Sr. AI Engineer - Virtual

About Alight

At Alight, we believe a company’s success starts with its people. We champion people, grow with purpose, and encourage colleagues to “Be Alight.” We help clients gain a benefits advantage while building a healthy, financially secure workforce by unifying the benefits ecosystem across health, wealth, wellbeing, absence management and navigation.

As a senior AI/ML engineer, you will design, develop, and deploy machine learning models and AI applications that solve complex business problems.

• Design, build, and maintain AI‑powered search, summarization, and chat applications for our internal platform.
• Build or integrate agentic AI systems such as multi‑step reasoning, tool‑calling, or autonomous workflows.
• Implement information‑retrieval solutions, including vector‑based search, relevance ranking, and retrieval‑augmented generation (RAG).
• Develop production‑ready AI applications in Python, integrating with AWS services.
• Build and tune Open Search / Elasticsearch indexes to support semantic and keyword search use cases.
• Evaluate, tune, and refine AI models and system performance through experimentation.
• Partner with product and business stakeholders to translate requirements into scalable technical solutions.

• 5+ years of overall IT or software engineering experience, including at least 2 years of recent experience working with AI or ML solutions.
• Proven proficiency in Python.
• Experience with AWS services (e.g., Lambda, Sage Maker, Glue, S3).
• Hands‑on experience with Open Search and/or Elasticsearch.
• Familiarity with vector databases and vector search techniques (embeddings, similarity search).

We offer programs and plans for a healthy mind, body, wallet and life, including health coverage options, wellbeing and support programs, retirement plans, vacation and sick leave, maternity, paternity & adoption leave, continuing education and training, and several voluntary benefit options.

Alight is an Equal Employment Opportunity employer and does not discriminate on any protected characteristic. We provide reasonable accommodations for individuals with disabilities and commit to fostering an inclusive environment. For accommodations or other requests, contact

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