Legion Intelligence

Senior Software Engineer - Machine Learning (Remote US)

Legion Intelligence
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2 months ago
Remote, United StatesStaff+

Base Salary

$160k - $200k/yr

Responsibilities

  • Design, build, and maintain core AI capabilities for Legion’s enterprise AI platform.
  • Develop reusable functionality for model integration, reasoning, multimodal understanding, structured generation, evaluation, and other foundational AI capabilities.
  • Optimize AI systems through experimentation, quantitative evaluation, context engineering, and iterative refinement.
  • Build backend services, APIs, and distributed AI systems for production use.
  • Deploy scalable AI services with cross-functional teams to support AI-powered product experiences.
  • Prototype emerging AI techniques and convert successful experiments into production-ready capabilities.
  • Debug and improve production systems’ latency, reliability, observability, scalability, and operational performance.
  • Optimize AI systems for performance, reliability, scalability, and cost.

Requirements

  • Bachelor’s or master’s degree in computer science, machine learning, or a related technical field, or equivalent practical experience.
  • 5+ years of experience building production software systems.
  • Strong software engineering skills in Rust, Python, or similar programming languages.
  • Experience building scalable backend services, distributed systems, APIs, or data-intensive applications.
  • Hands-on experience integrating large language models or other foundation models into production applications.
  • Ability to design, evaluate, and improve AI systems through experimentation and quantitative evaluation.
  • Familiarity with structured outputs, tool calling, context engineering, multimodal systems, or AI workflows.
  • Understanding of software engineering practices including testing, observability, reliability, and maintainability.
  • Ability to own technically ambiguous projects from design through production.
  • Preferred qualifications include reusable AI or shared AI service development, open-source foundation model deployment or serving, evaluation frameworks, benchmarks or datasets, Kubernetes, cloud-native infrastructure, distributed systems, Rust, RAG, multimodal AI, AI agents, and model orchestration.
  • U.S. citizenship or permanent residency is required, and the candidate must be permanently domiciled in the United States.

Benefits

  • Remote work within the United States.
  • The role supports secure, mission-critical AI systems developed in collaboration with government and enterprise partners.
  • Applicants must provide legally authorized identification through the CLEAR ID third-party verification provider.
Legion Intelligence

About Legion Intelligence

51-200 employees

Legion Intelligence builds secure agentic AI infrastructure for mission workflows, offering the Legion Platform for governed agent orchestration and Centurion, a deployable edge system for disconnected environments. It sells to government and regulated enterprises through software licensing and deployment services across cloud, on-premise, classified, and air-gapped networks. Founded in 2022 and headquartered in San Francisco, it has deployments with U.S. SOCOM, XVIII Airborne Corps, the U.S. Air Force, and the Department of Energy.

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