PLC/HMI Field Applications Specialist

Inframark; Norcross (GA); On-site; USD 90,000 - 120,000; Full time

Benefits offered by this job

Health insurance

401(k) plan

Paid time off

Wellness plan

Job summary

Inframark is seeking a Field Automation Systems (FAS) Engineer to join our Automation and Intelligence team in the Water/Wastewater sector. You will configure, program, test, and troubleshoot PLCs, HMIs, SCADA, and networking equipment at customer sites, delivering commissioning, FAT/SAT, and on-site support.

The role requires hands-on field work, strong problem‑solving skills, and customer‑facing communication.

Qualifications

• Technical degree in engineering or 3+ years field service in instrumentation, control systems, or automation.
• Water/Wastewater industry experience is highly preferred.

Responsibilities

• Configure, program, test, and troubleshoot industrial control systems (SCADA, PLCs, HMIs).
• Perform system startups and commissioning at field sites.
• Provide on-site customer support and training on operation and maintenance.
• Develop system narratives and documentation for commissioning and FAT/SAT as required.
• Mentor junior team members and ensure safety and standards compliance.

Skills

PLC programming

SCADA

HMI development

Networking

Control systems

Reading schematics

Field service

Customer communication

Education

Engineering degree or 3+ years field service

Water/Wastewater experience preferred

Tools

SCADA software

PLC programming tools

Networking hardware

Job description

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.

Position Summary

Inframark is seeking a Field Automation Systems (FAS) Engineer to play a crucial role in control system integration, commissioning, and customer support. This position involves configuring, programming, testing, and troubleshooting industrial control systems—including SCADA, PLCs, HMIs, networking equipment, and instrumentation—primarily in the Water/Wastewater Industry.

This is a hands-on field role that requires technical expertise, problem-solving skills, and a customer-focused approach. If you have experience with automation, control systems, and networking and enjoy working on-site to deliver innovative solutions, we encourage you to apply!

Key Responsibilities

Project Management & Coordination

• Review project requirements through meetings with the Project Manager and contract document analysis.
• Maintain clear communication with Project Managers, keeping them informed of task status, milestones, and budgetary concerns.
• Produce accurate and timely documentation, including timesheets, trip reports, and system updates.
• Follow established Best Practices, Development Standards, and Procedures to ensure high-quality project execution.

System Configuration & Programming

• Set up system servers, workstations, operating systems, networks, and peripheral equipment at job sites.
• Develop System Control Narratives to define automation logic.
• Program PLCs (Programmable Logic Controllers) and develop HMI (Human-Machine Interface) applications according to contract specifications.
• Conduct Factory Acceptance Testing (FAT) and Site Acceptance Testing (SAT) when required.

Field Installation & Commissioning

• Perform control panel commissioning, including field signal wiring, panel terminations, and I/O checkout.
• Conduct system startups, integrating PLC, HMI, instrumentation, and networking equipment.
• Ensure system hardware, network operation, SCADA functionality, and data collection align with project requirements.
• Provide on-site training for operators, supervisors, and administrative personnel on system operation and maintenance.

Technical Support & Documentation

• Provide on-call service support for customers, troubleshooting startup and warranty issues.
• Perform instrument installation and calibration services, including physical setup, wire terminations, commissioning, and documentation.
• Mark up control panel drawings to reflect final field modifications.
• Assist with integrating third-party systems and devices into automation networks.

Other Duties

• Participate in continuous improvement initiatives to enhance system efficiency.
• Mentor and train junior team members to develop a strong engineering workforce.
• Ensure all projects comply with safety and industry standards.

Qualifications & Skills

Education & Experience

• Technical degree in an engineering-related field OR 3+ years of field service experience in instrumentation, control systems, or automation.
• Experience in the Water/Wastewater industry is highly preferred.

Technical Skills

• Strong understanding of control systems, PLC programming, and SCADA applications.
• Knowledge of networking fundamentals, IP addressing, and communication protocols (Ethernet, Modbus, BACnet, etc.).
• Ability to read and interpret electrical schematics, P&ID diagrams, and contract documents.
• Hands‑on experience with control panel integration, troubleshooting, and commissioning.

Soft Skills

• Excellent communication skills to interact with customers, project managers, and team members.
• Strong problem‑solving abilities and attention to detail.
• Ability to work independently while contributing to a collaborative team environment.

Work Environment & Physical Requirements

Work Locations

• This job requires working in diverse environments, including:
• Office settings for project planning and documentation.
• Manufacturing shops and control panel assembly areas.
• Customer jobsites (indoor and outdoor), including industrial and water treatment facilities.
• Construction sites where physical tasks (lifting, climbing, working on ladders) may be required.

Work Conditions

• May require extended periods of sitting, standing, and manual work.
• Exposure to varying weather conditions in field environments.
• On-call availability for system troubleshooting, startup, and warranty support.

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.

Learn more about us at Automation and Intelligence - Inframark