Expert Network / VoIP

Disclaimer:

As part of the transition following the sale by Finastra of the Teciem business, Finastra is supporting Teciem on a temporary basis by managing the end‑to‑end recruitment process for this position, including advertising, candidate outreach, interviews and selection. While certain points of contact in the hiring process will be Finastra staff, the successful candidate will be employed within the Teciem business and will carry out their role solely for Teciem.




The Work We Do

Teciem designs, builds, and delivers treasury and capital markets software solutions for financial institutions worldwide. We serve banks of every size and geography, offering the right setup for the right need.

Our solutions are designed to replace multiple disconnected systems with one complete, front-to-back platform, helping customers to capture trading and business opportunities quickly, clearly and with control. We cover the entire trading lifecycle, ensuring that everything - from execution to position keeping, to risk management – runs smoothly.

With decades of experience and one of the largest, most diverse client bases in the industry, we turn deep industry knowledge into software that covers most asset classes, meets complex real-world treasury and capital market's needs, and adapts as markets evolve.  




What will you contribute?

As a Network Engineer, you will be responsible for the availability, performance, and security of the company's global network infrastructure. A true technical expert in networking and telephony, you will support the Infrastructure, Security, and Support teams in implementing a reliable and secure network, perfectly aligned with the company's needs.

Key contributions include:

• Maintenance and optimization of LAN/WAN network environments and data centers.
• Management of Microsoft Teams telephony, SBC integration, and voice routing.
• Administration of Cisco and Fortinet equipment, including firewall security and vulnerability remediation.
• Monitoring telecom operators and network services (WAN, Internet, SIP).
• Support for hybrid and cloud infrastructures, including contributing to the design and operation of Azure networks.
• Level 2/3 expert support for network performance, connectivity, and telephony issues.

Responsibilities & Deliverables:
 

LAN/WAN & Datacenter Networking

• Administer, monitor, and optimize LAN and WAN infrastructures: switching, routing, VLANs, link management.
• Operate datacenter networks ensuring high availability, segmentation, and performance.
• Implement and maintain security policies (ACLs, segmentation, routing/security rules).
• Diagnose and resolve network performance or connectivity issues.
• Participate in network evolution projects: hardware refresh, SD WAN, new sites, and capacity improvements.

Microsoft Teams Telephony

• Manage Teams Telephony: call routing, SBC configuration, SIP trunking, number assignment.
• Monitor call quality and troubleshoot QoS and voice related issues.
• Coordinate with telecom operators for SIP services, number management, and incident resolution.

Cisco & Fortinet Administration

• Administer Fortinet firewalls (FortiGate): policies, NAT, VPN IPSec/SSL, security profiles.
• Configure and maintain Cisco switches/routers: IOS upgrades, security hardening, troubleshooting.
• Conduct vulnerability mitigation actions and follow remediation plans.
• Monitor logs, alerts, and network flows via supervision platforms.
   

Telecom Operator Management

• Manage relationships with telecom providers (Internet, WAN/MPLS/SD WAN, SIP).
• Follow up on incident tickets, SLAs, escalations, and service delivery.
• Support technical discussions and planning for network changes or upgrades.

Cloud Networking

• Contribute to cloud network design and operations:
  • VNet, Subnets, VNet Peering
  • NSG/ASG
  • VPN Gateway, Site-to-Site VPN, ExpressRoute
  • Azure Firewall & routing (UDR)
• Collaborate with cloud teams on hybrid environments, interconnections, and security hardening.

Documentation & Governance

• Produce technical documentation: network diagrams, configuration guides, procedures, runbooks.
• Maintain inventories and CMDB accuracy.
• Contribute to network standards, best practices, and continuous improvement initiatives.

Expected Deliverables

• Updated network configuration documentation and diagrams.
• Firewall policies, VPN configurations, and security rule updates.
• Troubleshooting reports, RCA (root cause analysis), and incident documentation.
• Monitoring dashboards and operational performance reports..
   

Required Experience:

Technical Experience

• Minimum 4 years of hands-on experience in LAN/WAN network administration.
• Strong expertise with Cisco and Fortinet switching/routing (VLANS, STP, OSPF, BGP).
• Practical experience with Fortinet (FortiGate) firewalls: configuration, policies, VPN.
• Practical experience with Forti Manager
• Solid operational experience with Microsoft Teams Telephony (SBC, SIP, routing, QoS).
• Experience managing datacenter network infrastructures.
• Experience with telecom operators (WAN circuits, fiber, SIP trunks, SLAs).
• Knowledge of network vulnerability management and remediation practices.
• Good understanding of Azure networking: VNet, NSG, VPN, ExpressRoute, UDR.
• Experience using network monitoring tools (PRTG, SolarWinds, etc.).
   

Soft Skills

• Strong diagnostic and problem-solving skills.
• Ability to work independently while collaborating with cross functional teams.
• Clear communication with both technical and non-technical audiences.
• High level of rigor, organization, and attention to detail.
• Customer oriented mindset and continuous improvement approach.
• Ability to manage multiple priorities effectively

#LI-Hybrid




Diverse Minds, Shared Ambition

At Teciem, we believe that our strength comes from the diversity of our people. Different perspectives, backgrounds, and experiences fuel our innovation and help us build solutions that truly make a difference in the world of financial technology.

We’re committed to creating a workplace where everyone feels respected, heard, and empowered to grow. Here, you can bring your whole self to work, contribute your unique ideas, and be part of a team driven by shared ambition.

We welcome talent from all walks of life and encourage applications from individuals of all genders, races, ages, abilities, identities, and beliefs. Together, we’re shaping a culture where diversity isn’t just celebrated — it’s essential to our success.