Senior PLC Engineer

Giga is a rapidly growing company building AI infrastructure, offering a fast-paced, impactful, and innovative work environment. The company values speed, impact, and a team of top-tier operators shaping the future of AI.

Location: Remote (US, with a preference for Dallas, TX)

Responsibilities

• Design, develop, test, and commission PLC programs on Siemens and Rockwell platforms for cooling and mechanical plant equipment.
• Develop supervisory logic for the Master Plant Controller, including equipment staging, lead/lag, setpoint reset, failover, and plant-level coordination.
• Build and maintain the SCADA/HMI layer, including operator screens, alarming, trending, historian, and access control.
• Write safety logic, interlocks, and alarm strategies for high-power equipment.
• Integrate OEM-controlled equipment over various industrial protocols, defining and validating register and object maps.
• Build process simulations and digital twins to validate logic and tune control loops.
• Lead field commissioning, startup, and troubleshooting of live systems.
• Apply software engineering practices such as version control, code review, and documentation.
• Build software around the controls stack, including data pipelines, monitoring, telemetry, and automation.
• Translate architecture and sequence-of-operations into maintainable code.
• Operate in ambiguous environments and solve problems without established processes.

Requirements

• 5+ years programming industrial PLCs and SCADA/HMI systems in production environments.
• Deep hands-on experience with Siemens (TIA Portal, S7-1500/1200) and/or Rockwell/Allen-Bradley (Studio 5000, ControlLogix/CompactLogix), fluent in Structured Text.
• Proven SCADA/HMI development experience, including alarming, historian, and trending.
• Strong command of industrial communication protocols such as EtherNet/IP, PROFINET, Modbus TCP, OPC UA, and BACnet.
• Experience programming controls for mechanical, process, or HVAC plants.
• Track record of commissioning systems on live equipment with a safety-first mindset.
• Excellent communication skills and willingness to travel.

Benefits

• Subsidized health, dental, and vision insurance.
• Equity options in a growing startup.
• 401(k) with 4% employer match.
• Unlimited PTO.
• Parental leave.
• Flexible Spending Accounts (FSA) or Health Savings Account (HSA).
• Commuter benefits.

Additional Information

• Giga hires people who thrive in chaos, are proactive, and get things done.
• The company is an equal opportunity employer, committed to diversity and inclusion, and provides accommodations for individuals with disabilities.