Senior ML Ops Engineer

Remitly; Philadelphia (Philadelphia County); On-site; USD 95,000 - 159,000; Full time

Job summary

Elsevier is seeking a Senior Machine Learning Engineer to bridge Data Science and Engineering, turning NLP/IR/GenAI experiments into secure, scalable services powering Health platforms such as Clinical Key AI and Sherpath AI. You will own ML workflows across cloud platforms (AWS, Azure), manage pipelines, and implement GAR/RAG components, embeddings, and vector databases.

Collaborate with PMs, data scientists and Responsible AI experts to ship production-ready models while upholding content

Qualifications

• Current experience in ML Engineering and shipping ML or GenAI systems to production.

Responsibilities

• Automate and orchestrate ML workflows across major cloud platforms.
• Maintain and version model registries and artifact stores.
• Develop and manage CI/CD for ML, including data validation and deployment.
• Implement ML Engineering solutions with MLOps platforms.
• Scale end-to-end SageMaker pipelines.
• Design GAR+RAG systems and embeddings workflows.
• Design ML pipelines using Elasticsearch/OpenSearch/Solr and vector databases.
• Build evaluation pipelines with IR and LLM quality metrics.
• Optimize infrastructure costs and monitor performance.
• Stay current with GAI research and apply it to systems.

Skills

ML Engineering

MLOps

Cloud platforms

Python/Java/Scala

NLP/IR/GenAI

Goverance & reproducibility

News skills

Tools

AWS

Azure

Google Cloud

Elasticsearch/OpenSearch/Solr

SageMaker/MLflow/Azure ML

Job description

Are you a collaborative Machine Learning Ops Engineer looking to work for a mission driven global organization?

Are you looking to drive cutting edge products that have a true societal impact?

About the team, this team that powers Elsevier’s Health platforms: Clinical Key AI, Sherpath AI, and AI-driven automated clinical and content workflows. You will bridge Data Science and Engineering to turn experimental NLP/IR/GenAI models into secure, reliable, and scalable services. Our systems operate over one of the world’s largest medical and scholarly landscapes.

About the role, as a Senior Machine Learning Engineer you’ll work on AI-based features (GenAI, Agentic AI, RAG, etc.) search/ranking quality, and knowledge graph aware retrieval while enforcing content rights and editorial confidentiality.

Key Responsibilities

ML & LLM Engineering, Search and Recommendation Engines

• Automate and orchestrate machine learning workflows across major cloud and AI platforms (AWS, Azure, Databricks, and foundation model APIs such as OpenAI).
• Maintain and version model registries and artifact stores to ensure reproducibility and governance.
• Develop and manageCI/CD for ML, including automated data validation, model testing, and deployment.
• Implement ML Engineering solutions using popular MLOps platforms such as AWS SageMaker, MLflow, Azure ML.
• Scale end-end custom Sagemaker pipelines.
• Design and implement the engineering components of GAR+RAG systems (e.g., query interpretation and reflection, chunking, embeddings, hybrid retrieval, semantic search), manageprompt libraries,guardrailsandstructured outputfor LLMs hosted onBedrock/SageMakeror self-hosted.
• Design and implement ML pipelines that utilize Elasticsearch/OpenSearch/Solr, vector DBs, and graph DBs.
• Buildevaluation pipelines: offline IR metrics (NDCG, MAP, MRR), LLM quality metrics (faithfulness, grounding), andA/B testing.
• Optimize infrastructure costs through monitoring, scaling strategies, and efficient resource utilization.
• Stay current with the latest GAI research, NLP and RAG and apply the state-of-the-art in our experiments and systems.

Collaboration

• Partner with Subject‑Matter Experts, Product Managers, Data Scientists and Responsible AI experts to translate business problems into cutting edge data science solutions
• Collaborate and interface with Operations Engineers who deploy and run production infrastructure.

Qualifications

• Current experience in ML Engineering, MLOps platforms, shipping ML or search/GenAI systems to production.
• StrongPython, Java, and/or Scalaexperience will be considered a plus.
• Hands‑on‑experience with major cloud vendor solutions(AWS, Azure and/or Google)
• Experience with Search/vector/graph technologies (e.g., Elasticsearch / OpenSearch / Solr / Neo4j).
• Experience in evaluating LLM models.
• A strong understanding of the Data Science Life Cycle including feature engineering, model training, and evaluation metrics.
• Background in health technology and/or medical contentworkflows is preferred.
• Familiarity with ML frameworks, e.g., PyTorch, TensorFlow, PySpark.
• Experience with large-scale data processing systems, e.g., Spark.
• Experience with statistical analysis, machine learning theory and natural language processing.

Elsevier is a renowned global information analytics company that primarily focuses on providing scientific, technical, and medical (STM) research content, tools, and services. It is one of the largest publishers of academic journals and scholarly literature in the world. Elsevier operates in various domains, including science, technology, medicine, social sciences, and more. They publish a vast number of peer‑reviewed journals covering a wide range of disciplines. These journals act as platforms for researchers and academics to share their findings and contribute to the advancement of knowledge in their respective fields.

U.S. National Base Pay Range: $95,300 - $158,800. Geographic differentials may apply in some locations to better reflect local market rates. If performed in Maryland, the base pay range is $100,100 - $166,800. If performed in New Jersey, the base pay range is $112,574 - $179,826. This job is eligible for an annual incentive bonus.

We are committed to providing a fair and accessible hiring process. If you have a disability or other need that requires accommodation or adjustment, please let us know by completing our Applicant Request Support Form or please contact 1-855-833-5120.

We are an equal opportunity employer: qualified applicants are considered for and treated during employment without regard to race, color, creed, religion, sex, national origin, citizenship status, disability status, protected veteran status, age, marital status, sexual orientation, gender identity, genetic information, or any other characteristic protected by law.