About Unified Infotech Unified Infotech is a multi-award-winning digital transformation partner with over 15 years of experience in delivering innovative technology solutions. Headquartered in Kolkata, with office in New York, we partner with startups, MSMEs and enterprises to build scalable digital products and transform their businesses through technology. Our expertise spans web, mobile and desktop application development, UI/UX design, SaaS and product engineering, IT consulting, staff augmentation, cloud migration and data analytics. With a strong focus on quality, innovation and customer success, we help businesses navigate their digital transformation journey. Role Overview We are looking for a motivated Linux & AWS Support Engineer to manage, monitor and troubleshoot Linux-based server environments and cloud infrastructure. The ideal candidate should have hands-on experience with Linux administration, basic AWS services, web servers, databases and infrastructure monitoring tools. The role involves ensuring system availability, maintaining infrastructure performance, supporting deployments and backups and responding to production incidents to ensure smooth and reliable operations.

Key Responsibilities
• Install, configure, manage and troubleshoot Linux servers and LAMP/LEMP environments.
• Maintain and support web server technologies such as Apache and Nginx, along with MySQL databases and PHP-based applications.
• Manage and monitor AWS services including EC2, S3, IAM, RDS and CloudWatch.
• Monitor server health, application availability and infrastructure performance using tools such as Zabbix, Nagios, Grafana,



Prometheus or similar platforms.
• Troubleshoot server, application, database, networking and performance-related issues.
• Analyze system and application logs and monitor CPU, memory, disk usage and other critical system metrics.
• Respond to alerts, investigate incidents and take appropriate corrective actions to minimize downtime.
• Support application deployments, backup and recovery processes, SSL certificate management and routine maintenance activities.
• Perform basic security checks, access management and system updates in accordance with established procedures.
• Maintain technical documentation, incident records and operational checklists.
• Participate in on-call support and incident management activities as required.
• Collaborate with development and other technical teams to resolve infrastructure and production issues. Required Skills and Qualifications
• Good knowledge of Linux system administration, preferably Ubuntu, CentOS or similar distributions.
• Basic hands-on experience with AWS services such as EC2, S3, IAM, RDS and CloudWatch.
• Working knowledge of Apache/Nginx web servers and MySQL databases.
• Understanding of LAMP/LEMP stack environments and basic web application architecture.




• Hands-on experience with at least one infrastructure or application monitoring tool such as Zabbix, Nagios, Grafana or Prometheus.
• Basic knowledge of Bash/Shell scripting and Git.
• Understanding of server logs, resource utilization, system performance and troubleshooting methodologies.
• Basic understanding of networking concepts such as DNS, TCP/IP, ports, firewalls and connectivity troubleshooting.
• Valuable analytical, problem-solving and communication skills.
• Ability to work collaboratively and respond effectively to technical issues in a production environment. Good to Have
• Basic knowledge of Docker and containerization.
• Familiarity with CI/CD pipelines and deployment workflows.
• Exposure to Infrastructure as Code tools such as Terraform or configuration management tools such as Ansible.
• Familiarity with Prometheus and Grafana dashboards, metrics and alerting.
• Understanding of SSL/TLS certificates, security best practices and backup/recovery strategies.
• Exposure to cloud infrastructure automation and performance optimization. What We Are Looking For We are looking for a proactive and detail-oriented professional with a strong troubleshooting mindset and a willingness to learn. The candidate should be comfortable working with server infrastructure, monitoring systems and cloud environments while contributing to the stability, security and reliability of production systems. If you enjoy solving technical challenges and working with Linux systems and cloud technologies, we would love to hear from you.

📌 Junior Site Reliability Engineer (Kolkata)
🏢 unified infotech
📍 Kolkata