Field Applications Engineer

Job summary

The Field Applications Engineer supports the reliability and performance of battery-buffered DC fast charging systems through hands-on troubleshooting and root-cause investigations. They collaborate with cross-functional teams to analyze fleet data, validate engineering fixes, and ensure interoperability across various EV platforms.

Job details

EnerSys is a global leader in stored energy solutions for industrial applications. We have over thirty manufacturing and assembly plants worldwide servicing over 10,000 customers in more than 100 countries. Worldwide headquarters are located in Reading, PA, USA with regional headquarters in Europe and Asia. We complement our extensive line of Motive Power and Energy Systems with a full range of integrated services and systems. With sales and service locations throughout the world, and over 100 years of battery experience, EnerSys is the power/full solution for stored DC power products. What We’re Offering Paid Holidays Medical, vision and dental Life Insurance, long term disability Tuition reimbursement plan Defined Pension Plan Compensation Range: $75,900.00 - $94,800.00 Compensation may vary based on applicant's work experience, education level, skill set, and/or location. This is a current vacant position. Job Purpose The Field Applications Engineer supports the reliability, availability, and performance of battery-buffered DC fast charging and energy storage systems deployed in the field. Working closely with Field Service, Engineering, Operations, and Site Reliability Engineering, this position troubleshoots complex hardware, software, firmware, communication, networking, and vehicle-interoperability issues; analyzes system logs and fleet data; reproduces field failures; and validates corrective actions before and after deployment. This is a hands-on, cross-functional engineering role for someone interested in developing expertise across EV charging, battery energy storage, embedded systems, power electronics, networking, software, and data analytics. Approximately 30% travel is required, including international travel.Essential Duties and Responsibilities Maintain and improve the reliability, availability, and performance of deployed battery-buffered DC fast charging stations. Work closely with Enersys Service team to resolve issues Troubleshoot complex hardware, software, firmware, communications, networking, and system-level issues affecting charger operation. Lead or support root-cause investigations into charger downtime, unexpected reboots, failed charging sessions, recurring faults, and degraded performance.\ Perform EV interoperability and compatibility testing across different vehicle manufacturers, models, and charging implementations. Analyze charging protocols, system logs, telemetry, fault data, and charging-session behavior to diagnose vehicle-to-charger compatibility issues. QA/testing in Embedded or IoT systems - Develop software, scripts, diagnostic utilities, automated tests, and data-analysis tools that improve troubleshooting and system validation. Reproduce field failures in test environments and validate engineering fixes before deployment. Partner closely with Site Reliability Engineering to analyze large operational datasets and identify systemic reliability trends across the charging fleet. Develop metrics, dashboards, and analytical methods for understanding charger uptime, downtime, reboot frequency, fault recurrence, charging success rates, and recovery performance. Correlate software releases, hardware configurations, vehicle types, environmental conditions, and operational events with reliability outcomes. Translate field and fleet data into actionable engineering recommendations and clearly defined problem statements for hardware and software development teams. Support deployment and validation of corrective actions and measure their effectiveness after release. Collaborate across electrical, mechanical, firmware, software, systems, test, operations, field service, and SRE teams to drive issues through root cause and permanent resolution. Document technical investigations, root causes, corrective actions, test results, and lessons learned to continuously improve the charging platform. Qualifications Bachelor’s degree in Mechatronics Engineering, Electrical Engineering, Computer Engineering, or a related engineering discipline. Familiarity with Linux/Unix environments and programming languages such as C and C++. Electrical troubleshooting fundamentals, including the ability to read and interpret wiring diagrams, schematics, and circuit diagrams. Ability to collect, interpret, and analyze system logs, communication traces, diagnostic data, telemetry, and error codes to support troubleshooting and fault investigation. Strong problem-solving and analytical skills, with the ability to perform structured troubleshooting and root cause analysis. Basic familiarity with high-voltage electrical systems and electrical safety principles. Basic understanding of computer networking, including TCP/IP and IP-based communications. Familiarity with industrial and IoT communication protocols such as Modbus and MQTT. Understanding of common embedded communication buses and protocols, including CAN, I²C, and SPI. Strong technical communication and report-writing skills, with the ability to clearly document problems, investigations, findings, and recommended corrective actions. Ability and willingness to learn new technologies spanning EV charging, battery energy storage, power electronics, embedded systems, software, networking, and data analytics. Valid driver’s license. Ability and willingness to travel approximately 30%, including international travel to locations such as France, Italy, and the United States. EnerSys is committed to employment equity and fostering a workplace that respects and values diversity, inclusion, and dignity for all.We provide equal employment opportunities to all employees and applicants, and strictly prohibit discrimination or harassment of any kind based on race, colour, religion, age, sex, national or ethnic origin, citizenship, disability, sexual orientation, gender identity or expression, marital or family status, or any other characteristic protected by applicable Canadian and provincial laws". We encourage applications from members of equity-deserving groups, including women, Indigenous Peoples, racialized persons, persons with disabilities, and members of the 2SLGBTQIA+ community.

What you’ll do

The Field Applications Engineer supports the reliability and performance of battery-buffered DC fast charging systems through hands-on troubleshooting and root-cause investigations. They collaborate with cross-functional teams to analyze fleet data, validate engineering fixes, and ensure interoperability across various EV platforms.

Requirements

Candidates must hold a bachelor's degree in Mechatronics, Electrical, or Computer Engineering, along with proficiency in Linux and C/C++. Strong analytical skills, experience with electrical troubleshooting, and the ability to travel internationally are essential for this role.

Benefits

• Paid Holidays
• Medical Insurance
• Vision Insurance
• Dental Insurance
• Life Insurance
• Long term disability
• Tuition reimbursement plan
• Defined Pension Plan

Listed skills

• Electrical troubleshooting · Preferred
• Linux · Preferred
• C++ · Preferred
• Embedded Systems · Preferred
• Power Electronics · Preferred
• Root Cause Analysis · Preferred
• Technical Documentation · Preferred

Other relevant skills

Identified from the job description. Confirm important requirements above.

• Electrical troubleshooting
• Linux
• C
• C++
• EV charging
• Battery energy storage
• Embedded systems
• Power electronics
• Networking
• Data analytics
• CAN
• Modbus
• MQTT
• Root cause analysis
• Technical documentation
• System validation
• Report Writing
• Employment Equity
• Electrical/Electronic Troubleshooting
• Hardware Configuration Management
• Electrical Safety
• Energy Storage Systems
• Energy Systems
• Site Reliability Engineering
• Willingness To Learn
• Power Electronics
• Analytical Method
• Valid Driver's License
• Data Analysis Tools
• Test Operations
• Programming Languages
• Analytical Skills
• C (Programming Language)
• Data Analysis
• Software Development
• Electrical Engineering
• Automation
• Dashboard
• Unix
• C++ (Programming Language)
• Circuit Diagrams
• Communication
• Communications Protocols
• Compatibility Testing
• Computer Networks
• Computer Engineering
• High Voltage
• Electrical Systems
• Embedded Systems
• Sales

Job areas

• Engineering
• Energy
• Technology
• Manufacturing
• Data & Analytics
• Field Application Engineer
• Application Developer / Engineer
• Software Developers

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