Join Kiefer Tech: Pioneer Security for Sovereign AI
About Kiefer Tech
At Kiefer Tech, the technology arm of Kiefer, we’re shaping the future of AI and robotics across Greece and the EU. Drawing on over two decades of engineering excellence from the Green Energy sector, we deliver cutting-edge AI, robotics, and enterprise solutions. Our mission is clear: build sovereign AI infrastructure that keeps data within EU borders, fiercely protects privacy, and delivers tangible business impact. Guided by our core values of innovation, quality, and long-term client partnerships, we create enterprise-grade AI infrastructure, develop the first true Greek Large Language Models, and engineer intelligent automation solutions that empower organizations to thrive.
Our strategic collaboration with NVIDIA is forging an ecosystem where sustainable infrastructure meets world-class AI technology. This partnership fosters innovation, strengthens Greece’s technological sovereignty, and generates real-world impact across diverse industries. Join us and help architect the AI-powered world of tomorrow.
About the Role: Senior Security Engineer, Sophea Platform
Are you ready to be the architect of security from the ground up? We're seeking a visionary Senior Security Engineer to be our very first dedicated security hire for the groundbreaking Sophea platform. This isn't a compliance checklist role; it's an opportunity to establish security as a fundamental engineering capability. You will be instrumental in hardening our cloud infrastructure, securing novel AI-specific attack surfaces, embedding automated security seamlessly into our development lifecycle, and empowering our engineering teams to ship innovative solutions with unwavering confidence. This is where you define the standards, build the future, and leave your mark.
Your Mission (What You Will Do)
Lead comprehensive security assessments and forge a prioritized remediation roadmap across our critical infrastructure and services.
Fortify our AWS and Kubernetes environments: design and implement robust IAM policies, network segmentation, workload isolation strategies, and advanced secrets management.
Secure cutting-edge AI-specific attack surfaces, developing defenses against prompt injection, ensuring PII handling integrity in LLM pipelines, and preventing model interaction data leakage.
Embed state-of-the-art automated security directly into our CI/CD pipelines, covering dependency scanning, container image scanning, static/dynamic code analysis, and proactive secrets detection.
Architect secure-by-default patterns for all service communication, authentication mechanisms, and sensitive data handling across our platforms.
Build robust incident response capabilities from scratch, including advanced detection, intelligent alerting, streamlined response workflows, and thorough post-incident review processes.
Act as a strategic security partner to engineering teams, improving our overall security posture without introducing unnecessary friction or becoming a bottleneck.
What You Will Bring (Required Skills & Experience)
6-10+ years of professional security engineering experience in demanding production environments.
Deep, hands-on expertise in cloud security (AWS strongly preferred) coupled with profound knowledge of container and Kubernetes security.
Strong application security skills, including securing complex APIs, microservices architectures, authentication flows, and data pipelines.
Extensive experience implementing and managing automated security tooling within CI/CD (SAST, DAST, dependency scanning, container scanning).
An offensive security mindset: the ability to think like an attacker, proactively identify non-obvious vulnerabilities, and rigorously validate defensive measures.
A proven track record of building or significantly maturing security programs, not just operating existing ones.
Bonus Points (Nice to Have)
Direct experience with AI/LLM security challenges (prompt injection, model security, PII in AI pipelines).
Active participation in CTFs, a verifiable bug bounty track record, or formal red team experience.
Offensive security certifications (e.g., OSCP, OSWE, CRTP).
Expertise in incident response and digital forensics.
Hands-on experience with SOC2/ISO27001 compliance implementation (beyond mere audit management).
Why Kiefer Tech? Your Impact, Your Growth
Exceptional Compensation: Enjoy a compensation package positioned above the typical backend band for the Greek/EU market.
Flexible Work: Work fully remote within the EU, or choose a hybrid model from our Athens office.
Unparalleled Ownership: As our first dedicated security hire, you will define and implement our security standards from day one, shaping the future of our platforms.
AI-Native Challenges: Tackle real, complex security challenges at the cutting edge intersection of LLMs, enterprise data, and distributed infrastructure.
Accelerated Growth: Benefit from a dedicated budget for conferences, specialized courses, and certifications, with a clear path to Security Lead or Head of Security.
Empowering Culture: Thrive in an engineering-first environment characterized by low meetings, high autonomy, and an async-first approach to collaboration.