Machine Learning Operations (MLOps) Engineer

Gallatin; El Segundo (CA); On-site; USD 180,000 - 240,000; Full time

Job summary

Gallatin is building systems that move ML models from notebooks to planners in high-security environments. You will own training, deployment, evaluation, and telemetry for production models, including air-gapped or restricted-network contexts.

The team works across retrieval-grounded systems, document extraction, symbol recognition, and LLM agent platforms, with emphasis on reproducibility, CI/CD, and IaC. You'll shape how we ship reliable AI in defense and logistics applications.

Qualifications

• Experience deploying and operating production software in IL5 or IL6 environments, including disconnected or restricted-network deployments.
• Shipped an LLM or ML system to production and maintained it.
• Built evaluation and monitoring for ML systems.

Responsibilities

• Own model training, fine-tuning, and batch inference infrastructure across AWS (SageMaker, EKS) and on-premises GPU hardware.
• Stand up and tune LLM inference serving: vLLM-class stacks, quantization, continuous batching, KV-cache and throughput sizing.
• Build CI/CD for models and pipelines: versioned datasets, a model registry, promotion gates, and rollback that actually works under pressure.
• Own infrastructure as code, containerization, and GitOps deployment across environments ranging from a dev cluster to a disconnected enclave.
• Make reproducibility a hard requirement across all deployments.

Skills

MLOps

Python

Kubernetes

Containerization

AWS SageMaker

EKS

GPU infra

IL5/IL6

Production software

Education

CS/Engineering degree

Tools

Palantir Foundry

PostgreSQL/pgvector

NATS/JetStream

ArgoCD

Job description

About Gallatin

At Gallatin, we are rebuilding logistics infrastructure for the national security missions of the United States and allied partners. We build AI systems that determine how logistics decisions are made — not just how they're executed. From factory to foxhole, we operate at the layer where data becomes decisions, and decisions make the advantage.

What You'll Do

In this role, you will build the systems that move a model out of a notebook and into the hands of a planner. Sometimes, that means deploying to an air-gapped rack in a tent instead of a VPC. You will own the path from training run to deployed capability: the infrastructure it runs on, the release process that ships it, the evaluation harness that proves it works, and the telemetry that tells us when it stops working.

Our AI/ML team works across retrieval-grounded systems for doctrine and logistics data, document and feature extraction, military symbol recognition, optimization and movement models, and an LLM agent platform. This role underpins that work: building the infrastructure, release processes, and evaluation systems that make it shippable and keep it honest in production. You will have plenty of room to shape how we build it.

Training & Serving Infrastructure

• Own model training, fine-tuning, and batch inference infrastructure across AWS (SageMaker, EKS) and on-premises GPU hardware.
• Stand up and tune LLM inference serving: vLLM-class stacks, quantization, continuous batching, KV-cache and throughput sizing. Make the hosted-vs-local call with numbers behind it.
• Build for DDIL: local inference with configurable fallback, degraded-mode behavior, and sane resource envelopes on hardware we do not get to choose.

Release & Reproducibility

• Build CI/CD for models and pipelines: versioned datasets, a model registry, promotion gates, and rollback that actually works under pressure.
• Own infrastructure as code, containerization, and GitOps deployment across environments ranging from a dev cluster to a disconnected enclave.
• Make reproducibility a hard requirement. Any result we put in front of a customer or evaluator must be reproducible from a commit and dataset version.

Evaluation & Observability

• Build and own the evaluation harness: regression suites for retrieval and extraction pipelines, LLM-as-judge pipelines with measured judge-human agreement, and adversarial and held-out sets.
• Instrument production for drift, latency, cost, retrieval quality, and failure modes, including quiet ones such as a retrieval miss that produces a fluent but wrong answer.
• Make our metrics defensible to external test and evaluation reviewers. We think it's good is not a deliverable.

Data & Pipeline Ownership

• Own ingestion, versioning, and lineage for logistics and doctrinal data drawn from a heterogeneous set of authoritative sources.
• Build and operate embedding and feature pipelines, incremental indexing, and the unglamorous systems that keep a retrieval index fresh.
• Build the human-in-the-loop infrastructure: confidence-scored routing, review queues, and feedback capture that improves the next model.

