Senior Electrical Systems Engineer

Senior Electrical Systems Engineer, BatteriesScottsdale, Arizona, United StatesAt Axon, we're on a mission to Protect Life. We're explorers, pursuing society's most critical safety and justice issues with our ecosystem of devices and cloud software. Like our products, we work better together. We connect with candor and care, seeking out diverse perspectives from our customers, communities and each other. Life at Axon is fast-paced, challenging and meaningful. Here, you'll take ownership and drive real change. Constantly grow as you work hard for a mission that matters at a company where you matter.Your ImpactBatteries are a critical subsystem in all modern mobile devices and require careful attention to safety, performance, reliability, and regulatory compliance. As the Senior Systems Engineer for Batteries within the Devices Hardware Engineering team, you will serve as the subject matter expert for battery technologies across Axon's product portfolio. In this role, you will provide technical leadership and guidance on the specification, design, integration, validation, and lifecycle management of battery cells and battery pack solutions. You will bring structure, rigor, and engineering excellence to how Axon evaluates and safely adopts emerging battery technologies in a rapidly evolving industry where both primary and rechargeable battery cells continue to increase in power and energy density. You will lead the evaluation of new battery technologies, identify mature and suitable battery chemistries for Axon products, and drive battery strategy across multiple device platforms. Working closely with cross-functional engineering teams, you will establish battery selection criteria, lead supplier evaluations, and help standardize best-in-class battery solutions across the organization. You will also partner with battery cell and pack suppliers to develop, qualify, and deliver battery subassemblies that meet stringent safety, performance, quality, and regulatory requirements. These solutions will support high-volume manufacturing of mission-critical products used by first responders and enterprise customers to capture truth, protect lives, and accelerate justice in the communities they serve.What You'll DoDevelop cross-functional system requirements for battery sub-assemblies across body-worn, automotive, and fixed outdoor product linesDefine cell and pack requirements (capacity, voltage, cycle life, temperature range, discharge rate) for each programOwn the battery integration checklist for each new productEvaluate new battery chemistries and technologies from safety and performance perspectivesMonitor industry trends — new chemistries, form factors, energy density improvements — and translate into actionable roadmap inputDevelop and maintain Axon's battery technology roadmap and integration plan for future solutions across all device platformsLead technical RFP process in collaboration with cross-functional teams for supplier selectionProvide technical input into RFQs for battery cell and pack suppliersLead supplier qualification — review datasheets, test reports, and qualification data; push back when specs don't holdManage supplier relationships from qualification through productionLead battery system integration across body-worn, automotive (Fleet), and fixed outdoor (Outpost) productsWork with EE and ME teams on pack mechanical envelope, connector interfaces, thermal requirements, and protection circuit specsLead development of battery pack solutions inclusive of technology selection and design of BMS/PCM, Fuel Gauging, and Charger Interfaces, designed for high-volume manufacturing.Partner with suppliers to qualify and deliver subassemblies meeting safety, performance, quality, and regulatory requirementsLead detailed design reviews of supplier and internal BMS schematics and PCB layouts; review for protection coverage, design margins, fault handling, and safe operating area compliance.Review battery integration into product for compatibility with cell operating limitsWrite and execute battery characterization and verification test plans for NPI programs (capacity, cycle life, abuse, temperature)Lead Ongoing Reliability Testing (ORT) for secondary batteries across multiple suppliersInterpret test data, make go/no-go calls at program gates, and own battery-related failure analysisEnsure compliance with UN 38.3, IEC 62133, UL 2054, and applicable market/regulatory requirementsTrack regulatory changes impacting the portfolio and flag earlyPresent regularly on battery technology trends and NPI program status to cross-functional stakeholdersMonitor, report, and maintain a dashboard covering Axon's full fleet of batteries across all active programsWhat You BringBS or MS in Electrical Engineering, Systems Engineering, Chemical Engineering, or a closely related field6–9 years of battery systems, power systems, or related interdisciplinary engineering experienceIndustry experience with high-performance, battery-powered, size- and weight-constrained products such as body cameras, action cameras, wearables, or mobile communications devicesHands-on experience with battery pack development from concept through high-volume manufacturing — including cell selection, pack design review, and supplier qualificationExperience leading Ongoing Reliability Testing (ORT) programs for secondary batteries across multiple suppliersExperience with NPI program cycles (EVT, DVT, PVT) and the associated battery characterization and verification activities at each gateDeep familiarity with battery chemistry types (Li-ion, LiPo, LiFePO4, primary lithium) and their tradeoffs in safety, energy density, cycle life, and temperature performanceSolid understanding of battery pack architecture — cell configuration, BMS design, protection circuits, fuel gauging, and thermal managementSolid understanding of power, thermal, and mechanical constraints in integration of embedded battery assemblies across body-worn, automotive, and fixed outdoor form factorsFamiliarity with emerging battery technologies and ability to assess maturity and suitability for product integrationDemonstrated ability to lead technical RFP and RFQ processes for battery cell and pack suppliersProven ability to independently lead scoped engineering analysis and drive tradeoffs across EE, ME, firmware, product management, and test teamsExperience managing supplier relationships through qualification and into production, including audit and corrective action processesDemonstrated experience achieving regulatory certification for worldwide product deployment: UN 38.3, IEC 62133-2, UL 1642, UL 2054Working knowledge of additional standards relevant to battery fleet management and enterprise products: IEC 62619, UL 1973Familiarity with transportation and shipping requirements for lithium batteries (IATA, DOT 49 CFR)Proven experience developing systems engineering documentation: system architectures, block diagrams, interface diagrams, SRDs, and requirements traceability matricesExperience writing objective, testable engineering requirements and owning technical design specifications for battery subsystemsAbility to build and maintain battery fleet dashboards and present program status and technology assessments to cross-functional and executive audiencesSolid skills with documentation, analysis, and presentation tools: Word, Excel, PowerPoint; familiarity with PLM/requirements tools (e.g., Arena, Jira, Windchill, or equivalent) is a plusBenefits that Benefit YouCompetitive salary and 401k with employer matchDiscretionary paid time offPaid parental leave for allMedical, Dental, Vision plansFitness ProgramsEmotional & Mental Wellness supportLearning & Development programsAnd yes, we have snacks in our officesBenefits listed herein may vary depending on the nature of your employment and the location where you work.Don't meet every single requirement? That's ok. At Axon, we Aim Far. We think big with a long-term view because we want to reinvent the world to be a safer, better place. We are also committed to building diverse teams that reflect the communities we serve.Studies have shown that women and people of color are less likely to apply to jobs unless they check every box in the job description. If you're excited about this role and our mission to Protect Life but your experience doesn't align perfectly with every qualification listed here, we encourage you to apply anyways. You may be just the right candidate for this or other roles.The above job description is not intended as, nor should it be construed as, exhaustive of all duties, responsibilities, skills, efforts, or working conditions associated with this job. The job description may change or be supplemented at any time in accordance with