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Trendyol

Posted 1 month ago

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Network Engineer (Fintech Services)

IstanbulHybridFull-time

AI Summary

Designs, deploys, and maintains network, firewall, and load-balancer infrastructure for a fintech platform, ensuring high availability, low latency, PCI-DSS compliance, and security for high-volume financial transactions.

About this role

ABOUT THE TEAM

We’re shaping the future of financial technology at Trendyol.
As Trendyol’s technology teams, we’re not only building for today we’re designing the financial experiences of tomorrow. From payment infrastructure and digital wallets to smart credit systems and personalized financial services, we create solutions that empower millions of users across our ecosystem.
With Trendyol Pay, we enable fast, secure, and seamless payment journeys. Through Trendyol Finance, we develop inclusive and accessible products that simplify financial decisions.

We are united by a shared purpose:To create a positive impact in our ecosystem by enabling commerce through technology

About the Role

As a Network Engineer at Trendyol, you will be responsible for strengthening our dynamic fintech infrastructure and ensuring our network and security architecture operates with maximum uptime, robust security, and high performance:
  • Responsible for the deployment, configuration, and end-to-end management of the company's network, firewall, and load balancer infrastructure.
  • Maintain a 7/24 high-availability, low-latency, and highly secure environment (PCI-DSS compliant) capable of handling high-volume financial transactions.
  • Optimize application traffic using load balancing configurations and design redundant, high-availability (HA) architectures.
  • Rapidly respond to network issues and security incidents, perform root cause analyses (RCA), and proactively harden the infrastructure against emerging threats.

    • Qualities We Are Looking For

  • Deep theoretical and practical foundation in switching, routing, TCP/IP protocols, VPNs, VLANs, and dynamic routing protocols (BGP, OSPF, etc.)
  • Hands-on experience with enterprise-grade firewalls, rule management, NAT, IPS/IDS, and security policy design.
  • Experience in L4/L7 load balancing
  • Prior experience in fintech, banking, or managing high-traffic, mission-critical environments is a plus.
  • Proven ability to diagnose and resolve complex network and security issues efficiently.

    • Skills

    BGPFirewallHigh Availability ArchitectureIPS/IDSL4/L7 Load BalancingLoad BalancingNATOSPFPCI-DSSRoot-cause AnalysisTCP/IPVLANVPN

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