Astelia - Senior Cyber Security Engineer

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: 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.