System administration jobs in crypto and blockchain companies

Join Tether and Shape the Future of Digital FinanceAt Tether, we’re not just building products, we’re pioneering a global financial revolution. Our cutting-edge solutions empower businesses—from exchanges and wallets to payment processors and ATMs—to seamlessly integrate reserve-backed tokens across blockchains. By harnessing the power of blockchain technology, Tether enables you to store, send, and receive digital tokens instantly, securely, and globally, all at a fraction of the cost. Transparency is the bedrock of everything we do, ensuring trust in every transaction. Innovate with TetherTether Finance: Our innovative product suite features the world’s most trusted stablecoin, USDT, relied upon by hundreds of millions worldwide, alongside pioneering digital asset tokenization services.But that’s just the beginning:Tether Power: Driving sustainable growth, our energy solutions optimize excess power for Bitcoin mining using eco-friendly practices in state-of-the-art, geo-diverse facilities.Tether Data: Fueling breakthroughs in AI and peer-to-peer technology, we reduce infrastructure costs and enhance global communications with cutting-edge solutions like KEET, our flagship app that redefines secure and private data sharing.Tether Education: Democratizing access to top-tier digital learning, we empower individuals to thrive in the digital and gig economies, driving global growth and opportunity.Tether Evolution: At the intersection of technology and human potential, we are pushing the boundaries of what is possible, crafting a future where innovation and human capabilities merge in powerful, unprecedented ways. Why Join Us?Our team is a global talent powerhouse, working remotely from every corner of the world. If you’re passionate about making a mark in the fintech space, this is your opportunity to collaborate with some of the brightest minds, pushing boundaries and setting new standards. We’ve grown fast, stayed lean, and secured our place as a leader in the industry.If you have excellent English communication skills and are ready to contribute to the most innovative platform on the planet, Tether is the place for you.Are you ready to be part of the future? About the job Overview We're seeking an experienced Senior Systems Administrator to architect, deploy, and maintain mission-critical infrastructure for our Tether Data Division. The ideal candidate will combine deep technical expertise with a security-first mindset. A suitable candidate should be credible and exhibit Strong problem-solving and analytical abilitiesExperience managing mission-critical systems with 99.99% uptime requirementsExcellent documentation and communication skillsProven track record of incident management and resolutionAbility to work independently and as part of a global teamStrong security, threat detection and mitigation experience Responsabilities Design, implement, and maintain high-availability infrastructure solutions at scale with hundreds of serversOrchestrate deployments and updates across our infrastructureImplement and maintain robust monitoring, alerting, and incident response systemsCollaborate with development teams to optimize application performanceConduct internal security audits and implement hardening measuresProvide technical mentorship to junior team members 5+ years of hands-on experience with Linux systems administrationStrong expertise in:Infrastructure as Code (Terraform, Ansible)Container orchestration (Docker/Podman)GPU container optimization and managementVirtualization platforms (QEMU/KVM)Network architecture (VPN, SDN, Load Balancing)Security practices and infrastructure hardeningNodeJS application deployment and scalingMonitoring and observability tools (Prometheus, Grafana)CI/CD pipelines (Jenkins / GitLab / Github CI)Cloud platforms (AWS, GCP)Version control systems (Git)Usage of FIDO2 and Yubikeys for server administration