Senior IT Systems Engineer

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior IT Systems Engineer based in the United States.

We are looking for an experienced Senior IT Systems Engineer to design, implement, and maintain secure, scalable, and highly available IT infrastructure. In this role, you will take ownership of critical systems supporting 24/7 business operations while driving automation, monitoring, and infrastructure improvements. You will work across cloud, networking, identity management, and security environments to solve complex technical challenges. Collaborating with experienced engineers and developers, you will help shape architectural decisions and strengthen operational reliability. This is an opportunity to combine hands-on engineering with technical leadership in a fast-paced, innovative environment. You will also contribute to building resilient infrastructure that protects enterprise systems and enables long-term business growth.

• Design, implement, and maintain secure, scalable, and future-proof infrastructure across hybrid and multi-cloud environments, ensuring 24/7 service availability and performance.

• Develop, configure, and manage production monitoring solutions to improve infrastructure visibility, identify performance issues, and detect potential security threats.

• Participate in on-call rotations and provide technical support, troubleshooting, and incident resolution for critical production services.

• Automate operational processes and improve workflows through scripting, software development, and infrastructure automation.

• Develop and maintain internal documentation, including technical architecture diagrams, operational playbooks, knowledge bases, and system design documents.

• Build and maintain reliable web infrastructure, cloud services, and serverless solutions while continuously improving existing systems.

• Collaborate with IT engineers, developers, and cross-functional stakeholders to identify technical challenges, implement solutions, and expand infrastructure capabilities.

• Identify potential security vulnerabilities and implement improvements to strengthen infrastructure protection and operational resilience.

• Contribute to engineering standards, knowledge sharing, and continuous technical development across the team.

• At least 8 years of professional experience in Unix/Linux systems administration and software development, with strong hands-on expertise in enterprise infrastructure environments.

• Advanced proficiency in Shell/Bash scripting and automation tools within Linux/Unix environments.

• Solid understanding of enterprise networking and application protocols, including TCP/IP, HTTP, SSH, DNS, LDAP, and TLS.

• Experience with web infrastructure operations, including application development, deployment, and maintenance.

• Familiarity with distributed version-control systems and collaborative development workflows, particularly Git.

• Experience with virtualization technologies such as Linux KVM, along with a strong interest in cloud infrastructure, serverless architectures, and modern deployment practices.

• Knowledge of cloud platforms such as AWS, Azure, or GCP, as well as containerization and infrastructure management principles.

• Strong troubleshooting, analytical, and problem-solving abilities, with the capacity to independently manage complex technical challenges.

• Excellent written and verbal communication skills, including the ability to explain technical concepts clearly and collaborate across different teams.

• A proactive, security-conscious mindset, combined with sound technical judgment, adaptability, and a willingness to take ownership of unfamiliar challenges.

• Ability to express and defend technical recommendations constructively while remaining open to alternative perspectives.

Nice to have:

• Experience administering Windows, macOS, Active Directory, or Google Workspace environments.

• Familiarity with firewall configuration, security management, and enterprise network switching and routing equipment.

• Experience with Linux configuration management tools such as Ansible, Puppet, or Chef.

• Knowledge of additional networking and application protocols, including UDP, SMTP, NTP, and SNMP.

• Experience supporting desktop IT operations or acting as an escalation point for technical support.

• Annual base salary: $135,000–$149,000 USD.

• Eligibility for an annual discretionary, performance-based bonus.

• Stock option grants.

• Comprehensive medical, dental, and vision insurance, effective from the first day of employment.

• 401(k) retirement plan with employer matching.

• Flexible paid time off (PTO), sick leave, and paid federal holidays.

• Three additional paid days for volunteering.

• Paid parental leave.

• Flexible hybrid and remote working arrangements.

• Flexible Spending Accounts (FSA), dependent care accounts, and Employee Assistance Program (EAP), where applicable.

• Educational reimbursement opportunities.

• Pet insurance for eligible US employees.

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