Applied AI Software Engineer - Defense

Mistral.ai is building full-stack AI solutions for defense institutions and industry. This role offers the scope and autonomy of a senior technical individual contributor in a small team, ideal for engineers operating at Senior or Staff level who want broad ownership and deep involvement in implementation. You will help shape the architecture, write production code, and own substantial software components from design through deployment and operation.

You will design and build services for data ingestion, transformation, storage, querying, and operational workflows. Your work will include developing shared data models, APIs, and SDKs that enable other engineers to build applications on a consistent foundation. A core responsibility is making authorization a fundamental part of the architecture, defining and enforcing access controls with clear audit trails. You will solve complex problems involving data consistency, schema evolution, concurrency, performance, and failure recovery across distributed systems.