LexisNexis

Senior Machine Learning Engineer III

LexisNexis
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17 hours ago
Remote, United StatesSenior
H1B sponsor

Base Salary

$118k - $220k/yr

Responsibilities

  • Architect and implement scalable ML and LLM systems in production.
  • Build and deploy LLM applications, including RAG pipelines and agentic systems.
  • Implement hybrid semantic and lexical search using embeddings and search platforms.
  • Develop APIs, microservices, data pipelines, streaming systems, and model-serving infrastructure.
  • Create reusable AI/ML frameworks, libraries, and infrastructure across teams.
  • Optimize systems for latency, scalability, reliability, and cost efficiency.
  • Establish deployment, monitoring, observability, and CI/CD best practices.
  • Partner with Data Scientists to productionize models and integrate them into products.
  • Provide technical leadership in system design, debugging, optimization, and engineering standards.

Requirements

  • Bachelor’s degree in Computer Science, Engineering, or a related field.
  • Strong experience implementing and scaling production ML and LLM systems.
  • Deep experience developing LLM applications with RAG and prompt orchestration.
  • Strong experience designing production agentic systems with frameworks such as LangChain, LangGraph, AutoGen, or Google ADK.
  • Strong experience with hybrid search, embeddings, and search platforms such as Solr or OpenSearch.
  • Expertise in distributed systems and cloud-native development, including AWS, S3, and DynamoDB.
  • Experience with Kafka or SQS, Redis, scalable REST or GraphQL APIs, Docker, and Kubernetes.
  • Proficiency in Python and experience with Rust, Go, or Scala.
  • Strong software engineering fundamentals, including system design, testing, and CI/CD.
  • Preferred experience with ChatGPT/OpenAI, Claude, Gemini, LangChain, Google ADK, Terraform, CloudFormation, Jenkins, Spark, Hadoop, Dgraph, Neo4j, or Neptune.
  • Experience with high-availability and low-latency systems and familiarity with legal or regulatory domains are preferred.

Benefits

  • U.S. national base pay range is $118,300–$219,800, with geographic differentials potentially applying; compensation figures are excluded from benefit details.
  • Eligible for an annual incentive bonus.
  • Country-specific benefits are available.
  • The employer provides an accessible hiring process and disability accommodations.

Tech Stack

Amazon DynamoDBApache HadoopApache KafkaApache SparkAWSDockerGoGraphQLJenkinsKubernetesNeo4jPythonRedisRustScalaTerraform
LexisNexis

About LexisNexis

5,001-10,000 employees

LexisNexis builds research, content, and workflow software for legal, regulatory, and business professionals, including the Lexis+ platform and AI‑assisted drafting and analytics tools. It sells subscriptions and licenses to primary law, news, and practical guidance, plus SaaS products for litigation, compliance, and practice management used by law firms, corporate legal, governments, and universities. Founded in 1970 and headquartered in New York City, it is part of RELX and serves customers in 150+ countries.

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