Jaxon PoentisProjectsBlog

Jaxon Poentis

j.k.poentis@wustl.edu|linkedin.com/in/jaxon-poentis|github.com/jaximus808|jaxonp.com

Education

Washington University in St. Louis

May 2027

Bachelor of Science in Computer Science + Math

St. Louis, MO
  • Awards: Eagle Scout, Anheuser-Busch Scholar, Dean's List
  • Coursework: Parallel Programming, Cloud Computing, System Software, OOP, Rapid Prototyping

Experience

Capital One

June 2026 – Present

Software Engineering Intern

McLean, VA
  • Built a self-serve FastAPI web app with a team of 5, enabling enterprise teams to search across security groups by CIDR and rule, replacing slow manual lookups across the cloud network environment.
  • Implemented PostgreSQL query optimization using GiST indexes to search 1.5M+ security groups and rules in under a second, delivering near-instant self-serve results at scale.

Tesla

Jan. 2026 – May 2026

Software Engineering Intern

Fremont, CA
  • Created, led, and deployed an AI agent platform (Python, FastAPI, LangGraph, MongoDB, WebSockets) that automates data retrieval and workflow execution across internal microservices via 12+ tool interfaces, adopted by billing, support, and application teams.
  • Engineered asynchronous, event-driven workflows across 10+ distributed .NET microservices to orchestrate energy lease transfers and propagate account data to production, serving Tesla's entire U.S. energy customer base.
  • Led a cross-team effort to ship account-based authentication across the microservice fleet, integrating Cerberus with on-behalf-of identity propagation and account passthrough for secure, scoped tool execution.
  • Profiled and tuned service latency with distributed tracing, APM, and load testing against production SLAs; deployed and managed services across Kubernetes pods with Jenkins CI/CD pipelines.

Spectrum

May 2025 – Aug. 2025

Software Engineering Intern

St. Louis, MO
  • Built a Python coupling analysis tool with custom search algorithms and AST parsing to map nested Java class dependencies, reducing refactoring errors and saving 2–4 days of manual validation per development cycle.
  • Developed backend controller logic and fulfillment workflow integrations to trigger automated email notifications on status changes, enabling faster cross-team collaboration and response times.

Projects

Tandem – Canvas for Humans & Agents

May 2026 – Present

Go, TypeScript, WebSockets, MCP

  • Built and shipped a real-time collaborative canvas (tandemcanvas.com) where humans and AI agents co-edit shared maps, docs, sheets, and roadmaps; engineered a Go WebSocket hub for low-latency multi-client sync and a Node MCP server exposing the canvas as agent-callable tools, backed by Postgres and deployed on GCP via Docker and GitHub Actions.

ANDR – Robotics Agent Framework

Feb. 2026 – Present

C++, Python, ROS 2, LangGraph

  • Built an open-source ROS 2 framework where an LLM controls a robot through strictly decoupled layers; wrote a C++ tool-manager that dynamically discovers and dispatches skill calls to independent action servers, a C++ behavior-tree brain, and a Python ReAct agent, with Gazebo simulation and a FastAPI/WebSocket UI.

Leadership

Google Developer Group – WashU

Aug. 2025 – Present

Core Team Lead

St. Louis, MO
  • Led a team of 8 students through a semester-long project, mentoring on system design and engineering practices while organizing workshops and tech events for the broader WashU CS community.

Technical Skills

  • Languages: Java, Python, C++, C, C#, Go, SQL (Postgres), JavaScript, TypeScript, HTML/CSS
  • Frameworks: Node.js, .NET, React.js, Phaser.js, Express.js, Gin, FastAPI, ROS2, OpenCV, Unity
  • Technologies: Docker, Kubernetes, Jenkins, Supabase, Firebase, Vultr, MongoDB, PostgreSQL, UDP/TCP, Git, Linux, OAuth