Senior Critical Infra Engineer for AI Compute Reliability

Mistral; Paris; On-site; EUR 90,000 - 130,000; Full time

Benefits offered by this job

Healthcare coverage

Relocation support

Meal and transportation allowances

Job summary

Mistral seeks a senior engineer to provide technical assurance for critical electrical, mechanical, and life-safety infrastructure at colocation sites supporting high-density AI compute. You will own risk registers, assess utility resilience, and review maintenance strategies to safeguard AI uptime.

Reporting to Engineering Operations leadership, you will coordinate with colocation partners and OEMs, influence maintenance, and drive durable improvements across sites.

Qualifications

• 5–7+ years in critical facilities engineering, commissioning, data center operations or technical assurance in high-availability environments.
• Strong practical knowledge of critical electrical infrastructure (UPS, generators, MV/LV distribution, switchgear and protection) and mechanical systems (cooling plant, pumps, controls and heat rejection).
• Ability to review single-line diagrams, operating sequences, technical procedures, maintenance plans, commissioning evidence and root-cause analyses.
• Demonstrated experience troubleshooting complex infrastructure incidents and influencing external technical teams without direct line authority.
• Clear written and verbal English communication, sound judgment under pressure and willingness to travel and participate in incident escalation as needed.

Responsibilities

• Own and maintain the site technical risk register, including electrical and mechanical single points of failure, maintenance exposure, redundancy limitations, cooling capacity, liquid-cooling interfaces and common-mode failure scenarios.
• Assess the resilience of utility connections, MV/LV distribution, transformers, generators, UPS, switchgear, busways, protection systems, pumps, cooling plant, controls and monitoring against the contracted operating envelope.
• Review provider preventive maintenance strategies, schedules, critical asset condition and outstanding defects; identify maintenance deferrals and vulnerabilities that may affect AI compute availability.
• Critically review high-risk methods of procedure, electrical switching and isolation plans, planned impairments, work sequencing, contingency measures, rollback plans and restoration criteria.
• Validate the completeness and quality of technical documentation, including single-line diagrams, P&IDs, operating sequences, alarm matrices, capacity records, asset registers and operating procedures.
• Use BMS/EPMS trends, alarms, power-quality records and cooling telemetry to identify abnormal operating conditions, capacity constraints and deteriorating resilience before service is affected.

Skills

Critical facilities engineering

Electrical infrastructure knowledge

Mechanical systems understanding

Root-cause analysis

English communication

Job description

Mistral seeks a senior engineer to provide technical assurance for critical electrical, mechanical, and life-safety infrastructure at colocation sites supporting high-density AI compute. You will own risk registers, assess utility resilience, and review maintenance strategies to safeguard AI uptime.

Reporting to Engineering Operations leadership, you will coordinate with colocation partners and OEMs, influence maintenance, and drive durable improvements across sites.