Senior Infrastructure Engineer
Remote · Prague, Prague, Czechia or Czechia
Job Summary
Senior Infrastructure Engineer at CallMiner based in Prague, Czech Republic, focusing on reliability, security, and performance of customer-facing cloud infrastructure (Azure and/or AWS, OVH Cloud). Own SIP telephony integrations for deployments, design reliable call paths, diagnose complex telephony/connectivity issues, ensure low latency and high availability for real-time voice and conversational AI services, and lead incident response. Collaborates with Engineering, Delivery, and Customer Success; manages Docker/Kubernetes workloads; supports onboarding and go-lives; enforces security and compliance (ISO 27001, GDPR, SOC 2); maintains documentation and runbooks; requires 5+ years of related experience, Linux proficiency, public cloud experience, and strong troubleshooting skills. Czech and English required, with preferred Bachelor’s degree or equivalent experience.
Required Qualifications
- 5+ years of experience in System Administration, DevOps, VoIP/telephony engineering, or related infrastructure roles
- Bachelor's degree preferred in Computer Science, Information Technology, or related discipline, or equivalent practical experience
- Hands-on experience with SIP-based integrations, SIP trunking, call routing concepts, and real-world troubleshooting across networks and enterprise environments
- Strong Linux administration skills (Ubuntu/Debian/CentOS), including shell scripting (Bash) and scripting in Python or similar
- Hands-on experience with public cloud platforms (Azure and/or AWS), including compute, networking, storage, and identity services
- Practical experience with containerization (Docker) and orchestration (Kubernetes)
- Experience with monitoring, logging, and alerting tools and a structured approach to incident management
- Solid understanding of networking fundamentals (TCP/IP, DNS, VPN, firewalls, load balancing, NAT) and security best practices
- Strong troubleshooting and problem-solving skills with a proactive, ownership-driven mindset and direct customer impact
- Strong organizational skills, managing multiple priorities independently in a fast-paced, customer-facing environment
- Professional proficiency in Czech and English required
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