Senior BESS Engineer – Americas

Role Overview

• Serving as primary technical contact for US and Americas customers, building relationships with both technical and commercial stakeholders.
• Supporting pre-sales alongside Sales and Solution Engineering: technical discovery, data-readiness assessments, and architecture discussions.
• Leading technical onboarding: reviewing Single Line Diagrams, mapping sensor hierarchies (cell to string to rack to enclosure to PCS to system), and configuring sensor specifications in Databricks before KPI rollout.
• Managing KPI rollout and validation: releasing TWAICE KPIs, and diagnosing sensor data quality issues, insufficient cycling data, and aggregation errors.
• Leading performance analysis during commissioning and augmentation: interpreting capacity test results, flagging anomalies (cell imbalances, voltage spread issues, RTE gaps), and producing executive-ready outputs.
• Surfacing recurring product gaps and customer feedback to Product and Engineering.
• Running platform training for performance engineers, O&M leads, and asset managers.
• Up to 25% travel for customer meetings and on-site visits across the Americas.

Requirements

• BESS industry experience is required.
• You have worked as a performance engineer, systems engineer, or O&M engineer.
• You know what happens inside a BESS project from commissioning through the first year of operation.
• Degree in Engineering, Science, or a related field, or equivalent demonstrated BESS experience.
• Comfortable with Python in an analytical context: processing sensor data, validating signal quality, debugging anomalies.
• Databricks experience is a plus.
• Deep knowledge of lithium-ion battery behavior, degradation mechanisms, capacity fade, DC internal resistance, SoC estimation, and cell voltage/temperature imbalances.
• Familiarity with BESS data flows and ingestion protocols (Modbus, IEC-104, OPC-UA, REST API, SFTP).
• Working knowledge with US wholesale power markets and ISOs/RTOs (CAISO, ERCOT, PJM, MISO, SPP, ISO-NE, NYISO).
• Clear communicator, strong English required; Spanish is a plus for broader Americas coverage.
• Organized, customer-focused, and comfortable in a fast-moving startup.

Tech Stack

• Python
• RTOS

Benefits

• Flexible Working: We trust you to get the job done.
• Remote-first with autonomy on how and where you deliver.
• Everyone comes together for our annual kick-off at Munich HQ.
• Equity Participation: Every employee is offered a stock-option plan so you can share in TWAICE’s success.
• Perks: Health coverage, 401(k), team offsites twice a year.