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Role Overview
We are seeking a highly experienced BESS Architect to lead the end-to-end system definition, architecture, integration, and validation of battery energy storage systems across utility-scale, C&I, and renewable-integrated applications.
This role is responsible for owning the entire engineering lifecycle (V-model):
System Requirements (SoR) → Architecture → Design → Integration → Validation → Commissioning
You will work across electrical systems, controls, software, and compliance, ensuring that the BESS solution is:
Key Responsibilities:
1. System Requirements & SoR Ownership
Define and own System Requirements (SoR / SRS):
o Functional: power rating, energy capacity, response time
o Safety: thermal runaway, isolation, fault handling
o Grid: voltage/frequency support, harmonics, grid code compliance
Translate:
o Customer requirements
o Utility/grid requirements
o Regulatory standards into detailed engineering specifications
Ensure end-to-end traceability:
o Requirement → Design → Verification → Validation
Maintain structured requirement documentation (e.g., DOORS, Jama, or equivalent)
2. System Architecture & Design
Develop complete BESS system architecture:
o DC side: battery packs, master-slave BMS
o AC side: PCS, transformers, switchgear
o Controls: EMS, SCADA, plant controller
Define:
o Single Line Diagrams (SLDs)
o Electrical layouts
o Interface Control Documents (ICDs)
Architect:
o Grid-connected & islanded systems
o Grid-forming and grid-following systems
Ensure design compliance with:
o IEC, UL, ISO, UN 38.3
3. Subsystem Integration
Lead integration of:
o Battery systems (LFP/NMC)
o BMS (Master-Slave / distributed)
o PCS (bi-directional inverters)
o EMS and SCADA systems
Define communication architecture:
o CAN, Modbus, IEC 61850, OPC-UA
Resolve integration challenges:
o Communication mismatches
o Control instability
o Interface incompatibilities
4. Design Validation (DV)
Define and execute Design Validation Plan (DVP & DVP&R)
Validate:
o Electrical performance
o Thermal performance
o Functional behavior
Perform simulations:
o Load flow, short circuit, protection (ETAP)
o Dynamic response to grid events
Validate subsystem interactions:
o BMS ↔ PCS ↔ EMS coordination
Ensure compliance with:
o UL 9540 / IEC 62933
5. System Integration & Bring-Up
Lead system-level integration strategy:
o Component → Subsystem → System
Define integration sequence and test procedures
Support lab-level integration and debugging
Coordinate with:
o Firmware teams
o Controls engineers
o EPC and commissioning teams
6. System Validation & Verification (V&V)
Define System Validation Plan (SVP):
o FAT (Factory Acceptance Test)
o SAT (Site Acceptance Test)
o Commissioning validation
Validate:
o Grid-forming / grid-following performance
o Black start capability
o Protection coordination
Conduct:
o Efficiency and performance testing
o Safety and fault scenario testing
Ensure readiness for:
o Certification
o Customer acceptance
7. Electrical System & Grid Integration
Design and validate:
o MV/LV systems
o Transformers (step-up/down)
o Switchgear and protection systems
o Substation interfaces
Perform studies using ETAP:
o Load flow
o Short circuit
o Relay coordination
o Arc flash
Ensure compliance with:
o Utility grid codes
o Harmonic limits
o Reactive power requirements
8. Renewable & Hybrid System Integration
Architect solar + BESS hybrid systems
Define:
o DC-coupled vs AC-coupled architectures
Optimize:
o Energy dispatch strategies
o System efficiency
Integrate with:
o PV inverters
o Hybrid PCS systems
9. Controls, EMS & SCADA
Define control philosophy for:
o Peak shaving
o Load shifting
o Frequency regulation
o Backup and islanding
Architect EMS:
o Forecasting
o Optimization algorithms
o Dispatch logic
Define SCADA:
o Monitoring
o Data acquisition
o Remote control
Ensure cybersecurity and utility interface readiness
10. Testing & Certification
Define multi-level validation strategy:
o Cell → Module → Pack → Container → System
Ensure compliance with:
o IEC (62619, 62933, 62477)
o UL (9540, 9540A)
o UN 38.3
o ISO (9001, 14001, 45001)
Interface with:
o Certification bodies (UL, TÜV, CPRI, Intertek)
11. Documentation & Engineering Governance
Own and review:
o SLDs, layouts, wiring diagrams
o Functional specifications
o Validation reports (DVP&R, FAT, SAT)
Establish:
o Design release processes
o Change management (ECR/ECO)
Support:
o Technical proposals
o Tendering activities
o Vendor evaluations
12. Commissioning & Field Validation
Support site activities:
o Installation
o Commissioning
o Troubleshooting
Validate real-world system performance:
o Efficiency
o Thermal stability
o Dispatch accuracy
Required Qualifications
Education
Bachelor's / Master's in Electrical Engineering / Power Systems / Energy Systems
Experience
5-8 years in:
o BESS / power systems / renewable integration
Proven experience in:
o System architecture
o Grid-connected projects
o Validation and commissioning
Technical Skills (Must-Have)
Core Systems
BESS architecture (DC & AC coupled)
PCS, EMS, BMS (Master-Slave)
Grid-forming & grid-following concepts
Electrical Expertise
Transformers, substations, switchgear
Protection systems & relay coordination
Electrical layouts and SLDs
Tools
ETAP (mandatory)
MATLAB/Simulink (preferred)
Standards
Strong working knowledge of:
o IEC, UL, ISO, UN 38.3
Protocols
CAN, Modbus, IEC 61850, OPC-UA
Good-to-Have
Microgrid architecture experience
EV charging + BESS integration
Digital twin / simulation exposure
Battery degradation modeling
AI-based EMS optimization
Key Competencies
Strong system engineering mindset (V-cycle)
Cross-domain integration capability
Analytical and problem-solving skills
Ability to balance technical performance vs cost
Strong stakeholder communication
Key Deliverables
System Requirements Specification (SoR/SRS)
Architecture & Interface Documents
Design Validation Reports (DVP&R)
Integration Plans & Reports
FAT / SAT Reports
Certification & Compliance Documentation
KPIs / Success Metrics
System performance & efficiency
First-time-right integration success
Compliance with standards
On-time commissioning
Reduction in field failures
CAPEX & OPEX optimization
Job ID: 146766451
