Castellar
Builds that hold
Sites and software that ship.
Castellar designs and builds websites, landing pages, and web apps for teams that need clear delivery—not slide decks.
Services
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Websites & landing pages
Marketing sites, campaign pages, and brochure sites—fast, clear, and built to convert.
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Web applications
Full-stack product surfaces—dashboards, customer apps, admin tools—built to hold real traffic.
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Product builds
From scoped MVP to production hardening: architecture, APIs, implementation, and handoff.
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Care & iteration
Updates, fixes, performance work, and new pages or features after launch—without drama.
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Who we help
FitFounders & startups
First site, campaign page, or MVP—scoped so you can launch without hiring a full team.
Growing businesses
Replace an outdated site or spreadsheet workflow with something clear, fast, and yours to own.
Product teams
A focused build partner for web apps and iteration—visible progress, no agency theater.
How we work
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Scope first
We agree on outcomes, constraints, and a shipping path before a line of code lands.
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Build in the open
Short cycles, visible progress, decisions written down. You always know what’s next.
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Leave it operable
Deployable work, clear ownership, and docs a future you (or engineer) can actually use.
Common questions
FAQWho is Castellar for?
Founders, operators, and businesses who need a website, landing page, web app, 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.
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.
Tell us what you’re building.
Hire Castellar for a website, landing page, web app, or MVP. Share the problem, timeline, and constraints—we’ll reply with next steps.