Sr. AI Engineer - Virtual

Our story

At Alight, we believe a company’s success starts with its people. At our core, we Champion People, help our colleagues Grow with Purpose and true to our name we encourage colleagues to “Be Alight.”

Champion People – be empathetic and help create a place where everyone belongs.

Grow with purpose – Be inspired by our higher calling of improving lives.

Be Alight – act with integrity, be real and empower others.

It’s why we’re so driven to connect passion with purpose. Alight helps clients gain a benefits advantage while building a healthy and financially secure workforce by unifying the benefits ecosystem across health, wealth, wellbeing, absence management and navigation.

With a comprehensive total rewards package, continuing education and training, and tremendous potential with a growing global organization, Alight is the perfect place to put your passion to work.

Join our team if you Champion People, want to Grow with Purpose through acting with integrity and if you embody the meaning of Be Alight.

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As a senior AI/ML engineer, you will be responsible for designing, developing, and deploying 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 AI‑powered search and chat platform
• Hands‑on experience building or integrating 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)

Alight requires all virtual interviews to be conducted on video.

So that you can be your best at work and home, we consider flexible working arrangements wherever possible. Alight has been a leader in the flexible workspace and “Top 100 Company for Remote Jobs” 5 years in a row.

We offer programs and plans for a healthy mind, body, wallet and life because it’s important our benefits care for the whole person. Options include a variety of health coverage options, wellbeing and support programs, retirement, vacation and sick leave, maternity, paternity & adoption leave, continuing education and training as well as several voluntary benefit options.

By applying for a position with Alight, you understand that, should you be made an offer, it will be contingent on your undergoing and successfully completing a background check consistent with Alight’s employment policies. Background checks may include some or all the following based on the nature of the position: SSN/SIN validation, education verification, employment verification, and criminal check, search against global sanctions and government watch lists, credit check, and/or drug test.

You will be notified during the hiring process which checks are required by the position.

We celebrate differences and believe in fostering an environment where everyone feels valued, respected, and supported. We know that diverse teams are stronger, more innovative, and more successful.

At Alight, we welcome and embrace all individuals, regardless of their background, and are dedicated to creating a culture that enables every employee to thrive. Join us in building a brighter, more inclusive future.

As part of this commitment, Alight will ensure that persons with disabilities are…