Staff Platform Engineer — AI-Native Backend at Scale

blockchaincapital.com; United States; On-site; USD 190,000 - 345,000; Full time

Benefits offered by this job

Health benefits

Flexible time off

Parental leave

Mental health support

401K plan

Internet stipend

Snack delivery

Company retreats

WFH stipend

Uber Eats credit

Job summary

OpenSea is building the gateway to the onchain economy. We seek a Staff Platform Engineer to design and evolve platform services, infrastructure, and internal tooling that empower engineering teams to build, deploy, and operate products quickly and reliably at scale.

You will collaborate with product engineers to improve developer experience, system performance, and operational excellence while advancing AI-enabled workflows and foundational engineering systems across the organization.

Qualifications

• 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.

Responsibilities

• 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.

Skills

Java/Kotlin

Distributed systems

Cloud infrastructure

CI/CD

Observability

AI tooling

Web3

Job description

OpenSea is building the gateway to the onchain economy. We seek a Staff Platform Engineer to design and evolve platform services, infrastructure, and internal tooling that empower engineering teams to build, deploy, and operate products quickly and reliably at scale.

You will collaborate with product engineers to improve developer experience, system performance, and operational excellence while advancing AI-enabled workflows and foundational engineering systems across the organization.