Senior Infrastructure Engineer

This is a fully remote position, open to applicants in Czechia.

📋 Description

• Oversee, monitor, and maintain customer-oriented cloud infrastructure (Azure and/or AWS, OVH Cloud) that supports CallMiner's intelligent CX automation platform.

• Manage SIP telephony integrations for client deployments: establish and maintain connectivity through SIP trunking providers, direct trunks, and clients' enterprise telephony infrastructure (PBX, SBC, CCaaS platforms).

• Design dependable call paths that balance latency, audio quality, reliability, and security constraints.

• Identify and resolve intricate telephony and connectivity issues across customer environments, including call routing, NAT traversal, codec compatibility, RTP/audio quality, firewall, and QoS configuration.

• Ensure the high availability, low latency, and resilience of real-time voice and conversational AI services.

• Assist with customer onboarding and go-lives in collaboration with Delivery and Professional Services teams, from proof-of-concept to production.

• Oversee containerized workloads and orchestration platforms (Docker, Kubernetes).

• Lead incident response and root cause analysis for infrastructure, telephony, and connectivity challenges.

• Carry out routine system administration tasks such as patching, backups, disaster recovery testing, user and access management, and capacity planning.

• Strengthen systems and implement security best practices, ensuring compliance with requirements (e.g., ISO 27001, GDPR, SOC 2) and audit processes.

• Manage databases, networking, DNS, load balancing, certificates, and VPN/firewall settings.

• Collaborate with Engineering teams to convert recurring customer integration issues into platform and process enhancements.

• Develop and maintain clear technical documentation, runbooks, and integration guides for customer-facing infrastructure.

⛳️ Requirements

• A minimum of 5 years of experience in System Administration, DevOps, VoIP/telephony engineering, or comparable infrastructure roles.

• A Bachelor's degree is preferred in Computer Science, Information Technology, or a related field, or equivalent practical experience.

• Hands-on experience with SIP-based integrations, SIP trunking, call routing concepts, and real-world troubleshooting in networks and enterprise environments.

• Strong Linux administration skills (Ubuntu/Debian/CentOS), including shell scripting (Bash) and scripting in Python or a similar language.

• Practical experience with public cloud platforms (Azure and/or AWS), encompassing compute, networking, storage, and identity services.

• Experience with containerization (Docker) and orchestration (Kubernetes).

• Familiarity with monitoring, logging, and alerting tools, along with a structured approach to incident management.

• A solid understanding of networking fundamentals (TCP/IP, DNS, VPN, firewalls, load balancing, NAT) and security best practices.

• Exceptional troubleshooting and problem-solving skills with a proactive, ownership-driven mentality that directly impacts customers.

• Strong organizational abilities, managing multiple priorities independently in a dynamic, customer-facing environment.

• Professional proficiency in both Czech and English is required.

🏝️ Benefits

• Maternity and Paternity Leave

• Ample Holidays

• Fitness and Health Reimbursement

• Tuition Reimbursement