Daniel N.

Senior Linux Systems Administrator with 20 years of experience delivering robust infrastructure solutions across multiple environments. I specialize in designing, implementing, and maintaining critical systems with a focus on reliability, security, and performance optimization. Core Expertise Load Balancing Solutions: Expert implementation of HTTP load balancing with Apache (including advanced caching mechanisms) and HTTP/TCP load balancing with HAProxy (featuring complex access control lists) Security Implementation: Automated SSL/TLS certificate management with seamless setup and renewal processes Database Administration: Comprehensive management of PostgreSQL and MS SQL Server environments Email Infrastructure: Advanced configuration of inbound/outbound email services using Postfix, Exim, and PowerMTA with DKIM signature implementation DNS Management: Strategic configuration and maintenance of DNS records for optimal routing and availability Messaging Systems: End-to-end RabbitMQ deployment and management Performance Optimization: Kernel-level tuning for application-specific hosts to maximize throughput and minimize latency I excel both as an independent consultant and as part of cross-functional teams, providing creative yet pragmatic solutions to complex infrastructure challenges. Recent projects include mail server implementations, Elasticsearch/Logstash/Kibana (ELK) logging solutions, and custom software integration. I approach each project methodically, prioritizing clear communication and delivering solutions that align precisely with your business requirements.