Senior DevOps / Infrastructure Engineer (Americas, US time zones)

<p><strong>Remote (Americas, US time zones) · Full time</strong></p>
<h2>About Startale</h2>
<p>Startale builds onchain finance as a vertically integrated stack: the chains, a JPY stablecoin, payments, and a consumer app. With SBI Group we are building <strong>Strium</strong>, a fully onchain exchange; we issued <strong>JPYSC</strong>, Japan's first trust-licensed JPY stablecoin; with Sony Group we operate <strong>Soneium</strong>; and <strong>Startale App</strong>, used by 210k monthly users, is the front door to all of it. We raised a ~$63M Series A from Sony, SBI and others. The team is ~70 people across 20 nationalities, and English is the working language of engineering.</p>
<h2>Why US time zones</h2>
<p>Our engineering team is spread across Asia and Europe. This role anchors infrastructure coverage in US hours: you will be the infrastructure owner awake when most of the team is not. You must be physically based in a US time zone (UTC-8 to UTC-5), whether in the US, Canada, or Latin America. Working US hours from another region does not qualify.</p>
<h2>About the Role</h2>
<p>We are looking for a Senior DevOps / Infrastructure Engineer to own the infrastructure, deployment, and operational systems behind StartaleApp, Strium, and other products across the Startale ecosystem. This is a senior, hands-on role: you design, build, and operate production infrastructure end to end, from cloud and Kubernetes to CI/CD, databases, observability, and security.</p>
<p>You will work primarily on two demanding products. <strong>StartaleApp</strong> is a user-facing Web3 wallet and application platform whose backend combines traditional cloud services and databases with blockchain nodes, indexers, and transaction processing. <strong>Strium</strong>, built with SBI Group, is a next-generation decentralized exchange bringing Japanese equities onchain, with a fully onchain order book and a consensus layer purpose-built for low-latency, high-throughput trading.</p>
<p>Both run under high load, strict availability and security requirements, and real production conditions. We want someone who builds infrastructure rather than maintains it: comfortable making architectural decisions, automating everything that repeats, and diagnosing complex production issues. Experience running blockchain infrastructure is a significant advantage, and a SecOps or cloud security background is a major plus.</p>
<h2>What You Will Do</h2>
<ul>
<li>Own infrastructure architecture and operations for StartaleApp, Strium, and other production systems.</li>
<li>Design, build, and operate highly available cloud infrastructure on AWS: Kubernetes clusters, networking, storage, scaling, upgrades.</li>
<li>Manage everything as code: Terraform, GitOps, and CI/CD pipelines with safe rollouts and rollback.</li>
<li>Operate PostgreSQL in production: availability, replication, backups, performance, recovery.</li>
<li>Build observability across infrastructure, applications, databases, and blockchain nodes, with alerting that catches incidents early.</li>
<li>Run blockchain infrastructure (nodes, RPC services, indexers) and monitor it down to protocol level: sync, connectivity, transaction processing.</li>
<li>Design disaster recovery and failover for critical systems, and harden security: access control, secrets, vulnerability management, monitoring.</li>
<li>Diagnose production incidents across the full stack, and remove operational bottlenecks with automation instead of manual procedure.</li>
</ul>
<h2>What You Bring</h2>
<ul>
<li>5+ years in DevOps, SRE, platform, or infrastructure engineering.</li>
<li>A track record of building and operating production infrastructure for highly available systems, where availability directly affected users or the business.</li>
<li>Deep hands-on Kubernetes, AWS, and Linux experience.</li>
<li>Infrastructure as code with Terraform, GitOps practices, and CI/CD pipeline design.</li>
<li>Solid networking fundamentals: DNS, load balancing, TLS, service discovery.</li>
<li>PostgreSQL in production: replication, backups, recovery, performance.</li>
<li>High-availability design, incident response, root-cause analysis, and capacity planning.</li>
<li>Hands-on experience operating blockchain infrastructure (nodes, RPC, indexers, validators, or data pipelines) and an understanding of how distributed blockchain networks fail.</li>
</ul>
<h2>Strong Plus</h2>
<ul>
<li><strong>Security:</strong> SecOps or cloud security experience, hardening production environments, AWS security services and IAM design.</li>
<li><strong>Platform breadth:</strong> bare-metal operations, Helm or ArgoCD, messaging systems such as Kafka or NATS, observability stacks such as Prometheus, Grafana, Loki, or OpenTelemetry.</li>
<li><strong>Blockchain depth:</strong> operating chain infrastructure at significant scale; Ethereum, Polkadot, or L2 ecosystems.</li>
<li><strong>Domain:</strong> financial, trading, or other latency-sensitive systems; using AI tools in infrastructure workflows; Go, Rust, or TypeScript.</li>
</ul>
<h2>How We Think About This Role</h2>
<p>We care less about specific tools and more about how you engineer:</p>
<ul>
<li>Build infrastructure, not just operate it, and own problems from architecture through production.</li>
<li>Design for high load and partial failure, and automate what repeats.</li>
<li>Diagnose across the full stack, from Kubernetes and networking to databases and blockchain nodes.</li>
<li>Treat infrastructure as a product, with users, reliability requirements, and long-term maintenance needs.</li>
</ul>
<h2>Why Join</h2>
<ul>
<li>Build and operate the core infrastructure behind StartaleApp and Strium, including a DEX designed for high-throughput, low-latency trading.</li>
<li>One role spanning cloud, Kubernetes, distributed systems, databases, and blockchain infrastructure.</li>
<li>Significant ownership and direct product impact in a small, highly technical team.</li>
<li>Competitive compensation and equity.</li>
</ul>