
Engineer, III, Sr/Principal
Naperville, ILFull-time$77–161K/yrSeen todaySeen in employer's feed today
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At a glance
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Requirements
Credentials this posting asks for.
Job overview
The role leads engineering, project management, and technical problem-solving for natural gas processing, storage, and compressor station infrastructure. It provides technical oversight across electrical power systems, instrumentation and controls, equipment, procurement, construction, and regulatory compliance. The position may be filled at Engineering III, Senior, or Principal level, with scope and experience varying by level.
Skills & qualifications
Skills
Qualifications
Benefits
Full job description
About the Role
Put your engineering expertise to work on the natural gas infrastructure that supports customer demand. In this role, you’ll lead project engineering, project management, and technical problem-solving across engineering, construction, and equipment procurement. You’ll provide technical guidance for assets that meet GAS peaking and storage needs, bringing project leadership and expertise in natural gas process design and code requirements.
Opportunities at multiple levels: This position may be filled as Engineering III (Level 5), Senior Engineer (Level 6), or Principal Engineer (Level 7). Candidates who demonstrate advanced skills through work experience, education, and certifications may qualify for the more advanced positions.
What You’ll Do
Design critical infrastructure:
- Perform engineering assignments for the design and construction of natural gas processing and storage facilities and compressor station infrastructure at Nicor Gas and Virginia Natural Gas.
Guides electrical power systems:
- Provide technical support and oversight for the design, selection, and installation of utility power connections, on-site generation, switchgear, motor control centers, motors, lighting, power wiring, and grounding.
Support instrumentation and controls:
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Guide the design, selection, and installation of pipeline and plant instrumentation and control (I&C) systems. These include PLC-based process control and safety monitoring/shutdown systems, plant security monitoring and access control, and SCADA systems for pipeline monitoring and control.
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Move projects forward independently, working with little direct supervision to achieve successful completion.
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Provide subject matter expertise and technical support for natural gas processing equipment, including compressors, pumps, turbines, heat exchangers, heaters, tanks, valves, and piping.
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Direct, evaluate, and review technical specifications and requirements documentation.
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Review engineering drawings for compliance with DOT safety regulations and corporate standards and specifications.
Coordinate project partners:
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Develop statements of work to secure and manage engineering and construction service providers, inspectors, and other technical resources. Manage outside engineering and construction services to meet project goals.
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Develop and approve material and equipment specifications and prepare contract documents and purchase requisitions for procurement.
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Help identify acceptable vendors and contractors, evaluate bids, and coordinate with other departments to maintain consistency with corporate standards.
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Apply codes and standards to natural gas engineering, plant construction, and operations.
Lead project delivery:
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Serve as project manager, help define objectives and a comprehensive project design, outline requirements, assign tasks, and coordinate activities across operating units. Engage the appropriate staff and oversee progress to meet project objectives.
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Maintain working knowledge of relevant technologies and best practices, and ensure engineering standards, methods, and practices comply with regulatory requirements.
Improve system performance:
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Develop design options and recommendations to optimize systems and assess the feasibility of engineering solutions.
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Evaluate equipment and material use in gas and electric systems for operational performance, safety regulation compliance, and cost impact.
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Research and complete engineering and cost studies to develop proposals and recommendations.
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Stay current on industry engineering and construction trends and incorporate best practices into project plans.
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Participate in design and process safety reviews for existing and new facilities.
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Oversee or support construction activities, including inspection and commissioning.
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Develop engineering standards, methods, and guidelines.
Share your expertise:
- Train and mentor less senior engineers and provide technical direction to project team members.
What You’ll Bring
Required for All Levels
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A BA/BS in electrical engineering from an ABET-accredited university.
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Strong written and verbal communication skills, with the ability to communicate across all levels of the organization.
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Advanced proficiency in Microsoft Office applications.
Engineering III — Level 5
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5 years of progressive engineering experience in project management, project engineering, or construction management of natural gas or other pipeline facilities.
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2+ years of familiarity and experience with gas safety regulations or utility plant and/or pipeline construction practices.
Senior Engineer — Level 6
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7 years of progressive engineering experience in project management, project engineering, or construction management of natural gas or other pipeline facilities.
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3+ years of familiarity and experience with gas safety regulations or utility plant and/or pipeline construction practices.
