Nicolas Teixeira — Portfolio

Nicolas Teixeira — Systems & DevOps EngineerSystems & DevOps Engineer with 5+ years designing enterprise-grade, cloud-native infrastructure and GPU-accelerated environments for aviation and financial services. Orchestrates multi-million dollar infrastructure programs ($30M+) supporting global airlines (Delta, United) and airports. Highly skilled in Kubernetes orchestration, hybrid cloud migrations, high-efficiency AI/ML inference serving, zero-trust security, and infrastructure-as-code automation. Built for remote autonomy and cross-functional leadership.Core Competencies Cloud & Platform: AWS (EKS, VPC, Route 53, Transit Gateway, Direct Connect), Azure (VM, VNet, NSG, Entra ID), Google Cloud (GCP), VMware, Terraform, Ansible, FinOps
Containers, OS & Virt: Kubernetes (EKS, AKS, Helm, kubectl, k9s, Lens IDE, Traefik, NGINX Ingress, MetalLB), Podman, Docker, Proxmox VE, LXC, Linux (RHEL, Ubuntu), Systemd, ZFS, PCIe GPU Passthrough
CI/CD & Tools: Git, GitHub Actions, GitLab CI, Jenkins, Azure DevOps, ArgoCD, Trivy, Open Policy Agent (OPA)
AI/ML Platform: GPU Virtualization (NVIDIA CUDA/vGPU, LXC GPU Sharing), LLM Inference (vLLM, sglang, LM Studio, LiteLLM, llama.cpp, MLX), Google Gemini API, Custom LLM Agent Workflows
Observability: Prometheus, Grafana, Loki, Zabbix, AWS CloudWatch
Security & Net: Keycloak, SAML/LDAP/AD, IAM (RBAC, Least Privilege), SSSD / Kerberos, TLS, Cloudflare Zero-Trust (Tunnels, mTLS), Secrets Management (AWS/Azure/GitHub Secrets, HashiCorp Vault), UniFi, Technitium DNS, Apache Guacamole, Nginx Proxy Manager, network segmentation
Languages, DBs & APIs: Python, Java, JavaScript, React, HTML/CSS, PowerShell, Bash, SQL, MySQL, PostgreSQL, Redis, Amazon Aurora, MQTT, API Design & Integration Professional Experience

ADB Safegate — System Engineer (2023 - Present): Managed technical execution of a $30M+ United Airlines infrastructure program. Led AWS migrations using Terraform, Direct Connect, and Transit Gateway. Package K8s environments, identity layers, and 5G edge systems.

LPL Financial — Product Support Specialist (2021 - 2023): Supported high-availability financial trading platforms under strict SLAs.

IT Technical Support Roles (2018 - 2021): Systems maintenance, surveillance networks, and remote support across Express Hospitality and The Wood Group SD.

Projects & Source CodeReview system architectures, Proxmox VE & LXC deployments (ZFS storage pools, PCIe GPU passthrough), Terraform modules, and machine learning platform configurations (vLLM, LiteLLM, Redis, and Open Policy Agent) at: github.com/nicolasnkGH