Senior Control Systems Design Engineer

Who is GrayMatterWe're the Thinkers who make machines speak.We're the Doers who make their stories matter. At GrayMatter, we uncover the industrial intelligence buried in clipboards, legacy systems, and human memory. We discover it, transform it, and turn it into insight. From the drill press to the boardroom, we help you think smarter and do better by listening to the machines you already trust. And that's where you come in. GrayMatter is dedicated to creating a team of unmatched talent in industrial technology. Our organizational culture encourages opportunities to learn and collaborate. Six core values make Team GrayMatter stand above the rest: Bias to Action, Batteries Included, Unbounded Curiosity, Everybody Wins, Built to Last, Actionable Insight. We are seeking a Senior Control Systems Design Engineer to serve as GrayMatter's on-site technical lead for automation, controls, instrumentation and SCADA across a multi-year South Florida county water and wastewater capital program. This senior, career-level role provides technical review and construction support across two water treatment plants and a well field, from design through construction, transition to operations and warranty services. The role focuses on review and oversight; hands-on PLC/SCADA programming, electrical design and installation are handled by partner teams. On-site in South Florida at county water treatment plants and well field. Relocation or extended travel should be expected. Key

Responsibilities

• Review and mark up specifications and drawings for the well field and treatment plants; support RFI responses and bid package review during design.
• Identify and document conflicts between design documents and field or implementation conditions, then drive workable resolutions that represent the county's best interests.
• Review medium- and low-voltage electrical design for operability and constructability, coordinating with an electrical review partner as needed.
• Review SCADA and PLC programming and panel design for consistency across panels, sites and processes; flag and help resolve inconsistencies across programming teams.
• Support construction-phase design and submittal reviews and field issue resolution, holding contractors to design requirements when rework is needed.
• Coordinate with the construction documentation administrator and program leadership to keep documentation, escalations and reporting current.
• Provide a consistent senior technical presence throughout the design-through-construction engagement.
• Maintain working knowledge of applicable industry standards, codes and local, state and federal regulations, and support compliance across design and construction.

Knowledge, Skills, and Experience Needed: Required:

• 15-20 years of relevant experience in industrial or municipal automation, controls, instrumentation and SCADA systems, ideally in water or wastewater treatment.
• Experience reviewing specifications, drawings, RFIs and construction submittals on capital projects.
• Working knowledge of PLC and SCADA control system design sufficient to review programming for consistency and correctness; hands-on programming is not required.
• Working knowledge of medium- and low-voltage electrical design principles sufficient to review operational fit; direct electrical design work is not required.
• Ability to coordinate across multiple design and engineering firms on a single program.
• Strong written and verbal communication skills, including the ability to document and escalate technical findings clearly.

Preferred:

• Professional Engineer (PE) license; helpful but not required.
• Experience on large water or wastewater capital programs involving multiple concurrent design firms.

Location, Schedule & Duration:

• Design and pre-construction phase (approximately the first 18 months; targeted November 2026 to mid-2028): 30-50% on-site.
• Construction phase (approximately months 18-48; targeted mid-2028 to late 2029): 80-90% on-site, when field activity is highest across all three project components.
• Target start is November 2026, with onboarding and design-review preparation beginning immediately and full engagement expected by December 2026. Estimated assignment length is 3-5 years, with potential extension to 6 years.