Senior AI Foundations & LLM Systems Engineer
MFS Investments
Cambridge, MA · Posted November 3, 2026
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Where Cambridge, MA ranks
Where Cambridge, MA placed in our monthly rankings, month by month. Each month stays online at its own address.
November 2026
- #1Best cities for healthcare pay after cost of living$180k · of 24
- #1Best cities for director and executive jobs53% · of 100
- #1Best cities for director and executive jobs in the Northeast53% · of 70
- #1Best cities for director and executive jobs in New England53% · of 28
- #2Best cities for life sciences and biotech jobs579 openings · of 41
- #2Cities with the most jobs that do not need a four-year degree in New England59 jobs · of 14
Rankings about data & analytics jobs
- Best cities for data and analytics jobs #1 New York (1,713 openings)
- Best cities for data and analytics pay after cost of living #1 Foster ($232k)
- Most requested AI skills in data and analytics jobs #1 Machine learning engineering (17.1%)
- AI tools named most often in data and analytics jobs #1 Databricks (7.6%)
- Employers with the most data and analytics jobs #1 Amazon (711 roles)
Data & Analytics jobs · Top Data & Analytics employers · All rankings
How AI is used in this kind of work
Among computer and information research scientists, AI is already used for a large share of the tasks. Measured exposure for computer and information research scientists: 34% (high).
Share of this job’s tasks that AI is already used for at work, from real usage. It is not a forecast of job loss, and a low number means no use seen yet. Source: Anthropic Economic Index.
About the job
...Capital One is seeking an AI Engineer 4 to help build AI foundations, LLM cores, and agentic workflows that scale across the enterprise. You will design, train, and deploy AI components, optimize model performance, and ensure governance and observability for reliable...