Network Security Engineer

Ready to learn more about us?
We were founded in 2010 with a dynamic and agile start-up spirit. The trust of around 30 million customers and 250,000 sellers has made us the first decacorn in Turkey. Our success is backed by renowned investors such as Alibaba, General Atlantic, Softbank, Princeville Capital and several sovereign wealth funds. In 2022, we opened our first dedicated international office in Berlin and expanded to Amsterdam, Luxembourg and London. And that's just the beginning!
Tech at the root
We believe that technology is the driver and e-commerce is the outcome. Thanks to the dedication of our team, we have become one of the top 5 e-commerce companies in EMEA and one of the fastest growing worldwide. We currently deliver over 1.5 million parcels daily to 27 countries.
Growth is in our DNA
As a young and dynamic company, we are constantly growing and expanding. With Trendyol Tech, one of the leading R&D centres, Trendyol Express, the fastest growing delivery network, Dolap, the largest platform for second-hand goods, and Trendyol Go, our instant food and grocery delivery service, we are gearing up to become the world's leading e-commerce platform.
Focused on positive impact
Our vision goes beyond business success. We strive to make a sustainable and positive impact on our customers, business partners, and society. By digitizing merchants and SMEs, helping businesses grow, and promoting women's economic empowerment, we are dedicated to creating a better future.
ABOUT THE TEAM
If you are a techie, you belong in our Technology Team that builds scalable, high-performance platforms for our customers using up-to-date and efficient technologies.
We are all working with the same purpose: To create a positive impact in our ecosystem by enabling commerce through technology.

Your Main Responsibilities

• Designing, managing and troubleshooting of network security technologies, including but not limited to intrusion prevention system (IPS), web application firewall (WAF), SSL visibility products (SSLi), DDoS protection solutions according to best practices
• Managing and providing engineering support to the Network Detection and Response (NDR) and network security modules of Endpoint Deteciton Response (EDR) solutions in infrastructure of entire Trendyol and its subsidiaries
• Contributing to the continuous improvement of the security level of the existing network infrastructure by collaborating with other infrastructure teams.
• Keeping up to date with industry best practices and emerging technologies related to network security infrastructure
• Researching, developing and implementing new technologies suitable for the network security infrastructure
• Ensuring that daily operations are facilitated through automation

Qualities We're Looking For

• Minimum of 5 years hands on experience as a Network Security Engineer.
• Previously owned in designing, implementing, and maintaining network security operations
• Having knowledge on local and wide area network protocols such as dynamic routing protocols, PBR, Vlan, ECMP etc...
• Solid understanding of OSI, TCP/IP models
• Familiarity with Http protocol, knowledge about attack vectors and defense methods
• Familiarity with encryption algorithms, cryptographic protocols, authentication protocols and secure communication practices.
• Having knowledge on cloud networking concepts
• Proficiency in scripting languages (e.g., Python, Bash) for automation and integration purposes.
• Excellent communication and interpersonal skills, with the ability to collaborate with cross-functional teams and stakeholders.
• Good command of written and spoken English
• Experience on IAC tools is a plus
• Having knowledge on container or virtualization platforms is a plus
• Relevant certifications are plus