Senior System Administrator(3-5 years)- SSA23092026EN

Trinesis Technologies Private Limited; Pune District; On-site; INR 900,000 - 1,300,000; Full time

Job summary

Trinesis Technologies Private Limited in Pune, India, seeks a Senior System Administrator to manage IT infrastructure, systems, networks, security, DNS, SSL certificates, and end-user support. The role requires hands-on experience in system and network administration, ensuring availability, security, and reliability of IT systems while delivering timely support to employees.

The ideal candidate will troubleshoot hardware and software issues, manage domains and DNS, monitor servers and network

Qualifications

• Bachelor's degree in Computer Science, Information Technology, or a related field.
• 3-5 years of relevant experience in System Administration / IT Infrastructure.
• Strong knowledge of Windows/Linux administration.
• Good understanding of TCP/IP, DNS, DHCP, VPN, LAN/WAN, routing, and network troubleshooting.
• Hands-on experience with domain and DNS management.
• Experience managing SSL/TLS certificates.
• Good knowledge of firewalls, antivirus, endpoint security, and access management.
• Strong hardware and software troubleshooting skills.
• Experience with IT asset and vendor management.
• Good problem-solving and analytical skills. Strong communication and documentation skills.

Responsibilities

• Manage and troubleshoot hardware, software, operating systems, and network-related issues.
• Provide technical support to employees and resolve IT tickets within defined SLAs.
• Install, configure, maintain, and troubleshoot desktops, laptops, printers, servers, and other IT equipment.
• Monitor and maintain servers, networks, routers, switches, firewalls, and other infrastructure.
• Manage company domains, including purchase, renewal, registration, and ownership details.
• Configure and maintain DNS records such as A, CNAME, MX, and TXT records.
• Manage SSL/TLS certificates, including procurement, installation, renewal, and troubleshooting.
• Monitor system and network performance and perform regular health checks.
• Maintain IT security systems, including antivirus, endpoint protection, firewalls, access controls, and backups.
• Coordinate with IT vendors, domain registrars, hosting providers, and service providers.
• Perform regular backups and support data recovery and disaster recovery activities.
• Prepare and maintain IT documentation, SOPs, troubleshooting guides, and system configurations.
• Investigate recurring or major incidents and perform root-cause analysis.
• Participate in system upgrades, migrations, infrastructure improvements, and IT projects.

Skills

Windows & Linux

DNS/TCPIP

Troubleshooting

Documentation

Vendor management

Communication

Education

Bachelor's degree in CS/IT

Tools

Active Directory / Entra ID

DNS management

SSL/TLS certificates

Firewalls/Endpoint security

VMware/Hyper-V

Office 365 / Google Workspace

AWS/Azure basics

Job description

Senior System Administrator(3-5 years)- SSA23092026EN

Pune , India

We are looking for a Senior System Administrator to manage and maintain our ITinfrastructure, systems, networks, security, domains, DNS, SSL certificates, and end-usersupport. The ideal candidate should have strong troubleshooting skills and hands‑on experiencein system and network administration.

The candidate will be responsible for ensuring the availability, security, performance, andreliability of IT systems while providing timely technical support to employees.

System Administration

Domain and DNS management

SSL/TLS certificates

Active Directory / Microsoft Entra ID

Responsibilities

• Manage and troubleshoot hardware, software, operating system, andnetwork-related issues.
• Provide technical support to employees and resolve IT tickets within defined SLAs.
• Install, configure, maintain, and troubleshoot desktops, laptops, printers, servers, andother IT equipment.
• Monitor and maintain servers, networks, routers, switches, firewalls, and otherinfrastructure.
• Manage company domains, including purchase, renewal, registration, and ownershipdetails.
• Configure and maintain DNS records such as A, CNAME, MX, and TXT records.
• Manage SSL/TLS certificates, including procurement, installation, renewal, andtroubleshooting.
• Monitor system and network performance and perform regular health checks.
• Maintain IT security systems, including antivirus, endpoint protection, firewalls,access controls, and backups.
• Manage user accounts, permissions, system access, and security configurations.
• Maintain accurate records of IT assets, hardware, software, licenses, andconfigurations.
• Coordinate with IT vendors, domain registrars, hosting providers, and service providers.
• Perform regular backups and support data recovery and disaster recovery activities.
• Prepare and maintain IT documentation, SOPs, troubleshooting guides, and systemconfigurations.
• Investigate recurring or major incidents and perform root‑cause analysis.
• Participate in system upgrades, migrations, infrastructure improvements, and ITprojects.
• Identify opportunities to improve IT processes, security, and infrastructure efficiency.
• Provide technical guidance and basic IT security awareness training to employees.
  

Must Have

• Bachelor's degree in Computer Science, Information Technology, or a related field.
• 3 - 5 years of relevant experience in System Administration / IT Infrastructure.
• Strong knowledge of Windows/Linux administration.
• Good understanding of TCP/IP, DNS, DHCP, VPN, LAN/WAN, routing, and networktroubleshooting.
• Hands‑on experience with domain and DNS management.
• Experience managing SSL/TLS certificates.
• Good knowledge of firewalls, antivirus, endpoint security, and access management.
• Strong hardware and software troubleshooting skills.
• Experience with IT asset and vendor management.
• Good problem‑solving and analytical skills.Strong communication and documentation skills.

Nice to have

• Experience with Active Directory / Microsoft Entra ID.
• Knowledge of Microsoft 365 or Google Workspace administration.
• Experience with AWS, Azure, or other cloud platforms.
• Knowledge of VMware / Hyper‑V.
• Experience with backup and disaster recovery solutions.
• IT certifications such as CCNA, CompTIA, Microsoft, AWS, Azure, or ITIL.

What's great in the job?

• Take ownership of critical IT infrastructure and keep systems secure, reliable, and high‑performing.
• Work across servers, networks, cloud platforms, security, DNS, domains, and enterprise IT systems.
• Solve challenging technical issues and drive root‑cause analysis rather than just addressing symptoms.
• Be part of infrastructure upgrades, migrations, and projects that directly improve business efficiency.
• Work with modern IT security, backup, disaster recovery, and endpoint management practices.
• Get the opportunity to continuously improve IT processes while working closely with teams, management, and technology partners.

Each employee has a chance to see the impact of his work.You can make a real contribution to the success of the company.
Several activities are often organized all over the year, such as weeklysports sessions, team building events, monthly drink, and much more

A full‑time position
Attractive salary package.

Trainings

12 days / year, including
6 of your choice.

Sport Activity

Play any sport with colleagues,
the bill is covered.