Company Description EndurEnergy Systems, Inc is a pioneer of cutting-edge Battery Energy Storage Systems (BESS) designed to optimize energy efficiency and support the transition to renewable power solutions. Our innovative technology empowers businesses, utilities, and energy developers to safely enhance grid reliability and achieve sustainability goals. Role Description EndurEnergy Systems, Inc is seeking a customer-focused, detail-oriented Technical Support Engineer to support our BESS customers. You will answer inbound customer support calls, create and close support tickets, and maintain clear support case documentation. You will also produce routine support reports to track performance and identify recurring issues. This position is adecuado for someone who enjoys structured troubleshooting, calm customer communication, and end-to-end ownership of support cases. Key Responsabilities
• Inbound customer support (phone + email): Respond to customer technical support requests, gather key information, and guide customers through troubleshooting steps with clear, professional communication.
• Ticket ownership & closure: Create, update, and close support tickets with accurate categorization, troubleshooting notes, customer communications, and documented resolutions; maintain consistent follow-up and status updates.
• System commissioning: Guide customers through commissioning steps (hardware settings, firmware updates, inverter/battery communication) with clear, professional communication.
• Technical triage & troubleshooting: Perform structured troubleshooting for common BESS/ESS issues (hardware, firmware/configuration,



inverter/battery interactions, alarms, and basic communications/monitoring concerns). Gather and organize required evidence (error codes, alarm history, firmware versions, system configuration, photos, logs, timelines) to enable quick resolution.
• Documentation & knowledge capture: Maintain high-quality case documentation; contribute to internal knowledge articles to reduce repeat issues and improve consistency.
• Reporting: Produce and maintain support reports (ticket volume, issue categories, recurring trends) and share insights for continuous improvement. Qualifications
• B.
S. in Electrical Engineering or related fields (Mechanical, Mechatronics, Renewable Energy).
• Experience supporting BESS/ESS, batteries (LFP a plus), inverters (hybrid or AC-coupled), or solar + storage systems.
• Demonstrated ability to drive tasks to closure, data analysis, and trend identification.
• Strong written documentation skills (clear case notes, customer summaries, escalation packages).
• Proficiency with Excel for tracking and reporting (filters, pivots, basic charts preferred).
• Good interpersonal skills.
• Fast learner.
• Occasional travel to customer sites for onsite support,



commission and training, in LATAM and US.
• Strong communication, organization, and problem-solving skills; ability to remain calm and professional during customer escalations.
• Ability to flight to the USA for training
• Fluent in English Preferred
• 2+ years of experience in product engineering, technical customer support, product support, or service desk (phone-based support strongly preferred).
• Experience in electrical data analysis (current, voltage, power, energy, heat generation).
• Familiarity with common ESS troubleshooting inputs: alarm history, logs, monitoring portals, firmware versions, and basic networking concepts.
• Awareness of communications used in energy systems (helpful, not required): CAN, RS485, Ethernet.
• Familiarity with relevant standards/codes (helpful, not required): UL 9540/9540A, NEC 706/480.
• Experience using a ticketing/CRM tool (e.g., Zendesk, Jira Service Management, Salesforce Service Cloud, Freshdesk). What Success Looks Like
• High-quality ticket closures with complete documentation and accurate categorization
• Strong customer satisfaction driven by clear communication and timely follow-up
• Clear reporting that highlights trends and supports continuous improvement Why Join EndurEnergy Systems, Inc? Be part of a forward-thinking company driving the future of energy storage and sustainability. Work with differentiated BESS products in a fast-growing market. Opportunity to grow technical depth and influence process improvements.

📌 Technical Support Engineer (Guadalajara)
🏢 EndurEnergy Systems
📍 Guadalajara