PLC Applications Engineer - TN

Inframark; Johnson City, Northern (TN, KY); Hybrid; USD 70,000 - 95,000; Full time

Benefits offered by this job

Health insurance

401(k) plan

Paid time off

Job summary

Inframark in Johnson City, TN, is seeking a PLC Applications Engineer to develop PLC applications, perform FAT/SAT testing, startup, and customer training. You will work with Allen-Bradley, Schneider, Siemens, and Emerson platforms, and collaborate with project teams.

The role requires traveling to sites, rotating on-call hours, and providing hands-on support to install and commission SCADA systems for water/wastewater projects.

Qualifications

• Minimum 2 years' experience in PLC programming.
• Experience with PLC hardware and programming software (AB, Schneider, Siemens, or Emerson).
• Effective oral communication with project teams and customers.

Responsibilities

• Receive project requirements and coordinate with the Project Manager.
• Maintain awareness of project budgets and milestones.
• Produce timesheets, trip reports, and project documentation.
• Follow Best Practices and Development Standards.
• Create System Control Narratives and PLC programs per documents.
• Install software and verify correct execution.
• Interface equipment with third-party systems via industry protocols.
• Participate in FAT and SAT when required.
• Demonstrate system functionality to Owner/Engineer/Contractor.
• Provide operator and admin training.
• Generate final project documentation.
• Support customers with technical assistance.
• Assist field service with PLC issue resolution remotely or on-site.

Skills

PLC programming

PLC hardware knowledge

Oral communication

Tools

Allen-Bradley

Schneider Electric

Siemens

Emerson

Job description

Posted Tuesday, August 25, 2026 at 5:00 AM

Join Inframark: Pioneering Automation and Intelligence

Step into the future with Inframark's award-winning Automation and Intelligence team. We deliver cutting-edge solutions in instrumentation and controls, industrial cybersecurity, data analysis, and remote network operations center services for water and wastewater plants. Elevate your career and join us at Inframark.

Why Work for Inframark?

Our dedication to sustainability and community impact drives us to ensure clean, safe water for future generations. Whether you're at the start of your career or looking for advancement, Inframark offers purpose-driven work and opportunities for growth.

• We offer an attractive salary package, including a generous benefits package with health, dental, and life insurance, 401(k) plan, paid time off, sick leave, holidays, and wellness plan.
• Compensation is commensurate with experience and includes a generous benefits package with health, dental and life insurance, 401(k) plan, paid time off, sick leave, holidays, and wellness plan.

Inframark is hiring!

Inframark offers a Competitive Salary and a full Benefits Package.

We offer Flexible paid time off as needed, with the understanding that work requirements are being met, and it does not impact the workload of others that depend on you.

We are looking for a PLC Applications Engineer with PLC expertise in developing PLC application monitoring and control software, performing factory and field testing, startup, customer training and other PLC related service work.

Essential duties and responsibilities:

• Receives project requirements and direction through meetings with the Project Manager and review of the contract documents.
• Keeps managers advised of the status of tasks and projects landmarks. Maintains awareness of project budgets and keeps the PM aware of issues that would adversely affect the budget.
• Produces timely, accurate project documentation such as timesheets, trip reports, etc.
• Follows established Best Practices and Development Standards and Procedures.
• Produces the System Control Narrative on projects.
• Develop Programmable Logic Controller (PLC) application programs based on the contract documents and System Control Narrative using the PLC manufacturer’s Programming Software.
• Installs all developed application software and required vendor software and verifies their accurate execution.
• Interfaces the company’s supplied equipment to third-party vendor systems via industrial communication protocols, when applicable.
• Participates in Factory Acceptance Testing (FAT) and Site Acceptance Testing (SAT), when required.
• Demonstrates overall system functionality to the Owner/Engineer/Contractor including hardware and network operation, SCADA monitoring and control, displaying data, alarming, and historical data collection for report generation.
• Provides training to operators, supervisors, and administrative personnel.
• Generates and gathers all required final project documentation.
• Provides technical assistance to Customers.
• Provides reactive and adaptable support to field service technicians to assist in solving and repair of PLC related issues at customer sites or by remote support as appropriate.

Qualifications:

Minimum 2 years' experience in PLC programming, preferably in the Water & Wastewater industry. PLC Application Engineers must have knowledge and experience

with PLC hardware and programming software (Allen-Bradley and/or Schneider and/or Siemens and/or Emerson).

Ability to communicate orally with management and other co-workers is crucial. Regular use of the telephone and e-mail for communication is critical. Sitting for extended periods in front of a computer monitor is common. Hearing within normal ranges is vital for communication with the Project Team and customers. Adequate vision is needed for using a computer monitor. Lifting of computer servers, workstations, and peripherals is required. Good manual dexterity for setting up computer equipment and attaching associated cables.

Work environment:

The job is performed both indoors at the office and at the jobsite. Activities include extended periods of sitting and extensive work at a computer monitor. This job includes the potential of working irregular hours with on-call availability to solve project startup and warranty problems.

Travel

Travel is required on a regular basis to start up, test, and demonstrate the company’s supplied SCADA monitoring and control systems.

CMSTECH1

To support a safe and secure workplace, all offers of employment are contingent upon the successful completion of background screening, drug testing, and driving record review where applicable.

Inframark is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, age, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against based on disability.