Senior IT Infrastructure Specialist

Kredivo Group; Jakarta Pusat; On-site; IDR 320,000,000 - 540,000,000; Full time

Job summary

Kredivo Group is seeking a Senior IT Infrastructure Specialist Network to design, implement, and manage medium-to-large scale network infrastructure across multiple offices. This senior IC role emphasizes deep technical execution, reliability, and security while mentoring junior team members.

The ideal candidate will manage routing, switching, wireless, QoS, and network security measures, collaborate with security for audits, and provide technical RCA and reports.

Qualifications

• Bachelor's or Master's degree in IT, Computer Science, Engineering, or a related field.
• 5–7 years of experience managing medium to large scale office networks across multiple sites.
• Deep mastery of network stack, routing (BGP/OSPF), switching (VLAN/STP/LAG), wireless networking, and QoS.
• Experience configuring firewalls and implementing network security measures (firewall policies, IPsec/SSL VPN, IDS/IPS, segmentation, 802.1X/RADIUS).
• Hands-on experience with Cisco, UniFi, and Fortigate devices covering firewalls and network equipment.
• Ability to work independently and translate technical requirements into detailed implementations.
• Strong problem-solving, analytical, and report-writing skills including Cost-Benefit Analysis and RCA.
• Effective communication in English and Bahasa Indonesia.
• Willing to travel to support regional office sites (SE Asia preferred).

Responsibilities

• Design, implement, and maintain brand-agnostic network infrastructure (switches, firewalls, VPN gateways).
• Run daily office network operations: device administration, configuration, monitoring, incident management, documentation.
• Own technical responsibility for network components and configurations for reliability and security.
• Configure and optimize routing, switching, wireless, and QoS.
• Collaborate with security team to enforce network security measures and audits.
• Perform RCA on network incidents and produce technical reports with recommendations.
• Propose network design improvements to support growth and performance.
• Support development and maintenance of network monitoring and performance reporting platform.
• Serve as a mentor for junior team members in the network domain.
• Collaborate with peering teams to align technical initiatives.

Skills

Network design

Routing protocols (BGP/OSPF)

Switching (VLAN/STP/LAG)

Wireless networking

QoS management

Firewall configuration

VPN (IPsec/SSL)

Network security

Network monitoring (SNMP/NetFlow)

Cisco devices

UniFi devices

Fortigate devices

RCA

Cost-Benefit Analysis

Technical reporting

English communication

Bahasa Indonesia communication

Willingness to travel

Education

Bachelor's degree in IT/CS/Engineering

Tools

Cisco IOS

UniFi

Fortigate

Job description

We are seeking a Senior IT Infrastructure Specialist Network with strong expertise in designing, implementing, and managing medium-to-large-scale network infrastructure. This is a senior individual contributor role: the focus is on deep network technical execution, operational reliability, and security, while also serving as a technical reference and mentor for more junior team members.

You will be responsible for ensuring network connectivity is optimal, secure, and aligned with business and compliance requirements, for both internal and external connections across multiple office sites.

About The Job

1. Design, implement, and maintain brand agnostic network infrastructure including switches, firewalls, and VPN gateways to ensure optimal connectivity and security.
2. Run daily office network operations: network device administration & configuration, monitoring, incident management, and documentation.
3. Own the technical responsibility for network components and configurations, ensuring the reliability and security of both internal and external connections.
4. Configure and optimize routing protocols, switching, wireless networking, and QoS management.
5. Collaborate with the security team to enforce network security measures (e.g., IDS/IPS, RADIUS/802.1X, network segmentation) and support audits relevant to the network scope.
6. Perform Root Cause Analysis (RCA) on network incidents and produce technical reports with follow-up recommendations.
7. Proactively propose network design improvements to support business growth and performance.
8. Support the development and maintenance of the network monitoring and performance reporting platform.
9. Serve as a technical reference and mentor for more junior team members within the network domain.
   10. Collaborate with peering teams (Application, Identity, Operations) to align technical initiatives.

About you:

1. Bachelor's (S1) or Master's (S2) degree in IT, Computer Science, Engineering, or another science major.
2. Minimum 5-7 years of experience managing medium to large scale office networks, preferably involving multiple sites/locations.
3. Deep mastery of the common network stack, routing protocols (e.g., BGP, OSPF), switching (VLAN, STP, link aggregation), wireless networking, and QoS management, as well as network monitoring tools (e.g., SNMP, NetFlow).
4. Experience configuring firewalls and implementing other network security measures (e.g., firewall policies, IPsec/SSL VPN, IDS/IPS, network segmentation, RADIUS/802.1X).
5. Hands-on experience (configuration & operations) with Cisco, UniFi, and Fortigate devices covering both firewalls and network equipment (switches, access points, routers) from these vendors.
6. Ability to work independently and translate technical requirements into detailed implementation solutions.
7. Strong problem-solving, analytical, and report-writing skills, including Cost-Benefit Analysis and Root Cause Analysis.
8. Effective communication in English and Bahasa Indonesia, including with audiences from diverse cultural backgrounds.
9. Willingness to travel (preferably within Southeast Asia) to support the infrastructure development of regional office sites.

10. Able to collaborate effectively with stakeholders, in both project and day-to-day operational contexts.

11. Able to communicate and explain technical matters in non-technical language to non-technical users/stakeholders.

12. Able to build and maintain strong working relationships and communication with vendors to ensure project success.