Senior Data Engineer

Senior Data Engineer

Full-time – Remote (United States)

As a Senior Data Engineer at The Guestbook, you'll design and scale the data and AI systems that power our platform's intelligence layer — from rewards personalization to automated insights for hotel partners. You'll build reliable data pipelines while helping shape the next generation of AI-powered travel experiences using large language models (LLMs) and generative AI.

We're a small, agile team that values creativity, curiosity, and shipping impactful work fast. You'll have the opportunity to own your projects end-to-end — from designing data systems to integrating AI-driven solutions into our production environment.

If you're excited about applying machine learning and generative AI to real-world hospitality and e-commerce challenges, this is the ideal role for you.

What You'll Be Doing

• Design, build, and maintain data pipelines that support analytics, machine learning, and AI-driven product features.
• Collaborate across Product, Marketing, and Engineering to identify opportunities to apply generative AI and predictive models to business problems.

• Develop and deploy LLM-based applications, such as:

• Intelligent data summarization and report generation

• Personalized travel recommendations and deals
• Automated guest communications and support

• Content generation tools

• Fine-tune and evaluate models using internal and open datasets (e.g., OpenAI, Hugging Face, Anthropic, Vertex AI, or similar platforms).

• Build data systems and APIs that make LLM outputs reliable, auditable, and scalable.
• Partner with the team to ensure data governance, privacy, and model performance are maintained at high standards.
• Stay current on emerging tools and frameworks in AI engineering, vector databases, prompt optimization, and model monitoring.

What You'll Bring to The Guestbook

• 3+ years of professional experience as a data engineer, ML engineer, or related software role.
• Degree in Computer Science, Data Science, Artificial Intelligence, or a related field — or equivalent practical experience.
• Strong proficiency in Python, SQL, and modern ETL/ELT frameworks (dbt, Dagster, Airflow, Fivetran).
• Deep understanding of cloud infrastructure (AWS, GCP, or Azure) and data warehousing (BigQuery, Snowflake, or Redshift).
• Demonstrated experience working with machine learning models and LLMs, including fine-tuning, API integration, and prompt design.
• Familiarity with vector databases (Pinecone, Weaviate, FAISS) and embedding-based retrieval techniques.
• Strong communication skills and the ability to translate AI capabilities into business value.

Nice to Haves

• Experience building AI-powered applications using frameworks like LangChain, LlamaIndex, or OpenAI's function-calling APIs.
• Knowledge of retrieval-augmented generation (RAG) systems and semantic search architecture.
• Experience deploying ML and LLM pipelines in production (Vertex AI, AWS SageMaker, or similar).
• Familiarity with front-end frameworks (React, ) for integrating AI features into web products.
• Contributions to open-source AI or data engineering projects.
• Background in hospitality, travel tech, or e-commerce data systems.

Benefits

The Guestbook offers a comprehensive benefits package designed to support your well-being and future growth:

• 20 PTO days annually (and we encourage you to use them)
• Health & Welfare Benefits (Medical/Rx, Dental, Vision)
• Flexible Spending Accounts
• Short- and Long-Term Disability Insurance
• Life & Accident Insurance
• 401(k) Retirement Savings Plan

Applicants must be authorized to work for any employer in the U.S. We are unable to sponsor or assume visa sponsorship at this time.