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About the Role
As an ML Engineer, you will build and own the intelligence layer at the core of our product: models, pipelines, and agent systems that allow Linero to reason over complex, sensitive enterprise data, entirely within controlled, private environments. This is a production-focused, high-stakes role. You are building systems that real enterprise customers depend on, operating under some of the most demanding security and accuracy requirements in the industry.
Responsibilities
- Design and own Linero's AI architecture, selecting, fine-tuning, and deploying the right models for each use case within controlled, private environments
- Build and maintain RAG pipelines that allow models to reason over sensitive, proprietary enterprise data without exposing it to public APIs
- Fine-tune foundation models on domain-specific data to achieve the classification accuracy and reliability our customers require
- Design and orchestrate a fleet of specialized AI agents, including agents that process and tag internal enterprise documents and agents that monitor and analyze external data sources
- Build evaluation frameworks, benchmarks, and observability tooling to ensure model reliability, accuracy, and auditability in production
- Own the private inference infrastructure, ensuring all AI runs in controlled environments that meet the security posture of our most demanding customers
- Work closely with platform and infrastructure teams to ensure AI systems are integrated securely and can scale across the product
Requirements
- 4+ years of experience in AI/ML engineering with a strong emphasis on production systems
- Deep experience fine-tuning and evaluating large language models for domain-specific applications
- Strong experience building RAG systems, retrieval architecture, chunking strategies, embedding models, and evaluation
- Experience designing and deploying multi-agent systems: orchestration, tool use, failure modes, and observability
- Hands-on experience fine-tuning (LoRA/QLoRA, full fine-tuning) and serving open-weight models locally, with a deep understanding of optimizing inference latency, throughput, and memory constraints in air-gapped or restricted infrastructure without relying on external APIs.
- Strong software engineering fundamentals; you build and ship production systems, not just proofs of concept
- Experience with information extraction, document classification, or NLP at scale is a strong plus
- Applicants must be U.S. persons (citizens, lawful permanent residents, refugees, or asylees) as defined under applicable U.S. law.
Skills
- AI/ML engineering
- Production systems
- Fine-tuning large language models
- Evaluating large language models
- RAG systems
- Retrieval architecture
- Chunking strategies
- Embedding models
- Multi-agent systems
- Orchestration
- Tool use
- Failure modes
- Observability
- Open-Weight Model Adaptation
- LoRA/QLoRA
- Full fine-tuning
- Serving open-weight models locally
- Optimizing inference latency
- Optimizing throughput
- Optimizing memory constraints
- Air-gapped infrastructure
- Restricted infrastructure
- Software engineering fundamentals
- Information extraction
- Document classification
- NLP at scale
Location
- New York City
- Remote
Work Type
- Remote
Experience Level
- 4+ years of experience in AI/ML engineering
Benefits
- Competitive compensation commensurate with experience
- Meaningful equity in a company at an early and critical stage of growth
- Comprehensive benefits including health, dental, and vision
- The opportunity to build proprietary AI at the frontier of national security infrastructure
- Direct access to leadership and genuine influence over how Linero is built
- Relocation assistance on a case-by-case basis
About the Company
- Linero is building the operational infrastructure that ensures the world's most sensitive technologies reach the right hands, and never the wrong ones.
- Our customers include some of the most consequential companies in the world: leading AI labs, aerospace and defense primes, semiconductor giants, quantum computing pioneers, and companies pushing the frontier in chemicals, advanced manufacturing, and robotics.
- We are an AI-native, venture-backed company creating a new category of software at the intersection of national security, industrial infrastructure, and enterprise AI.
Equal Opportunity
- Linero is an equal opportunity employer. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.
- This role requires access to export-controlled information, as a result, applicants must be U.S. persons (citizens, lawful permanent residents, refugees, or asylees) as defined under applicable U.S. law.