Network Engineer – Vas Infrastructure

Overview

DLP is seeking a skilled Network Engineer to design, manage, and maintain the network infrastructure that powers our Value-Added Services (VAS) platforms. This ideal candidate will ensure high availability, low latency, and secure connectivity across all our core systems, including SMSC, USSD, voice/SIP, short codes, and API-driven services.

This role requires strong expertise in enterprise networking, telecom-grade infrastructure, and the ability to support mission-critical, high-traffic environments.

Key Responsibilities

1. Network Design, Deployment & Management

●    Design, configure, and maintain LAN/WAN, MPLS, VPN, and interconnects for VAS platforms.

●    Deploy and manage network devices: routers, switches, firewalls, load balancers, wireless appliances, etc.

●    Implement network segmentation, VLANs, QoS policies, and routing strategies for optimal performance.

●    Manage IP addressing, DNS, DHCP, NAT, SNAT/DNAT, routing tables, and BGP/OSPF configurations.

2. Telecom & VAS Infrastructure Support

●    Provide network connectivity and routing for platforms such as SMSC, USSD, IVR, MMSC, PRS, VMS, Short Codes, and SIP-based voice services.

●    Monitor and optimize network paths for SMPP, HTTP/REST APIs, SIP signaling, RTP media, and other VAS protocols.

●    Troubleshoot interconnect link issues between MNOs, aggregators, and internal platforms.

3. Network Security & Compliance

●    Implement and manage firewall rules, IPS/IDS policies, VPN tunnels, and security hardening.

●    Conduct regular vulnerability assessments and security audits.

●    Ensure compliance with regulatory and telecom security requirements (NCA, ISO, PCI where applicable).

4. Monitoring, Performance & Incident Management

●    Set up monitoring dashboards (Grafana, Zabbix, Prometheus, SolarWinds, etc.) for proactive detection of network anomalies.

●    Track network uptime, latency, throughput, packet loss, and jitter metrics.

●    Respond to incidents, perform root-cause analysis, and document permanent fixes.

●    Improve reliability for critical VAS connections with redundancy, failover, and HA implementations.

5. Collaboration & Documentation

●    Work closely with DevOps, TechOps, and Product teams to support deployments and feature releases.

●    Manage vendor relations with ISPs, fiber providers, and technology partners.

●    Maintain up-to-date network diagrams, configuration documentation, and SOPs.

Required Skills & Qualifications

Technical Skills

●    Strong knowledge of TCP/IP, VLANs, STP, QoS, OSPF, BGP, MPLS, VPNs, DNS, DHCP.

●    Experience with network security tools: firewalls (Fortinet, Palo Alto, Cisco ASA), ACLs, IDS/IPS.

●    Hands-on with Cisco, Juniper, Mikrotik, Ubiquiti, Huawei, or HP networking devices.

●    Understanding of telecom/VAS protocols such as:

○ SMPP, SS7/SIGTRAN (advantageous), SIP, RTP, HTTP/S APIs

○    Diameter, GTP or CAMEL (bonus)

●    Familiarity with Linux networking (iptables, netplan, routing tables).

●    Knowledge of SDN/NFV concepts is a plus.

Soft Skills

●    Excellent troubleshooting and analytical skills.

●    Strong documentation, communication, and cross-team collaboration abilities.

●    Ability to work in fast-paced, high-availability telecom environments.

●    Strong sense of ownership and reliability.

Experience

●    3–7 years of hands-on network engineering experience (telecom or VAS industry preferred).

●    Proven experience supporting mission-critical or high-traffic systems.

●    Certifications (bonus): CCNA, CCNP, JNCIA, JNCIS, Fortinet NSE, MikroTik MTCRE/MTCINE.

Key Performance Indicators (KPIs)

●    Network Uptime (≥ 99.9%)

●    Incident Response & Resolution Time

●    Latency / Jitter performance on SIP & SMPP routes

●    Success rate of VAS transactions

●    Security posture and audit outcomes

●    Documentation completeness and accuracy

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