Secure & Accredited Deployment

• Deploy and operate ML systems in IL5 and IL6 environments, including air-gapped or restricted-network enclaves. Build the release, observability, artifact-management, and incident-response workflows those environments require.
• Support ATO and continuous-authorization work with implementation evidence tied to applicable security controls (NIST SP 800-171, NIST SP 800-53 Rev. 5, CMMC Level 2, FIPS 140-3, and RMF/eMASS).
• Handle CUI and classified data correctly without being asked twice.

What We’re Looking For

Strong Platform & Infrastructure Skills

• 5+ years in MLOps, ML platform, or infrastructure engineering, including meaningful time working on systems with real users.
• Strong Python skills and comfort in a production codebase, not just notebooks.
• Deep Kubernetes and containerization experience, plus infrastructure as code.
• Production experience with AWS ML/Azure infrastructure (SageMaker, EKS, or equivalent).
• Hands-on GPU infrastructure experience: scheduling, utilization, memory sizing, and cost.
• Hands-on experience deploying and operating production software in IL5 or IL6 environments, including disconnected or restricted-network deployments.

Production ML Judgment

• You have shipped an LLM or ML system to production and then had to keep it working. You know what breaks.
• You have built evaluation and monitoring for ML systems rather than adopting a vendor dashboard and hoping.
• You can reason about where a pipeline’s quality actually comes from and say so when a metric is measuring the wrong thing.

Ownership

• You are comfortable with ambiguity and owning a domain end to end. This is a small team; there is no one to hand the pager to.
• You are willing to learn the mission domain. The engineers who do best here become genuinely interested in the logistics problem itself.

Nice to Have

• Clearance: Preferred
• LLM serving and inference optimization (vLLM, TensorRT-LLM, quantization, prefix caching).
• Retrieval-grounded systems in production: hybrid retrieval, re-ranking, index freshness, and citation quality.
• Edge, on-premises, or disconnected deployment.
• Experience supporting ATO, continuous authorization, or production operations in classified environments.
• Defense, intelligence, or another accredited or regulated environment.
• Palantir Foundry, PostgreSQL/pgvector, NATS/JetStream, or ArgoCD.
• A degree in CS, engineering, or a related technical field, or the equivalent built the hard way.

Mission and Identity

We are building the system that enables faster, smarter logistics decisions in contested environments, and we're doing it with a team of seasoned entrepreneurs, operators, and technologists who have built and scaled solutions in this space before. We hold ourselves to an extremely high standard. We value clear thinking, direct communication, and the kind of ownership that doesn't stop until something actually works.

Our mission is to create decision advantage when the stakes are the highest. If we succeed, the system doesn't just run; it gets smarter. We're not building AI for its own sake. We're building it because faster, smarter decisions in the most demanding environments on earth can't wait. If you want to work somewhere the stakes are real and the mission is urgent — you'll fit in here.

Why Gallatin?

The logistics infrastructure that supports America's warfighters and humanitarian disaster responders is overdue for transformation, and we are building it. From defense operations to disaster response, we're solving the hardest problems that keep missions moving when it matters most. Join a team where the mission is the point.

Gallatin offers competitive compensation commensurate with experience. Actual compensation may vary based on experience, skills, and location. In addition to base salary, we offer a generous equity grant, full healthcare coverage, 401k, unlimited PTO, and the perks of working in a high-caliber, mission-driven environment.

Gallatin is an equal opportunity employer. We do not discriminate on the basis of race, color, religion, sex, national origin, age, disability, veteran status, sexual orientation, gender identity, or any other characteristic protected by applicable federal, state, or local law.

This position may require the ability to obtain and maintain a U.S. government security clearance. The successful candidate must be able to work in a classified environment when necessary.

We comply with the United States Department of Labor's Pay Transparency provision.

Note: Due to the nature of certain government contracts held by this organization, U.S. citizenship is a requirement for all positions at Gallatin. Proof of citizenship will be required prior to employment if selected.