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We are Lennar
Lennar is one of the nation's leading homebuilders, dedicated to making an impact and creating an extraordinary experience for their Homeowners, Communities, and Associates by building quality homes and providing exceptional customer service, giving back to the communities in which we work and live in, and fostering a culture of opportunity and growth for our Associates throughout their career. Lennar has been recognized as a Fortune 500® company and consistently ranked among the top homebuilders in the United States.
Join a Company that Empowers you to Build your Future
The Lead Software Engineer reports to the Engineering Manager. You will lead the design, development, and evolution of enterprise-grade AI solutions and MCP servers. This role requires a hands-on leader to deliver scalable, secure, and business-aligned AI infrastructure on AWS.

• A career with purpose.
• A career built on making dreams come true.
• A career built on building zero defect homes, cost management, and adherence to schedules.

Your Responsibilities on the Team

• Lead the adoption of ServiceNow and AWS-native AI capabilities.
• Identify opportunities where AI reduces manual effort and improves service outcomes.
• Design a repeatable, domain-aligned pattern as a Spotify Backstage Software Template.
• Architect production-ready MCP servers with integrated authentication and RBAC.
• Develop reference Python MCP servers for enterprise domains like Workday.
• Implement shared authentication libraries for Entra ID and OAuth flows.
• Build a tool-accuracy eval harness to validate LLM tool behavior in CI.
• Automate registration with AWS Bedrock AgentCore Gateway.
• Manage container deployment on AWS ECS Fargate using read-only filesystems.
• Deploy infrastructure-as-code using Terraform or CloudFormation.
• Instrument observability using OpenTelemetry tracing and structured JSON logging.
• Conduct technical design reviews and architecture governance.
• Transfer knowledge to the platform team through live sessions and documentation.

Requirements

• Python Mastery: 7+ years of production Python using async frameworks like FastAPI or Starlette.
• AWS Infrastructure: Deep knowledge of IAM role chaining, Secrets Manager, ECR, and VPC networking.
• AI & Agentic Systems: Hands-on experience with Model Context Protocol (MCP) and AWS Bedrock AgentCore.
• Identity & Security: Advanced OAuth 2.0/OIDC execution, including On-Behalf-Of flows and JWT validation.
• Platform Engineering: Experience authoring Spotify Backstage templates and GitHub Actions CI/CD pipelines.
• Enterprise Integration: Proven history of integrating complex REST APIs such as Workday, Salesforce, or ServiceNow.

Education and Experience Requirements

• Experience: 8+ years of overall IT experience.
• Specialization: 6+ years of hands-on architecture and development experience.
• Leadership: Demonstrated ability to lead complex, enterprise-scale implementations.
• Communication: Excellent technical writing skills for runbooks and architecture docs.

Physical & Office/Site Presence Requirements:

• Operate computer equipment and remain in a primarily sedentary position.
• Lift and carry up to 25 lbs.
• Finger dexterity is necessary.
• Location: Remote US / Onsite / Hybrid.

This description outlines the basic responsibilities and requirements for the position noted. This is not a comprehensive listing of all job duties of the Associates. Duties, responsibilities and activities may change at any time with or without notice.
During the course of your employment, you may be required to use, download, or access certain Company-approved tools, programs, applications, or systems. These resources may include, but are not limited to, applications designed for customer engagement, operational efficiency, data analysis, Artificial Intelligence (AI) tools, and other business functions.
Life at Lennar
At Lennar, we are committed to fostering a supportive and enriching environment for our Associates, offering a comprehensive array of benefits designed to enhance their well-being and professional growth. Our Associates have access to robust health insurance plans, including Medical, Dental, and Vision coverage, ensuring their health needs are well taken care of. Our 401(k) Retirement Plan, complete with a $1 for $1 Company Match up to 5%, helps secure their financial future, while Paid Parental Leave and an Associate Assistance Plan provide essential support during life's critical moments. To further support our Associates, we provide an Education Assistance Program and up to $30,000 in Adoption Assistance, underscoring our commitment to their diverse needs and aspirations. From the moment of hire, they can enjoy up to three weeks of vacation annually, alongside generous Holiday, Sick Leave, and Personal Day policies. Additionally, we offer a New Hire Referral Bonus Program, significant Home Purchase Discounts, and unique opportunities such as the Everyone's Included Day. At Lennar, we believe in investing in our Associates, empowering them to thrive both personally and professionally. Lennar Associates will have access to these benefits as outlined by Lennar's policies and applicable plan terms. Visit Lennartotalrewards.com to view our suite of benefits.
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Lennar is an equal opportunity employer and complies with all applicable federal, state, and local fair employment practices laws.