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Sr Software Engineer, AI & Architecture

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.

A Career that Empowers You to Build Your Future

We are seeking a talented Sr Software Engineer to join our team. This role involves designing, developing, testing, and deploying software applications. You will collaborate with cross-functional teams to understand business requirements and translate them into technical solutions.

Your Responsibilities on the Team

Software Development:

• Design, develop, and maintain full-stack applications, ensuring scalability, performance, and security.
• Write clean, maintainable, and efficient code, following best practices and coding standards.
• Work on both the front-end (using frameworks such as React, Angular, or Vue.js) and back-end (using technologies such as Node.js, Python, or .NET).

Architecture and Design:

• Contribute to the architecture and design of software systems, ensuring alignment with business goals and technical strategy.
• Participate in technical design reviews, providing feedback and recommendations to improve system design and code quality.
• Collaborate with DevOps and platform teams to integrate applications into CI/CD pipelines and automate deployment processes.

Testing and Quality Assurance:

• Develop and execute unit tests, integration tests, and automated tests to ensure software quality.
• Identify and resolve defects and performance issues, conducting thorough code reviews to maintain high standards of code quality.
• Work closely with QA teams to implement and improve testing strategies and processes.

Collaboration and Teamwork:

• Collaborate with product managers, designers, and other engineers to deliver high-quality features and enhancements.
• Participate in agile ceremonies such as sprint planning, stand-ups, and retrospectives, contributing to the continuous improvement of the team's processes.
• Communicate effectively with both technical and non-technical stakeholders, providing updates on progress and potential challenges.

Mentorship and Leadership:

• Mentor and guide junior engineers, sharing knowledge and best practices to help them grow in their roles.
• Lead by example, demonstrating a strong work ethic, a commitment to quality, and a proactive approach to problem-solving.
• Take ownership of features or projects, driving them from concept to completion with minimal supervision.

Continuous Improvement and Innovation:

• Stay up-to-date with industry trends, emerging technologies, and best practices, and bring new ideas to the team.
• Identify opportunities for process improvements, refactoring, or technical enhancements to optimize the software development lifecycle.
• Participate in technical discussions and contribute to the evolution of the team's technical direction.

Requirements

Education: Bachelor's degree in Computer Science, Engineering, or a related field (or equivalent experience).

Experience:

• Minimum of 5-7 years of experience in software development, with a strong focus on full-stack development.
• Proven experience working in agile environments, with the ability to adapt to changing requirements and priorities.
• Ideally have worked in IT Governance & Trust/Compliance business domain
• Ideally familiarity with; NIST AI RMF, OWASP, ISO/IEC,SOX, AIBOM

Technical Skills:

• Proven experience in web development including working with Headless CMS systems, Digital Asset Management systems and front end development
• Proficiency in modern front-end frameworks (e.g., React, Angular, Vue.js) and back-end technologies (e.g., Node.js, Python, .NET).
• Strong understanding of RESTful APIs, microservices architecture, and database design (SQL and NoSQL).
• Experience with cloud platforms (e.g., AWS, Azure, Google Cloud) and containerization tools (e.g., Docker, Kubernetes).
• Familiarity with CI/CD pipelines, version control (e.g., Git), and DevOps practices.

AI & Agent Development:

• Expert-level experience designing and implementing multi-agent systems with complex A2A communication patterns and orchestration
• Deep expertise in agentic AI architecture, including autonomous decision-making, goal-oriented behavior, and agent reasoning frameworks
• Hands-on experience with enterprise AI platforms such as AWS Bedrock-Agentcore, Azure OpenAI Service, Anthropic's, products, API, and Claude-series models, or similar enterprise-AI services
• Proficiency with AI orchestration frameworks and tools (e.g., LangChain, LlamaIndex, AutoGen, CrewAI, or similar)
• Strong experience implementing tool/function calling, external system integrations, and protocol-based agent communication (e.g., Model Context Protocol)
• Proven ability to integrate AI agents with enterprise systems, APIs, and data sources to enable autonomous workflows
• Hands-on experience with LLM integration, prompt engineering, and managing context windows in production environments
• Experience implementing agent observability, (either AWS-native or 3PP), monitoring, and debugging solutions for production AI systems
• Strong understanding of RAG (Retrieval-Augmented Generation) architectures and vector databases
• Knowledge of AI safety practices, including guardrails, content filtering, and responsible AI deployment

Soft Skills:

• Excellent problem-solving skills, with a detail-oriented approach and a strong sense of ownership.
• Effective communication skills, with the ability to work well in a collaborative team environment.
• A proactive attitude, with a willingness to take initiative and drive projects forward.

Attributes:

• Passionate about technology and software development, with a continuous desire to learn and improve.
• Self-motivated, organized, and capable of managing multiple tasks and projects simultaneously.
• High level of integrity, accountability, and a commitment to delivering high-quality software solutions.

• This information is intended to be a general overview and may be modified by the company due to factors affecting the business.

General Overview of Compensation & Benefits:

We reasonably expect the base compensation offered for this position to range from an annual salary of $107,400.00 - $134,200, subject to adjustment based on business-related factors such as employee qualifications, geographic pay differentials (e.g., cost of labor/living, etc.), and operational considerations.

• This position may be eligible for bonuses.
• This position may be eligible for commissions.
• This position will be eligible for the described benefits listed in the above section in accordance with Company Policy.
• This information is intended to be a general overview and may be modified by the Company due to factors affecting the business.

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.

Join the fun and follow us on social media to see what's happening at our company, and don't forget to connect with us on Lennar: Overview | LinkedIn for the latest job opportunities.

Lennar is an equal opportunity employer and complies with all applicable federal, state, and local fair employment practices laws.