Big or small, we’ll work with your budget.
It can be intimidating to see a polished website and assume it is outside your budget — but that’s why SIR_ is here. We work with businesses at every stage and offer options for a range of budgets, from simple, focused websites to fully custom builds.
Tell us what you need and what you’re comfortable spending, and we’ll help you find the right place to start.
SIR Websites is a one-person studio in Los Angeles. We design and build custom websites for businesses at every stage and budget — and we put your business online.
Designer, developer, and the person who answers your emails. Sebastian started SIR to give small businesses the kind of website usually reserved for companies with agencies and seven-figure budgets. Every project is designed, built, and shipped by the same pair of hands.
Designed with intention. Engineered with care. Supported by someone who understands what’s at stake.
I earned my bachelor’s degree in Computer Science with a minor in Statistics and Data Science. My background in software engineering and web development allows me to think beyond appearance and build websites as complete, functional systems.
I understand the technology behind the design—from structure and performance to integrations, data, responsive behavior, and long-term maintainability.
AI can generate a website in minutes, but generating code is not the same as understanding it. Many websites are created through one-click tools, lightly edited, and published without anyone carefully reviewing what is happening underneath.
Unreviewed AI-generated websites can contain unnecessary dependencies, broken forms, poor performance, accessibility issues, exposed credentials, and security vulnerabilities. When the person delivering the website does not understand the code, your business becomes the testing environment.
I use AI as a tool when it is helpful—but I do not rely on it to replace engineering judgment. I review, test, maintain, and take responsibility for the technology behind every website I deliver.
I built and operate my own local business, so I understand that a website needs to do more than look good. It should save time, answer customer questions, build trust, and help the business grow.
I approach every project from both perspectives: the engineer responsible for how the website works and the business owner who understands why it matters.
You work directly with the person designing, building, and supporting your site.