Remote Senior ML Engineer: Production-Ready AI Systems

Legionintel; Northern (KY); Hybrid; USD 170,000 - 200,000; Full time

Job summary

Legion is seeking a Senior Software Engineer, Machine Learning to design, build, and evolve core AI capabilities that power intelligent experiences across our enterprise AI platform. You will integrate modern foundation models into production systems, develop reusable AI capabilities, and continuously improve their quality, reliability, and performance.

You will collaborate with cross-functional teams to deploy scalable AI services and rapidly prototype emerging techniques, ensuring

Qualifications

• 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 with Rust or Python.
• Proven 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.

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 the AI systems that power these capabilities through experimentation, quantitative evaluation, context engineering, and iterative refinement.
• Apply your production software engineering experience to build backend services, APIs, and distributed AI systems.
• Partner closely with cross-functional partners to deploy scalable AI services that enable product teams to rapidly build AI-powered experiences.
• Rapidly prototype emerging AI techniques and translate successful experiments into production-ready platform capabilities.
• Support production systems by debugging failures and continuously improving latency, reliability, observability, and operational performance.
• Stay current with advances in AI engineering, foundation models, and applied machine learning, applying them where they create meaningful customer value.
• Optimize AI systems for performance, latency, reliability, scalability, and cost.
• Contribute to a collaborative engineering culture focused on ownership and continuous learning.

Skills

Rust

Python

Distributed systems

APIs

LLMs integration

Testing & observability

Ownership

Education

Bachelor’s or Master’s in CS/ML or related field

Tools

Kubernetes

Job description

Legion is seeking a Senior Software Engineer, Machine Learning to design, build, and evolve core AI capabilities that power intelligent experiences across our enterprise AI platform. You will integrate modern foundation models into production systems, develop reusable AI capabilities, and continuously improve their quality, reliability, and performance.

You will collaborate with cross-functional teams to deploy scalable AI services and rapidly prototype emerging techniques, ensuring