Network Engineer (Fintech Services)

Role Summary

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.

Benefits

• A hybrid working model with flexibility — a schedule that helps you find the right balance between flexibility and team bonding, including work-from-abroad opportunities and a summer working model.
• A customizable FlexBenefits budget — Adjust your daily meal allowance, choose your health insurance package (and extend it to your spouse or children), and pick from additional benefits like fuel support or Trendyol shopping credits.
• Comprehensive wellbeing support — Take advantage of our extended health package, which includes annual mini health screenings, access to location-based in-house doctors, psychologist and dietitian support, and HPV vaccination coverage.
• Personalized training allowance and learning opportunities — Use your annual budget for any training or conference of your choice, explore our Learning Management System (LMS) anytime, and join in-person learning sessions offered throughout the year.
• Responsibility from day one — Take full ownership from the start in a culture where every voice is heard and valued.
• A diverse, international team — Collaborate with global peers across our offices in Berlin, Amsterdam, Dubai, and beyond, in a startup-spirited and collaborative environment.
• Opportunities to grow with the best — Tackle meaningful challenges, develop through hands-on experience, and grow with the support of expert guidance and global mentoring.
• Meaningful connections beyond tasks — Be part of team rituals, events, and social activities that help us stay connected and inspired.

Take the Next Step

• If this role excites you, apply now and let’s take the next step together.
• Want to get to know the team better first? Explore our Career Website , LinkedIn , or YouTube to learn more about #LifeatTrendyol and how we work.