Linux Administrator (Infrastructure)

Quadcode; United States; Remote; USD 102,000 - 170,000; Full time

Benefits offered by this job

Flexible working hours

AI subscriptions (Corporate AI tools)

Rewards marketplace credits

Remote work (full-time)

Job summary

Quadcode, a fintech company, is hiring a Linux Administrator to join the Infrastructure team. You will build and operate a private cloud based on OpenStack and Kubernetes, supporting 2,000+ VMs and 500+ servers for a large-scale trading platform.

You’ll work with automation, reliability, and continuous improvement in a fully remote role with flexible start times before 12:00 pm EET/EEST. Collaboration with development teams is essential to keep services running smoothly.

Qualifications

• 5+ years as Linux admin, DevOps, or SRE in production.
• Design, build, configure and troubleshoot Linux servers across bare metal, containers, cloud.
• Proficient in automation tools (Ansible, Salt, or Chef) and CI/CD workflows.

Responsibilities

• Oversee services and infrastructure components including DNS, GitLab, Artifactory, Vault.
• Perform upgrades, patching, backups, security scans, and monitoring tasks.
• Manage private clouds (OpenStack and Kubernetes) and troubleshoot production issues.
• Design and maintain Linux environments across bare metal, VMs, and containers.
• Resolve incidents, conduct post-mortems and root cause analysis.
• Ensure SLAs and reliability, reduce manual effort via automation.
• Document procedures and keep infrastructure knowledge up to date.
• Collaborate with development teams to support production services.

Skills

Linux administration

DevOps

OpenStack

Kubernetes

Docker

Automation

Scripting (Bash/Python)

CI/CD

Russian (C1)

English (B1)

Tools

GitLab

Artifactory

Prometheus

Loki

Vault

Nginx

MySQL/PostgreSQL

Job description

About the Team

We areQuadcode, a fintech company excelling in financial brokerage activities and delivering advanced financial products to our global clientele. Our flagship product, an internal trading platform, is offered as a Software-as-a-Service (SaaS) solution to other brokers.

About the role

We’re looking for a Linux Administrator to join our Infrastructure team , responsible for building, operating and continuously improving a private cloud infrastructure based on OpenStack and Kubernetes.

Our infrastructure supports the stable operation of a large-scale trading platform and includes 2,000+ virtual machines and 500+ physical servers, as well as a wide range of Linux systems and infrastructure services such as DNS, GitLab, Artifactory, Prometheus, Loki and Vault.

You’ll work in a team of experienced infrastructure engineers, using Scrum and Agile practices, with two-week sprints and a strong focus on automation, reliability and continuous improvement.

The position is full-time remote , with a flexible start time — anytime before 12:00 pm EET/EEST.

Why this role?

You’ll be part of the team responsible for the production environment behind products used by millions of users, working directly with development teams, helping them troubleshoot infrastructure-related issues and keep their services running reliably in production.

It’s a good fit for an engineer who enjoys troubleshooting, automation and making infrastructure more reliable and scalable, rather than simply maintaining servers.

Tasks

• Oversee various services and associated infrastructure components, including DNS, Gitlab, Artifactory, Vault, etc;
• Perform day-to-day operational tasks such as upgrades, CVE patching, backup and restore, security scans, and monitoring;
• Manage and support private clouds (Openstack and Kubernetes);
• Design, configure, maintain and troubleshoot Linux systems across different environments, including bare metal, virtual machines and containers.
• Resolve incidents, provide support coverage, categorize issues, conduct post-mortems, and perform root cause analysis;
• Ensure environments are stable and adhere to availability SLAs;
• Work towards reducing operational effort;
• Automate repetitive operational tasks and continuously reduce manual effort;
• Collaborate with development teams to troubleshoot infrastructure-related issues in production;
• Keep infrastructure documentation and operational procedures up to date;
• Engage in constant upskilling to stay updated with industry best practices.

Requirements

• 5+ years of professional experienceas a Linux system administrator, DevOps Engineer, or Site Reliability Engineer;
• Extensive experience in designing, building, configuring, and troubleshooting Linux servers across various environments (bare metal, container, cloud);
• Experience with Linux server configuration, maintenance and troubleshooting in production.
• Understanding of process control, logging and Linux service management.
• Experience with infrastructure services such as Vault, Artifactory, DNS and similar platform components.
• Proficiency with automation tools such as Ansible, Salt, or Chef;
• Experience with Docker, Kubernetes and containerized environments;
• Experience with monitoring and log aggregation tools like Grafana, ELK, or Graylog;
• Hands-on experience in deploying and maintaining systems on cloud solutions such as OpenStack, VMware, Proxmox, or public cloud platforms such as AWS, GCP, Azure.
• Skilled in scripting languages such as Bash and Python;
• Familiarity with configuring various servers and databases, including Apache Tomcat, Nginx, MySQL DB, PostgreSQL, Kafka, RabbitMQ, etc;
• Experience with DevOps tools and CI/CD workflows.
• At least C1 in Russian and B1 in English.

Nice to have

• Hands-on experience with Kubernetes, including troubleshooting workloads and cluster-related issues.
• Hands-on experience with OpenStack, including deployment, configuration, maintenance or troubleshooting of private cloud environments.
• Experience with GitLab CI/CD, Jenkins or GitHub Actions.
• Experience working with fintech/trading, or other high-load and mission-critical systems.

We offer

• Full-time remote work (service provider contract).
• Competitive compensation (EUR).
• Flexible working hours.
• CorporateAIsubscriptions (Claude, Gemini, GPT, etc.).
• Access to a rewards marketplace offering products and language courses, redeemable using the company’s internal currency.
• A strong team of engineers.
• Positive and friendly atmosphere.

With a team of 500+ creative and tech-driven people across the globe, Quadcode is the place where ideas turn into impact, where every project is a chance to grow, innovate, and make your mark.

Join us today, and let’s shape the future of fintech together!

Note:All applications will be treated with strict confidence. We thank all applicants for their interest, however, only those candidates selected for interviews will be contacted.