Senior RUST Developer / Senior Software Engineer - Platform (Remote US)

The role

You will design and develop core infrastructure and frameworks for Legion's Agentic AI platform. You will work with cross-functional and machine learning teams, and provide production support.

What you will do

• Design and develop foundational components and frameworks for the Agentic AI platform
• Collaborate with cross-functional teams to create platform solutions that let developers build applications on top of it
• Keep current with design patterns, techniques and technologies for developer platforms and frameworks
• Work closely with machine learning engineers to build infrastructure for ML workflows in enterprises
• Provide production support and troubleshooting, including performance and scalability challenges

Required qualifications

• US Citizenship or Greencard is required due to US Government contract requirements
• Bachelor's degree in Computer Science, Software Engineering, or a related field, or equivalent experience
• 5–8+ years of software and platform engineering experience, with large-scale distributed systems
• Experience building platform infrastructure and backend systems that serve multiple products and engineering teams
• Experience in Rust, with expertise in designing and developing high-performance systems
• Expertise in database architecture and scalable data systems, including distributed databases, storage and indexing, data modeling, and low-latency data access
• Experience designing systems that support AI and machine learning workloads
• Familiarity with workflow engines, execution runtimes, and AI orchestration frameworks
• Growth mindset and low ego, eager to learn new tools and change course when right
• Drive to foster collaboration, psychological safety, and technical excellence

Nice to have

• Start-up experience or comfort in 0→1 product environments
• Familiarity with Kubernetes
• Understanding of DevOps practices and CI/CD pipelines for platform deployment

Before you apply

• US citizenship or green card is required due to US Government contract requirements

About the company

Legion builds secure, reliable AI systems born from a Department of Defense partnership. It works with partners such as Palantir, Nvidia, HPE and Oracle.