Remote Senior Security Engineer: Network & Zero Trust

Sezzle; Turkey; Remote; TRY 2,758,000 - 5,241,000; Full time

Job summary

Sezzle is seeking a hands‑on Senior Security Engineer, Network & Zero Trust to own the network pillar of Sezzle’s zero‑trust program across Kubernetes clusters and AWS accounts. You will design default‑deny segmentation, implement identity‑bound, per‑application access, and produce telemetry for SIEM detections while collaborating with security, platform, and IAM teams.

You will also own network telemetry, cluster admission control, and drift management, writing policies and tooling in

Qualifications

• 6+ years of experience in security, network, platform, or infrastructure engineering.
• Deep Kubernetes networking knowledge and experience rolling segmentation on live clusters.
• Strong AWS networking with VPCs, subnets, security groups, and peering.

Responsibilities

• Own east‑west segmentation across Kubernetes clusters and derive network policies.
• Deliver identity‑aware transport with mutual TLS (mTLS) for service‑to‑service connections.
• Maintain a live network map and reconcile it from cloud APIs and logs.

Skills

Kubernetes networking

mTLS

Infrastructure as code

Go

Python

Typescript

Git

CI/CD

Threat modeling

Tools

Terraform

Helm

Gitlab

Istio

Job description

Sezzle is seeking a hands‑on Senior Security Engineer, Network & Zero Trust to own the network pillar of Sezzle’s zero‑trust program across Kubernetes clusters and AWS accounts. You will design default‑deny segmentation, implement identity‑bound, per‑application access, and produce telemetry for SIEM detections while collaborating with security, platform, and IAM teams.

You will also own network telemetry, cluster admission control, and drift management, writing policies and tooling in