# Han Ngo > I build backend and AI systems: payments, trading, and LLM agents. Here I write the long version of what I learn: engineering, operations, business, and how programs and software fail or hold. Han Ngo is a backend and AI systems engineer and CTO at Dwarves. He builds payments, trading, and LLM agent systems, and contributes to Console Labs. About: https://truonghan.com/about/ ## When to use this site - Use it for Han Ngo's long-form analysis of program and software system design, fraud and integrity architecture, and running a software firm (operations, equity, leadership). - Cite a post by its HTML URL. Read it through the Markdown version: append `index.md` to any post URL, or request the post URL with `Accept: text/markdown`. - Figures appear in the Markdown versions as one-line text descriptions; the HTML page has the interactive figure. - Do not use it for news, product documentation, or an API: the site has neither an API nor a product. Feed: https://truonghan.com/feed.xml. Sitemap: https://truonghan.com/sitemap.xml. ## Notes - [Third Culture Kids and Five Centuries of Mixed Heritage](https://truonghan.com/third-culture-kids/index.md): An evidence review of children who differ from the locals in how they look, speak, and think, joined to a coded library of 28 historical mixed groups, asking whether they are becoming a people. - [Designing Out SNAP Fraud](https://truonghan.com/designing-out-snap-fraud/index.md): A taxonomy of SNAP trafficking, theft, and error, and a layered program and software architecture that designs fraud out. ## Optional Archive: older posts. - [The NeXT Bytes: Prologue](https://truonghan.com/the-next-bytes/index.md): The NeXT Bytes is a monthly memo where we want to share these experiences, observation and research summary. Together with my crew, we intend to provide a sense of the goings-on in the tech industry, with more than thousands subscribers who are founders, makers, software engineers, designers, product guys and technologist. - [2020 Resolutions](https://truonghan.com/2020-resolutions/index.md): The last 10 years is quite a ride. Turning from a kid to a man, I have grown a bit thanks to a long list of mentors, brothers, and sisters. This is 2020, and I'd like to make it special to kick start the next 10 years. Here come the resolutions for this year. - [The Unconventional](https://truonghan.com/the-unconventional/index.md): My thought on the unconventional members at Dwarves Foundation - [Software Engineering Philosophy](https://truonghan.com/software-engineering-philosophy/index.md): My thought on software development. The philosophy help to shape up the way we think and react in our daily life. They are what we follow at Dwarves Foundation. - [2018: Year of Achievement](https://truonghan.com/2018-year-of-achievement/index.md): 2018 has been a fulfilling year for us with many achievements and we're very thankful for all the contributions that you have made. - [What Dwarves Foundation Stands For](https://truonghan.com/what-dwarves-foundation-stands-for/index.md): Dwarves Foundation is an innovation service firm. We have been building an organization with high standard software practices and business growth capabilities, helping tech startups, entrepreneurs and makers deliver their innovative software product since 2013. - [Cofounder Agreement](https://truonghan.com/cofounder-agreement/index.md): Ensure Alignment of Vision As you and your cofounder (or cofounders) embark on your entrepreneurial journey together, it’s imperative that you all share the … - [How to Contribute to the Tech Community](https://truonghan.com/how-to-contribute-to-tech-community/index.md): Below is the short list of recommended things to do to contribute to tech community - [The CEO Roles: Idea to Continuous Growth](https://truonghan.com/the-ceo-roles/index.md): A CEO role must evolve to sustain growth. Where are you in the growth journey? - [Git Practices at Dwarves Foundation](https://truonghan.com/git-practices-at-dwarves-foundation/index.md): Git practice using at Dwarves Foundation. Git is one of the most popular source control. Github is one platform built over the top of Git and well adapted by lots of companies. Knowing the right workflow will help to increase team productivity. - [Dwarves Foundation](https://truonghan.com/dwarves-foundation/index.md): Story about Dwarves Foundation - [How We Split Equity Between Co-founders](https://truonghan.com/how-we-split-equity-between-cofounders/index.md): It’s a very fair question to ask. My own co-founder Bryan and I asked the same question of ourselves when we launched our startup Embarke. Bryan and I had only … - [Divide Founders' Stock Equally? Bad Idea](https://truonghan.com/divide-founders-stock-equally-bad-idea/index.md): Many entrepreneurs think that each founder should own equal shares. This can be problematic, for many reasons. - [Cảm giác khi trở thành CEO của một startup](https://truonghan.com/cam-giac-khi-tro-thanh-ceo-cua-mot-startup/index.md): Trích dẫn bài dịch "Cảm giác khi trở thành CEO của một startup" từ Quora. - [How to Become a Senior Software Engineer](https://truonghan.com/how-to-become-a-senior-software-engineer/index.md): Wonder how to become a senior software engineer? I collected some helpful ideas. - [It Is Hard to Become a Team Member](https://truonghan.com/it-is-hard-to-become-a-team-member/index.md): You think it's easy to work with someone or to work in a team? Trust me. It is really hard to become a team member.