Job Description

We are seeking an experienced Linux Engineer to join our team, responsible for ensuring the stability, security, and performance of our Linux-based infrastructure. The ideal candidate will have hands-on experience with Linux OS patching, SSL, DNS, and SMTP. The position requires working on a night shift from 7:00 PM IST to 4:00 AM IST.

Key Responsibilities:

Monitor and maintain Linux-based servers and systems, ensuring optimal performance, security, and uptime.
Perform regular patching and updates of Linux operating systems, including kernel updates, security patches, and software updates.
Configure and manage SSL certificates, ensuring secure communication protocols and encryption.
Design, implement, and maintain DNS infrastructure, including zone files, DNS servers, and DNSSEC.
Configure and troubleshoot SMTP servers, ensuring reliable email communication and compliance with security standards.
Troubleshoot and resolve technical issues related to Linux systems, applications, and services.
Collaborate with the development team to ensure smooth integration of new applications and services with existing infrastructure.
Develop and maintain technical documentation, including installation guides, troubleshooting procedures, and knowledge base articles.
Participate in on-call rotation for after-hours support, providing timely and effective resolution of critical issues.
Stay up-to-date with the latest Linux distributions, security patches, and best practices, applying this knowledge to improve system security and performance.
Work closely with the team to identify and prioritize improvements to the infrastructure, proposing and implementing changes as needed.
Provide technical guidance and support to junior team members and other stakeholders.

Requirements:

Bachelor's degree in Computer Science, Information Technology, or related field.
At least 5+ years of experience in Linux system administration, with a focus on patching, SSL, DNS, and SMTP.
Strong understanding of Linux operating systems, including kernel configuration, file systems, and networking.
Experience with SSL/TLS certificate management, including certificate issuance, revocation, and renewal.
Knowledge of DNS protocols and DNS server software (e.g., BIND, PowerDNS).
Familiarity with SMTP protocols and email server software (e.g., Postfix, Sendmail).
Strong troubleshooting and problem-solving skills, with the ability to work independently and as part of a team.
Excellent communication and documentation skills, with the ability to explain complex technical concepts to non-technical stakeholders.
Experience with scripting languages (e.g., Bash, Python) and automation tools (e.g., Ansible, Puppet) is a plus.
Ability to work effectively in a 24/7 environment, including night shifts, and be available for on-call duties.
Strong attention to detail, with a focus on security, reliability, and performance.