Senior Transmission Line Engineer

I & S Group, Inc.; Sioux Falls (SD); On-site; USD 80,000 - 150,000; Full time

Benefits offered by this job

Medical, dental, and vision

Paid time off

Paid holidays and 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

Short/long-term disability

Job summary

ISG is seeking a Senior Transmission Line Engineer in Sioux Falls, SD to design and deliver overhead transmission projects from concept through construction. You will work with multidisciplinary teams, applying high‑voltage expertise and tools like PLS-CADD and AutoCAD to deliver reliable, innovative solutions.

The role involves developing detailed design packages, collaborating with ROW and environmental teams, and contributing to planning, estimation, and construction support.

Qualifications

• Bachelor’s degree in Civil or Electrical Engineering.
• 5–15+ years of experience in the design and analysis of transmission lines (25kV+).
• PE license preferred or ability to obtain.
• Proficiency with PLS-CADD, PLS-POLE, FAD Tools, and AutoCAD.

Responsibilities

• Design transmission line routes, configurations, and structures for 25kV+ systems.
• Perform structural analysis, sag‑tension calculations, and clearance checks.
• Develop detailed design packages for bidding, permitting, and construction.
• Partner with ROW, environmental, and project management teams to deliver projects.
• Conduct site visits to evaluate terrain and constraints, recommending design solutions.
• Support project planning with estimates, schedules, and procurement strategies.
• Provide construction‑phase support and address design changes.
• Maintain knowledge of client standards, industry codes, and best practices.

Skills

5-15+ years transmission line design

PE license

Strong communication

High voltage knowledge

Education

Bachelor's degree in Civil or Electrical Engineering

Tools

PLS-CADD

PLS-POLE

FAD Tools

AutoCAD

Job description

Senior Transmission Line Engineer

Department: Power

Employment Type: Full Time

Location: Sioux Falls, SD

Compensation: $80,000 - $150,000 / year

Description

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 stakeholdersDemonstrates 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