Full Stack Developer (Java & Ruby)

Job Description: Senior Software Engineer (Full Stack) The Customer Experience team is seeking a kind, curious, and highly collaborative Senior Software Engineer who enjoys solving complex technical challenges and building exceptional user experiences. Our team is responsible for creating seamless and compelling experiences that make it easy for individuals to consign luxury items. We place a strong emphasis on collaboration, continuous learning, individual growth, and professional development. As a Senior Software Engineer, you will be both a hands-on technical contributor and a key influencer in shaping our engineering direction. You will lead and contribute to significant initiatives, mentor fellow engineers through code reviews and pair programming, and help drive the evolution of our technology platform. We are particularly excited to meet candidates who are passionate about luxury retail, e-commerce, sustainability, and supporting a circular economy for high-end goods. What You’ll Do Design, develop, and maintain high-quality, scalable, performant, and testable software solutions. Build and enhance customer-facing applications that directly support strategic company initiatives. Contribute to technical architecture and engineering decisions that shape the future of our platform. Collaborate closely with product managers, designers, and engineers to deliver impactful features. Review pull requests and provide thoughtful, constructive feedback to teammates. Participate in pair programming and knowledge-sharing activities across the team. Deploy production-ready code and support applications throughout the software development lifecycle. Continuously learn and explore new technologies, design patterns, and engineering practices. What Makes You Successful You are curious, adaptable, and continuously seek opportunities to learn. You thrive in collaborative environments and enjoy mentoring fellow engineers. You balance technical excellence with pragmatic decision-making. You care deeply about delivering value to users through technology. You are excited by the opportunity to contribute to a mission-driven organization focused on sustainability and luxury resale. Technology Stack You will have the opportunity to work with a modern technology stack, including: Java, Kotlin, TypeScript, GraphQL, Kafka, AWS Lambda, PostgreSQL, DynamoDB Legacy services are currently built with: Ruby on Rails, Elixir, React Required Experience 7+ years of professional software development experience. Strong proficiency in Java or Kotlin, along with experience working in Ruby on Rails environments. Expertise in modern JavaScript (ECMAScript), HTML, and CSS. Experience building applications with React and related ecosystem tools, including Node.js and npm. Familiarity with RESTful APIs, Git, TypeScript, IDEs, version control systems, and deployment tools. Understanding of event-driven architectures, GraphQL, and database design fundamentals. Strong problem-solving skills and a user-centric engineering mindset. Interest in retail, e-commerce, luxury consignment, sustainability, or circular economy business models. Preferred Qualifications Experience implementing or maintaining Kafka-based event streaming solutions. Experience working with Elixir. Experience decomposing monolithic applications into microservices. Familiarity with distributed systems and service-oriented architectures.