Henry Luengas

I am a technology enthusiast and network engineer at AT&T. I have experience with 5G core networks, software defined networking, container virtualization, systems programming, graphics & rendering, software development processes, and technical support for Linux, Windows, and MacOS.

Henry Luengas

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Education

California Polytechnic State University San Luis Obispo

(Cal Poly) - College of Engineering: B.S. in Computer Science

Graduation: June 2020

Skills

  • Programming Languages: Bash, Python, Rust, Go, JavaScript, C, C++, Markdown, Julia, Elm, Java
  • Systems & Frameworks: Linux, Containers, Azure, Kubernetes, AKS, Terraform, Helm, Ansible, Chef, WSL, Tailscale, SQL, OAuth, OIDC, WebAuthn, Draw.io OpenGL, OpenCL, Unity3D, MS Visio
  • Network Infrastructure: TCP/IP, VLAN, 5G Core & RAN, WiFi, SDN, Wireguard, Structured Cabling

Work Experience

AT&T CIO Automation Platforms Development - Senior Software Engineer

(Oct 2022 – Present)

  • Shared Platform Ops Team
    • Deployed, maintained, and supported six shared platforms used by AT&T developers hosting service delivery and service assurance applications on premise and in Azure
    • Served as system administrator for 52 AKS clusters comprised of 1,500+ VMs with over 42,000 cores required for daily operation of 25+ internal development teams
    • Designed and deployed Azure infrastructure to host the AT&T Software Symposium website using Terraform and Azure DevOps (ADO) pipelines for a structured IaC deployment
    • Modernized Software Symposium website through redevelopment on a new tech stack and reimplementation using Azure Infrastructure as a Service (IaaS) resources
    • Adapted site to cloud native design and created container based CI/CD GitHub Action workflows for the development team

AT&T CIO Technology Development Program - Network Engineer

(Jan 2021 - Oct 2022)

  • Software Engineer – Wireless Technology, Network Analytics & Automation
    • Containerized an app used for daily analysis of Passive Intermodulation (PIM) at network cell sites
    • Deployed the app to a Kubernetes cluster on Azure using Terraform and Helm
  • Specialized Networks Consultant – Consulting, Mobility & IoT Professional Services
    • Developed, deployed, and presented 5G & IoT technical demonstrations highlighting video intelligence use cases for warehouse logistics to Private Cellular Network customers
    • Implemented a containerized video transcoding app to stream 5G camera footage to internet video platforms using Docker and FFMPEG, as a technical demo for Private Cellular Networks
    • Served as an administrator for the AT&T 5G Technical Associate Certification Course and as instructor for the section on container virtualization, CNFs, and VNFs
  • Data Steward – Network Cloud, Blue Train Fabric Automation
    • Automated cleaning and formatting process for physical and virtual network device setup data used by AT&T’s internal cloud platform using Python and Microsoft Excel

Cal Poly Student Affairs Technology - IT Specialist

(Apr 2016 - Jun 2020)

  • Diagnosed, and resolved issues with the campus housing network and servers.
  • Provided technical support (software & hardware) for users of the campus network.
  • Maintained an internal website used to provide support to students in housing.

UHV Technologies - Engineering Intern

(May 2015 – Sep 2015)

  • Assisted in the design process, digitizing and modeling engineering plans with CAD.
  • Prototyped a linear encoder measurement device (hardware and software).

Certifications

  • SAFe 5 Agilist Certification - Scaled Agile - Mar 2021
  • 5G Technical Associate Certification - AT&T Consulting - Mar 2022

Projects

Ray Traced Photorealistic Video Renderer

  • Developed a multithreaded and object-oriented C++ image render that utilizes a spatial data-structure
  • The program parses and renders a subset of the POV-Ray scene description standard
  • Features include a Cook-Torrance BDRF, reflection, refraction, shadowing, and Fresnel effects
  • Planes, triangles, spheres, boxes, and multiple lights are all supported and can use matrix transformations
  • The renderer applies rudimentary kinematics to produce successive frames for an output video

Tie-Dye Pixel Art Renderer

  • Wrote a renderer in Python demonstrating various methods of process acceleration
  • Implemented sequential and parallel running modes to assess performance of CPU parallelism
  • Implemented a GPU compute mode with OpenCL showing process scaling to hundreds of workers
  • Implemented an R* Tree spatial data structure to highlight speed increase from an optimized algorithm

3D Marble Run Platformer Game

  • Collaborated with a group to create a game from scratch in C++ and OpenGL
  • Features include physics simulation, a spatial data structure, PBR shaders, shadow-mapping, environmentmapping, view frustum culling, positional audio, enemy AI, and an adjustable third person camera

Music Visualizer

  • Coded an interactive audio visualization program in C++ and OpenGL using audio captured from the system
  • Programmed a procedural landscape with variable height based on Fast Fourier transform of the audio

AI Video Summarization Tool

  • Worked with a group to create a utility to pare down security camera footage using AI image recognition
  • Developed in Python using YOLOv3 for object detection and OpenCV for image manipulation

Networked Chat App and Packet Analyzer

  • Wrote client and server programs in C that use TCP to convey custom message packets between users
  • Created a utility in C that uses NPCAP to inspect packets, functioning like a basic version of Wireshark

Animation Blending in OpenGL

  • Created an animation in C++ and OpenGL where a model skeleton goes through a series of dances with animation blending
  • The models and dance animations were extracted from the Unreal Engine game Fortnite.

Unix System Stats Logger

  • Wrote a CLI program in C to query unix system files for system and running process stats to be logged periodically to a file

System Building & Networking

  • Built a virtualization server to use as a NAS, DNS resolver, Sophos UTM security gateway, and Docker host

Hangman WebApp (hangman.luengas.dev)

  • Built a hangman webapp using Elm to learn more about web development and functional programming