Senior Software Engineer

JLL empowers you to shape a brighter way. Our people at JLL are shaping the future of real estate for a better world by combining world class services, advisory and technology for our clients. We are committed to hiring the best, most talented people and empowering them to thrive, grow meaningful careers and to find a place where they belong. Whether you’ve got deep experience in commercial real estate, skilled trades or technology, or you’re looking to apply your relevant experience to a new industry, join our team as we help shape a brighter way forward.

About the Role JLL's Citizen AI team builds the AI products that JLL employees use every day, such as JLL GPT. You will join the team in Boston as a hands‑on engineer. You will write production code every day, use AI tools as your main way of working, and ship features that reach many users.

• Build and ship features for Citizen AI products, from design to production and monitoring.
• Build on the JLL AI platform: LLM gateway, shared RAG services and MCP tools.
• Use AI coding tools (Claude Code, Cursor or similar) for design, code, tests and review.
• Work with product and design partners to turn requests into working software.
• Fix defects quickly.
• Improve tests, observability and developer tools.
• Follow the AI ecosystem and bring useful ideas back to the team.

• Production software experience in Python or Type Script/Node.
• Experience building features with LLMs (prompts, RAG or agent workflows).
• Experience with REST APIs, cloud services and CI/CD.
• Daily use of AI coding tools as a core part of your workflow.
• Clear written English. You work well across time zones.

• Experience with the Claude Agent SDK, MCP or LLM observability.
• React experience.

• A global company with serious AI investment, and products used at enterprise scale.
• A small team where your code matters, with a clear path to grow.
• This seat gives the team a second engineer in a US time zone.

This position does not provide visa sponsorship. Candidates must be authorized to work in the United States without sponsorship.

Expected compensation for this position:  –  USD per year Final compensation packages are determined by various considerations including but not limited to candidate qualifications, location, market conditions, and internal considerations.

Location:

On‑site –Boston, MA

• 401(k) plan with matching company contributions
• Comprehensive Medical, Dental & Vision Care
• Paid parental leave at 100% of salary
• Paid Time Off and Company Holidays
• Early access to earned wages through Daily Pay

At JLL, we harness the power of artificial intelligence (AI) to efficiently accelerate meaningful connections between candidates and opportunities. Using AI capabilities, we analyze your application for relevant skills, experiences, and qualifications to generate valuable insights about how your unique profile aligns with the specific requirements of the role you're pursuing.

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