Senior IT Administrator

Astakenis Consulting; Electronic City; On-site; INR 900,000 - 1,200,000; Full time

Job summary

Astakenis Consulting in Bangalore's Electronic City seeks a Senior IT Admin with 4+ years of hands-on experience to manage and secure the organization’s IT infrastructure, cloud environment, servers, databases, and networks.

You will work across AWS, Linux, Oracle databases, Windows servers, VMware, and DevOps toolchains (Jenkins, Git, Docker), ensuring system health, patching, and proactive improvement. Strong collaboration with teams and vendors is essential.

Qualifications

• Bachelor’s degree in Computer Science, Information Technology, Computer Applications, or a related field.
• 4+ years of relevant experience in IT Administration, System Administration, Infrastructure Management, or a similar role.
• Strong hands-on experience in AWS infrastructure and Linux system administration.
• Practical experience with Oracle Database Administration, DevOps tools, networking, firewalls, Windows Servers, and VMware environments.
• Experience with CI/CD tools such as Jenkins, Git, and Docker.
• Good troubleshooting and problem-solving skills across infrastructure, systems, networks, and applications.
• Knowledge of IT security, system hardening, patch management, monitoring, and endpoint security.
• Basic understanding of AI, Generative AI, and LLM concepts and applications.
• Good communication and coordination skills for working with internal teams, vendors, and stakeholders.
• Candidates with a notice period of less than 30 days are preferred.

Responsibilities

• Cloud & Infrastructure (AWS) management and maintenance of AWS infrastructure components.
• Linux Systems Administration for servers (CentOS, RHEL, Oracle Linux) and related services.
• Networking configuration and troubleshooting including firewalls and VPNs.
• Oracle Database Administration covering installation, tuning, backups and DR.
• DevOps Tools & Practices: CI/CD pipelines with Jenkins, Git, and Docker; monitoring with Nagios/CloudWatch.
• Hardware & Endpoint Security management; trend protection and device support.
• AI Knowledge: basic AI/LLM concepts and tooling usage in IT operations.

Skills

AWS

Linux

Oracle Database

Networking

Endpoint security

Windows Server

VMware

CI/CD tools

Jenkins

Git

Docker

Education

Bachelor's degree (CS/IT/CA)

Tools

Jenkins

Git

Docker

VMware

Oracle Database

Job description

Job Details

Position: Senior IT Admin

Experience: 4+ Years

Work Location: Bangalore Electronic City

Work Mode: In-Office

Notice Period: Less than 30 days

Job Overview

We are looking for an experienced IT Admin with 4+ years of experience to manage and maintain the organization's IT infrastructure, cloud environment, servers, databases, network, security systems, hardware, and DevOps tools. The ideal candidate should have strong hands‑on experience across AWS, Linux, Oracle Database, networking, endpoint security, Windows Servers, VMware, and IT operations.

Required Qualifications

• Bachelor’s degree in Computer Science, Information Technology, Computer Applications, or a related field.
• 4+ years of relevant experience in IT Administration, System Administration, Infrastructure Management, or a similar role.
• Strong hands‑on experience in AWS infrastructure and Linux system administration.
• Practical experience with Oracle Database Administration, DevOps tools, networking, firewalls, Windows Servers, and VMware environments.
• Experience with CI/CD tools such as Jenkins, Git, and Docker.
• Good troubleshooting and problem‑solving skills across infrastructure, systems, networks, and applications.
• Knowledge of IT security, system hardening, patch management, monitoring, and endpoint security.
• Basic understanding of AI, Generative AI, and LLM concepts and applications.
• Good communication and coordination skills for working with internal teams, vendors, and stakeholders.
• Candidates with a notice period of less than 30 days are preferred.

Key Responsibilities

1. Cloud & Infrastructure (AWS)

Manage and maintain comprehensive AWS infrastructure, including:

• Core Services: EC2, S3, IAM, VPC, EFS, EBS, Load Balancer, Security Groups
• Compute & Containers: ECS, ECR
• Notifications & Messaging: SES, SNS
• Security & Monitoring: GuardDuty, CloudTrail, WAF, CloudWatch
• Other Services: Amazon Connect, ElastiCache, CloudMap

2. Linux Systems Administration

• Administer and troubleshoot Linux servers (CentOS, RHEL, Oracle Linux).
• Configure and manage Nginx, Tomcat, WordPress, LVM, Python, and cloud‑based security firewalls.
• Perform system performance tuning, patch management, and proactive monitoring.
• Ensure system integrity, security hardening, and compliance with IT policies.

3. Networking

• Configure and troubleshoot routers, switches, firewalls, VPNs, and LAN/WAN connectivity.
• Manage IP address assignments, DNS, DHCP, IPv4 policies, and inbound/outbound rules.
• Administer and monitor FortiGate Firewalls, including SSL VPN configuration and diagnostics.

4. Oracle Database Administration

• Install, configure, and manage Oracle databases (12c, 19c, 21c).
• Handle schema creation, datafile/tablespace management, and performance tuning.
• Perform backups and restores, upgrades, migrations, and disaster recovery operations.

5. DevOps Tools & Practices

• Build and maintain CI/CD pipelines using tools such as Jenkins, Git, and Docker.
• Deploy application code across environments and resolve deployment issues.
• Monitor and maintain DevOps toolchains, ensuring system health via Nagios and CloudWatch.

6. Hardware & Endpoint Security

• Maintain and support laptops, desktops, and peripheral hardware.
• Administer and monitor Trend Micro Vision One and ensure endpoint protection compliance.
• Coordinate with vendors for hardware procurement, maintenance, and warranty services.
• Configure and manage Windows Servers and VMware environments.
• Manage and support ESSL biometric time attendance systems and CCTV, ensuring accurate timekeeping and integration with HR systems.

7. AI Knowledge

• Basic understanding of AI, Generative AI, and LLM concepts and applications.
• Use AI tools for troubleshooting, automation, documentation, and IT operations.
• Basic knowledge of AI security, prompt engineering, and LLM models.