Controls Engineer in Rockville

Energy Jobline ZR; Rockville (MD); On-site; USD 90,000 - 130,000; Full time

Benefits offered by this job

Medical, Dental, and Vision Insurance

401(k)

Generous PTO

Performance-based incentives

Professional development opportunities

Collaborative team culture

Employee Assistance Program

Job summary

Critical Systems LLC is seeking a seasoned Controls Engineer to design, program, commission and maintain Building Automation Systems for commercial, healthcare, and data-center facilities in the Rockville area. You will work with Delta Controls, JCI, Niagara N4 and other BAS platforms, applying HVAC knowledge and control sequences to deliver reliable system integration.

Responsibilities include developing BAS controls, graphics, alarms, and trends; performing commissioning, startup, and testing;

Qualifications

• Bachelor’s degree in a related technical field or equivalent experience.
• Minimum 3 years in HVAC controls or building automation.
• Experience with Delta Controls, JCI, Niagara N4, BACnet and Modbus.

Responsibilities

• Design BAS control solutions for HVAC systems in commercial/industrial facilities.
• Program, configure, and commission control systems using Delta, JCI, and Niagara platforms.
• Develop and implement control sequences, graphics, alarms, trends, and integrations.
• Review plans and sequences of operation to ensure proper design.
• Perform point-to-point verification, startup, commissioning, and testing of systems.
• Troubleshoot hardware, software, networks, and field devices to resolve issues.
• Coordinate with customers, contractors, and vendors throughout the project lifecycle.
• Provide technical support during installation, startup, and warranty periods.
• Maintain project documentation, backups, and commissioning reports.
• Support scheduling and field activities to meet timelines and budgets.
• Assist in customer training and turnover meetings.
• Stay updated with industry standards and BAS platform enhancements.

Skills

HVAC controls

BAS programming

Problem solving

Education

Bachelor's degree in Mechanical Engineering, Electrical Engineering, Controls Engineering, Computer Engineering or related field

Tools

Delta Controls

Johnson Controls (JCI)

Niagara Framework (N4)

BACnet

Modbus

Job description

Job DescriptionJob Description

Job Summary:

The Controls Engineer will support the design, programming, commissioning, and maintenance of Building Automation Systems (BAS) and HVAC control systems for commercial, industrial, and mission-critical facilities. The Controls Engineer will have hands‑on experience with Delta Controls, Johnson Controls (JCI), Niagara Framework, and other BAS platforms, along with a strong understanding of HVAC systems, control sequences, and system integration.

The Controls Engineer will work closely with project managers, customers, contractors, and internal teams to deliver high-quality control solutions from project conception through commissioning and ongoing support.

Duties and Responsibilities:

• Design and develop Building Automation System (BAS) control solutions for HVAC systems.
• Program, configure, and commission control systems utilizing Delta Controls, Johnson Controls (JCI), and Niagara Framework platforms.
• Develop and implement control sequences, graphics, alarms, trends, and system integrations.
• Review project plans, specifications, and sequence-of-operation documents to ensure proper system design and implementation.
• Perform point-to-point verification, startup, commissioning, and functional performance testing of control systems.
• Troubleshoot hardware, software, communication networks, and field devices to resolve system issues.
• Integrate HVAC equipment including air handling units, chillers, boilers, VAV systems, pumps, cooling towers, and energy management systems.
• Collaborate with customers, consulting engineers, contractors, and vendors throughout the project lifecycle.
• Provide technical support during installation, startup, and warranty periods.
• Maintain accurate project documentation, programming backups, commissioning reports, and as‑built documentation.
• Support project scheduling and coordinate field activities to ensure projects are completed on time and within budget.
• Participate in customer training and turnover meetings.
• Stay current with industry standards, emerging technologies, and BAS platform enhancements.

Required Qualification:

• Bachelor's degree in Mechanical Engineering, Electrical Engineering, Controls Engineering, Computer Engineering, or a related technical field .
• Equivalent combination of education and relevant industry experience may be considered.
• Minimum of 3 years of experience in HVAC controls, building automation, or controls engineering.
• Experience with:
  • Delta Controls
  • Johnson Controls (JCI)
  • Niagara Framework (N4)
  • BACnet and Modbus communication protocols
  • HVAC control systems and sequences of operation
• Experience with commissioning, startup, and troubleshooting of BAS systems.
• Ability to read and interpret mechanical drawings, electrical schematics, and construction documents.
• Proficiency with Microsoft Office applications.
• Excellent analytical, troubleshooting, and problem‑solving skills.
• Strong written and verbal communication skills.

Qualifications:

• Niagara N4 Certification
• Delta Controls Certification
• Johnson Controls Metasys experience
• Experience with data centers, healthcare facilities, laboratories, or mission-critical environments
• Knowledge of energy management and system optimization strategies

Benefits at Critical Systems LLC:

• Medical, Dental, and Vision Insurance
• 401(k)
• Generous Paid Time Off (PTO)
• Competitive salary with performance-based incentives
• Opportunities for professional development and continuous learning
• Collaborative, growth-oriented team culture
• Employee Assistance Program

Critical Systems LLC is an Equal Opportunity Employer