Staff Platform Engineer

Posted Yesterday
2 Locations
In-Office or Remote
162K-345K Annually
Senior level
Blockchain • Cryptocurrency • NFT • Web3
OpenSea is building the destination for the onchain economy — where anyone can trade everything.
The Role
Design, build, and maintain platform services, infrastructure, and tooling to improve developer experience, reliability, and scalability. Own complex systems end-to-end, add observability and CI, and embed AI-enabled workflows to accelerate product delivery and operational excellence.
Summary Generated by Built In

OpenSea is building the gateway to the onchain economy - a rich world of communities, assets & creative expression uniquely possible with native digital ownership. Our products support millions of users and have helped shape onchain markets that exist today—and we're just getting started.

Our goal is to build the highest-leverage, most AI-native team in crypto (and ideally beyond.) We believe that a small team (broken into even smaller teams with extreme ownership) can accomplish enormous results with the right people, the right tools, and the right company-wide investments in AI. We are building that team.

We're looking for a highly skilled, curious, and self-driven Staff Platform Engineer to help build the technical foundations that power OpenSea. In this role, you'll design and evolve the platform, services, and infrastructure that enable our engineering teams to build, deploy, and operate products quickly, reliably, and at scale. You'll partner closely with product engineers to improve developer experience, system performance, and operational excellence while helping evolve the AI-enabled workflows, engineering systems, and technical foundations that make our entire team more effective builders.

Responsibilities

In the age of AI, Platform teams have two main roles - architect, build, and maintain critical systems, and enable the rest of the team to work safely and productively across your areas of ownership. Our goal is to make the systems protect themselves and enable everyone to build quickly.

  • 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 (where your agents can't yet!)

  • Build and ship high-quality, reliable software leveraging AI, modern development tools, and strong engineering judgment

Requirements

  • 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

The base salary for this full-time position, spanning multiple internal levels depending on qualifications, ranges from $190,000 to $345,000 USD for candidates based in the United States and $161,500 to $293,250 USD for candidates based in the European Union, plus benefits & equity. Compensation for candidates based outside of the US and EU will vary to reflect local market conditions.

If you don't think you meet all of the criteria above but still are interested in the job, please apply. Nobody checks every box, and we're looking for someone who is excited to join the team.

#LI-Remote

Benefits & Perks

🏥 Health Benefits: We cover 100% Dental/Vision/Medical for employees and 90% for dependents

🌴 Flexible Time Off Policy: Our flexible time off policy is aimed at letting our employees take as much time off as they'd like to refresh so long as it doesn't interfere with their ability to meet their goals and contribute effectively to company velocity

👶 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 to get together for fun and collaboration

☕ Team Member Co-Working and Gathering Expense

🖥 MacBook Pro & WFH Stipend to make sure you are set up for success

🌯 Weekly $50 Uber Eats credit

By clicking submit an application below, you consent to our use and processing of your data as described in our Candidate Privacy Notice.

Please be aware that OpenSea participates in E-Verify to confirm employment eligibility.

Skills Required

  • 7+ years of software engineering experience building large-scale backend or platform systems
  • 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
  • Experience leveraging AI tools and workflows to improve engineering quality, efficiency, and team effectiveness
  • Excitement for making independent technical decisions balancing reliability, scalability, performance, and long-term maintainability
  • Passion for Web3, digital ownership, AI, or other emerging technologies
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The Company
HQ: New York, NY
75 Employees
Year Founded: 2017

What We Do

At OpenSea, we’re building the destination for the onchain economy — a place where anyone, anywhere, can trade everything seamlessly. In 2021, we helped bring the first wave of everyday internet users onchain, introducing millions to digital ownership through NFTs. Collectors, artists, gamers, and creators all found a new way to own and exchange digital property. Now we’re expanding that vision. The next chapter of OpenSea is about powering an open, borderless marketplace for all onchain assets — tokens, culture, art, ideas, the digital and the physical — all in one trusted, unified experience. Our mission is to make onchain participation as simple and intuitive as using the internet itself. We’re building the infrastructure and products that make trading onchain accessible, secure, and deeply human.

Why Work With Us

At OpenSea, we’re building the future of the onchain economy — open, interoperable, and owned by its users. Join us to shape a platform where creativity, culture, and ownership thrive together.

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