Senior Software Engineer (Full-Stack, PSA Liquidity Platform)

Join our team as a Senior Software Engineer to build the PSA Liquidity Platform, a product suite that connects supply and demand across our marketplace. You will own the technical design and delivery of the end-to-end buyer and seller experiences, partnering with a dedicated cross-functional team. This is a high-visibility, high-impact role on our Marketplace engineering team, where you will build systems that maximize GMV, conversion, and offer-to-sale velocity at scale.

• Concevoir et livrer l'expérience utilisateur complète pour les acheteurs et les vendeurs, en collaborant avec une équipe interfonctionnelle.
• Diriger le développement de la plateforme d'achat de nouvelle génération, y compris la gestion des campagnes et l'analyse.
• Concevoir et exploiter des microservices et des systèmes distribués, en prenant des décisions architecturales pragmatiques.
• Observability-first mindset. You instrument what you ship using tools such as Datadog, New Relic, or OpenTelemetry. You're comfortable building dashboards, setting up monitoring/alerting, and using distributed tracing to debug production issues
• Distributed-systems depth. You've designed and operated microservices and Kafka-based event-driven architectures, run workloads on Kubernetes, and know your way around the AWS ecosystem
• Passion for collecting is a plus
• Systems thinker and customer focused. You naturally decompose complex, multi-service systems into clean boundaries and intuitive interfaces, without losing sight of the customer experience
• Bias for ownership. You have an extreme ownership mindset and will wear any hat required to get the job done. You thrive in a fast-moving, self-directed environment — you set the bar, hold it, and take full accountability for outcomes
• Influential communicator. A strong written and verbal communicator who aligns engineers, product partners, and stakeholders without direct authority, makes crisp calls, and brings people with you
• AI-first engineer. You build with AI tooling across the SDLC - from planning and code generation to review and debugging. You lean on your experience to make high-conviction calls quickly
• 6+ years engineering experience. You have a track record of designing, shipping, and scaling products 0-to-1 that have measurable business impact. Ideally 2+ years operating as a Senior IC or equivalent technical leadership level at a high-growth company or a scaled consumer platform
• Full-stack range. You have strong proficiency in Java (Spring Boot) and equally comfortable in modern frontend frameworks like React and Svelte, moving fluidly across the stack