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Senior Cyber Security Engineer

Astelia Tel-Aviv, Tel-Aviv District, Israel

Yesterday
security Senior (5-10 yrs) Full-time Israel
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About the role

Design and build core product capabilities, including network-aware security logic, attack-path modeling, and high-performance pipelines for large volumes of security and infrastructure data. Own production systems, including their observability, debugging, performance, and reliability.

What they look for

Cybersecurity Engineering Network Security Firewalls Routing Network Address Translation Access Control Lists Network Segmentation Threat Modeling Attack-Path Modeling Backend Engineering Production Systems Ownership Cloud Security Data Ingestion and Normalization Distributed Systems Kubernetes Observability

Requirements

Requires at least five years of hands-on cybersecurity or security-focused backend engineering experience, strong enterprise networking knowledge, and foundations in threat modeling and security engineering. Candidates should be able to build production-grade systems, take ownership of them in production, and communicate effectively in a fast-paced startup environment.

Full description

About Astelia

Astelia helps security teams dramatically reduce the volume of incidents generated by vulnerability management tools. We do this by building a deep, contextual understanding of our customers’ networks - turning noise into signal and enabling security teams to focus on what truly matters. We’re a small, fast-moving startup with great people who care about impact, craftsmanship, and each other.

About the Role

You’ll be part of a small, elite founding engineering team solving real-world security problems that sit at the intersection of network security, cloud infrastructure, and large-scale data systems.

This is a hands-on role where you’ll design and build core parts of the product - from network-aware security logic and attack-path modeling, to high-performance pipelines that process massive volumes of security and infrastructure data.

If you’re excited about deep security challenges, love building real systems end-to-end, and want massive impact in an early-stage team - we’d love to meet you.

Requirements

Requirements

Qualifications

  • Experience: 5+ years of hands-on experience in cybersecurity engineering or security-focused backend engineering.
  • Strong Networking Knowledge: Deep understanding of:
  • Firewalls, routing, NAT, ACLs, subnets
  • Common enterprise network architectures
  • Network segmentation and exposure concepts
  • Security Engineering: Strong foundations in:
  • Threat modeling
  • Attack paths / exposure chains
  • Security best practices for modern on prem and cloud systems
  • Backend / Systems Engineering: Ability to build production-grade systems with clean architecture and strong engineering standards.
  • Production Ownership: Comfortable owning systems in production - observability, debugging, performance, and reliability.
  • Team Mindset: Strong communication skills, high ownership, and the ability to thrive in a fast-paced, “build-first” startup environment.

Advantage

  • Experience with Vulnerability Management, CVEs, scanners, asset inventory, risk scoring, and remediation workflows.
  • Experience with Exposure Management concepts (attack surface, reachable assets, blast radius, privilege paths).
  • Experience with cloud security.
  • Experience with high-scale data ingestion and normalization pipelines.
  • Familiarity with graph-based security modeling (attack graphs, exposure graphs, reachability analysis).
  • Experience with high-performance data systems (ClickHouse / Postgres / graph databases).
  • Strong debugging skills and ability to optimize complex distributed systems.
  • Cloud & Kubernetes: Experience working with cloud-native systems and Kubernetes environments.

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