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CallMiner

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Senior Infrastructure Engineer

Infrastructure EngineerInfrastructure EngineerFull TimeRemoteSeniorTeam 201-500H1B No SponsorCompany SiteLinkedIn

Location

Czechia

Posted

3 days ago

Salary

0

Seniority

Senior

Job Description

Senior Infrastructure Engineer

CallMiner

• Administer, monitor, and maintain customer-facing cloud infrastructure (Azure and/or AWS, OVH Cloud) supporting CallMiner's intelligent CX automation platform • Own SIP telephony integrations for customer deployments: configure and maintain connectivity via SIP trunking providers, direct trunks, and customers' enterprise telephony infrastructure (PBX, SBC, CCaaS platforms) • Design reliable call paths balancing latency, audio quality, reliability, and security constraints • Diagnose and resolve complex telephony and connectivity issues across customer environments, including call routing, NAT traversal, codec compatibility, RTP/audio quality, firewall and QoS configuration • Ensure high availability, low latency, and resilience of real-time voice and conversational AI services • Support customer onboarding and go-lives in coordination with Delivery and Professional Services teams, from proof-of-concept through production • Manage containerized workloads and orchestration platforms (Docker, Kubernetes) • Lead incident response and root cause analysis for infrastructure, telephony, and connectivity issues • Perform routine system administration tasks including patching, backups, disaster recovery testing, user and access management, and capacity planning • Harden systems and enforce security best practices, supporting compliance requirements (e.g., ISO 27001, GDPR, SOC 2) and audit activities • Manage databases, networking, DNS, load balancing, certificates, and VPN/firewall configurations • Collaborate with Engineering teams to translate recurring customer integration challenges into platform and process improvements • Create and maintain clear technical documentation, runbooks, and integration guides for customer-facing infrastructure

Job Requirements

  • 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.

Benefits

  • Maternity and Paternity Leave
  • Ample Holidays
  • Fitness and Health Reimbursement
  • Tuition Reimbursement

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