrical and structural engineering principles related to high‑voltage systems

Knowledge of industry standards and codes such as NESC, IEEE, and ASCE

Proven analytical and problem‑solving skills to address complex technical challenges

Clear and effective verbal and written communication skills

Proficiency in design software including PLS-CADD, PLS-POLE, FAD Tools, and AutoCAD

Ability to manage assigned work independently with appropriate guidance

ISG Employee Owner Benefits

Medical, dental, and vision

Paid time off, pro‑rated amount available on your start date

Paid holidays and paid volunteer time

Paid parental leave

Bi‑annual profit sharing

Employee Ownership Stock Plan (ESOP)

401K retirement plan

Life insurance

HSA and FSA options

Bereavement leave

Supplemental voluntary benefits

Short term and long-term disability

Parking reimbursement, varies on office location

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