Start a project
Hire Castellar to build and ship.
We partner with founders and businesses on websites, landing pages, web apps, chatbots, and MVPs. Send a short brief—we respond with clarifying questions and a path forward if we’re a fit.
Send a brief
Fill this in instead of wrestling with a mail app. We read every note.
hello@castellar.dev
What to include
A short note beats a perfect brief. These four points are enough to start a useful conversation.
- 01
The problem
What are you launching—a site, a campaign page, an app, a chatbot, or something else?
- 02
Who it’s for
Customers, leads, internal team, both? Rough volume if you know it.
- 03
Timeline & constraints
Hard dates, budget band, must-use tools, brand assets, or compliance needs.
- 04
What “done” looks like
A live landing page, a company site, an MVP, a support assistant, or a replacement for a spreadsheet—be concrete.
Common starting points
- 01Website and landing page developmentMarketing sites, campaign pages, and brochure sites—fast, clear, and built to convert.
- 02Custom web application developmentFull-stack product surfaces—dashboards, customer apps, admin tools—built to hold real traffic.
- 03MVP and product buildsFrom scoped MVP to production hardening: architecture, APIs, implementation, and handoff.
- 04Site and product careUpdates, fixes, performance work, and new pages or features after launch—without drama.
- 05Chatbots and AI assistantsCustomer-facing or internal assistants grounded in your content—with guardrails, streaming UI, and a clear handoff to humans.
Common questions
FAQWho is Castellar for?
Founders, operators, and businesses who need a website, landing page, web app, chatbot, or MVP built and shipped—without a big agency process or hiring a full in-house team.
Do you build marketing websites and landing pages?
Yes. Company sites, campaign landing pages, and brochure sites are a core offer—scoped for clarity, speed, and conversion, then deployed so you can own them.
Do you build chatbots?
Yes. We build assistants grounded in your content with streaming UI and clear handoff to humans. Try the live demo on this site, then email if you want one for your business.
How do projects usually start?
Send a short note with the problem, timeline, and constraints. If it’s a fit, we reply with clarifying questions, a proposed scope, and a path to kickoff—often within a few business days.
Do you work with early-stage startups?
Yes. Many engagements are first sites, landing pages, or MVP builds: tight scope, clear milestones, and a release you can put in front of users. We also support post-launch care when you need steady iteration.
What does engagement look like?
Scoped builds with visible weekly progress, or ongoing care retainers after launch. You review working pages and software. Decisions are written down. The goal is work you can run without us in the room.
Where are you based? Do you work remotely?
Castellar works remotely with clients worldwide. Collaboration is async-friendly with scheduled check-ins when decisions need a live conversation.
What tech stack do you use?
Typically modern web stacks—TypeScript, Next.js, and managed hosting—chosen for speed to ship and long-term maintainability. We’re happy to meet you where your site or product already lives when that is the better path.
Ready when you are.
Send a short brief with the form. If it’s a fit, you’ll hear back with next steps—not a sales deck.
Send inquiry