Principal Engineer — Level 7
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10 years of progressive engineering experience in project management, project engineering, or construction management of natural gas or other pipeline facilities.
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3+ years of familiarity and experience with gas safety regulations or utility plant and/or pipeline construction practices.
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Demonstrated success leading programs or project teams.
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Recognition as a specialist in your area of expertise, with experience in natural gas engineering principles.
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Highly desirable: Professional Engineer (PE) licensure, Project Management Professional (PMP) certification, and/or an advanced degree/certification.
About Southern Company Gas
Southern Company Gas is a wholly owned subsidiary of Atlanta-based Southern Company (NYSE:SO), America’s premier energy company. Southern Company Gas serves approximately 4.2 million natural gas utility customers through its regulated distribution companies in four states and approximately 600,000 retail customers through its companies that market natural gas. Other nonutility businesses include investments in interstate pipelines and ownership and operation of natural gas storage facilities. For more information, visit southerncompanygas.com .
Southern Company (NYSE: SO ) is a leading energy provider serving 9 million customers across the Southeast and beyond through its family of companies. Providing clean, safe, reliable and affordable energy with excellent service is our mission. The company has electric operating companies in three states, natural gas distribution companies in four states, a competitive generation company, a leading distributed energy solutions provider with national capabilities, a fiber optics network and telecommunications services. Through an industry-leading commitment to innovation, resilience and sustainability, we are taking action to meet customers' and communities' needs while advancing our goal of net-zero greenhouse gas emissions by 2050. Our uncompromising values ensure we put the needs of those we serve at the center of everything we do and are the key to our sustained success. We are transforming energy into economic, environmental and social progress for tomorrow. Our corporate culture has been recognized by a variety of organizations, earning the company awards and recognitions that reflect Our Values and dedication to service. To learn more, visit www.southerncompany.com .
Southern Company invests in the well-being of its employees and their families through a comprehensive total rewards strategy that includes competitive base salary, annual incentive awards for eligible employees and health, welfare and retirement benefits designed to support physical, financial, and emotional/social well-being. This position may also be eligible for additional compensation, such as an incentive program, with the amount of any bonus/awards subject to the terms and conditions of the applicable incentive plan(s). A summary of the benefits offered for this position can be found here https://seo.nlx.org/southernco/pdf/SOCO-Benefits.pdf . Additional and specific details about total compensation and benefits will also be provided during the hiring process.
Southern Company is an equal opportunity employer where an applicant's qualifications are considered without regard to race, color, religion, sex, national origin, age, disability, veteran status, genetic information, sexual orientation, gender identity or expression, or any other basis prohibited by law.
Job Identification: 22446
Job Category: Engineering
Job Schedule: Full time
Company: AGL Services Company
Pay Range: $77,258.00 - $160,527.40 USD Annually: Base salary varies depending on a wide array of factors, which may include but are not limited to the specific office location, role, skill set, and level of experience. As required by local law, and at the time of this posting, this is the reasonable salary range for this role.
How this job compares
Set against the 7,711 open Engineering jobs on Olive Jobs, counted October 28, 2026.
- Pay
- This posting$77–161K/yr
- Illinois median$115–163K/yr162 salary ranges
- US median$117–194K/yr4,305 salary ranges
This range's midpoint, $119K, is 12% below the Illinois median midpoint ($135K) — in the middle half of Engineering salary ranges in Illinois.
- Openings
- Olive Jobs lists 222 open Engineering jobs in Illinois and 7,711 across the US. 3% of them nationwide are listed as remote or flexible.
- Hiring the most in Illinois
- Constellation18 open
- Caterpillar, Inc.14 open
- Exelon14 open
- Experience
- This posting asks for at least 5 years of experience; Engineering postings that state a minimum ask for 6 years at the median (5,341 postings).
- Education
- This posting asks for a bachelor's degree; 4,114 of the 7,711 open Engineering jobs (53%) ask for a bachelor's degree or higher.
Counted across the open, public US postings on Olive Jobs on October 28, 2026. Pay medians are the middle values of the low ends and of the high ends of postings that list both ends of a range in the same cadence (a yearly salary or an hourly rate); a range's midpoint is halfway between its ends. Pay and experience figures resting on fewer than 20 postings are left out.
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