Software Engineer II, Backend

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

We are seeking a highly skilled Backend Software Engineer with expertise in integrating AI solutions to power mobile applications. This role will focus on building scalable backend systems, implementing AI-driven functionalities, and enabling seamless mobile interactions with cutting-edge machine learning models. The ideal candidate is passionate about AI, backend development, and collaborating across teams to deliver innovative solutions.

• 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 

1. Backend Development:

• Design, build, and maintain robust backend systems to support AI-powered mobile applications.
• Develop and expose APIs (RESTful and GraphQL) to integrate AI models and services with mobile apps.
• Optimize backend infrastructure for low-latency, high-performance AI integrations.

2. AI Integration:

• Work with data scientists and machine learning engineers to deploy AI models into production environments.
• Design pipelines for real-time and batch inference of AI models in mobile applications.
• Implement AI-driven features such as recommendation systems, natural language interfaces, and personalization engines.
• Leverage LLMs and generative AI frameworks to power conversational interfaces, content creation, and enhanced user interactions.

3. Cloud & Infrastructure:

• Use cloud platforms (AWS, Azure) to deploy scalable AI and backend services.
• Implement serverless architectures or containerized deployments for efficient AI model serving.
• Manage event-driven architectures and data pipelines to support AI-based workflows.

4. Performance and Reliability:

• Optimize AI model inference for mobile applications, ensuring speed and responsiveness.
• Monitor and maintain the performance of backend services using tools like Prometheus, Grafana, or Datadog.
• Conduct stress testing to ensure scalability and reliability under varying workloads.

5. Collaboration & Communication:

• Partner with mobile engineers to design and integrate APIs tailored for AI-driven mobile features.
• Collaborate with data engineers to ensure smooth data flow for training and inference.
• Work with product managers and UX/UI designers to align AI capabilities with user needs and product goals.

Requirements

• Bachelor’s degree in Computer Science, Software Engineering, or a related field (or equivalent experience).
• 3+ years of experience in backend development with a strong focus on AI integration.
• Proven experience deploying machine learning models into production environments.

Technical Skills:

• Proficiency in backend languages like Python, Node.js, Go, or Java.
• Experience with AI frameworks such as TensorFlow, PyTorch, or Scikit-learn.
• Familiarity with LLMs and APIs like OpenAI, Hugging Face, or Anthropic.
• Knowledge of API development (RESTful and GraphQL) and backend middleware frameworks.
• Expertise in containerization and orchestration using Docker and Kubernetes.
• Strong understanding of cloud platforms (AWS SageMaker, or Azure ML) and serverless architectures.

AI & Data Skills:

• Experience integrating real-time and batch inference pipelines.
• Familiarity with data processing tools like Kafka, Spark, or AWS Lambda.
• Knowledge of vector databases (e.g., Pinecone, Weaviate) for embedding-based AI tasks.

Soft Skills:

• Strong problem-solving skills with a proactive and innovative mindset.
• Excellent communication and collaboration skills to work with cross-functional teams.
• Passion for learning and implementing state-of-the-art AI technologies.

Preferred Qualifications:

• Experience with AI-powered conversational interfaces or generative AI solutions.
• Background in deploying LLMs for mobile-specific use cases like chatbots or personalized content.
• Familiarity with edge AI deployment for on-device processing in mobile applications.

Physical & Office/Site Presence Requirements

This is primarily a sedentary office position which requires the incumbent to have the ability to operate computer equipment, speak, hear, bend, stoop, reach, lift, and move and carry up to 25 lbs. Finger dexterity is necessary.

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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.