Alexander Petrenas
Chief Technology Officer | Infrastructure Architect | DevOps Leader
Remote | @anubioz | [email protected] | LinkedIn
Note: Majority of commercial work is proprietary/NDA.
Executive Summary
Strategic CTO and Senior Engineering Leader with over a decade of experience designing High Availability infrastructure, leading digital transformations, and aligning technology with business profitability. Expert in Bare Metal Automation, Immutable Infrastructure, and Network Engineering (BGP/ASN). Proven track record of scaling development teams, managing CapEx budgets, and eliminating downtime-related revenue losses. Deep technical mastery spanning Linux kernel tuning and ML/AI integration.
Professional Experience
Lead Infrastructure Architect / Acting Head of DevOps
Lead architect for infrastructure transformation, responsible for the stability of business-critical applications (HIS/RIS) and legacy system modernization.
- AI & ML Integration (2024-2025): Architected and deployed an on-premise Speech Analytics system using OpenAI Whisper and GPU acceleration. Integrated with Asterisk/PJSIP via Python FastAGI.
- Data Warehouse Architecture: Built a modern DWH using ClickHouse, Kafka, and Airflow. Reduced report generation time from hours to seconds and enabled real-time BI.
- Infrastructure Modernization: Led the upgrade of the datacenter backbone to 10Gbps (Fiber/SFP+). Migrated legacy storage to high-performance ZFS arrays and optimized VMware vSAN clusters for DICOM traffic.
- Strategic Stability: Achieved 99.998% uptime by implementing triple-redundancy internet (BGP/ASN) and automated failover scripts.
Chief Technology Officer (CTO)
Promoted from Lead Engineer to CTO to oversee technical strategy, team expansion, and project profitability.
- Team Leadership & Scaling: Scaled the engineering team from 4 to 7 developers. Established formal hiring processes and onboarding performance baselines.
- Resource Planning & Profitability: Managed estimation for fixed-price contracts. Ensured project profitability by precisely calculating developer-hours for enterprise clients.
Blockchain Developer & Engineer
- Developed smart contracts (Solidity) and automated trading bots (Python/ML).
- Engineered physical mining infrastructure (2.5 MW facility) within shipping containers.
Lead Developer & Engineer
- Architected a complete call-center infrastructure utilizing SIP.js and Asterisk.
- Reverse-engineered proprietary telecom firmware to unlock root access.
Technical Arsenal
Languages & Certifications
- English: C2 Proficient (EF SET Certified) | View Certificate
- Russian: Native Speaker