Jesse Leonard

Languages

Frameworks

Cloud & DevOps

Networking & Infrastructure

Containerization

Contracted to support the U.S. Army with a security clearance

• Significantly improved software delivery by architecting and implementing a fully automated GitLab CI/CD pipeline deploying Next.js applications on AWS EKS, replacing manual deployment processes.
• Developed full-stack applications with React (Next.js) and Express backends to enhance operational workflows within a cloud-native environment.
• Designed R Shiny dashboards providing critical data insights to leadership, leveraging cloud-based data sources.
• Proactively identified and resolved cloud development and Kubernetes deployment challenges, enhancing team efficiency and the stability of mission-critical systems.

• Led monthly product releases, automating deployments to Kubernetes clusters using Jenkins, ensuring smooth transitions across development, staging, and production environments.
• Built a scalable CLI tool leveraging Python to automate customer onboarding processes, including Kubernetes resource provisioning, resulting in a 40% reduction in setup time.
• Designed and implemented Kubernetes Ingress rules and horizontal pod autoscaling policies within AWS EKS, significantly improving application resilience and scalability.
• Developed a Cognito-integrated user management API (Django REST) for secure authentication within containerized applications.
• Containerized Django applications using Docker and orchestrated their deployment on AWS ECS, streamlining development and deployment workflows.

• Automated the deployment and management of HPC systems leveraging Juju and Kubernetes, overseeing a large-scale infrastructure of over 200 servers.
• Established end-to-end CI/CD pipelines for infrastructure provisioning, automated testing, and seamless software releases within Kubernetes environments.
• Configured MaaS (Metal-as-a-Service) environments, including network configurations, firewall rules, and automated node discovery for Kubernetes cluster deployments.
• Implemented comprehensive monitoring solutions using Prometheus and the ELK Stack to ensure 100% uptime and proactive alerting for critical Kubernetes-managed systems.

Self-Hosted K3's Cluster

• Designed and implemented a homelab network using pfSense for DHCP management and static IP assignment to all nodes.
• Deployed a compute cluster consisting of 3 Raspberry Pi devices running Ubuntu and an Intel NUC hosting a dedicated PostgreSQL database instance.
• Automated provisioning and configuration across all nodes using Ansible, ensuring consistency and scalability.
• Configured Traefik as a reverse proxy and dynamic load balancer to manage internal routing and service discovery within the cluster.
• Gained hands-on experience with systems administration, infrastructure as code, container networking, and service orchestration in a production-like environment.

CozyBible.com

• Developed a semantic search engine for Bible verses using Next.js, Django, and Elasticsearch, with a focus on efficient data indexing and retrieval.
• Utilized text embeddings to enable natural language queries, demonstrating experience with data processing and search technologies.

YouTube Channel

• Created programming tutorials covering topics such as Python, REST APIs, and Kubernetes, showcasing communication and technical explanation skills.
• Top video: "Principles of RESTful API Architecture" (educational content for developers).