Senior Embedded Software Engineer, R&D

Sunlight Group; Kentucky; On-site; USD 90,000 - 130,000; Full time

Benefits offered by this job

Health and life insurance

Wellness program

Training opportunities

Career development

International mobility

Job summary

Sunlight Group in the United States is seeking a Senior Embedded Software Engineer to advance our BMS software team. You will design tests, build prototypes, and develop software for lithium battery products that meet customer requirements and high standards.

You will collaborate across hardware, systems, and testing teams, perform analyses, fix defects, and contribute to code reviews while aligning with certification and industry standards.

Qualifications

• Bachelor’s degree in Electrical Engineering or Information Sciences and Technology
• At least 5 years programming experience in C language
• Minimum 3 years' experience on microcontroller firmware development
• Experience with i2C, SPI, USB, UART and CAN bus networks
• Familiar with Git, SVN, Perforce, PTC Integrity
• Familiar with Jira and Confluence for configuration/requirements management
• Familiar with integrated development toolchains (IAR, KDbg, MS Visual Studio, MPLAB, VS Code)
• Fluent written and verbal communication skills in English
• Willingness to travel occasionally worldwide

Responsibilities

• Perform requirement analysis to gather, clarify, and document software needs for future products
• Develop detailed software designs, including architecture, module specifications, and interfaces
• Implement software components and features in accordance with design specifications and coding guidelines
• Execute software testing activities, including unit, integration, and system testing, to ensure functionality and quality
• Analyze, enhance, and extend existing software modules based on customer requirements
• Diagnose and fix defects in existing software components to improve stability and performance
• Troubleshoot and identify issues on operational battery systems, ensuring rapid root‑cause analysis and corrective action
• Collaborate in a cross‑functional engineering environment, working closely with hardware, systems, and testing teams
• Conduct code reviews to improve code quality and ensure compliance with certification and industry standards

Skills

5+ years C language

MCU firmware development

Protocols: i2C SPI USB UART CAN

Revision control: Git SVN Perforce PTC

Jira & Confluence

IDE/toolchains: IAR KDbg MS VS MPLAB V

English communication

Willing to travel worldwide

Education

Bachelor’s degree in Electrical Engineering or Information Sciences and Technology

Job description

AtSunlightGroup,wearepioneeringthefutureofenergystorageforindustrialandadvancedtechnologyapplications,drivenbyagenuinepassionforperformanceandcontinuousimprovement.Weoperatewithadeepawarenessofourenvironmentalimpact,fosteringacultureofopennessandrespectinallourinteractions.Withastrongcustomerfocus,werelentlesslyLeveragedataandinsightstodevelopinnovativesolutionsthatempowerourclientsandenhanceoursharedecosystem.Embracinganentrepreneurialspirit,wecultivateanagileandcollaborativeenvironmentwhereourpeopleareinspiredthroughopencommunication,continuouslearning,andtheopportunitytounlocktheirfullpotential.

OurVision:TransformingEnergyStorageSolutionsToPowerASustainableTomorrow.

OurMission:Wedelivercutting-edge,high qualityenergystoragesolutionsforindustrialandadvancedtechnology applications, drivinganall-electricfuture.

We're looking to hire a SeniorEmbedded Software Engineer for our BMS softwareteam. The role will focus in developing test methods, designing and executing experiments, and prototyping new innovations to improve existing or delivering new lithium battery products that meet customer requirements and company high standards. The position offers the opportunity to contribute directly to the development of the battery management system and to be part of a team committed to innovation and excellence.

Key activities and responsibilities of the role include:

• Perform requirement analysis to gather, clarify, and document software needs for future products
• Develop detailed software designs, including architecture, module specifications, and interfaces
• Implement software components and features in accordance with design specifications and coding guidelines
• Execute software testing activities, including unit, integration, and system testing, to ensure functionality and quality
• Analyze, enhance, and extend existing software modules based on customer requirements
• Diagnose and fix defects in existing software components to improve stability and performance
• Troubleshoot and identify issues on operational battery systems, ensuring rapid root‑cause analysis and corrective action
• Collaborate in a cross‑functional engineering environment, working closely with hardware, systems, and testing teams
• Conduct code reviews to improve code quality and ensure compliance with certification and industry standards

• Bachelor’s Degree in ElectricalEngineering or Information Sciences and Technology
• At least 5 years programming experience in C language
• Minimum 3 years' experience on microcontroller firmware development
• Experience of communication protocols (i2C, SPI, USB, UART) and CAN bus networks
• Ability to read and understand electrical schematics, datasheets, and wiring diagrams
• Familiar with revision control systems (e.g. Git, Svn, Perforce, PTC Integrity)
• Familiar with configuration and requirement management tools (eg: JIRA, Confluence)
• Familiar with integrated development toolchains (IAR, KDbg, MS Visual Studio, MPLAB, VS code etc)
• Fluent written and verbal communication skills in English
• Good communication skills
• Willingness to travel occasionally worldwide

Desired qualifications:

• Experience in one of the following communication protocols (Modbus, Ethernet, CAN-FD, CANopen) will be considered as an asset
• Programming experience with C++ will be considered as an asset
• Embedded Systems Knowledge on Energy Management Systems will be considered as a significant asset
• Development according to MISRA guidelines will be considered as an asset
• Development on regulated environment (eg: IEC61508, ISO 13849, ISO26262) will be considered as a significant asset

To start with, we give you the opportunity to thrive in a restless team and grow your potential in an innovative environment. As per your compensation and rewards package, this is a preview:

Competitive salary package and bonus scheme

Health and life insurance for you and your family

Employee wellness program & initiatives

Continuous training opportunities

Clear career paths & a developmental 360° feedback framework

International mobility opportunities