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Legion Intelligence

Secure, sovereign AI platform for enterprise

Senior Software Engineer, Machine Learning

AI Application Engineering +1Confirmed live in the last 24 hours
Full-timeRemote in USA$170k - $200k

About the Job

Requirements

  • A bachelor's or master's degree in Computer Science, Machine Learning, or a related technical field, or equivalent practical experience.
  • At least 5 years of experience building production software systems.
  • Strong software engineering skills and experience with Rust, Python, or similar programming languages.
  • Ability to build 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, quantitative evaluation, and continuous iteration.
  • Familiarity with modern AI engineering patterns such as structured outputs, tool calling, context engineering, multimodal systems, or AI workflows.
  • Understanding of software engineering best practices, including testing, observability, reliability, and maintainability.
  • Ability to take ownership of technically ambiguous projects from design through production.
  • U.S. citizenship or permanent U.S. residency is required due to U.S. government contract requirements.
  • Must be domiciled in the U.S. and maintain a permanent U.S. home address.
  • Must provide legally authorized identification to verify eligibility through the third-party provider CLEAR ID.

Responsibilities

  • Design, build, and maintain the core AI capabilities that power intelligent experiences across the platform.
  • Develop reusable capabilities for model integration, reasoning, multimodal understanding, structured generation, evaluation, and other foundational AI functionality.
  • Optimize AI systems through experimentation, quantitative evaluation, context engineering, and iterative refinement.
  • Build backend services, APIs, and distributed AI systems using production software engineering experience.
  • Partner with cross-functional teams to deploy scalable AI services that enable product teams to build AI-powered experiences.
  • Prototype emerging AI techniques and translate successful experiments into production-ready platform capabilities.
  • Debug production failures and improve latency, reliability, observability, and operational performance.
  • Stay current with advances in AI engineering, foundation models, and applied machine learning, applying them where they create customer value.
  • Optimize AI systems for performance, latency, reliability, scalability, and cost.
  • Contribute to a collaborative engineering culture focused on ownership and continuous learning.

Desired Qualifications

  • Experience building reusable AI capabilities or shared AI services.
  • Familiarity with deploying, optimizing, or serving open-source foundation models.
  • Knowledge of evaluation frameworks, benchmarks, or datasets for AI applications.
  • Experience with Kubernetes, cloud-native infrastructure, or distributed systems.
  • Experience developing production software in Rust.
  • Familiarity with retrieval-augmented generation, multimodal AI, AI agents, or model orchestration.
  • Domain expertise building complex AI systems such as multimodal reasoning, long-running inference workflows, AI agents, or model orchestration.

About the Company

Legion Intelligence

Secure, sovereign AI platform for enterprise

Legion Intelligence offers an enterprise and government–grade AI platform that keeps client data in its own environment to unlock data, automate tasks, and improve decision-making. The platform uses a modular architecture and integrates with existing systems to accelerate value while ensuring data sovereignty and preventing data from being used to train external models. It supports mission-critical teams with strict permissions, access controls, and optimized compute, including deployments for classified use cases. The goal is to modernize enterprise knowledge and workflows by delivering a secure, integrated AI platform that enables AI adoption while meeting stringent security requirements.

Company size
51-200
Company stage
Not listed
Total funding
Not listed
Headquarters
San Francisco, CA
Founded
2022

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