Battery Systems Engineer: Designing the Heart of Energy Storage
Battery systems engineers design cell and module configurations, thermal management systems, and BMS architectures that maximize energy density and safety. As NFPA 855 standards evolve, expertise in thermal runaway prevention and abuse tolerance testing becomes differentiating. LFP vs. NCA/NMC chemistry trade-offs and degradation modeling are core competencies.
Battery Systems Engineer
Role Deep-Dive
Industry context for this position
✓ Salary confirmed by employer
- OPTPE License (Professional Engineer)
- OPTNABCEP Battery Storage Installation Professional
- REQOSHA 30-Hour Construction
- REQNFPA 70E Electrical Safety
- REQArc Flash Awareness
- ▸Design and model BESS systems including sizing, single-line diagrams, and integration with inverters and transformers.
- ▸Review equipment specifications and evaluate vendor submittals for compliance with project requirements.
- ▸Ensure designs meet applicable safety standards including NFPA 855, IEEE 1547, and UL 9540.
- ▸Coordinate cross-functionally with project managers, procurement, and commissioning teams throughout the project lifecycle.
- ▸Provide field support and technical guidance during commissioning and startup activities.
Career path: Progression typically moves from Electrical/Mechanical Engineer → Senior Engineer → Principal/Staff Engineer → Director of Engineering.
Job Description
Requirements
Texas BESS Market
ERCOT · 6+ GW deployed (fastest-growing US market)
Texas operates the largest merchant BESS market in the US under ERCOT, where frequency regulation and ancillary service revenues drive project economics without long-term contracts. The deregulated market structure creates high demand for controls engineers, grid services specialists, and operational talent.
- ▸ERCOT Ancillary Services Market (FFR, RRS, ECRS)
- ▸Texas Interconnection Backlog Reform (PUCT)
- ▸IRA Investment Tax Credit (federal, applies statewide)
Skills & Keywords in This Role
Click any skill to browse other Systems Engineer roles requiring it.
📚 Related Career Guides
Deepen your knowledge of this role and the BESS industry:
- Battery Inverter Topology & Power Electronics→
★ Primary resource
- LFP vs. Sodium-Ion Chemistry: Trade-offs & Applications→
★ Primary resource
- NFPA 855 Safety Standards for Battery Energy Storage→
★ Primary resource
- BESS Project Lifecycle: From Development to Operations→
Secondary resource
Similar BESS Roles
Listing has expired
About the Company
Our mission is clear: to equip businesses, municipalities, and communities with advanced tools and strategies to harness, store, and distribute energy in the most efficient manner possible.
Visit websiteView all jobs from FlexGen Power Systems, LLC →