BOLD designs high-performance battery systems for demanding sectors such as motorsport, aerospace, marine and defense: energy systems where every millisecond and every degree matter. The System Safety Lead is BOLD's engineering judgement on safety for an aerospace propulsion battery. You decide what the credible worst case is, whether the design contains it, and what the safety analysis means for the design assurance level of each BMS function.

What You'll Do
Thermal runaway and worst-case argument
• Define the thermal runaway worst cases at cell, module and string level, covering propagation, venting, coolant failure and submersion.
• Build the passive containment argument: no reliance on the cooling system, no propagation to other modules, and safe temperatures at the aircraft interfaces.
• Judge test results against the argument, and say clearly when the design does not yet contain the worst case. Initiator review
• Review and approve the thermal runaway initiator methods and trigger-cell locations, so tests represent the real worst case.
• Make sure initiators used in development stay valid for certification testing. Safety assessment and DAL input
• Lead the ARP 4761A analyses (FHA, PSSA/SSA, FTA, FMEA/FMES, CMA), traced to the aircraft safety assessments.
• Close the quantitative targets, including thermal runaway below 1E-7 per flight hour.
• Provide the FHA-based input to the DAL allocation of BMS functions, and sign off the thermal runaway design before it is frozen. Requisitos mínimos Experience What You Bring
• 5+ years in system safety on eVTOL, electric aircraft or high-voltage battery programs at an OEM or equivalent.




• Has built and defended a thermal runaway containment argument backed by test. Technical Skills
• Hands-on ARP 4761A: FHA, quantified FTA, FMEA/FMES, CMA.
• Deep understanding of lithium-ion cell failure modes and propagation.
• Abuse test planning and lab safety for cell and module testing. Leadership and communication
• Independent judgement, and the confidence to hold a position with design teams and customers.
• Clear written and verbal communication; fluent English. Desirable Skills
• RTCA DO-311A test experience
• Knowledge of DO-178C/DO-254 DAL allocation from the FHA Why Work With Us
• Own the safety case of a propulsion battery for a certified aircraft
• Work onsite with the design and test teams
• Engagement through type certification About BOLD BOLD is an international team with backgrounds in automotive, motorsport, aerospace, defense and aviation, working in two divisions.
• BOLD Applied Engineering (BAE) provides engineering services, mainly to elite motorsport teams, and transfers that know-how to defense programs.
• BOLD Technology (BT) develops high-voltage battery and electric propulsion systems for defense, tactical vehicles, military platforms, aviation and advanced mobility, including work for U.
S. Army programs. ? Inclusion & Diversity BOLD is an equal opportunity employer. We foster a culture where ideas thrive based on merit and competence, regardless of age, disability, race, religion, gender, sexual orientation, or family circumstances. Privacy Policy BOLD respects your privacy and is committed to protecting the personal information you share with us, please refer to Bold’s Privacy Policy for more details.

📌 System Safety Lead (Montmeló)
🏢 Bold
📍 Montmeló