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Staff Platform Engineer at OpenSea. Location Information: United States. The world’s leading peer-to-peer marketplace for NFTs for buyers, sellers and collectors. Design, build, and evolve the platform services, infrastructure, and internal tooling that power OpenSea's products. Own complex technical systems from definition through implementation, balancing scalability, reliability, maintainability, and developer experience. Bring best-in-class observability, monitoring, and alerting to all of the systems at OpenSea. Maintain and improve AI skills & tools to make our systems more accessible, introspectable, and easy to contribute to. Accelerate and expand CI coverage to improve correctness and AI verifiability. Partner closely with product teams to accelerate build & deployment of critical products. Build and ship high-quality, reliable software leveraging AI, modern development tools, and strong engineering judgment. 7+ years of software engineering experience building large-scale backend or platform systems. Strong fluency in JVM languages such as Kotlin or Java. Experience designing and operating distributed systems, backend services, and modern cloud infrastructure. Strong understanding of platform engineering principles, developer tooling, CI/CD, observability, and operational best practices. Demonstrated ability to own complex, ambiguous technical problems and deliver thoughtful, scalable solutions. Excitement for making independent technical decisions balancing reliability, scalability, performance, and long-term maintainability. Experience leveraging AI tools and workflows to improve engineering quality, efficiency, and team effectiveness. Passion for Web3, digital ownership, AI, or other emerging technologies. Pay range:. $190K - $345K. Health Benefits: We cover 100% Dental/Vision/Medical for employees and 90% for dependents. Flexible Time Off Policy. Parental Leave: 16 Weeks of Paid Parental Bonding & up to 8 additional weeks for the birthing parent. Mental Health: We offer access to Spring Health, covering 8 therapy & 8 coaching sessions per year. 11 Company Holidays. Fidelity 401K Plan. Internet/Mobile Reimbursement Plan. Reimbursement or Monthly Snack Delivery. Company & Team retreats. Team Member Co-Working and Gathering Expense. MacBook Pro & WFH Stipend. Weekly $50 Uber Eats credit