BESS Systems Integration Engineer

AES; Louisville (CO); On-site; USD 94,000 - 113,000; Full time

Job summary

AES is seeking a Solutions Engineer – Systems Integration to advance the electrical, controls, and mechanical integration of battery energy storage systems (BESS) for utility-scale renewables. You will collaborate with senior engineers and cross-functional teams from requirements through deployment and field support.

You will ensure BESS subsystems interface safely and reliably across environments, applying established engineering methods and developing technical judgment while owning defined

Qualifications

• Bachelor’s degree in Electrical Engineering, Mechanical Engineering, Systems Engineering, or a related engineering discipline.
• 2–4 years of relevant engineering experience in BESS, renewable energy, power systems, controls, product development, systems integration, or complex electromechanical equipment.
• Foundational knowledge of electrical systems, controls, communications, power electronics, and system interfaces.
• Ability to read and review schematics, wiring diagrams, specifications, technical drawings, and bills of materials.
• Experience supporting engineering analysis, testing, commissioning, troubleshooting, or technical documentation.
• Working knowledge of structured problem solving, requirements management, verification, and configuration control.
• Ability to organize technical work, manage deliverables, and communicate effectively with internal teams, suppliers, and contractors.
• Willingness to travel to factories and project sites, approximately 25%.

Responsibilities

• Contribute to systems engineering activities for BESS products from requirements definition through deployment and operation.
• Develop and maintain system requirements, interface control documents (ICDs), specifications, compliance matrices, and other integration documentation.
• Support integration of energy storage, power conversion systems (PCS), safety systems, controls, communications, and related components.
• Review electrical designs, schematics, wiring diagrams, BOMs, and submittals; document findings and coordinate resolution.
• Apply BESS codes, standards, and project requirements with guidance from senior engineers.
• Support prototype builds, design verification, certification testing, manufacturing transition, and system-level validation activities.
• Analyze test and field data, document results, and recommend practical engineering actions.
• Contribute to lessons learned, standards work, RCAs, design tools, and continuous improvement of BESS design and integration practices.
• Perform vendor evaluations for BESS BOS component suppliers.
• Provide engineering support for integration of BESS products into utility-scale projects.
• Troubleshoot electrical, controls, communications, and system-level issues using structured problem-solving methods.
• Participate in root cause analyses, corrective actions, and preventive actions for testing, manufacturing, commissioning, or field issues.
• Coordinate with project engineering, commissioning, operations, quality, manufacturing, suppliers, integrators, and other stakeholders to resolve defined technical issues.
• Identify integration risks, maintain action tracking, and communicate technical status, decisions, and open items clearly.
• Develop technical guidance, work instructions, presentations, and training materials related to BESS integration, permitting, safety, and emergency response.
• Travel to factories, laboratories, and project sites to support inspections, testing, commissioning, troubleshooting, and technical reviews.

Skills

Electrical Engineering

Systems Engineering

BESS knowledge

Travel readiness

Education

Bachelor’s degree in Electrical Engineering, Mechanical Engineering, Systems Engineering, or related

Tools

2D CAD

3D CAD

Job description

AES is seeking a Solutions Engineer – Systems Integration to advance the electrical, controls, and mechanical integration of battery energy storage systems (BESS) for utility-scale renewables. You will collaborate with senior engineers and cross-functional teams from requirements through deployment and field support.

You will ensure BESS subsystems interface safely and reliably across environments, applying established engineering methods and developing technical judgment while owning defined