​Build with Codex & CAR: From Prompting to Agentic Engineering

​​AI coding is entering a new chapter.

​​With the launch of GPT-5.5, OpenAI has pushed frontier models further into complex real-world work: coding, research, tool use, analysis, and multi-step execution. OpenAI describes GPT-5.5 as its smartest model yet, built for complex tasks like coding, research, and data analysis across tools.

​​But the real question is no longer simply: “Can AI write code?”

​​The better question is: “How do we design a workflow where humans think better, agents build better, and teams ship faster?”

​​On 9 May, we are bringing builders, engineers, founders, and AI practitioners together in Ho Chi Minh City for a hands-on build session with OpenAI Codex and Codex Auto Runner (CAR).

​​(https://github.com/Git-on-my-level/codex-autorunner)

​​This is not a sit-and-listen seminar.

​This is a build session.

​​You will see how Codex can move beyond simple code completion into real software engineering work: planning, building features, refactoring, reviewing, and helping developers move from idea to working implementation.

​​OpenAI positions Codex as an AI coding partner designed to accelerate real engineering work across features, refactors, reviews, and releases.

​​The session will be led by David Zhang, creator of Codex Auto Runner (CAR), supported by An Nguyen and Son Le, Codex Ambassadors in Ho Chi Minh City.

​​Because better building starts with better thinking.

​​After that, we move into a focused four-hour hands-on session where participants will explore how Codex and CAR can support a more agentic engineering workflow: from task planning, to execution, to iteration, to shipping.

​​This session is for people who believe the future of software is not “humans versus AI,” but humans leading teams of AI agents with clearer intent, better systems, and stronger engineering judgment.

​

​​Agenda

​​9:00am : Check-in

​​9:20am: Welcome speech by Phong Nguyen, Head of Corporate Innovation at Tasco Group

​​9:30am: Welcome speech (online) by Gabriel, OpenAI Developer Experience

​​9:40am: "How do we reason about what to build before asking agents to build it?" by Dr Michael

​10:00am: Hands-on session starts with the demonstration of CAR by David Zhang - the creator of this project.

10:30am: Flowser.ai - Ky Nam - host of BuildStuffs Saigon to share the topic of "Building reusuable workflows with OpenClaw for business workflows"

​11:00am: Teams to be formed with ideas to be built. Installing CAR on builders' laptops.

​12:00pm: Build starts

​​4:00pm: Demos by builders

​​5:00pm: Networking with drinks

​Throughout the session, F&B will be kindly provided by Tasco Group.

​About Speakers

​Gabriel Chua, OpenAI

​LinkedIn: https://www.linkedin.com/in/gabriel-chua/

​Mr Phong Nguyen, Tasco

​Investment banker -> Startup Founder -> Failed -> Corporate Venture Capitalist

​LinkedIn: https://www.linkedin.com/in/nguyen-dinh-phong/

​Dr Michael, DreamLab

​Serial founder and CEO of 4 tech companies

​• Angel investor and company builder

​• PhD in Artificial Intelligence

​• Raised over 50 million USD

​• Former Bain manager

​LinkedIn: https://www.linkedin.com/in/liebmannmichael/