About the Role We are looking for a Junior AI/ML Engineer to join our team building production AI systems for an advanced, agentic travel-support chatbot. You will work with experienced ML and software engineers on open-…
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San Francisco, California, United States · On-site
Senior+$2.2B raised
About the Role Meetings & Events for Navan Group is at a pivot point. We are evolving from siloed organizations into a unified, global "Meetings & Events" powerhouse. Our Operations need to build for the new future, wher…
About the Role Meetings & Events for Navan Group is at a pivot point. We are evolving from siloed organizations into a unified, global "Meetings & Events" powerhouse. Our Operations need to build for the new future, wher…
About the Role Meetings & Events for Navan Group is at a pivot point. We are evolving from siloed organizations into a unified, global "Meetings & Events" powerhouse. Our Operations need to build for the new future, wher…
Skills: Travel operations management, Global team leadership, Commercial ownership, Budget management, Gross margin analysis
About the Role Meetings & Events for Navan Group is at a pivot point. We are evolving from siloed organizations into a unified, global "Meetings & Events" powerhouse. Our Operations need to build for the new future, wher…
Skills: Travel operations management, Global team leadership, Commercial ownership, Budget management, Gross margin analysis
Senior Manager, Business Operations, Specialty Travel & Events
Boston, Massachusetts, United States · On-site
$81k–$180k/yr
Senior$2.2B raised
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Skills: Business Operations, Strategic Planning, Project Management, Data Analysis, SQL
Senior Manager, Business Operations, Specialty Travel & Events
New York, New York, United States · On-site
$81k–$180k/yr
Senior+$2.2B raised
About the Role The Specialty Travel & Events Business Operations team is built to solve our organization's most critical, emergent challenges across business, product, and operations. As a Senior Manager, you will have t…
Skills: Business Operations, Strategic Planning, Data Analysis, SQL, Excel
The Associate Account Manager role is a new and developing function at Navan within the wider Account Management department. Associate Account Managers work alongside Account Managers to provide support to our Travel and…
The Associate Account Manager role is a new and developing function at Navan within the wider Account Management department. Associate Account Managers work alongside Account Managers to provide support to our Travel and…
The Associate Account Manager role is a new and developing function at Navan within the wider Account Management department. Associate Account Managers work alongside Account Managers to provide support to our Travel and…
Manager, Business Operations, Specialty Travel & Events
London, England, United Kingdom · On-site
Senior$2.2B raised
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Skills: Business Operations, Program Management, Technical Project Management, SQL, Data Analysis
About the Role Meetings & Events for Navan Group is at a pivot point. We are evolving from siloed organizations into a unified, global "Meetings & Events" powerhouse. Our Operations need to build for the new future, wher…
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Navan Expense is an expense and corporate card solution that eliminates the hassles of expense management while giving finance leaders real-time spend visibility and control. Navan Expense provides employees with a refre…
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San Francisco, California, United States · On-site
$105k–$180k/yr
Mid level$2.2B raised
Navan Expense is an expense and corporate card solution that eliminates the hassles of expense management while giving finance leaders real-time spend visibility and control. Navan Expense provides employees with a refre…
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Skills: Sales, Prospecting, Lead Nurturing, Salesforce, Data Analysis
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Full-time
bachelor degree
Posted 15h ago
~40 hrs/week
Responsibilities
You will prepare datasets and support supervised fine-tuning experiments for language models and classifiers. Additionally, you will integrate self-hosted models into agentic workflows and monitor their performance in production environments.
Requirements
Candidates should have a degree or practical project experience in Computer Science, Machine Learning, or a related field. Proficiency in Python and a solid understanding of machine learning and LLM concepts are required.
Full job description
About the Role
We are looking for a Junior AI/ML Engineer to join our team building production AI systems for an advanced, agentic travel-support chatbot.
You will work with experienced ML and software engineers on open-source language models, fine-tuning, model evaluation, inference, and production integrations. This role offers hands-on exposure to the full AI lifecycle: preparing data, training models, evaluating quality, deploying experiments, and monitoring real-world performance.
What You'll Do
Prepare, clean, and analyze datasets from production conversations and synthetic examples.
Support supervised fine-tuning experiments for language models and classifiers.
Experiment with techniques such as SFT, LoRA, and QLoRA.
Compare base and fine-tuned models using offline evaluations and production shadow traffic.
Evaluate model quality, including accuracy, routing, tool calling, hallucinations, and reliability.
Integrate self-hosted models into agentic workflows and LLM-powered services.
Help configure and test models using platforms such as SageMaker, vLLM, Impala, and Baseten.
Analyze latency, throughput, token usage, failures, and cost.
Build monitoring, logging, and evaluation tools for model experiments.
Write tests for model integrations, routing, fallbacks, and shadow deployments.
Debug issues across data pipelines, model endpoints, backend services, and agent workflows.
Document experiments, datasets, model versions, and results.
What We're Looking For
Degree, coursework, internship, or practical project experience in Computer Science, Machine Learning, Data Science, or a related field.
Programming experience in Python, JavaScript, or TypeScript.
Basic understanding of machine learning concepts, including training data, validation data, overfitting, and evaluation.
Basic understanding of LLM concepts such as prompts, tokens, context windows, structured outputs, and tool calling.
Familiarity with REST APIs, JSON, Git, and testing.
Strong problem-solving and debugging skills.
Ability to analyze data and investigate model-quality issues.
Curiosity about open-source models, fine-tuning, and production AI systems.
Nice to Have
Experience with PyTorch or Hugging Face.
Hands-on experience with SFT, LoRA, QLoRA, embeddings, RAG, or text classification.
Experience preparing conversational datasets or synthetic training data.
Familiarity with Docker, AWS, SageMaker, vLLM, or GPU-based inference.
Experience with Jest, Grafana, New Relic, or other observability tools.
Familiarity with Node.js, React, Redis, or asynchronous programming.
Ideal Candidate
You are an early-career engineer who combines solid software fundamentals with a strong interest in AI. You enjoy experimenting, measuring results, and understanding why models succeed or fail. You are eager to learn, comfortable working across data and code, and excited to help turn research ideas and model experiments into reliable production capabilities.
Navan is the global AI-powered business travel and expense platform that makes travel easy for frequent travelers. From finding flights and hotels, to automating expense reconciliation, with 24/7 support along the way, Navan delivers an intuitive experience travelers love and finance teams rely on. See how Navan customers benefit and learn more at navan.com.
Offices: 3045 Park Blvd, Palo Alto, California 94306, US · 181 Fremont St, San Francisco, California 94105, US · 115 W 18th St, 6th Floor, New York, NY 10011, US · 3401 Olympus Blvd, Suite 525, Dallas, Texas 75019, US · 81–87 High Holborn, 6th Floor, London, England WC1V 6DF, GB
Navan is the global AI-powered business travel and expense platform that makes travel easy for frequent travelers. From finding flights and hotels, to automating expense reconciliation, with 24/7 support along the way, Navan delivers an intuitive experience travelers love and finance teams rely on. See how Navan customers benefit and learn more at navan.com.
Offices: 3045 Park Blvd, Palo Alto, California 94306, US · 181 Fremont St, San Francisco, California 94105, US · 115 W 18th St, 6th Floor, New York, NY 10011, US · 3401 Olympus Blvd, Suite 525, Dallas, Texas 75019, US · 81–87 High Holborn, 6th Floor, London, England WC1V 6DF, GB