Juozas Lizdenis

Responsibilities: - Architect and develop high-performance message broker application in GoLang - Design system architecture for scalable messaging platform - Develop backend and frontend components - Manage database design and optimization - Develop multi-language SDKs and client libraries (Go, PHP, Python, and others) - Handle DevOps, deployment, and infrastructure management Achievements: - Architected and built a high-performance message broker in GoLang from the ground up - Successfully designed and implemented a scalable messaging platform - Built and maintained SDKs enabling seamless platform integration across multiple programming languages - Optimized system performance and ensured high availability

Responsibilities: - Design and implement GitOps workflows and CI/CD pipelines using GitHub Actions, Docker, Flux CD, Kubernetes, Terraform, and AWS - Develop and maintain backend APIs and microservices in GoLang and Python - Build and optimize ETL pipelines using Python, Dagster, and Airflow Achievements: - Architected and developed multi-environment CI/CD pipelines enabling seamless deployments across development, staging, and production - Delivered scalable backend services and data pipelines supporting critical business operations

Responsibilities: - Design solutions architecture for scalable multi-cloud infrastructure - Build and maintain CI/CD pipelines using GitLab and Jenkins - Manage Docker container lifecycles and Kubernetes orchestration - Automate IT infrastructure provisioning and configuration with Ansible - Design and develop full-stack web applications (GoLang, PHP, Yii2, Laravel, MongoDB, Redis) Achievements: - Established multi-cloud CI/CD infrastructure across DigitalOcean, Google Cloud, and AWS - Developed auto-scaling database architecture and responsive application interfaces - Built a custom Mail Transfer Agent (MTA) in GoLang for high-volume email processing - Developed custom DNS server in GoLang for optimized domain resolution and traffic management - Delivered production-ready microservices and RESTful APIs in GoLang

Responsibilities: - Design and maintain CI/CD pipelines using Jenkins and Docker - Automate infrastructure configuration with Ansible and SaltStack - Administer Linux/Windows servers across Google Cloud and AWS - Manage virtualization environments (VMWare ESXI, KVM) and monitoring systems (Nagios) - Implement backup, disaster recovery, and VPN solutions - Conduct security audits and compliance reviews Achievements: - Built enterprise-grade CI/CD infrastructure from scratch using Jenkins, Ansible, Docker, SaltStack, and AWS (EC2, VPC, S3) - Designed secure VPN solution enabling seamless product integration within client networks - Established comprehensive backup and disaster recovery procedures ensuring business continuity

Responsibilities: - Design solutions architecture for large-scale automated infrastructure - Build CI/CD pipelines using Jenkins and GitLab - Manage Docker container workflows and Linux server infrastructure - Automate infrastructure provisioning with Ansible - Develop and integrate REST APIs for core product functionality Achievements: - Deployed multi-provider CI/CD infrastructure across OVH Cloud, DigitalOcean, and dedicated servers - Architected large-scale automated infrastructure capable of handling significant traffic loads - Built high-performance REST API using Laravel and MongoDB

Responsibilities: - Design solutions architecture for horizontally scalable product platform - Design CI/CD pipelines using Jenkins and GitLab - Manage Docker containerization and Ansible automation - Develop full-stack applications using Yii2, MongoDB, MySQL, and jQuery Achievements: - Built scalable CI/CD infrastructure across OVH Cloud and dedicated servers - Designed horizontally scalable product architecture for high-traffic workloads - Developed custom REGEXP-based web scraping framework in PHP - Created self-service e-commerce platform (Yii2, Bootstrap, MySQL)

Responsibilities: - Develop and maintain full-stack web applications - Administer and optimize Linux server infrastructure Achievements: - Built newsletter management platform with user portal (PHP, MySQL, MongoDB) - Developed custom Mail Transfer Agent (MTA) for high-volume newsletter delivery (Yii2, MongoDB) - Designed and implemented company-wide CRM system (PHP, MySQL)