Hiring Senior Engineer – Sacramento, CA (Hybrid) – Role Code: ZA-31012
This role supports our EPMS/SCADA and end‑to‑end service scopes.
Why This Role Exists
Protection relays and controllers generate data — status, alarms, metering, SOE — that has to reach operators through HMI/SCADA and reach historians for trending and analysis. This role exists because EPMS/SCADA integration bridges the gap between the protection layer and the monitoring layer, spanning multiple protocols (DNP3, Modbus TCP/RTU, BACnet/IP, SNMP) and HMI platforms (FactoryTalk, Wonderware, Ignition). You own the monitoring and control layer: point lists, HMI screen development, alarm rationalization, historian integration, and the BMS‑to‑power system boundary. When an operator sees a trip alarm or a historian trends power quality, your integration made that data path work.
What You Own
- EPMS/SCADA architecture design: data concentrator topology, protocol gateways, redundancy schemes
- HMI/SCADA development on FactoryTalk View, Wonderware, or Ignition platforms — operator graphics, navigation, alarm annunciation
- Point list engineering: RTAC‑to‑HMI point maps, Modbus/DNP3 register assignments, SOE tagging schemas
- Alarm rationalization: alarm matrices, priority assignments, flood prevention, operator notification logic
- Historian integration: meter‑to‑historian tag configurations, data collection automation, trending/reporting templates
- BMS‑to‑power system integration boundary: BACnet/IP segmentation, BBMD broadcast management, cross‑system monitoring
- Platform refresh/upgrade: FactoryTalk View server/client upgrades, cutover procedures maintaining operational continuity
Systems You’ll Touch
Software Tools
- Wonderware InTouch / System Platform
- Ignition
- FactoryTalk View Studio
- ALC WebCTRL
- AcSELerator
- RTAC
Vendor Platforms
- SEL
- Electro Industries (EIG)
Protocols
- DNP3
- Modbus TCP
- Modbus RTU
- BACnet/IP
- BACnet MS/TP
- SNMP
What Success Looks Like
First 90 Days
- Reviewed existing SCADA/HMI configuration on an active project — point lists, alarm setup, operator graphics
- Developed or modified HMI screens for an integration scope (FactoryTalk View, Wonderware, or Ignition)
- Produced a point list or alarm matrix for an RTAC‑to‑HMI data path
First 180 Days
- Owning EPMS/SCADA integration scope on at least one project — architecture through functional testing
- Historian integration delivered: meter data flowing through RTACs to dual historian servers with SOE tagging
- Alarm rationalization completed and validated through alarm flood testing
Required Background
- 7+ years SCADA/HMI or EPMS integration for critical power or industrial control systems
- HMI development on at least one major platform: FactoryTalk View, Wonderware InTouch/System Platform, or Ignition
- Multi‑protocol integration: DNP3, Modbus TCP/RTU, and at least one of BACnet/IP or SNMP
- Point list engineering: protocol‑to‑HMI data mapping, SOE tagging, alarm configuration
- Alarm rationalization experience: alarm matrices, priority tiers, flood prevention strategies
- Understanding of power system SCADA architecture: data concentrators, protocol gateways, redundancy
Preferred Background
- SEL RTAC‑3530 as SCADA data concentrator / protocol gateway
- BMS/BACnet integration experience (ALC WebCTRL or equivalent)
- Power quality metering integration (EIG Shark‑250 or equivalent)
- Historian platform experience (OSIsoft PI, Wonderware Historian, or FactoryTalk Historian)
- IT/OT boundary management: network segmentation between BMS and power system OT networks
What to Expect in the Field
- Travel 20–40% for site integration, functional testing, and cutover support
- Site hours: standard office hours for development; site hours during integration testing and SCADA cutover windows
- Customer‑Facing Interface with prime contractor controls engineers, BMS integrators, and facility operations for HMI requirements and alarm philosophy
- Documentation Heavy — point lists, alarm matrices, HMI screen specifications, historian tag configurations, integration test procedures
- Field Safety Minimal direct electrical exposure; NFPA 70E awareness for switchgear‑adjacent controls equipment
Why Ziggurat
- Full‑stack integration: from relay terminals through RTACs through HMI to historian — you see the complete data path
- Multi‑protocol environment: DNP3, Modbus, BACnet, SNMP — not a single‑protocol shop
- Your HMI screens and alarm logic are what operators rely on during real events — direct operational impact
- BMS‑to‑power integration boundary is a specialization few firms own — high‑value, low‑competition skill set
Hiring Process
- Screen – background review against role requirements, vendor platform experience, relevant certifications, project types, and standards familiarity.
- Technical Review – deeper evaluation of technical depth, review of sample work (relay settings files, protection study reports, commissioning test procedures, or SCADA configuration packages), or discussion of specific project scenarios.
- Interview – scenario‑based conversation with the principal engineer about coordination studies, commissioning plans, and troubleshooting during site acceptance testing.
- Exercise / Artifact Review – take‑home exercise or artifact walkthrough to demonstrate engineering methodology and decision making.
- Final Conversation – role scope, current project pipeline, working arrangements, and compensation.