
Battery State Estimation Senior SW Engineer
Required skills
- SOC
- SOH
- SOP
- embedded software
- C/C++
- MISRA compliance
- Agile/Scrum
- high voltage battery systems
- Kalman filter
- equivalent circuit models
Nice to have
- physics-based estimation
- model-based estimation
- hybrid data-driven estimation
- automotive programs
Role summary
General Motors is seeking a Senior Software Engineer specializing in Battery State Estimation. This role involves designing, developing, and productionizing algorithms for SOC, SOH, and SOP using various estimation techniques across different battery chemistries. The engineer will implement these algorithms in C/C++ as production-quality embedded software, adhering to safety and coding standards. The position requires a Bachelor's degree in a relevant engineering field and 5 years of experience as a Software Engineer or related role, with specific experience in embedded systems for high voltage batteries, state estimation algorithms, C/C++ development, and Agile/Scrum environments.
Job Description
DUTIES: Design, develop, and productionize robust battery state estimation algorithms for SOC, SOH, and SOP using physicsbased, modelbased, and hybrid datadriven estimation techniques across multiple battery chemistries. Develop observers and filters (e.g., equivalent circuit and electrochemical informed models, Kalman filter based approaches) that remain accurate across temperature extremes, power transients, sensor noise, and battery aging. Incorporate calendar and cycle aging effects into estimation logic so outputs remain truthful throughout the battery lifecycle and across chemistries and pack architectures. Implement estimation algorithms as production quality embedded software in C/C++, meeting GM standards for safety, cybersecurity, and coding discipline, including MISRA compliance. 10% domestic travel required. Hybrid Work Policy - 3 days In-office, 2 days remote - Must be able to report to local office.
REQUIREMENTS: Bachelor's degree in Mechanical Engineering, Electrical Engineering, Chemical Engineering, Computer Engineering, or related field of study and Five (5) years of experience as a Software Engineer, Design Engineer, Automotive Engineer, or related occupation. Two (2) years of experience with: Delivering embedded software for high voltage battery systems; SOC, SOH, and SOP estimation algorithms deployed in vehicles; C/C++ for embeddedsystems development; Agile/Scrum environments and cross functional automotive programs; and Leveraging Battery Data to generate actionable insights that improve batteryperformance, reliability, and lifecycle characteristics.
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Sample General Motors interview questions
- 1
Merge a New Interval Merge a new interval into a list of non-overlapping intervals. Input: intervals = [[1,2],[3,5],[6,7],[8,10],[12,16]], newInterval = [4,8] Output: [[1,2],[3,10],[12,16]] Explanation: The new interval overlaps with [3,5], [6,7], and [8,10], merging them all into the unified block [3,10].
codingmedium - 2
Determine the number of connected components in an undirected graph.
codingmedium - 3
Product of Array Except Self Calculate the product of an array except for self without using division. Input: nums = [-1,1,0,-3,3] Output: [0,0,9,0,0] Explanation: The single zero zeros out all products except at its own index, which cleanly multiplies the remaining elements.
codingmedium - 4
Unique Combinations that Sum to a Target Find all unique combinations in an array that sum to a target. Input: candidates = [2,4,6], target = 6 Output: [[2,2,2], [2,4], [6]] Explanation: Uses backtracking to find all valid combinations that sum to 6, allowing for explicitly repeated elements.
codingmedium - 5
Search for a word in a 2D board of characters.
codingmedium
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