Weekend Electrical Transformer Design Engineer Jobs in Illinois

At MacKay, we believe great people are the foundation of our growth and success.
We are in an exciting phase of expansion, creating new opportunities for our employees to take on meaningful work, collaborate across disciplines, and build long-term careers. Whether your role is technical or part of our support services team, you play an important role in delivering high-quality work and helping our projects succeed.
We are seeking a driven, relationship-focused Electrical Design Engineer to join our team in Chicago, IL. This role involves designing at various voltages, equipment selection, preparing power systems, conducting arc-flash studies, and controls system design to meet our clients' expectations and needs.
This engineer will be required to travel for approximately 10% of the time.
This is a hybrid role based in our downtown Chicago office, which is conveniently located and easily accessible via public transit. The office features several gathering spaces, a workout space, a cafe, and a food truck, with lobby events geared toward mingling and networking.
We hope you will check us out!
Key Responsibilities:

• Perform engineering calculations for low and medium-voltage power distribution and motor control, including:
  • Short circuit current calculations
  • Voltage drop calculations
  • Breaker coordination studies
  • ArcFlash Analysis

• Establish and maintain effective working relationships with internal organizations, groups, team members, and individuals
• Perform analyses, prepare construction drawings, and write specifications for electrical packages
• Lead design development for smaller or less complex projects and support senior engineers on technically advanced projects.

Minimum Qualifications:

• Bachelor's degree in Electrical Engineering
• 1-3 years of relevant experience in industrial and/or commercial design projects
• Excellent verbal and written communication skills
• Experience with Microstation or Revit
• Proficient in Google Workspace
• Valid Driver's License

Preferred qualifications:

• Experience with low-voltage power design and instrumentation design
• Field experience with troubleshooting and installing systems
• Experience with process design of instrumentation and control systems.
• Knowledge of SCADA systems operation and design
• Knowledge of instruments to fit process requirements and coordination with overall SCADA & PLC systems

Why Join MacKay?
A people-first culture
At MacKay, we put people first. We are committed to creating an environment where employees can grow, contribute, and do their best work. We support well-being, encourage balance, and create space for people to succeed both professionally and personally.
Meaningful work and real impact
Our teams take on complex infrastructure and environmental challenges that support critical systems and shape the places where people live and work. Every role contributes to delivering that work and making it successful.
Growth and opportunity
We are in an exciting phase of growth, expanding across geographies, services, and markets. That growth creates opportunities for our employees to take on new challenges, build their careers, and contribute in new ways as the company evolves.
A strong and trusted foundation
Built on more than 50 years of experience, MacKay has developed a reputation for quality work, strong relationships, and dependable results. You'll be part of a team with a solid foundation and a clear direction for the future.
Opportunities to share in success
We provide opportunities for employees to participate in ownership and build long-term financial value as the company grows.
Our Values
At MacKay, our values guide how we work, collaborate, and support one another.

• Honesty. We build trust through transparency, integrity, and accountability.
• Dedication. We are committed to the success of our team members, clients, and communities.
• Relationships. We foster lasting connections that strengthen our work and the teams around us.

Who We Are
MacKay is an infrastructure and environmental services firm built on more than 50 years of experience and a growing collective of expertise.
We are in an exciting phase of growth, expanding our reach, strengthening our capabilities, and bringing together talented teams across the country. That growth is creating new opportunities for our employees to take on meaningful work, collaborate across disciplines, and build long-term careers.
Every role at MacKay contributes to the success of our projects and the clients we serve. Whether your work is technical or operational, you are part of a team that delivers quality, builds relationships, and moves projects forward.
In February 2026, 2IM joined forces with MacKay; this partnership represents a thoughtful, long-term step forward-expanding our capabilities, geographic reach, and resources while preserving the leadership, culture, and client relationships that define 2IM.
About 2IM:
2IM is a multidisciplinary engineering and environmental services firm based in Chicago, Illinois. Our team delivers planning, design, construction management, and program management services across transportation, infrastructure, utilities, aviation, and facilities markets. We are known for our technical expertise, responsiveness, and strong client relationships built on trust and performance.
During this initial integration period, 2IM continues to operate under its current brand, with our leadership and project teams remaining in place. At the same time, we now have the backing of a 350-person organization with expanded technical depth and opportunities across the Pacific Northwest, Southwest, and Midwest.
We're looking for dedicated, talented individuals who deliver excellence, thrive in collaborative environments, and value both meaningful work and work-life balance. If this sounds like you, we'd like to hear from you.
Please note that the salary information shown below is a general guideline only. Salaries are based upon candidate experience and qualifications, as well as various market and business considerations.
US Pay Range
$36-$43 USD
Full-time employees receive a well-rounded benefit package including access to our company-sponsored Medical (including an HSA High Deductible option), Dental, Vision, FSA, and Supplemental Life Insurance plans. We also offer 100% company-paid Life Insurance, Short-Term Disability, and Long-Term Disability coverage. Employees are eligible to participate in our company's 401(k) plan with up to a 4% match. Additionally, employees receive paid vacation and sick time, 11 paid holidays, and are able to participate in employee ownership options. MacKay pays for expenses associated with licensure as well as annual performance bonuses.
Employment requires passing a pre-employment background check and drug screen.
As a federal contractor, we participate in E-Verify and are proud to be an Equal Employment Opportunity Employer.
Open until filled.