Senior II Security Engineer - Platform

Meet the team!

The Security team partners across the company to help Preply grow safely and sustainably. We are responsible for platform security, application and product security, security operations, and incident response. We work closely with SRE, Data teams, Engineering teams, and our GRC function to make security practical, measurable, and scalable.

We work in small teams, which means you’ll have high ownership, real influence on technical decisions, and the opportunity to drive meaningful improvements across the company. We promote self‑direction, strong collaboration, and a culture where trust and clear communication matter.

• Own platform security across AWS, Kubernetes, and GCP, with a strong focus on detection, alerting, and incident response readiness

• Lead key platform security initiatives end‑to‑end, from problem definition through rollout and iteration

• Act as a strong technical voice in defining how platform security is designed, implemented, and operated at Preply

• Evolve our monitoring from “we have a SIEM” to a detection and response capability that is effective, trusted, and actionable

• Work hands‑on with our current tooling, including Datadog as our SIEM, Okta as our primary IdP, and a range of SaaS platforms

• Drive cross‑functional platform security initiatives from problem definition to production rollout, partnering with SRE, Data, Engineering, and GRC

• Strengthen cloud and platform security across AWS and Kubernetes, with expanding scope in GCP, through practical guardrails, secure patterns, and automation

• Improve the robustness of access to internal infrastructure, including identity, privileged access, and auditability

• Improve security of Kubernetes deployments, including cluster and workload security, policy enforcement, and secure workload identity patterns

• Mature detection and response capability using Datadog

• Improve log coverage and data quality (cloud, Kubernetes, CI/CD, identity, and key SaaS)

• Build and tune actionable detections with clear severity, ownership, and expected frequency

• Reduce noise through correlation, deduplication, enrichment, and continuous tuning

• Establish repeatable triage workflows and clear escalation paths, being part of the Security on‑call rotations

• Create investigation playbooks and runbooks so alerts can be handled consistently and quickly

• Partner with Data teams to improve monitoring for suspicious activity and sensitive access patterns, with an emphasis on practical, high‑signal alerting

• Improve secrets management and reduce exposure risk across CI/CD and runtime

• Build security automation that makes the secure path the easy path for engineers

• Strong experience securing cloud and platform environments, especially AWS and Kubernetes, and the ability to extend that security approach into GCP

• Hands‑on experience driving and delivering technical security initiatives end‑to‑end in production environments

• Strong understanding of the software development lifecycle, and comfort working with CI/CD and infrastructure as code

• Practical experience improving identity and access security, with strong familiarity with Okta event monitoring and identity‑focused detection patterns

• Experience building or maturing security operations capability, especially turning SIEM inputs into reliable operational outcomes (triage, runbooks, tuning, and measurable improvement)

• Experience improving logging coverage and signal quality, and building detections that are actionable rather than noisy (experience with Datadog SIEM is a plus)

• Strong collaboration skills and the ability to influence decisions across SRE, Data, Engineering, and GRC

• Business‑oriented mindset and comfort making cost‑benefit tradeoffs

• Strong communication skills. Minimum C1 English level.

• Willingness to participate in on‑call rotations and partner effectively with SRE during incidents.

• Terraform and infrastructure as code at scale

• Jenkins hardening and CI/CD supply chain security controls

• Cloudflare security controls (WAF, bot mitigation, edge protections)

• Scripting or programming for automation and tooling

• Incident response experience in cloud‑native environments (AWS and…