Senior Java Engineer

ABOUT THE ROLE

In this role, you will help build the next generation of AI-powered shopping experiences for millions of car buyers and sellers. You will help replatform AI services from Java to a modern Python-based architecture and develop conversational and agentic experiences that make vehicle discovery more personalized, transparent, and intuitive. Working closely with cross-functional teams, you will design and deliver scalable, production-ready backend solutions that support AI-driven customer journeys.

RESPONSIBILITIES

• Build and operate backend services and APIs using Java (and Python, FastAPI), and established platform patterns to power AI-driven products
• Contribute to conversational workflows built with LangGraph, including routing, handler execution, context management, guardrails, streaming capabilities, and guided shopping experiences
• Take ownership of backend features and service integrations that improve reliability, scalability, and customer experience across AI-powered applications
• Collaborate closely with engineers, product managers, designers, data scientists, and domain service teams to deliver well-aligned and impactful solutions
• Define and maintain service contracts while integrating with search, personalization, shopper profile, LLM, and other consumer platform services
• Deliver production-ready software through comprehensive testing, monitoring, performance optimization, rollout planning, and operational excellence
• Support observability initiatives, troubleshoot production issues, and participate in maintaining service health and system stability
• Work with senior engineers to evolve architecture decisions into maintainable, extensible, and reliable software solutions

REQUIREMENTS

• Professional experience building and operating backend services using Java or a similar programming language (Python)
• Strong knowledge of HTTP APIs, microservice design, service boundaries, data modeling, automated testing, and production operations
• Proficiency with AWS and cloud-based application development and deployment
• Solid experience with data access layers, SQL databases, caching strategies, and storage solutions
• Strong knowledge of data structures, algorithms, and complexity analysis
• Familiarity with FastAPI or other modern Python web frameworks
• Experience integrating distributed services through APIs, shared contracts, or schema-based communication
• Familiarity with LangChain, LangGraph, LLM integrations, agent orchestration, asynchronous processing, or stateful workflow development
• Understanding of observability, software quality practices, performance optimization, and production readiness for backend systems
• Experience with search, recommendation engines, personalization platforms, marketplaces, or other consumer-facing products is a plus
• Strong communication skills with the ability to discuss progress, tradeoffs, dependencies, and risks effectively
• Collaborative, curious, and proactive mindset with the ability to navigate ambiguity and contribute within an evolving architecture
• Upper-Intermediate English level or higher