> Markdown version of [/jobs/ext/1206315-scada-principle-architect](https://www.wearedevelopers.com/jobs/ext/1206315-scada-principle-architect). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # SCADA Principle Architect - **Company:** Other Executive - **Location:** New York, NY, United States - **Experience:** Expert - **Salary:** $175,000.0 - $225,000.0 - **Contract:** Permanent contract - **Skills:** Computing Platforms, Data Flow Control, Supervisory Control and Data Acquisition (SCADA), Operational Data Store, Migration Manager, Data Streaming, Systems Integration, HMI Screens, Process Control Systems, Citect SCADA Software, Decoding - **Published:** July 8, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=170da136a9f18135 ## About the Role This role exists to move legacy ABB DCS control logic onto a modern PLC and SCADA platform. This is the single non-negotiable qualification. Candidates must be able to independently export, decode, and interpret legacy ABB DCS code and translate it into equivalent PLC logic - without relying on a second engineer to carry the ABB decode. Resumes that do not demonstrate hands-on ABB DCS migration experience will not advance. * Direct, hands-on experience exporting and decoding legacy ABB DCS logic (e.g., ABB control system families used in municipal / heavy-process environments) * Proven track record converting DCS control strategies into PLC logic, including control-narrative reconstruction where source documentation is incomplete * Ability to author a DCS-to-PLC migration strategy and risk analysis that a government customer will review and approve, * 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 PREFERRED QUALIFICATIONS * 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, * Rockwell: 5 years (Required) * PLC: 5 years (Required) * ABB Control Systems: 5 years (Required) * DCS to PLC Migration: 5 years (Required) ## Description 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., Architecture & Design Authority * 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 Legacy Migration & Implementation * 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 AVEVA System Platform & Historian * Design and align AVEVA System Platform and PI/historian architecture across both sites * Configure historian data flows and validate operational data integrity through cutover Testing, Cutover & Client Acceptance * 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 ## Related Videos - [Remote Driving on Plant Grounds with State-of-the-Art Cloud Technologies](https://www.wearedevelopers.com/videos/251-remote-driving-on-plant-grounds-with-state-of-the-art-cloud-technologies) - [Tour de Force: Open-Source LLM Inference Optimization from Simple to Sophisticated](https://www.wearedevelopers.com/videos/100099-tour-de-force-open-source-llm-inference-optimization-from-simple-to-sophisticated) - [Python-Based Data Streaming Pipelines Within Minutes](https://www.wearedevelopers.com/videos/1233-python-based-data-streaming-pipelines-within-minutes) - [Grappling With Clunky Old Software? 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