SCADA Architect
About The Position
Executive Decisions is seeking a Principal Architect and SCADA/OT subject-matter expert to serve as design authority on an active municipal water-treatment modernization program for the New York City Department of Environmental Protection (NYC DEP), Bureau of Water Treatment. This is a senior, hands-on architecture role: the successful candidate will own the migration of legacy ABB distributed control system (DCS) logic to modern PLC/SCADA architecture, lead the AVEVA System Platform and historian design baseline, and carry design decisions through to client acceptance across two active treatment plants. This is a named Key Personnel position under an active client work order. The architect is expected to hold design authority, interface directly with the government customer, and remain committed through the full program period of performance. Candidates should recognize that this role is filling a critical incumbent seat and requires demonstrated depth — not adjacent or transferable experience alone.
Requirements
- ABB DCS migration (mandatory): hands-on experience decoding legacy ABB DCS logic and migrating it to PLC — owned independently
- AVEVA System Platform + PI / historian: architecture-level design and configuration experience
- PLC programming: demonstrated proficiency converting and developing PLC logic for industrial process control
- HMI development: design and build of operator interfaces for process-control environments
- System integration: integrating PLC, HMI, and historian layers into a coherent, validated SCADA system
- OT security standards: working fluency with NIST SP 800-82 and accepted municipal SCADA/OT modernization practice
- Architect-level ownership: history of holding design authority and interfacing directly with demanding institutional or government customers
- Experience level: senior/principal — typically 10+ years in industrial control systems with a substantial share in DCS/PLC migration and SCADA modernization
Nice To Haves
- Prior experience on municipal water / wastewater treatment (or comparable heavy-process) SCADA programs
- Experience delivering into NYC DEP or a large municipal utility environment
- Familiarity with milestone-based, firm-fixed-price delivery and formal client acceptance regimes
- Relevant OT/controls certifications (AVEVA, ISA/IEC 62443, PLC vendor certifications)
- Bachelor's degree in electrical, controls, chemical, or a related engineering discipline
Responsibilities
- Own the technical design baseline across both treatment plants and secure approval from AITHERAS and NYC DEP
- Establish system hierarchy, tag/naming conventions, and standardization across sites
- Serve as the accountable design authority for all PLC, HMI, and historian architecture decisions
- Lead the ABB DCS-to-PLC migration end to end: assessment, strategy, and PLC logic conversion for all distributed control units (DCUs)
- Direct PLC logic conversion, HMI development, system integration, and historian configuration / data-flow setup
- Identify and document legacy-system risk during assessment; distinguish pre-existing deficiencies from in-scope work
- Design and align AVEVA System Platform and PI/historian architecture across both sites
- Configure historian data flows and validate operational data integrity through cutover
- Lead functional testing and User Acceptance Testing (UAT); drive resolution of all Severity 1 defects prior to milestone acceptance
- Execute pilot deployment, cutover, and go-live across production DCU systems
- Deliver as-built documentation and lead knowledge transfer to NYC DEP operations staff
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What This Job Offers
Job Type
Full-time
Career Level
Senior
