Network Infrastructure - Can Join Immediately

PT. SIGMA GLOBAL TEKNOLOGI (SIGMATECH); Jakarta Utara; On-site; IDR 156,240,000 - 223,200,000; Full time

Benefits offered by this job

Medical

Miscellaneous allowance

Attractive Salary

THR

BPJS

Annual & Sick Leaves

Job summary

PT. SIGMA GLOBAL TEKNOLOGI (SIGMATECH) is seeking a Network Infrastructure professional to join immediately. The role focuses on maintaining a secure, highly available network and supporting enterprise environments with hands‑on troubleshooting of L2/L3 devices, VPNs, and load balancers.

The ideal candidate has strong skills in VLAN/STP/OSPF/BGP and firewall management, with experience using tools like Wireshark to analyze traffic and ensure optimal performance.

Qualifications

• 2–5 years experience in Network Administration / Network Operations.
• Experience supporting enterprise production network environments.

Responsibilities

• Maintain a secure and highly available network environment.
• Operate and troubleshoot L2/L3 devices, load balancers, and DCI connectivity.
• Manage firewall rules and VPN connectivity.
• Configure and manage traffic distribution via load balancers (F5 LTM/GTM).
• Monitor network performance and perform packet analysis for issue resolution.

Skills

Network Administration

Network Operations

L2/L3 networking

VLAN

STP

OSPF

BGP

Firewall configuration

VPN connectivity

Load balancer configuration

Troubleshooting

Wireshark

Network performance monitoring

Tools

F5 LTM/GTM or equivalent

Job description

Network Infrastructure - Can Join Immediately

Experience

• 2–5 years experience in Network Administration / Network Operations
• Experience supporting enterprise production network environments

Technical Qualification

• Strong understanding of:
• L2/L3 networking (VLAN, STP, OSPF, BGP – conceptual to practical level)
• Firewall configuration and security policies
• VPN and remote connectivity solutions

Hands-on experience with

• Switches and routers troubleshooting
• Load balancer configuration (F5 LTM/GTM or equivalent)
• Firewall rule management and NAT policy
• DCI and inter-site connectivity troubleshooting
• Packet capture and traffic analysis (e.g., Wireshark)
• Network performance monitoring tools

Familiar with

• Network security best practices
• ITIL Incident, Problem, and Change Management
• High availability and redundancy design concept

Working Hours

• 8x5 & as per needed
• On-Call Support: Standby support for Major Incidents (P1 & P2) outside business hours
• Escalation Role: Acts as L2 escalation point from Service Desk (L1)

Responsibilities

• Maintain a secure and highly available network environment
• Operate and troubleshoot L2/L3 devices, load balancers, and DCI connectivity
• Manage firewall rules and VPN connectivity
• Configure and manage traffic distribution via load balancers (F5 LTM/GTM)
• Monitor network performance and perform packet analysis for issue resolution

Perks and benefits

• Medical
• Miscellaneous allowance
• Attractive Salary
• THR
• BPJS
• Annual & Sick Leaves

SIGMATECH is the enterprise technology partner of choice for software development, delivering a broad range of web, mobile, and desktop controls coupled with a service-oriented approach throughout the entire application life cycle.

SIGMATECH consists of highly skilled developers specializing in agile development methodology, focusing on Mobile & Web Solution, IT Services and business enterprise, utilizing modern programming languages as our platform. SIGMATECH has established itself as the trusted partner for use in mission-critical applications and service clientele from global insurance companies, government agencies and large consumer product manufacturers.

Our Vision :

To be the most reputable and dependable growth solution partner both for IT Professional Talents and Client's Businesses worldwide

Our Mission :

To be the most reputable and dependable growth solution partner both for IT Professional Talents and Client's Businesses worldwide

To be the most reputable and dependable growth solution partner both for IT Professional Talents and Client's Businesses worldwide

SIGMATECH is the enterprise technology partner of choice for software development, delivering a broad range of web, mobile, and desktop controls coupled with a service-oriented approach throughout the entire application life cycle.

SIGMATECH consists of highly skilled developers specializing in agile development methodology, focusing on Mobile & Web Solution, IT Services and business enterprise, utilizing modern programming languages as our platform. SIGMATECH has established itself as the trusted partner for use in mission-critical applications and service clientele from global insurance companies, government agencies and large consumer product manufacturers.

Our Vision :

To be the most reputable and dependable growth solution partner both for IT Professional Talents and Client's Businesses worldwide

Our Mission :

To be the most reputable and dependable growth solution partner both for IT Professional Talents and Client's Businesses worldwide

To be the most reputable and dependable growth solution partner both for IT Professional Talents and Client's Businesses worldwide